Merge branch 'master' into upstream-fixes

469 files changed, 4413 insertions, 3931 deletions

diff --git a/arch/alpha/kernel/core_apecs.c b/arch/alpha/kernel/core_apecs.c
index a27ba12ba35e..ca46b2c24457 100644
--- a/arch/alpha/kernel/core_apecs.c
+++ b/arch/alpha/kernel/core_apecs.c
@@ -387,8 +387,7 @@ apecs_pci_clr_err(void)
 }
 
 void
-apecs_machine_check(unsigned long vector, unsigned long la_ptr,
-                    struct pt_regs * regs)
+apecs_machine_check(unsigned long vector, unsigned long la_ptr)
 {
         struct el_common *mchk_header;
         struct el_apecs_procdata *mchk_procdata;
@@ -412,7 +411,7 @@ apecs_machine_check(unsigned long vector, unsigned long la_ptr,
         wrmces(0x7);            /* reset machine check pending flag */
         mb();
 
-        process_mcheck_info(vector, la_ptr, regs, "APECS",
+        process_mcheck_info(vector, la_ptr, "APECS",
                             (mcheck_expected(0)
                              && (mchk_sysdata->epic_dcsr & 0x0c00UL)));
 }
diff --git a/arch/alpha/kernel/core_cia.c b/arch/alpha/kernel/core_cia.c
index fd563064363c..1d6ee6c985f9 100644
--- a/arch/alpha/kernel/core_cia.c
+++ b/arch/alpha/kernel/core_cia.c
@@ -1192,8 +1192,7 @@ cia_decode_mchk(unsigned long la_ptr)
 }
 
 void
-cia_machine_check(unsigned long vector, unsigned long la_ptr,
-                  struct pt_regs * regs)
+cia_machine_check(unsigned long vector, unsigned long la_ptr)
 {
         int expected;
 
@@ -1208,5 +1207,5 @@ cia_machine_check(unsigned long vector, unsigned long la_ptr,
         expected = mcheck_expected(0);
         if (!expected && vector == 0x660)
                 expected = cia_decode_mchk(la_ptr);
-        process_mcheck_info(vector, la_ptr, regs, "CIA", expected);
+        process_mcheck_info(vector, la_ptr, "CIA", expected);
 }
diff --git a/arch/alpha/kernel/core_lca.c b/arch/alpha/kernel/core_lca.c
index 6a5a9145c676..4843f6ec9f3a 100644
--- a/arch/alpha/kernel/core_lca.c
+++ b/arch/alpha/kernel/core_lca.c
@@ -19,6 +19,7 @@
 #include <linux/tty.h>
 
 #include <asm/ptrace.h>
+#include <asm/irq_regs.h>
 #include <asm/smp.h>
 
 #include "proto.h"
@@ -386,8 +387,7 @@ ioc_error(__u32 stat0, __u32 stat1)
 }
 
 void
-lca_machine_check(unsigned long vector, unsigned long la_ptr,
-                  struct pt_regs *regs)
+lca_machine_check(unsigned long vector, unsigned long la_ptr)
 {
         const char * reason;
         union el_lca el;
@@ -397,7 +397,7 @@ lca_machine_check(unsigned long vector, unsigned long la_ptr,
         wrmces(rdmces());       /* reset machine check pending flag */
 
         printk(KERN_CRIT "LCA machine check: vector=%#lx pc=%#lx code=%#x\n",
-               vector, regs->pc, (unsigned int) el.c->code);
+               vector, get_irq_regs()->pc, (unsigned int) el.c->code);
 
         /*
          * The first quadword after the common header always seems to
diff --git a/arch/alpha/kernel/core_mcpcia.c b/arch/alpha/kernel/core_mcpcia.c
index 28849c894153..8d019071190a 100644
--- a/arch/alpha/kernel/core_mcpcia.c
+++ b/arch/alpha/kernel/core_mcpcia.c
@@ -572,8 +572,7 @@ mcpcia_print_system_area(unsigned long la_ptr)
 }
 
 void
-mcpcia_machine_check(unsigned long vector, unsigned long la_ptr,
-                     struct pt_regs * regs)
+mcpcia_machine_check(unsigned long vector, unsigned long la_ptr)
 {
         struct el_common *mchk_header;
         struct el_MCPCIA_uncorrected_frame_mcheck *mchk_logout;
@@ -610,7 +609,7 @@ mcpcia_machine_check(unsigned long vector, unsigned long la_ptr,
         wrmces(0x7);
         mb();
 
-        process_mcheck_info(vector, la_ptr, regs, "MCPCIA", expected != 0);
+        process_mcheck_info(vector, la_ptr, "MCPCIA", expected != 0);
         if (!expected && vector != 0x620 && vector != 0x630) {
                 mcpcia_print_uncorrectable(mchk_logout);
                 mcpcia_print_system_area(la_ptr);
diff --git a/arch/alpha/kernel/core_polaris.c b/arch/alpha/kernel/core_polaris.c
index 277674a500ff..c5a271d37abd 100644
--- a/arch/alpha/kernel/core_polaris.c
+++ b/arch/alpha/kernel/core_polaris.c
@@ -187,8 +187,7 @@ polaris_pci_clr_err(void)
 }
 
 void
-polaris_machine_check(unsigned long vector, unsigned long la_ptr,
-                      struct pt_regs * regs)
+polaris_machine_check(unsigned long vector, unsigned long la_ptr)
 {
         /* Clear the error before any reporting.  */
         mb();
@@ -198,6 +197,6 @@ polaris_machine_check(unsigned long vector, unsigned long la_ptr,
         wrmces(0x7);
         mb();
 
-        process_mcheck_info(vector, la_ptr, regs, "POLARIS",
+        process_mcheck_info(vector, la_ptr, "POLARIS",
                             mcheck_expected(0));
 }
diff --git a/arch/alpha/kernel/core_t2.c b/arch/alpha/kernel/core_t2.c
index ecce09e3626a..f5ca5255eb06 100644
--- a/arch/alpha/kernel/core_t2.c
+++ b/arch/alpha/kernel/core_t2.c
@@ -551,8 +551,7 @@ t2_clear_errors(int cpu)
  * Hence all the taken/expected/any_expected/last_taken stuff...
  */
 void
-t2_machine_check(unsigned long vector, unsigned long la_ptr,
-                 struct pt_regs * regs)
+t2_machine_check(unsigned long vector, unsigned long la_ptr)
 {
         int cpu = smp_processor_id();
 #ifdef CONFIG_VERBOSE_MCHECK
@@ -618,5 +617,5 @@ t2_machine_check(unsigned long vector, unsigned long la_ptr,
         }
 #endif
 
-        process_mcheck_info(vector, la_ptr, regs, "T2", mcheck_expected(cpu));
+        process_mcheck_info(vector, la_ptr, "T2", mcheck_expected(cpu));
 }
diff --git a/arch/alpha/kernel/core_tsunami.c b/arch/alpha/kernel/core_tsunami.c
index 8aa305bd6a2c..ce623c6e55e1 100644
--- a/arch/alpha/kernel/core_tsunami.c
+++ b/arch/alpha/kernel/core_tsunami.c
@@ -443,8 +443,7 @@ tsunami_pci_clr_err(void)
 }
 
 void
-tsunami_machine_check(unsigned long vector, unsigned long la_ptr,
-                      struct pt_regs * regs)
+tsunami_machine_check(unsigned long vector, unsigned long la_ptr)
 {
         /* Clear error before any reporting.  */
         mb();
@@ -454,6 +453,6 @@ tsunami_machine_check(unsigned long vector, unsigned long la_ptr,
         wrmces(0x7);
         mb();
 
-        process_mcheck_info(vector, la_ptr, regs, "TSUNAMI",
+        process_mcheck_info(vector, la_ptr, "TSUNAMI",
                             mcheck_expected(smp_processor_id()));
 }
diff --git a/arch/alpha/kernel/core_wildfire.c b/arch/alpha/kernel/core_wildfire.c
index 2b767a1bad96..7e072443d7fd 100644
--- a/arch/alpha/kernel/core_wildfire.c
+++ b/arch/alpha/kernel/core_wildfire.c
@@ -322,8 +322,7 @@ wildfire_init_arch(void)
 }
 
 void
-wildfire_machine_check(unsigned long vector, unsigned long la_ptr,
-                       struct pt_regs * regs)
+wildfire_machine_check(unsigned long vector, unsigned long la_ptr)
 {
         mb();
         mb();  /* magic */
@@ -332,7 +331,7 @@ wildfire_machine_check(unsigned long vector, unsigned long la_ptr,
         wrmces(0x7);
         mb();
 
-        process_mcheck_info(vector, la_ptr, regs, "WILDFIRE",
+        process_mcheck_info(vector, la_ptr, "WILDFIRE",
                             mcheck_expected(smp_processor_id()));
 }
 
diff --git a/arch/alpha/kernel/err_ev6.c b/arch/alpha/kernel/err_ev6.c
index 64f59f2fcf5c..69b5f4ea7355 100644
--- a/arch/alpha/kernel/err_ev6.c
+++ b/arch/alpha/kernel/err_ev6.c
@@ -11,6 +11,7 @@
 #include <linux/sched.h>
 
 #include <asm/io.h>
+#include <asm/irq_regs.h>
 #include <asm/hwrpb.h>
 #include <asm/smp.h>
 #include <asm/err_common.h>
@@ -229,7 +230,7 @@ ev6_process_logout_frame(struct el_common *mchk_header, int print)
 }
 
 void
-ev6_machine_check(u64 vector, u64 la_ptr, struct pt_regs *regs)
+ev6_machine_check(u64 vector, u64 la_ptr)
 {
         struct el_common *mchk_header = (struct el_common *)la_ptr;
 
@@ -260,7 +261,7 @@ ev6_machine_check(u64 vector, u64 la_ptr, struct pt_regs *regs)
                        (unsigned int)vector, (int)smp_processor_id());
                 
                 ev6_process_logout_frame(mchk_header, 1);
-                dik_show_regs(regs, NULL);
+                dik_show_regs(get_irq_regs(), NULL);
 
                 err_print_prefix = saved_err_prefix;
         }
diff --git a/arch/alpha/kernel/err_ev7.c b/arch/alpha/kernel/err_ev7.c
index fed6b3d1b803..95463ab1cf35 100644
--- a/arch/alpha/kernel/err_ev7.c
+++ b/arch/alpha/kernel/err_ev7.c
@@ -118,7 +118,7 @@ ev7_collect_logout_frame_subpackets(struct el_subpacket *el_ptr,
 }
 
 void
-ev7_machine_check(u64 vector, u64 la_ptr, struct pt_regs *regs)
+ev7_machine_check(u64 vector, u64 la_ptr)
 {
         struct el_subpacket *el_ptr = (struct el_subpacket *)la_ptr;
         char *saved_err_prefix = err_print_prefix;
diff --git a/arch/alpha/kernel/err_impl.h b/arch/alpha/kernel/err_impl.h
index 64e9b73809fa..3c12258158e6 100644
--- a/arch/alpha/kernel/err_impl.h
+++ b/arch/alpha/kernel/err_impl.h
@@ -60,26 +60,26 @@ extern struct ev7_lf_subpackets *
 ev7_collect_logout_frame_subpackets(struct el_subpacket *,
                                     struct ev7_lf_subpackets *);
 extern void ev7_register_error_handlers(void);
-extern void ev7_machine_check(u64, u64, struct pt_regs *);
+extern void ev7_machine_check(u64, u64);
 
 /*
  * err_ev6.c
  */
 extern void ev6_register_error_handlers(void);
 extern int ev6_process_logout_frame(struct el_common *, int);
-extern void ev6_machine_check(u64, u64, struct pt_regs *);
+extern void ev6_machine_check(u64, u64);
 
 /*
  * err_marvel.c
  */
-extern void marvel_machine_check(u64, u64, struct pt_regs *);
+extern void marvel_machine_check(u64, u64);
 extern void marvel_register_error_handlers(void);
 
 /*
  * err_titan.c
  */
 extern int titan_process_logout_frame(struct el_common *, int);
-extern void titan_machine_check(u64, u64, struct pt_regs *);
+extern void titan_machine_check(u64, u64);
 extern void titan_register_error_handlers(void);
 extern int privateer_process_logout_frame(struct el_common *, int);
-extern void privateer_machine_check(u64, u64, struct pt_regs *);
+extern void privateer_machine_check(u64, u64);
diff --git a/arch/alpha/kernel/err_marvel.c b/arch/alpha/kernel/err_marvel.c
index 70b38b1d2af3..f2956ac8dccc 100644
--- a/arch/alpha/kernel/err_marvel.c
+++ b/arch/alpha/kernel/err_marvel.c
@@ -1042,7 +1042,7 @@ marvel_process_logout_frame(struct ev7_lf_subpackets *lf_subpackets, int print)
 }
 
 void
-marvel_machine_check(u64 vector, u64 la_ptr, struct pt_regs *regs)
+marvel_machine_check(u64 vector, u64 la_ptr)
 {
         struct el_subpacket *el_ptr = (struct el_subpacket *)la_ptr;
         int (*process_frame)(struct ev7_lf_subpackets *, int) = NULL;
@@ -1077,7 +1077,7 @@ marvel_machine_check(u64 vector, u64 la_ptr, struct pt_regs *regs)
 
         default:
                 /* Don't know it - pass it up.  */
-                ev7_machine_check(vector, la_ptr, regs);
+                ev7_machine_check(vector, la_ptr);
                 return;
         }       
 
diff --git a/arch/alpha/kernel/err_titan.c b/arch/alpha/kernel/err_titan.c
index 7e6720d45f02..febe71c6869f 100644
--- a/arch/alpha/kernel/err_titan.c
+++ b/arch/alpha/kernel/err_titan.c
@@ -379,7 +379,7 @@ titan_process_logout_frame(struct el_common *mchk_header, int print)
 }
 
 void
-titan_machine_check(u64 vector, u64 la_ptr, struct pt_regs *regs)
+titan_machine_check(u64 vector, u64 la_ptr)
 {
         struct el_common *mchk_header = (struct el_common *)la_ptr;
         struct el_TITAN_sysdata_mcheck *tmchk =
@@ -408,7 +408,7 @@ titan_machine_check(u64 vector, u64 la_ptr, struct pt_regs *regs)
          * Only handle system errors here 
          */
         if ((vector != SCB_Q_SYSMCHK) && (vector != SCB_Q_SYSERR)) {
-                ev6_machine_check(vector, la_ptr, regs);
+                ev6_machine_check(vector, la_ptr);
                 return;
         }
 
@@ -442,7 +442,7 @@ titan_machine_check(u64 vector, u64 la_ptr, struct pt_regs *regs)
 #ifdef CONFIG_VERBOSE_MCHECK
                 titan_process_logout_frame(mchk_header, alpha_verbose_mcheck);
                 if (alpha_verbose_mcheck)
-                        dik_show_regs(regs, NULL);
+                        dik_show_regs(get_irq_regs(), NULL);
 #endif /* CONFIG_VERBOSE_MCHECK */
 
                 err_print_prefix = saved_err_prefix;
@@ -452,7 +452,7 @@ titan_machine_check(u64 vector, u64 la_ptr, struct pt_regs *regs)
                  * machine checks to interrupts
                  */
                 irqmask = tmchk->c_dirx & TITAN_MCHECK_INTERRUPT_MASK;
-                titan_dispatch_irqs(irqmask, regs);
+                titan_dispatch_irqs(irqmask);
         }       
 
 
@@ -701,7 +701,7 @@ privateer_process_logout_frame(struct el_common *mchk_header, int print)
 }
 
 void
-privateer_machine_check(u64 vector, u64 la_ptr, struct pt_regs *regs)
+privateer_machine_check(u64 vector, u64 la_ptr)
 {
         struct el_common *mchk_header = (struct el_common *)la_ptr;
         struct el_TITAN_sysdata_mcheck *tmchk =
@@ -723,7 +723,7 @@ privateer_machine_check(u64 vector, u64 la_ptr, struct pt_regs *regs)
          * Only handle system events here.
          */
         if (vector != SCB_Q_SYSEVENT) 
-                return titan_machine_check(vector, la_ptr, regs);
+                return titan_machine_check(vector, la_ptr);
 
         /*
          * Report the event - System Events should be reported even if no
@@ -746,7 +746,7 @@ privateer_machine_check(u64 vector, u64 la_ptr, struct pt_regs *regs)
         /*
          * Dispatch the interrupt(s).
          */
-        titan_dispatch_irqs(irqmask, regs);
+        titan_dispatch_irqs(irqmask);
 
         /* 
          * Release the logout frame.
diff --git a/arch/alpha/kernel/irq.c b/arch/alpha/kernel/irq.c
index 729c475d2269..facf82a5499a 100644
--- a/arch/alpha/kernel/irq.c
+++ b/arch/alpha/kernel/irq.c
@@ -127,7 +127,7 @@ unlock:
 #define MAX_ILLEGAL_IRQS 16
 
 void
-handle_irq(int irq, struct pt_regs * regs)
+handle_irq(int irq)
 {       
         /* 
          * We ack quickly, we don't want the irq controller
@@ -157,6 +157,6 @@ handle_irq(int irq, struct pt_regs * regs)
          * at IPL 0.
          */
         local_irq_disable();
-        __do_IRQ(irq, regs);
+        __do_IRQ(irq);
         irq_exit();
 }
diff --git a/arch/alpha/kernel/irq_alpha.c b/arch/alpha/kernel/irq_alpha.c
index ddf5cf8dcb0b..6dd126b8be85 100644
--- a/arch/alpha/kernel/irq_alpha.c
+++ b/arch/alpha/kernel/irq_alpha.c
@@ -39,6 +39,7 @@ asmlinkage void
 do_entInt(unsigned long type, unsigned long vector,
           unsigned long la_ptr, struct pt_regs *regs)
 {
+        struct pt_regs *old_regs;
         switch (type) {
         case 0:
 #ifdef CONFIG_SMP
@@ -51,6 +52,7 @@ do_entInt(unsigned long type, unsigned long vector,
 #endif
                 break;
         case 1:
+                old_regs = set_irq_regs(regs);
 #ifdef CONFIG_SMP
           {
                 long cpu;
@@ -61,18 +63,23 @@ do_entInt(unsigned long type, unsigned long vector,
                 if (cpu != boot_cpuid) {
                         kstat_cpu(cpu).irqs[RTC_IRQ]++;
                 } else {
-                        handle_irq(RTC_IRQ, regs);
+                        handle_irq(RTC_IRQ);
                 }
           }
 #else
-                handle_irq(RTC_IRQ, regs);
+                handle_irq(RTC_IRQ);
 #endif
+                set_irq_regs(old_regs);
                 return;
         case 2:
-                alpha_mv.machine_check(vector, la_ptr, regs);
+                old_regs = set_irq_regs(regs);
+                alpha_mv.machine_check(vector, la_ptr);
+                set_irq_regs(old_regs);
                 return;
         case 3:
-                alpha_mv.device_interrupt(vector, regs);
+                old_regs = set_irq_regs(regs);
+                alpha_mv.device_interrupt(vector);
+                set_irq_regs(old_regs);
                 return;
         case 4:
                 perf_irq(la_ptr, regs);
@@ -120,8 +127,7 @@ struct mcheck_info __mcheck_info;
 
 void
 process_mcheck_info(unsigned long vector, unsigned long la_ptr,
-                    struct pt_regs *regs, const char *machine,
-                    int expected)
+                    const char *machine, int expected)
 {
         struct el_common *mchk_header;
         const char *reason;
@@ -148,7 +154,7 @@ process_mcheck_info(unsigned long vector, unsigned long la_ptr,
         mchk_header = (struct el_common *)la_ptr;
 
         printk(KERN_CRIT "%s machine check: vector=0x%lx pc=0x%lx code=0x%x\n",
-               machine, vector, regs->pc, mchk_header->code);
+               machine, vector, get_irq_regs()->pc, mchk_header->code);
 
         switch (mchk_header->code) {
         /* Machine check reasons.  Defined according to PALcode sources.  */
@@ -189,7 +195,7 @@ process_mcheck_info(unsigned long vector, unsigned long la_ptr,
         printk(KERN_CRIT "machine check type: %s%s\n",
                reason, mchk_header->retry ? " (retryable)" : "");
 
-        dik_show_regs(regs, NULL);
+        dik_show_regs(get_irq_regs(), NULL);
 
 #ifdef CONFIG_VERBOSE_MCHECK
         if (alpha_verbose_mcheck > 1) {
diff --git a/arch/alpha/kernel/irq_i8259.c b/arch/alpha/kernel/irq_i8259.c
index ebbadbc0c36a..9405bee9894e 100644
--- a/arch/alpha/kernel/irq_i8259.c
+++ b/arch/alpha/kernel/irq_i8259.c
@@ -137,7 +137,7 @@ init_i8259a_irqs(void)
 
 #if defined(IACK_SC)
 void
-isa_device_interrupt(unsigned long vector, struct pt_regs *regs)
+isa_device_interrupt(unsigned long vector)
 {
         /*
          * Generate a PCI interrupt acknowledge cycle.  The PIC will
@@ -147,13 +147,13 @@ isa_device_interrupt(unsigned long vector, struct pt_regs *regs)
          */
         int j = *(vuip) IACK_SC;
         j &= 0xff;
-        handle_irq(j, regs);
+        handle_irq(j);
 }
 #endif
 
 #if defined(CONFIG_ALPHA_GENERIC) || !defined(IACK_SC)
 void
-isa_no_iack_sc_device_interrupt(unsigned long vector, struct pt_regs *regs)
+isa_no_iack_sc_device_interrupt(unsigned long vector)
 {
         unsigned long pic;
 
@@ -176,7 +176,7 @@ isa_no_iack_sc_device_interrupt(unsigned long vector, struct pt_regs *regs)
         while (pic) {
                 int j = ffz(~pic);
                 pic &= pic - 1;
-                handle_irq(j, regs);
+                handle_irq(j);
         }
 }
 #endif
diff --git a/arch/alpha/kernel/irq_impl.h b/arch/alpha/kernel/irq_impl.h
index f201d8ffc0d9..cc9a8a7aa279 100644
--- a/arch/alpha/kernel/irq_impl.h
+++ b/arch/alpha/kernel/irq_impl.h
@@ -15,10 +15,10 @@
 
 #define RTC_IRQ    8
 
-extern void isa_device_interrupt(unsigned long, struct pt_regs *);
-extern void isa_no_iack_sc_device_interrupt(unsigned long, struct pt_regs *);
-extern void srm_device_interrupt(unsigned long, struct pt_regs *);
-extern void pyxis_device_interrupt(unsigned long, struct pt_regs *);
+extern void isa_device_interrupt(unsigned long);
+extern void isa_no_iack_sc_device_interrupt(unsigned long);
+extern void srm_device_interrupt(unsigned long);
+extern void pyxis_device_interrupt(unsigned long);
 
 extern struct irqaction timer_irqaction;
 extern struct irqaction isa_cascade_irqaction;
@@ -39,4 +39,4 @@ extern void i8259a_end_irq(unsigned int);
 extern struct hw_interrupt_type i8259a_irq_type;
 extern void init_i8259a_irqs(void);
 
-extern void handle_irq(int irq, struct pt_regs * regs);
+extern void handle_irq(int irq);
diff --git a/arch/alpha/kernel/irq_pyxis.c b/arch/alpha/kernel/irq_pyxis.c
index 3b581415bab0..d53edbccbfe5 100644
--- a/arch/alpha/kernel/irq_pyxis.c
+++ b/arch/alpha/kernel/irq_pyxis.c
@@ -81,7 +81,7 @@ static struct hw_interrupt_type pyxis_irq_type = {
 };
 
 void 
-pyxis_device_interrupt(unsigned long vector, struct pt_regs *regs)
+pyxis_device_interrupt(unsigned long vector)
 {
         unsigned long pld;
         unsigned int i;
@@ -98,9 +98,9 @@ pyxis_device_interrupt(unsigned long vector, struct pt_regs *regs)
                 i = ffz(~pld);
                 pld &= pld - 1; /* clear least bit set */
                 if (i == 7)
-                        isa_device_interrupt(vector, regs);
+                        isa_device_interrupt(vector);
                 else
-                        handle_irq(16+i, regs);
+                        handle_irq(16+i);
         }
 }
 
diff --git a/arch/alpha/kernel/irq_srm.c b/arch/alpha/kernel/irq_srm.c
index 8e4d121f84cc..32212014fbe9 100644
--- a/arch/alpha/kernel/irq_srm.c
+++ b/arch/alpha/kernel/irq_srm.c
@@ -72,8 +72,8 @@ init_srm_irqs(long max, unsigned long ignore_mask)
 }
 
 void 
-srm_device_interrupt(unsigned long vector, struct pt_regs * regs)
+srm_device_interrupt(unsigned long vector)
 {
         int irq = (vector - 0x800) >> 4;
-        handle_irq(irq, regs);
+        handle_irq(irq);
 }
diff --git a/arch/alpha/kernel/proto.h b/arch/alpha/kernel/proto.h
index 21f71287b6f5..95912ecc65e1 100644
--- a/arch/alpha/kernel/proto.h
+++ b/arch/alpha/kernel/proto.h
@@ -20,7 +20,7 @@ struct pci_controller;
 extern struct pci_ops apecs_pci_ops;
 extern void apecs_init_arch(void);
 extern void apecs_pci_clr_err(void);
-extern void apecs_machine_check(u64, u64, struct pt_regs *);
+extern void apecs_machine_check(u64, u64);
 extern void apecs_pci_tbi(struct pci_controller *, dma_addr_t, dma_addr_t);
 
 /* core_cia.c */
@@ -29,27 +29,27 @@ extern void cia_init_pci(void);
 extern void cia_init_arch(void);
 extern void pyxis_init_arch(void);
 extern void cia_kill_arch(int);
-extern void cia_machine_check(u64, u64, struct pt_regs *);
+extern void cia_machine_check(u64, u64);
 extern void cia_pci_tbi(struct pci_controller *, dma_addr_t, dma_addr_t);
 
 /* core_irongate.c */
 extern struct pci_ops irongate_pci_ops;
 extern int irongate_pci_clr_err(void);
 extern void irongate_init_arch(void);
-extern void irongate_machine_check(u64, u64, struct pt_regs *);
+extern void irongate_machine_check(u64, u64);
 #define irongate_pci_tbi ((void *)0)
 
 /* core_lca.c */
 extern struct pci_ops lca_pci_ops;
 extern void lca_init_arch(void);
-extern void lca_machine_check(u64, u64, struct pt_regs *);
+extern void lca_machine_check(u64, u64);
 extern void lca_pci_tbi(struct pci_controller *, dma_addr_t, dma_addr_t);
 
 /* core_marvel.c */
 extern struct pci_ops marvel_pci_ops;
 extern void marvel_init_arch(void);
 extern void marvel_kill_arch(int);
-extern void marvel_machine_check(u64, u64, struct pt_regs *);
+extern void marvel_machine_check(u64, u64);
 extern void marvel_pci_tbi(struct pci_controller *, dma_addr_t, dma_addr_t);
 extern int marvel_pa_to_nid(unsigned long);
 extern int marvel_cpuid_to_nid(int);
@@ -64,7 +64,7 @@ void io7_clear_errors(struct io7 *io7);
 extern struct pci_ops mcpcia_pci_ops;
 extern void mcpcia_init_arch(void);
 extern void mcpcia_init_hoses(void);
-extern void mcpcia_machine_check(u64, u64, struct pt_regs *);
+extern void mcpcia_machine_check(u64, u64);
 extern void mcpcia_pci_tbi(struct pci_controller *, dma_addr_t, dma_addr_t);
 
 /* core_polaris.c */
@@ -72,21 +72,21 @@ extern struct pci_ops polaris_pci_ops;
 extern int polaris_read_config_dword(struct pci_dev *, int, u32 *);
 extern int polaris_write_config_dword(struct pci_dev *, int, u32);
 extern void polaris_init_arch(void);
-extern void polaris_machine_check(u64, u64, struct pt_regs *);
+extern void polaris_machine_check(u64, u64);
 #define polaris_pci_tbi ((void *)0)
 
 /* core_t2.c */
 extern struct pci_ops t2_pci_ops;
 extern void t2_init_arch(void);
 extern void t2_kill_arch(int);
-extern void t2_machine_check(u64, u64, struct pt_regs *);
+extern void t2_machine_check(u64, u64);
 extern void t2_pci_tbi(struct pci_controller *, dma_addr_t, dma_addr_t);
 
 /* core_titan.c */
 extern struct pci_ops titan_pci_ops;
 extern void titan_init_arch(void);
 extern void titan_kill_arch(int);
-extern void titan_machine_check(u64, u64, struct pt_regs *);
+extern void titan_machine_check(u64, u64);
 extern void titan_pci_tbi(struct pci_controller *, dma_addr_t, dma_addr_t);
 extern struct _alpha_agp_info *titan_agp_info(void);
 
@@ -94,14 +94,14 @@ extern struct _alpha_agp_info *titan_agp_info(void);
 extern struct pci_ops tsunami_pci_ops;
 extern void tsunami_init_arch(void);
 extern void tsunami_kill_arch(int);
-extern void tsunami_machine_check(u64, u64, struct pt_regs *);
+extern void tsunami_machine_check(u64, u64);
 extern void tsunami_pci_tbi(struct pci_controller *, dma_addr_t, dma_addr_t);
 
 /* core_wildfire.c */
 extern struct pci_ops wildfire_pci_ops;
 extern void wildfire_init_arch(void);
 extern void wildfire_kill_arch(int);
-extern void wildfire_machine_check(u64, u64, struct pt_regs *);
+extern void wildfire_machine_check(u64, u64);
 extern void wildfire_pci_tbi(struct pci_controller *, dma_addr_t, dma_addr_t);
 extern int wildfire_pa_to_nid(unsigned long);
 extern int wildfire_cpuid_to_nid(int);
@@ -133,7 +133,7 @@ extern void smp_percpu_timer_interrupt(struct pt_regs *);
 /* extern void reset_for_srm(void); */
 
 /* time.c */
-extern irqreturn_t timer_interrupt(int irq, void *dev, struct pt_regs * regs);
+extern irqreturn_t timer_interrupt(int irq, void *dev);
 extern void common_init_rtc(void);
 extern unsigned long est_cycle_freq;
 
@@ -177,7 +177,7 @@ extern void dik_show_regs(struct pt_regs *regs, unsigned long *r9_15);
 extern void die_if_kernel(char *, struct pt_regs *, long, unsigned long *);
 
 /* sys_titan.c */
-extern void titan_dispatch_irqs(u64, struct pt_regs *);
+extern void titan_dispatch_irqs(u64);
 
 /* ../mm/init.c */
 extern void switch_to_system_map(void);
@@ -214,5 +214,4 @@ extern struct mcheck_info
 #endif
 
 extern void process_mcheck_info(unsigned long vector, unsigned long la_ptr,
-                                struct pt_regs *regs, const char *machine,
-                                int expected);
+                                const char *machine, int expected);
diff --git a/arch/alpha/kernel/smp.c b/arch/alpha/kernel/smp.c
index 4dc273e537fd..596780e2c7da 100644
--- a/arch/alpha/kernel/smp.c
+++ b/arch/alpha/kernel/smp.c
@@ -515,12 +515,15 @@ smp_cpus_done(unsigned int max_cpus)
 void
 smp_percpu_timer_interrupt(struct pt_regs *regs)
 {
+        struct pt_regs *old_regs;
         int cpu = smp_processor_id();
         unsigned long user = user_mode(regs);
         struct cpuinfo_alpha *data = &cpu_data[cpu];
 
+        old_regs = set_irq_regs(regs);
+
         /* Record kernel PC.  */
-        profile_tick(CPU_PROFILING, regs);
+        profile_tick(CPU_PROFILING);
 
         if (!--data->prof_counter) {
                 /* We need to make like a normal interrupt -- otherwise
@@ -534,6 +537,7 @@ smp_percpu_timer_interrupt(struct pt_regs *regs)
 
                 irq_exit();
         }
+        set_irq_regs(old_regs);
 }
 
 int __init
diff --git a/arch/alpha/kernel/sys_alcor.c b/arch/alpha/kernel/sys_alcor.c
index d6926b7b1e99..49bedfbbd31b 100644
--- a/arch/alpha/kernel/sys_alcor.c
+++ b/arch/alpha/kernel/sys_alcor.c
@@ -100,7 +100,7 @@ static struct hw_interrupt_type alcor_irq_type = {
 };
 
 static void
-alcor_device_interrupt(unsigned long vector, struct pt_regs *regs)
+alcor_device_interrupt(unsigned long vector)
 {
         unsigned long pld;
         unsigned int i;
@@ -116,9 +116,9 @@ alcor_device_interrupt(unsigned long vector, struct pt_regs *regs)
                 i = ffz(~pld);
                 pld &= pld - 1; /* clear least bit set */
                 if (i == 31) {
-                        isa_device_interrupt(vector, regs);
+                        isa_device_interrupt(vector);
                 } else {
-                        handle_irq(16 + i, regs);
+                        handle_irq(16 + i);
                 }
         }
 }
diff --git a/arch/alpha/kernel/sys_cabriolet.c b/arch/alpha/kernel/sys_cabriolet.c
index 25a215067da8..ace475c124f6 100644
--- a/arch/alpha/kernel/sys_cabriolet.c
+++ b/arch/alpha/kernel/sys_cabriolet.c
@@ -82,7 +82,7 @@ static struct hw_interrupt_type cabriolet_irq_type = {
 };
 
 static void 
-cabriolet_device_interrupt(unsigned long v, struct pt_regs *r)
+cabriolet_device_interrupt(unsigned long v)
 {
         unsigned long pld;
         unsigned int i;
@@ -98,15 +98,15 @@ cabriolet_device_interrupt(unsigned long v, struct pt_regs *r)
                 i = ffz(~pld);
                 pld &= pld - 1; /* clear least bit set */
                 if (i == 4) {
-                        isa_device_interrupt(v, r);
+                        isa_device_interrupt(v);
                 } else {
-                        handle_irq(16 + i, r);
+                        handle_irq(16 + i);
                 }
         }
 }
 
 static void __init
-common_init_irq(void (*srm_dev_int)(unsigned long v, struct pt_regs *r))
+common_init_irq(void (*srm_dev_int)(unsigned long v))
 {
         init_i8259a_irqs();
 
@@ -154,18 +154,18 @@ cabriolet_init_irq(void)
    too invasive though.  */
 
 static void
-pc164_srm_device_interrupt(unsigned long v, struct pt_regs *r)
+pc164_srm_device_interrupt(unsigned long v)
 {
         __min_ipl = getipl();
-        srm_device_interrupt(v, r);
+        srm_device_interrupt(v);
         __min_ipl = 0;
 }
 
 static void
-pc164_device_interrupt(unsigned long v, struct pt_regs *r)
+pc164_device_interrupt(unsigned long v)
 {
         __min_ipl = getipl();
-        cabriolet_device_interrupt(v, r);
+        cabriolet_device_interrupt(v);
         __min_ipl = 0;
 }
 
diff --git a/arch/alpha/kernel/sys_dp264.c b/arch/alpha/kernel/sys_dp264.c
index dd6103b867e7..85d2f933dd07 100644
--- a/arch/alpha/kernel/sys_dp264.c
+++ b/arch/alpha/kernel/sys_dp264.c
@@ -217,7 +217,7 @@ static struct hw_interrupt_type clipper_irq_type = {
 };
 
 static void
-dp264_device_interrupt(unsigned long vector, struct pt_regs * regs)
+dp264_device_interrupt(unsigned long vector)
 {
 #if 1
         printk("dp264_device_interrupt: NOT IMPLEMENTED YET!! \n");
@@ -236,9 +236,9 @@ dp264_device_interrupt(unsigned long vector, struct pt_regs * regs)
                 i = ffz(~pld);
                 pld &= pld - 1; /* clear least bit set */
                 if (i == 55)
-                        isa_device_interrupt(vector, regs);
+                        isa_device_interrupt(vector);
                 else
-                        handle_irq(16 + i, 16 + i, regs);
+                        handle_irq(16 + i);
 #if 0
                 TSUNAMI_cchip->dir0.csr = 1UL << i; mb();
                 tmp = TSUNAMI_cchip->dir0.csr;
@@ -248,7 +248,7 @@ dp264_device_interrupt(unsigned long vector, struct pt_regs * regs)
 }
 
 static void 
-dp264_srm_device_interrupt(unsigned long vector, struct pt_regs * regs)
+dp264_srm_device_interrupt(unsigned long vector)
 {
         int irq;
 
@@ -268,11 +268,11 @@ dp264_srm_device_interrupt(unsigned long vector, struct pt_regs * regs)
         if (irq >= 32)
                 irq -= 16;
 
-        handle_irq(irq, regs);
+        handle_irq(irq);
 }
 
 static void 
-clipper_srm_device_interrupt(unsigned long vector, struct pt_regs * regs)
+clipper_srm_device_interrupt(unsigned long vector)
 {
         int irq;
 
@@ -290,7 +290,7 @@ clipper_srm_device_interrupt(unsigned long vector, struct pt_regs * regs)
          *
          * Eg IRQ 24 is DRIR bit 8, etc, etc
          */
-        handle_irq(irq, regs);
+        handle_irq(irq);
 }
 
 static void __init
diff --git a/arch/alpha/kernel/sys_eb64p.c b/arch/alpha/kernel/sys_eb64p.c
index ed108b66ec09..9c5a306dc0ee 100644
--- a/arch/alpha/kernel/sys_eb64p.c
+++ b/arch/alpha/kernel/sys_eb64p.c
@@ -80,7 +80,7 @@ static struct hw_interrupt_type eb64p_irq_type = {
 };
 
 static void 
-eb64p_device_interrupt(unsigned long vector, struct pt_regs *regs)
+eb64p_device_interrupt(unsigned long vector)
 {
         unsigned long pld;
         unsigned int i;
@@ -97,9 +97,9 @@ eb64p_device_interrupt(unsigned long vector, struct pt_regs *regs)
                 pld &= pld - 1; /* clear least bit set */
 
                 if (i == 5) {
-                        isa_device_interrupt(vector, regs);
+                        isa_device_interrupt(vector);
                 } else {
-                        handle_irq(16 + i, regs);
+                        handle_irq(16 + i);
                 }
         }
 }
diff --git a/arch/alpha/kernel/sys_eiger.c b/arch/alpha/kernel/sys_eiger.c
index 64a785baf53a..7ef3b6fb3700 100644
--- a/arch/alpha/kernel/sys_eiger.c
+++ b/arch/alpha/kernel/sys_eiger.c
@@ -91,7 +91,7 @@ static struct hw_interrupt_type eiger_irq_type = {
 };
 
 static void
-eiger_device_interrupt(unsigned long vector, struct pt_regs * regs)
+eiger_device_interrupt(unsigned long vector)
 {
         unsigned intstatus;
 
@@ -118,20 +118,20 @@ eiger_device_interrupt(unsigned long vector, struct pt_regs * regs)
                  * despatch an interrupt if it's set.
                  */
 
-                if (intstatus & 8) handle_irq(16+3, regs);
-                if (intstatus & 4) handle_irq(16+2, regs);
-                if (intstatus & 2) handle_irq(16+1, regs);
-                if (intstatus & 1) handle_irq(16+0, regs);
+                if (intstatus & 8) handle_irq(16+3);
+                if (intstatus & 4) handle_irq(16+2);
+                if (intstatus & 2) handle_irq(16+1);
+                if (intstatus & 1) handle_irq(16+0);
         } else {
-                isa_device_interrupt(vector, regs);
+                isa_device_interrupt(vector);
         }
 }
 
 static void
-eiger_srm_device_interrupt(unsigned long vector, struct pt_regs * regs)
+eiger_srm_device_interrupt(unsigned long vector)
 {
         int irq = (vector - 0x800) >> 4;
-        handle_irq(irq, regs);
+        handle_irq(irq);
 }
 
 static void __init
diff --git a/arch/alpha/kernel/sys_jensen.c b/arch/alpha/kernel/sys_jensen.c
index 4ac2b328b8de..2c3de97de46c 100644
--- a/arch/alpha/kernel/sys_jensen.c
+++ b/arch/alpha/kernel/sys_jensen.c
@@ -129,7 +129,7 @@ static struct hw_interrupt_type jensen_local_irq_type = {
 };
 
 static void 
-jensen_device_interrupt(unsigned long vector, struct pt_regs * regs)
+jensen_device_interrupt(unsigned long vector)
 {
         int irq;
 
@@ -189,7 +189,7 @@ jensen_device_interrupt(unsigned long vector, struct pt_regs * regs)
           if (cc - last_msg > ((JENSEN_CYCLES_PER_SEC) * 3) ||
               irq != last_irq) {
                 printk(KERN_CRIT " irq %d count %d cc %u @ %lx\n",
-                       irq, count, cc-last_cc, regs->pc);
+                       irq, count, cc-last_cc, get_irq_regs()->pc);
                 count = 0;
                 last_msg = cc;
                 last_irq = irq;
@@ -198,7 +198,7 @@ jensen_device_interrupt(unsigned long vector, struct pt_regs * regs)
         }
 #endif
 
-        handle_irq(irq, regs);
+        handle_irq(irq);
 }
 
 static void __init
@@ -244,7 +244,7 @@ jensen_init_arch(void)
 }
 
 static void
-jensen_machine_check (u64 vector, u64 la, struct pt_regs *regs)
+jensen_machine_check (u64 vector, u64 la)
 {
         printk(KERN_CRIT "Machine check\n");
 }
diff --git a/arch/alpha/kernel/sys_marvel.c b/arch/alpha/kernel/sys_marvel.c
index 36d215954376..e349f03b830e 100644
--- a/arch/alpha/kernel/sys_marvel.c
+++ b/arch/alpha/kernel/sys_marvel.c
@@ -38,7 +38,7 @@
  * Interrupt handling.
  */
 static void 
-io7_device_interrupt(unsigned long vector, struct pt_regs * regs)
+io7_device_interrupt(unsigned long vector)
 {
         unsigned int pid;
         unsigned int irq;
@@ -64,7 +64,7 @@ io7_device_interrupt(unsigned long vector, struct pt_regs * regs)
         irq &= MARVEL_IRQ_VEC_IRQ_MASK;         /* not too many bits */
         irq |= pid << MARVEL_IRQ_VEC_PE_SHIFT;  /* merge the pid     */
 
-        handle_irq(irq, regs);
+        handle_irq(irq);
 }
 
 static volatile unsigned long *
diff --git a/arch/alpha/kernel/sys_miata.c b/arch/alpha/kernel/sys_miata.c
index 61ac56f8eeea..b8b817feb1ee 100644
--- a/arch/alpha/kernel/sys_miata.c
+++ b/arch/alpha/kernel/sys_miata.c
@@ -33,7 +33,7 @@
 
 
 static void 
-miata_srm_device_interrupt(unsigned long vector, struct pt_regs * regs)
+miata_srm_device_interrupt(unsigned long vector)
 {
         int irq;
 
@@ -56,7 +56,7 @@ miata_srm_device_interrupt(unsigned long vector, struct pt_regs * regs)
         if (irq >= 16)
                 irq = irq + 8;
 
-        handle_irq(irq, regs);
+        handle_irq(irq);
 }
 
 static void __init
diff --git a/arch/alpha/kernel/sys_mikasa.c b/arch/alpha/kernel/sys_mikasa.c
index cc4c58111366..8d3e9429c5ee 100644
--- a/arch/alpha/kernel/sys_mikasa.c
+++ b/arch/alpha/kernel/sys_mikasa.c
@@ -79,7 +79,7 @@ static struct hw_interrupt_type mikasa_irq_type = {
 };
 
 static void 
-mikasa_device_interrupt(unsigned long vector, struct pt_regs *regs)
+mikasa_device_interrupt(unsigned long vector)
 {
         unsigned long pld;
         unsigned int i;
@@ -97,9 +97,9 @@ mikasa_device_interrupt(unsigned long vector, struct pt_regs *regs)
                 i = ffz(~pld);
                 pld &= pld - 1; /* clear least bit set */
                 if (i < 16) {
-                        isa_device_interrupt(vector, regs);
+                        isa_device_interrupt(vector);
                 } else {
-                        handle_irq(i, regs);
+                        handle_irq(i);
                 }
         }
 }
@@ -182,8 +182,7 @@ mikasa_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
 
 #if defined(CONFIG_ALPHA_GENERIC) || !defined(CONFIG_ALPHA_PRIMO)
 static void
-mikasa_apecs_machine_check(unsigned long vector, unsigned long la_ptr,
-                           struct pt_regs * regs)
+mikasa_apecs_machine_check(unsigned long vector, unsigned long la_ptr)
 {
 #define MCHK_NO_DEVSEL 0x205U
 #define MCHK_NO_TABT 0x204U
@@ -202,7 +201,7 @@ mikasa_apecs_machine_check(unsigned long vector, unsigned long la_ptr,
         mb();
 
         code = mchk_header->code;
-        process_mcheck_info(vector, la_ptr, regs, "MIKASA APECS",
+        process_mcheck_info(vector, la_ptr, "MIKASA APECS",
                             (mcheck_expected(0)
                              && (code == MCHK_NO_DEVSEL
                                  || code == MCHK_NO_TABT)));
diff --git a/arch/alpha/kernel/sys_nautilus.c b/arch/alpha/kernel/sys_nautilus.c
index c0d696efec5b..93744bab73fb 100644
--- a/arch/alpha/kernel/sys_nautilus.c
+++ b/arch/alpha/kernel/sys_nautilus.c
@@ -124,8 +124,7 @@ naut_sys_machine_check(unsigned long vector, unsigned long la_ptr,
    in the system.  They are analysed separately but all starts here.  */
 
 void
-nautilus_machine_check(unsigned long vector, unsigned long la_ptr,
-                       struct pt_regs *regs)
+nautilus_machine_check(unsigned long vector, unsigned long la_ptr)
 {
         char *mchk_class;
 
@@ -165,7 +164,7 @@ nautilus_machine_check(unsigned long vector, unsigned long la_ptr,
         else if (vector == SCB_Q_SYSMCHK)
                 mchk_class = "Fatal";
         else {
-                ev6_machine_check(vector, la_ptr, regs);
+                ev6_machine_check(vector, la_ptr);
                 return;
         }
 
@@ -173,7 +172,7 @@ nautilus_machine_check(unsigned long vector, unsigned long la_ptr,
                          "[%s System Machine Check (NMI)]\n",
                vector, mchk_class);
 
-        naut_sys_machine_check(vector, la_ptr, regs);
+        naut_sys_machine_check(vector, la_ptr, get_irq_regs());
 
         /* Tell the PALcode to clear the machine check */
         draina();
diff --git a/arch/alpha/kernel/sys_noritake.c b/arch/alpha/kernel/sys_noritake.c
index 2d3cff7e8c5f..de6ba3432e8a 100644
--- a/arch/alpha/kernel/sys_noritake.c
+++ b/arch/alpha/kernel/sys_noritake.c
@@ -77,7 +77,7 @@ static struct hw_interrupt_type noritake_irq_type = {
 };
 
 static void 
-noritake_device_interrupt(unsigned long vector, struct pt_regs *regs)
+noritake_device_interrupt(unsigned long vector)
 {
         unsigned long pld;
         unsigned int i;
@@ -96,15 +96,15 @@ noritake_device_interrupt(unsigned long vector, struct pt_regs *regs)
                 i = ffz(~pld);
                 pld &= pld - 1; /* clear least bit set */
                 if (i < 16) {
-                        isa_device_interrupt(vector, regs);
+                        isa_device_interrupt(vector);
                 } else {
-                        handle_irq(i, regs);
+                        handle_irq(i);
                 }
         }
 }
 
 static void 
-noritake_srm_device_interrupt(unsigned long vector, struct pt_regs * regs)
+noritake_srm_device_interrupt(unsigned long vector)
 {
         int irq;
 
@@ -122,7 +122,7 @@ noritake_srm_device_interrupt(unsigned long vector, struct pt_regs * regs)
         if (irq >= 16)
                 irq = irq + 1;
 
-        handle_irq(irq, regs);
+        handle_irq(irq);
 }
 
 static void __init
@@ -264,8 +264,7 @@ noritake_swizzle(struct pci_dev *dev, u8 *pinp)
 
 #if defined(CONFIG_ALPHA_GENERIC) || !defined(CONFIG_ALPHA_PRIMO)
 static void
-noritake_apecs_machine_check(unsigned long vector, unsigned long la_ptr,
-                             struct pt_regs * regs)
+noritake_apecs_machine_check(unsigned long vector, unsigned long la_ptr)
 {
 #define MCHK_NO_DEVSEL 0x205U
 #define MCHK_NO_TABT 0x204U
@@ -284,7 +283,7 @@ noritake_apecs_machine_check(unsigned long vector, unsigned long la_ptr,
         mb();
 
         code = mchk_header->code;
-        process_mcheck_info(vector, la_ptr, regs, "NORITAKE APECS",
+        process_mcheck_info(vector, la_ptr, "NORITAKE APECS",
                             (mcheck_expected(0)
                              && (code == MCHK_NO_DEVSEL
                                  || code == MCHK_NO_TABT)));
diff --git a/arch/alpha/kernel/sys_rawhide.c b/arch/alpha/kernel/sys_rawhide.c
index 949607e3d6fb..581d08c70b92 100644
--- a/arch/alpha/kernel/sys_rawhide.c
+++ b/arch/alpha/kernel/sys_rawhide.c
@@ -134,7 +134,7 @@ static struct hw_interrupt_type rawhide_irq_type = {
 };
 
 static void 
-rawhide_srm_device_interrupt(unsigned long vector, struct pt_regs * regs)
+rawhide_srm_device_interrupt(unsigned long vector)
 {
         int irq;
 
@@ -158,7 +158,7 @@ rawhide_srm_device_interrupt(unsigned long vector, struct pt_regs * regs)
         /* Adjust by which hose it is from.  */
         irq -= ((irq + 16) >> 2) & 0x38;
 
-        handle_irq(irq, regs);
+        handle_irq(irq);
 }
 
 static void __init
diff --git a/arch/alpha/kernel/sys_rx164.c b/arch/alpha/kernel/sys_rx164.c
index 6ae506052635..ce1faa6f1df1 100644
--- a/arch/alpha/kernel/sys_rx164.c
+++ b/arch/alpha/kernel/sys_rx164.c
@@ -83,7 +83,7 @@ static struct hw_interrupt_type rx164_irq_type = {
 };
 
 static void 
-rx164_device_interrupt(unsigned long vector, struct pt_regs *regs)
+rx164_device_interrupt(unsigned long vector)
 {
         unsigned long pld;
         volatile unsigned int *dirr;
@@ -102,9 +102,9 @@ rx164_device_interrupt(unsigned long vector, struct pt_regs *regs)
                 i = ffz(~pld);
                 pld &= pld - 1; /* clear least bit set */
                 if (i == 20) {
-                        isa_no_iack_sc_device_interrupt(vector, regs);
+                        isa_no_iack_sc_device_interrupt(vector);
                 } else {
-                        handle_irq(16+i, regs);
+                        handle_irq(16+i);
                 }
         }
 }
diff --git a/arch/alpha/kernel/sys_sable.c b/arch/alpha/kernel/sys_sable.c
index a7a14647b50e..906019cfa681 100644
--- a/arch/alpha/kernel/sys_sable.c
+++ b/arch/alpha/kernel/sys_sable.c
@@ -512,7 +512,7 @@ static struct hw_interrupt_type sable_lynx_irq_type = {
 };
 
 static void 
-sable_lynx_srm_device_interrupt(unsigned long vector, struct pt_regs * regs)
+sable_lynx_srm_device_interrupt(unsigned long vector)
 {
         /* Note that the vector reported by the SRM PALcode corresponds
            to the interrupt mask bits, but we have to manage via the
@@ -526,7 +526,7 @@ sable_lynx_srm_device_interrupt(unsigned long vector, struct pt_regs * regs)
         printk("%s: vector 0x%lx bit 0x%x irq 0x%x\n",
                __FUNCTION__, vector, bit, irq);
 #endif
-        handle_irq(irq, regs);
+        handle_irq(irq);
 }
 
 static void __init
diff --git a/arch/alpha/kernel/sys_takara.c b/arch/alpha/kernel/sys_takara.c
index 2c75cd1fd81a..9bd9a31450c6 100644
--- a/arch/alpha/kernel/sys_takara.c
+++ b/arch/alpha/kernel/sys_takara.c
@@ -85,7 +85,7 @@ static struct hw_interrupt_type takara_irq_type = {
 };
 
 static void
-takara_device_interrupt(unsigned long vector, struct pt_regs *regs)
+takara_device_interrupt(unsigned long vector)
 {
         unsigned intstatus;
 
@@ -112,20 +112,20 @@ takara_device_interrupt(unsigned long vector, struct pt_regs *regs)
                  * despatch an interrupt if it's set.
                  */
 
-                if (intstatus & 8) handle_irq(16+3, regs);
-                if (intstatus & 4) handle_irq(16+2, regs);
-                if (intstatus & 2) handle_irq(16+1, regs);
-                if (intstatus & 1) handle_irq(16+0, regs);
+                if (intstatus & 8) handle_irq(16+3);
+                if (intstatus & 4) handle_irq(16+2);
+                if (intstatus & 2) handle_irq(16+1);
+                if (intstatus & 1) handle_irq(16+0);
         } else {
-                isa_device_interrupt (vector, regs);
+                isa_device_interrupt (vector);
         }
 }
 
 static void 
-takara_srm_device_interrupt(unsigned long vector, struct pt_regs * regs)
+takara_srm_device_interrupt(unsigned long vector)
 {
         int irq = (vector - 0x800) >> 4;
-        handle_irq(irq, regs);
+        handle_irq(irq);
 }
 
 static void __init
diff --git a/arch/alpha/kernel/sys_titan.c b/arch/alpha/kernel/sys_titan.c
index 302aab38d95f..29ab7db81c30 100644
--- a/arch/alpha/kernel/sys_titan.c
+++ b/arch/alpha/kernel/sys_titan.c
@@ -167,18 +167,18 @@ titan_set_irq_affinity(unsigned int irq, cpumask_t affinity)
 }
 
 static void
-titan_device_interrupt(unsigned long vector, struct pt_regs * regs)
+titan_device_interrupt(unsigned long vector)
 {
         printk("titan_device_interrupt: NOT IMPLEMENTED YET!! \n");
 }
 
 static void 
-titan_srm_device_interrupt(unsigned long vector, struct pt_regs * regs)
+titan_srm_device_interrupt(unsigned long vector)
 {
         int irq;
 
         irq = (vector - 0x800) >> 4;
-        handle_irq(irq, regs);
+        handle_irq(irq);
 }
 
 
@@ -204,7 +204,7 @@ static struct hw_interrupt_type titan_irq_type = {
 };
 
 static irqreturn_t
-titan_intr_nop(int irq, void *dev_id, struct pt_regs *regs)                    
+titan_intr_nop(int irq, void *dev_id)
 {
       /*
        * This is a NOP interrupt handler for the purposes of
@@ -243,7 +243,7 @@ titan_legacy_init_irq(void)
 }
 
 void
-titan_dispatch_irqs(u64 mask, struct pt_regs *regs)
+titan_dispatch_irqs(u64 mask)
 {
         unsigned long vector;
 
@@ -263,7 +263,7 @@ titan_dispatch_irqs(u64 mask, struct pt_regs *regs)
                 vector = 0x900 + (vector << 4); /* convert to SRM vector */
                 
                 /* dispatch it */
-                alpha_mv.device_interrupt(vector, regs);
+                alpha_mv.device_interrupt(vector);
         }
 }
   
diff --git a/arch/alpha/kernel/sys_wildfire.c b/arch/alpha/kernel/sys_wildfire.c
index 22c5798fe083..42c3eede4d09 100644
--- a/arch/alpha/kernel/sys_wildfire.c
+++ b/arch/alpha/kernel/sys_wildfire.c
@@ -234,7 +234,7 @@ wildfire_init_irq(void)
 }
 
 static void 
-wildfire_device_interrupt(unsigned long vector, struct pt_regs * regs)
+wildfire_device_interrupt(unsigned long vector)
 {
         int irq;
 
@@ -246,7 +246,7 @@ wildfire_device_interrupt(unsigned long vector, struct pt_regs * regs)
          * bits 5-0:    irq in PCA
          */
 
-        handle_irq(irq, regs);
+        handle_irq(irq);
         return;
 }
 
diff --git a/arch/alpha/kernel/time.c b/arch/alpha/kernel/time.c
index 581ddcc22fc5..cf0666523989 100644
--- a/arch/alpha/kernel/time.c
+++ b/arch/alpha/kernel/time.c
@@ -104,7 +104,7 @@ unsigned long long sched_clock(void)
  * timer_interrupt() needs to keep up the real-time clock,
  * as well as call the "do_timer()" routine every clocktick
  */
-irqreturn_t timer_interrupt(int irq, void *dev, struct pt_regs * regs)
+irqreturn_t timer_interrupt(int irq, void *dev)
 {
         unsigned long delta;
         __u32 now;
@@ -112,7 +112,7 @@ irqreturn_t timer_interrupt(int irq, void *dev, struct pt_regs * regs)
 
 #ifndef CONFIG_SMP
         /* Not SMP, do kernel PC profiling here.  */
-        profile_tick(CPU_PROFILING, regs);
+        profile_tick(CPU_PROFILING);
 #endif
 
         write_seqlock(&xtime_lock);
@@ -132,7 +132,7 @@ irqreturn_t timer_interrupt(int irq, void *dev, struct pt_regs * regs)
         while (nticks > 0) {
                 do_timer(1);
 #ifndef CONFIG_SMP
-                update_process_times(user_mode(regs));
+                update_process_times(user_mode(get_irq_regs()));
 #endif
                 nticks--;
         }
diff --git a/arch/arm/common/locomo.c b/arch/arm/common/locomo.c
index 181ef1ead5b8..80a72c75214f 100644
--- a/arch/arm/common/locomo.c
+++ b/arch/arm/common/locomo.c
@@ -163,8 +163,7 @@ static struct locomo_dev_info locomo_devices[] = {
 #define LOCOMO_IRQ_LT_START     (IRQ_LOCOMO_LT)
 #define LOCOMO_IRQ_SPI_START    (IRQ_LOCOMO_SPI_RFR)
 
-static void locomo_handler(unsigned int irq, struct irqdesc *desc,
-                        struct pt_regs *regs)
+static void locomo_handler(unsigned int irq, struct irqdesc *desc)
 {
         int req, i;
         struct irqdesc *d;
@@ -182,7 +181,7 @@ static void locomo_handler(unsigned int irq, struct irqdesc *desc,
                 d = irq_desc + irq;
                 for (i = 0; i <= 3; i++, d++, irq++) {
                         if (req & (0x0100 << i)) {
-                                desc_handle_irq(irq, d, regs);
+                                desc_handle_irq(irq, d);
                         }
 
                 }
@@ -218,15 +217,14 @@ static struct irq_chip locomo_chip = {
         .unmask = locomo_unmask_irq,
 };
 
-static void locomo_key_handler(unsigned int irq, struct irqdesc *desc,
-                            struct pt_regs *regs)
+static void locomo_key_handler(unsigned int irq, struct irqdesc *desc)
 {
         struct irqdesc *d;
         void __iomem *mapbase = get_irq_chipdata(irq);
 
         if (locomo_readl(mapbase + LOCOMO_KEYBOARD + LOCOMO_KIC) & 0x0001) {
                 d = irq_desc + LOCOMO_IRQ_KEY_START;
-                desc_handle_irq(LOCOMO_IRQ_KEY_START, d, regs);
+                desc_handle_irq(LOCOMO_IRQ_KEY_START, d);
         }
 }
 
@@ -264,8 +262,7 @@ static struct irq_chip locomo_key_chip = {
         .unmask = locomo_key_unmask_irq,
 };
 
-static void locomo_gpio_handler(unsigned int irq, struct irqdesc *desc,
-                             struct pt_regs *regs)
+static void locomo_gpio_handler(unsigned int irq, struct irqdesc *desc)
 {
         int req, i;
         struct irqdesc *d;
@@ -280,7 +277,7 @@ static void locomo_gpio_handler(unsigned int irq, struct irqdesc *desc,
                 d = irq_desc + LOCOMO_IRQ_GPIO_START;
                 for (i = 0; i <= 15; i++, irq++, d++) {
                         if (req & (0x0001 << i)) {
-                                desc_handle_irq(irq, d, regs);
+                                desc_handle_irq(irq, d);
                         }
                 }
         }
@@ -328,15 +325,14 @@ static struct irq_chip locomo_gpio_chip = {
         .unmask = locomo_gpio_unmask_irq,
 };
 
-static void locomo_lt_handler(unsigned int irq, struct irqdesc *desc,
-                           struct pt_regs *regs)
+static void locomo_lt_handler(unsigned int irq, struct irqdesc *desc)
 {
         struct irqdesc *d;
         void __iomem *mapbase = get_irq_chipdata(irq);
 
         if (locomo_readl(mapbase + LOCOMO_LTINT) & 0x0001) {
                 d = irq_desc + LOCOMO_IRQ_LT_START;
-                desc_handle_irq(LOCOMO_IRQ_LT_START, d, regs);
+                desc_handle_irq(LOCOMO_IRQ_LT_START, d);
         }
 }
 
@@ -374,8 +370,7 @@ static struct irq_chip locomo_lt_chip = {
         .unmask = locomo_lt_unmask_irq,
 };
 
-static void locomo_spi_handler(unsigned int irq, struct irqdesc *desc,
-                            struct pt_regs *regs)
+static void locomo_spi_handler(unsigned int irq, struct irqdesc *desc)
 {
         int req, i;
         struct irqdesc *d;
@@ -388,7 +383,7 @@ static void locomo_spi_handler(unsigned int irq, struct irqdesc *desc,
 
                 for (i = 0; i <= 3; i++, irq++, d++) {
                         if (req & (0x0001 << i)) {
-                                desc_handle_irq(irq, d, regs);
+                                desc_handle_irq(irq, d);
                         }
                 }
         }
diff --git a/arch/arm/common/sa1111.c b/arch/arm/common/sa1111.c
index 30046ad41ced..d5f72010a6f3 100644
--- a/arch/arm/common/sa1111.c
+++ b/arch/arm/common/sa1111.c
@@ -147,7 +147,7 @@ void __init sa1111_adjust_zones(int node, unsigned long *size, unsigned long *ho
  * will call us again if there are more interrupts to process.
  */
 static void
-sa1111_irq_handler(unsigned int irq, struct irqdesc *desc, struct pt_regs *regs)
+sa1111_irq_handler(unsigned int irq, struct irqdesc *desc)
 {
         unsigned int stat0, stat1, i;
         void __iomem *base = get_irq_data(irq);
@@ -162,17 +162,17 @@ sa1111_irq_handler(unsigned int irq, struct irqdesc *desc, struct pt_regs *regs)
         sa1111_writel(stat1, base + SA1111_INTSTATCLR1);
 
         if (stat0 == 0 && stat1 == 0) {
-                do_bad_IRQ(irq, desc, regs);
+                do_bad_IRQ(irq, desc);
                 return;
         }
 
         for (i = IRQ_SA1111_START; stat0; i++, stat0 >>= 1)
                 if (stat0 & 1)
-                        handle_edge_irq(i, irq_desc + i, regs);
+                        handle_edge_irq(i, irq_desc + i);
 
         for (i = IRQ_SA1111_START + 32; stat1; i++, stat1 >>= 1)
                 if (stat1 & 1)
-                        handle_edge_irq(i, irq_desc + i, regs);
+                        handle_edge_irq(i, irq_desc + i);
 
         /* For level-based interrupts */
         desc->chip->unmask(irq);
diff --git a/arch/arm/common/sharpsl_pm.c b/arch/arm/common/sharpsl_pm.c
index f412dedda684..605dedf96790 100644
--- a/arch/arm/common/sharpsl_pm.c
+++ b/arch/arm/common/sharpsl_pm.c
@@ -258,7 +258,7 @@ static void sharpsl_ac_timer(unsigned long data)
 }
 
 
-irqreturn_t sharpsl_ac_isr(int irq, void *dev_id, struct pt_regs *fp)
+irqreturn_t sharpsl_ac_isr(int irq, void *dev_id)
 {
         /* Delay the event slightly to debounce */
         /* Must be a smaller delay than the chrg_full_isr below */
@@ -293,7 +293,7 @@ static void sharpsl_chrg_full_timer(unsigned long data)
 /* Charging Finished Interrupt (Not present on Corgi) */
 /* Can trigger at the same time as an AC staus change so
    delay until after that has been processed */
-irqreturn_t sharpsl_chrg_full_isr(int irq, void *dev_id, struct pt_regs *fp)
+irqreturn_t sharpsl_chrg_full_isr(int irq, void *dev_id)
 {
         if (sharpsl_pm.flags & SHARPSL_SUSPENDED)
                 return IRQ_HANDLED;
@@ -304,7 +304,7 @@ irqreturn_t sharpsl_chrg_full_isr(int irq, void *dev_id, struct pt_regs *fp)
         return IRQ_HANDLED;
 }
 
-irqreturn_t sharpsl_fatal_isr(int irq, void *dev_id, struct pt_regs *fp)
+irqreturn_t sharpsl_fatal_isr(int irq, void *dev_id)
 {
         int is_fatal = 0;
 
diff --git a/arch/arm/common/time-acorn.c b/arch/arm/common/time-acorn.c
index 3f60dd9aca80..34038eccbba9 100644
--- a/arch/arm/common/time-acorn.c
+++ b/arch/arm/common/time-acorn.c
@@ -67,10 +67,10 @@ void __init ioctime_init(void)
 }
 
 static irqreturn_t
-ioc_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+ioc_timer_interrupt(int irq, void *dev_id)
 {
         write_seqlock(&xtime_lock);
-        timer_tick(regs);
+        timer_tick();
         write_sequnlock(&xtime_lock);
         return IRQ_HANDLED;
 }
diff --git a/arch/arm/kernel/ecard.c b/arch/arm/kernel/ecard.c
index 3e14b1348c0b..b27513a0f11e 100644
--- a/arch/arm/kernel/ecard.c
+++ b/arch/arm/kernel/ecard.c
@@ -567,7 +567,7 @@ static void ecard_check_lockup(struct irqdesc *desc)
 }
 
 static void
-ecard_irq_handler(unsigned int irq, struct irqdesc *desc, struct pt_regs *regs)
+ecard_irq_handler(unsigned int irq, struct irqdesc *desc)
 {
         ecard_t *ec;
         int called = 0;
@@ -586,7 +586,7 @@ ecard_irq_handler(unsigned int irq, struct irqdesc *desc, struct pt_regs *regs)
 
                 if (pending) {
                         struct irqdesc *d = irq_desc + ec->irq;
-                        desc_handle_irq(ec->irq, d, regs);
+                        desc_handle_irq(ec->irq, d);
                         called ++;
                 }
         }
@@ -609,7 +609,7 @@ static unsigned char first_set[] =
 };
 
 static void
-ecard_irqexp_handler(unsigned int irq, struct irqdesc *desc, struct pt_regs *regs)
+ecard_irqexp_handler(unsigned int irq, struct irqdesc *desc)
 {
         const unsigned int statusmask = 15;
         unsigned int status;
@@ -633,7 +633,7 @@ ecard_irqexp_handler(unsigned int irq, struct irqdesc *desc, struct pt_regs *reg
                          * Serial cards should go in 0/1, ethernet/scsi in 2/3
                          * otherwise you will lose serial data at high speeds!
                          */
-                        desc_handle_irq(ec->irq, d, regs);
+                        desc_handle_irq(ec->irq, d);
                 } else {
                         printk(KERN_WARNING "card%d: interrupt from unclaimed "
                                "card???\n", slot);
diff --git a/arch/arm/kernel/irq.c b/arch/arm/kernel/irq.c
index 2e1bf830fe11..2c4ff1cbe334 100644
--- a/arch/arm/kernel/irq.c
+++ b/arch/arm/kernel/irq.c
@@ -111,6 +111,7 @@ static struct irq_desc bad_irq_desc = {
  */
 asmlinkage void asm_do_IRQ(unsigned int irq, struct pt_regs *regs)
 {
+        struct pt_regs *old_regs = set_irq_regs(regs);
         struct irqdesc *desc = irq_desc + irq;
 
         /*
@@ -122,12 +123,13 @@ asmlinkage void asm_do_IRQ(unsigned int irq, struct pt_regs *regs)
 
         irq_enter();
 
-        desc_handle_irq(irq, desc, regs);
+        desc_handle_irq(irq, desc);
 
         /* AT91 specific workaround */
         irq_finish(irq);
 
         irq_exit();
+        set_irq_regs(old_regs);
 }
 
 void set_irq_flags(unsigned int irq, unsigned int iflags)
diff --git a/arch/arm/kernel/time.c b/arch/arm/kernel/time.c
index b030320b17c7..c03cab5c4c79 100644
--- a/arch/arm/kernel/time.c
+++ b/arch/arm/kernel/time.c
@@ -27,6 +27,7 @@
 #include <linux/profile.h>
 #include <linux/sysdev.h>
 #include <linux/timer.h>
+#include <linux/irq.h>
 
 #include <asm/leds.h>
 #include <asm/thread_info.h>
@@ -324,9 +325,10 @@ EXPORT_SYMBOL(restore_time_delta);
 /*
  * Kernel system timer support.
  */
-void timer_tick(struct pt_regs *regs)
+void timer_tick(void)
 {
-        profile_tick(CPU_PROFILING, regs);
+        struct pt_regs *regs = get_irq_regs();
+        profile_tick(CPU_PROFILING);
         do_leds();
         do_set_rtc();
         do_timer(1);
diff --git a/arch/arm/mach-aaec2000/core.c b/arch/arm/mach-aaec2000/core.c
index baa997c857dc..fe3d297d682d 100644
--- a/arch/arm/mach-aaec2000/core.c
+++ b/arch/arm/mach-aaec2000/core.c
@@ -127,12 +127,12 @@ static unsigned long aaec2000_gettimeoffset(void)
 
 /* We enter here with IRQs enabled */
 static irqreturn_t
-aaec2000_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+aaec2000_timer_interrupt(int irq, void *dev_id)
 {
         /* TODO: Check timer accuracy */
         write_seqlock(&xtime_lock);
 
-        timer_tick(regs);
+        timer_tick();
         TIMER1_CLEAR = 1;
 
         write_sequnlock(&xtime_lock);
diff --git a/arch/arm/mach-at91rm9200/at91rm9200_time.c b/arch/arm/mach-at91rm9200/at91rm9200_time.c
index a92a8622c78a..07c9cea8961d 100644
--- a/arch/arm/mach-at91rm9200/at91rm9200_time.c
+++ b/arch/arm/mach-at91rm9200/at91rm9200_time.c
@@ -65,13 +65,13 @@ static unsigned long at91rm9200_gettimeoffset(void)
 /*
  * IRQ handler for the timer.
  */
-static irqreturn_t at91rm9200_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+static irqreturn_t at91rm9200_timer_interrupt(int irq, void *dev_id)
 {
         if (at91_sys_read(AT91_ST_SR) & AT91_ST_PITS) { /* This is a shared interrupt */
                 write_seqlock(&xtime_lock);
 
                 while (((read_CRTR() - last_crtr) & AT91_ST_ALMV) >= LATCH) {
-                        timer_tick(regs);
+                        timer_tick();
                         last_crtr = (last_crtr + LATCH) & AT91_ST_ALMV;
                 }
 
diff --git a/arch/arm/mach-at91rm9200/gpio.c b/arch/arm/mach-at91rm9200/gpio.c
index 58c9bf5e9520..7467d644f0a3 100644
--- a/arch/arm/mach-at91rm9200/gpio.c
+++ b/arch/arm/mach-at91rm9200/gpio.c
@@ -332,7 +332,7 @@ static struct irq_chip gpio_irqchip = {
         .set_wake       = gpio_irq_set_wake,
 };
 
-static void gpio_irq_handler(unsigned irq, struct irqdesc *desc, struct pt_regs *regs)
+static void gpio_irq_handler(unsigned irq, struct irqdesc *desc)
 {
         unsigned        pin;
         struct irqdesc  *gpio;
@@ -363,7 +363,7 @@ static void gpio_irq_handler(unsigned irq, struct irqdesc *desc, struct pt_regs
                                         gpio_irq_mask(pin);
                                 }
                                 else
-                                        desc_handle_irq(pin, gpio, regs);
+                                        desc_handle_irq(pin, gpio);
                         }
                         pin++;
                         gpio++;
diff --git a/arch/arm/mach-clps711x/time.c b/arch/arm/mach-clps711x/time.c
index a071eac4a30a..428493dd4687 100644
--- a/arch/arm/mach-clps711x/time.c
+++ b/arch/arm/mach-clps711x/time.c
@@ -48,10 +48,10 @@ static unsigned long clps711x_gettimeoffset(void)
  * IRQ handler for the timer
  */
 static irqreturn_t
-p720t_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+p720t_timer_interrupt(int irq, void *dev_id)
 {
         write_seqlock(&xtime_lock);
-        timer_tick(regs);
+        timer_tick();
         write_sequnlock(&xtime_lock);
         return IRQ_HANDLED;
 }
diff --git a/arch/arm/mach-clps7500/core.c b/arch/arm/mach-clps7500/core.c
index 92eaebdd5606..fb10cf252588 100644
--- a/arch/arm/mach-clps7500/core.c
+++ b/arch/arm/mach-clps7500/core.c
@@ -292,11 +292,11 @@ extern void ioctime_init(void);
 extern unsigned long ioc_timer_gettimeoffset(void);
 
 static irqreturn_t
-clps7500_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+clps7500_timer_interrupt(int irq, void *dev_id)
 {
         write_seqlock(&xtime_lock);
 
-        timer_tick(regs);
+        timer_tick();
 
         /* Why not using do_leds interface?? */
         {
diff --git a/arch/arm/mach-ebsa110/core.c b/arch/arm/mach-ebsa110/core.c
index 70dd12ef3c40..90103ab373a6 100644
--- a/arch/arm/mach-ebsa110/core.c
+++ b/arch/arm/mach-ebsa110/core.c
@@ -174,7 +174,7 @@ static unsigned long ebsa110_gettimeoffset(void)
 }
 
 static irqreturn_t
-ebsa110_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+ebsa110_timer_interrupt(int irq, void *dev_id)
 {
         u32 count;
 
@@ -190,7 +190,7 @@ ebsa110_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
         __raw_writeb(count & 0xff, PIT_T1);
         __raw_writeb(count >> 8, PIT_T1);
 
-        timer_tick(regs);
+        timer_tick();
 
         write_sequnlock(&xtime_lock);
 
diff --git a/arch/arm/mach-ep93xx/core.c b/arch/arm/mach-ep93xx/core.c
index a87a784b9201..e3fd1ab6adcc 100644
--- a/arch/arm/mach-ep93xx/core.c
+++ b/arch/arm/mach-ep93xx/core.c
@@ -97,7 +97,7 @@ static unsigned int last_jiffy_time;
 
 #define TIMER4_TICKS_PER_JIFFY          ((CLOCK_TICK_RATE + (HZ/2)) / HZ)
 
-static int ep93xx_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+static int ep93xx_timer_interrupt(int irq, void *dev_id)
 {
         write_seqlock(&xtime_lock);
 
@@ -106,7 +106,7 @@ static int ep93xx_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
                 (__raw_readl(EP93XX_TIMER4_VALUE_LOW) - last_jiffy_time)
                                                 >= TIMER4_TICKS_PER_JIFFY) {
                 last_jiffy_time += TIMER4_TICKS_PER_JIFFY;
-                timer_tick(regs);
+                timer_tick();
         }
 
         write_sequnlock(&xtime_lock);
@@ -245,7 +245,7 @@ EXPORT_SYMBOL(gpio_line_set);
  * EP93xx IRQ handling
  *************************************************************************/
 static void ep93xx_gpio_ab_irq_handler(unsigned int irq,
-                struct irqdesc *desc, struct pt_regs *regs)
+                struct irqdesc *desc)
 {
         unsigned char status;
         int i;
@@ -254,7 +254,7 @@ static void ep93xx_gpio_ab_irq_handler(unsigned int irq,
         for (i = 0; i < 8; i++) {
                 if (status & (1 << i)) {
                         desc = irq_desc + IRQ_EP93XX_GPIO(0) + i;
-                        desc_handle_irq(IRQ_EP93XX_GPIO(0) + i, desc, regs);
+                        desc_handle_irq(IRQ_EP93XX_GPIO(0) + i, desc);
                 }
         }
 
@@ -262,7 +262,7 @@ static void ep93xx_gpio_ab_irq_handler(unsigned int irq,
         for (i = 0; i < 8; i++) {
                 if (status & (1 << i)) {
                         desc = irq_desc + IRQ_EP93XX_GPIO(8) + i;
-                        desc_handle_irq(IRQ_EP93XX_GPIO(8) + i, desc, regs);
+                        desc_handle_irq(IRQ_EP93XX_GPIO(8) + i, desc);
                 }
         }
 }
diff --git a/arch/arm/mach-footbridge/dc21285-timer.c b/arch/arm/mach-footbridge/dc21285-timer.c
index 2af610811ca4..fa6be870c6c2 100644
--- a/arch/arm/mach-footbridge/dc21285-timer.c
+++ b/arch/arm/mach-footbridge/dc21285-timer.c
@@ -28,13 +28,13 @@ static unsigned long timer1_gettimeoffset (void)
 }
 
 static irqreturn_t
-timer1_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+timer1_interrupt(int irq, void *dev_id)
 {
         write_seqlock(&xtime_lock);
 
         *CSR_TIMER1_CLR = 0;
 
-        timer_tick(regs);
+        timer_tick();
 
         write_sequnlock(&xtime_lock);
 
diff --git a/arch/arm/mach-footbridge/dc21285.c b/arch/arm/mach-footbridge/dc21285.c
index a1ae49df5c3b..fa5d4976f514 100644
--- a/arch/arm/mach-footbridge/dc21285.c
+++ b/arch/arm/mach-footbridge/dc21285.c
@@ -154,7 +154,7 @@ static void dc21285_enable_error(unsigned long __data)
 /*
  * Warn on PCI errors.
  */
-static irqreturn_t dc21285_abort_irq(int irq, void *dev_id, struct pt_regs *regs)
+static irqreturn_t dc21285_abort_irq(int irq, void *dev_id)
 {
         unsigned int cmd;
         unsigned int status;
@@ -165,7 +165,7 @@ static irqreturn_t dc21285_abort_irq(int irq, void *dev_id, struct pt_regs *regs
 
         if (status & PCI_STATUS_REC_MASTER_ABORT) {
                 printk(KERN_DEBUG "PCI: master abort, pc=0x%08lx\n",
-                        instruction_pointer(regs));
+                        instruction_pointer(get_irq_regs()));
                 cmd |= PCI_STATUS_REC_MASTER_ABORT << 16;
         }
 
@@ -184,7 +184,7 @@ static irqreturn_t dc21285_abort_irq(int irq, void *dev_id, struct pt_regs *regs
         return IRQ_HANDLED;
 }
 
-static irqreturn_t dc21285_serr_irq(int irq, void *dev_id, struct pt_regs *regs)
+static irqreturn_t dc21285_serr_irq(int irq, void *dev_id)
 {
         struct timer_list *timer = dev_id;
         unsigned int cntl;
@@ -206,7 +206,7 @@ static irqreturn_t dc21285_serr_irq(int irq, void *dev_id, struct pt_regs *regs)
         return IRQ_HANDLED;
 }
 
-static irqreturn_t dc21285_discard_irq(int irq, void *dev_id, struct pt_regs *regs)
+static irqreturn_t dc21285_discard_irq(int irq, void *dev_id)
 {
         printk(KERN_DEBUG "PCI: discard timer expired\n");
         *CSR_SA110_CNTL &= 0xffffde07;
@@ -214,7 +214,7 @@ static irqreturn_t dc21285_discard_irq(int irq, void *dev_id, struct pt_regs *re
         return IRQ_HANDLED;
 }
 
-static irqreturn_t dc21285_dparity_irq(int irq, void *dev_id, struct pt_regs *regs)
+static irqreturn_t dc21285_dparity_irq(int irq, void *dev_id)
 {
         unsigned int cmd;
 
@@ -228,7 +228,7 @@ static irqreturn_t dc21285_dparity_irq(int irq, void *dev_id, struct pt_regs *re
         return IRQ_HANDLED;
 }
 
-static irqreturn_t dc21285_parity_irq(int irq, void *dev_id, struct pt_regs *regs)
+static irqreturn_t dc21285_parity_irq(int irq, void *dev_id)
 {
         struct timer_list *timer = dev_id;
         unsigned int cmd;
diff --git a/arch/arm/mach-footbridge/isa-irq.c b/arch/arm/mach-footbridge/isa-irq.c
index 87448c2d6baa..888dedd501b9 100644
--- a/arch/arm/mach-footbridge/isa-irq.c
+++ b/arch/arm/mach-footbridge/isa-irq.c
@@ -85,17 +85,17 @@ static struct irqchip isa_hi_chip = {
 };
 
 static void
-isa_irq_handler(unsigned int irq, struct irqdesc *desc, struct pt_regs *regs)
+isa_irq_handler(unsigned int irq, struct irqdesc *desc)
 {
         unsigned int isa_irq = *(unsigned char *)PCIIACK_BASE;
 
         if (isa_irq < _ISA_IRQ(0) || isa_irq >= _ISA_IRQ(16)) {
-                do_bad_IRQ(isa_irq, desc, regs);
+                do_bad_IRQ(isa_irq, desc);
                 return;
         }
 
         desc = irq_desc + isa_irq;
-        desc_handle_irq(isa_irq, desc, regs);
+        desc_handle_irq(isa_irq, desc);
 }
 
 static struct irqaction irq_cascade = {
diff --git a/arch/arm/mach-footbridge/isa-timer.c b/arch/arm/mach-footbridge/isa-timer.c
index c4810a40c8e1..d884a3954fb4 100644
--- a/arch/arm/mach-footbridge/isa-timer.c
+++ b/arch/arm/mach-footbridge/isa-timer.c
@@ -62,10 +62,10 @@ static unsigned long isa_gettimeoffset(void)
 }
 
 static irqreturn_t
-isa_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+isa_timer_interrupt(int irq, void *dev_id)
 {
         write_seqlock(&xtime_lock);
-        timer_tick(regs);
+        timer_tick();
         write_sequnlock(&xtime_lock);
         return IRQ_HANDLED;
 }
diff --git a/arch/arm/mach-h720x/common.c b/arch/arm/mach-h720x/common.c
index c096b4569308..4719229a1a78 100644
--- a/arch/arm/mach-h720x/common.c
+++ b/arch/arm/mach-h720x/common.c
@@ -101,14 +101,14 @@ static void inline unmask_gpio_irq(u32 irq)
 
 static void
 h720x_gpio_handler(unsigned int mask, unsigned int irq,
-                 struct irqdesc *desc, struct pt_regs *regs)
+                 struct irqdesc *desc)
 {
         IRQDBG("%s irq: %d\n",__FUNCTION__,irq);
         desc = irq_desc + irq;
         while (mask) {
                 if (mask & 1) {
                         IRQDBG("handling irq %d\n", irq);
-                        desc_handle_irq(irq, desc, regs);
+                        desc_handle_irq(irq, desc);
                 }
                 irq++;
                 desc++;
@@ -117,63 +117,58 @@ h720x_gpio_handler(unsigned int mask, unsigned int irq,
 }
 
 static void
-h720x_gpioa_demux_handler(unsigned int irq_unused, struct irqdesc *desc,
-                        struct pt_regs *regs)
+h720x_gpioa_demux_handler(unsigned int irq_unused, struct irqdesc *desc)
 {
         unsigned int mask, irq;
 
         mask = CPU_REG(GPIO_A_VIRT,GPIO_STAT);
         irq = IRQ_CHAINED_GPIOA(0);
         IRQDBG("%s mask: 0x%08x irq: %d\n",__FUNCTION__,mask,irq);
-        h720x_gpio_handler(mask, irq, desc, regs);
+        h720x_gpio_handler(mask, irq, desc);
 }
 
 static void
-h720x_gpiob_demux_handler(unsigned int irq_unused, struct irqdesc *desc,
-                        struct pt_regs *regs)
+h720x_gpiob_demux_handler(unsigned int irq_unused, struct irqdesc *desc)
 {
         unsigned int mask, irq;
         mask = CPU_REG(GPIO_B_VIRT,GPIO_STAT);
         irq = IRQ_CHAINED_GPIOB(0);
         IRQDBG("%s mask: 0x%08x irq: %d\n",__FUNCTION__,mask,irq);
-        h720x_gpio_handler(mask, irq, desc, regs);
+        h720x_gpio_handler(mask, irq, desc);
 }
 
 static void
-h720x_gpioc_demux_handler(unsigned int irq_unused, struct irqdesc *desc,
-                        struct pt_regs *regs)
+h720x_gpioc_demux_handler(unsigned int irq_unused, struct irqdesc *desc)
 {
         unsigned int mask, irq;
 
         mask = CPU_REG(GPIO_C_VIRT,GPIO_STAT);
         irq = IRQ_CHAINED_GPIOC(0);
         IRQDBG("%s mask: 0x%08x irq: %d\n",__FUNCTION__,mask,irq);
-        h720x_gpio_handler(mask, irq, desc, regs);
+        h720x_gpio_handler(mask, irq, desc);
 }
 
 static void
-h720x_gpiod_demux_handler(unsigned int irq_unused, struct irqdesc *desc,
-                        struct pt_regs *regs)
+h720x_gpiod_demux_handler(unsigned int irq_unused, struct irqdesc *desc)
 {
         unsigned int mask, irq;
 
         mask = CPU_REG(GPIO_D_VIRT,GPIO_STAT);
         irq = IRQ_CHAINED_GPIOD(0);
         IRQDBG("%s mask: 0x%08x irq: %d\n",__FUNCTION__,mask,irq);
-        h720x_gpio_handler(mask, irq, desc, regs);
+        h720x_gpio_handler(mask, irq, desc);
 }
 
 #ifdef CONFIG_CPU_H7202
 static void
-h720x_gpioe_demux_handler(unsigned int irq_unused, struct irqdesc *desc,
-                        struct pt_regs *regs)
+h720x_gpioe_demux_handler(unsigned int irq_unused, struct irqdesc *desc)
 {
         unsigned int mask, irq;
 
         mask = CPU_REG(GPIO_E_VIRT,GPIO_STAT);
         irq = IRQ_CHAINED_GPIOE(0);
         IRQDBG("%s mask: 0x%08x irq: %d\n",__FUNCTION__,mask,irq);
-        h720x_gpio_handler(mask, irq, desc, regs);
+        h720x_gpio_handler(mask, irq, desc);
 }
 #endif
 
diff --git a/arch/arm/mach-h720x/cpu-h7201.c b/arch/arm/mach-h720x/cpu-h7201.c
index a9a8255a3a03..13f76bdb3d9d 100644
--- a/arch/arm/mach-h720x/cpu-h7201.c
+++ b/arch/arm/mach-h720x/cpu-h7201.c
@@ -27,12 +27,12 @@
  * Timer interrupt handler
  */
 static irqreturn_t
-h7201_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+h7201_timer_interrupt(int irq, void *dev_id)
 {
         write_seqlock(&xtime_lock);
 
         CPU_REG (TIMER_VIRT, TIMER_TOPSTAT);
-        timer_tick(regs);
+        timer_tick();
 
         write_sequnlock(&xtime_lock);
 
diff --git a/arch/arm/mach-h720x/cpu-h7202.c b/arch/arm/mach-h720x/cpu-h7202.c
index da678d163fd9..06fecaefd8dc 100644
--- a/arch/arm/mach-h720x/cpu-h7202.c
+++ b/arch/arm/mach-h720x/cpu-h7202.c
@@ -106,8 +106,7 @@ static struct platform_device *devices[] __initdata = {
  * we have to handle all timer interrupts in one place.
  */
 static void
-h7202_timerx_demux_handler(unsigned int irq_unused, struct irqdesc *desc,
-                        struct pt_regs *regs)
+h7202_timerx_demux_handler(unsigned int irq_unused, struct irqdesc *desc)
 {
         unsigned int mask, irq;
 
@@ -115,7 +114,7 @@ h7202_timerx_demux_handler(unsigned int irq_unused, struct irqdesc *desc,
 
         if ( mask & TSTAT_T0INT ) {
                 write_seqlock(&xtime_lock);
-                timer_tick(regs);
+                timer_tick();
                 write_sequnlock(&xtime_lock);
                 if( mask == TSTAT_T0INT )
                         return;
@@ -126,7 +125,7 @@ h7202_timerx_demux_handler(unsigned int irq_unused, struct irqdesc *desc,
         desc = irq_desc + irq;
         while (mask) {
                 if (mask & 1)
-                        desc_handle_irq(irq, desc, regs);
+                        desc_handle_irq(irq, desc);
                 irq++;
                 desc++;
                 mask >>= 1;
@@ -137,9 +136,9 @@ h7202_timerx_demux_handler(unsigned int irq_unused, struct irqdesc *desc,
  * Timer interrupt handler
  */
 static irqreturn_t
-h7202_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+h7202_timer_interrupt(int irq, void *dev_id)
 {
-        h7202_timerx_demux_handler(0, NULL, regs);
+        h7202_timerx_demux_handler(0, NULL);
         return IRQ_HANDLED;
 }
 
diff --git a/arch/arm/mach-imx/dma.c b/arch/arm/mach-imx/dma.c
index 36578871ecc8..6d50d85a618c 100644
--- a/arch/arm/mach-imx/dma.c
+++ b/arch/arm/mach-imx/dma.c
@@ -279,8 +279,8 @@ imx_dma_setup_sg(imx_dmach_t dma_ch,
  */
 int
 imx_dma_setup_handlers(imx_dmach_t dma_ch,
-                       void (*irq_handler) (int, void *, struct pt_regs *),
-                       void (*err_handler) (int, void *, struct pt_regs *, int),
+                       void (*irq_handler) (int, void *),
+                       void (*err_handler) (int, void *, int),
                        void *data)
 {
         struct imx_dma_channel *imxdma = &imx_dma_channels[dma_ch];
@@ -461,7 +461,7 @@ imx_dma_request_by_prio(imx_dmach_t * pdma_ch, const char *name,
         return -ENODEV;
 }
 
-static irqreturn_t dma_err_handler(int irq, void *dev_id, struct pt_regs *regs)
+static irqreturn_t dma_err_handler(int irq, void *dev_id)
 {
         int i, disr = DISR;
         struct imx_dma_channel *channel;
@@ -500,7 +500,7 @@ static irqreturn_t dma_err_handler(int irq, void *dev_id, struct pt_regs *regs)
                 /*imx_dma_channels[i].sg = NULL;*/
 
                 if (channel->name && channel->err_handler) {
-                        channel->err_handler(i, channel->data, regs, errcode);
+                        channel->err_handler(i, channel->data, errcode);
                         continue;
                 }
 
@@ -517,7 +517,7 @@ static irqreturn_t dma_err_handler(int irq, void *dev_id, struct pt_regs *regs)
         return IRQ_HANDLED;
 }
 
-static irqreturn_t dma_irq_handler(int irq, void *dev_id, struct pt_regs *regs)
+static irqreturn_t dma_irq_handler(int irq, void *dev_id)
 {
         int i, disr = DISR;
 
@@ -536,7 +536,7 @@ static irqreturn_t dma_irq_handler(int irq, void *dev_id, struct pt_regs *regs)
                                 } else {
                                         if (channel->irq_handler)
                                                 channel->irq_handler(i,
-                                                        channel->data, regs);
+                                                        channel->data);
                                 }
                         } else {
                                 /*
diff --git a/arch/arm/mach-imx/irq.c b/arch/arm/mach-imx/irq.c
index 2688bd82c2a2..368b13b058ab 100644
--- a/arch/arm/mach-imx/irq.c
+++ b/arch/arm/mach-imx/irq.c
@@ -146,13 +146,13 @@ imx_gpio_unmask_irq(unsigned int irq)
 
 static void
 imx_gpio_handler(unsigned int mask, unsigned int irq,
-                 struct irqdesc *desc, struct pt_regs *regs)
+                 struct irqdesc *desc)
 {
         desc = irq_desc + irq;
         while (mask) {
                 if (mask & 1) {
                         DEBUG_IRQ("handling irq %d\n", irq);
-                        desc_handle_irq(irq, desc, regs);
+                        desc_handle_irq(irq, desc);
                 }
                 irq++;
                 desc++;
@@ -161,47 +161,43 @@ imx_gpio_handler(unsigned int mask, unsigned int irq,
 }
 
 static void
-imx_gpioa_demux_handler(unsigned int irq_unused, struct irqdesc *desc,
-                        struct pt_regs *regs)
+imx_gpioa_demux_handler(unsigned int irq_unused, struct irqdesc *desc)
 {
         unsigned int mask, irq;
 
         mask = ISR(0);
         irq = IRQ_GPIOA(0);
-        imx_gpio_handler(mask, irq, desc, regs);
+        imx_gpio_handler(mask, irq, desc);
 }
 
 static void
-imx_gpiob_demux_handler(unsigned int irq_unused, struct irqdesc *desc,
-                        struct pt_regs *regs)
+imx_gpiob_demux_handler(unsigned int irq_unused, struct irqdesc *desc)
 {
         unsigned int mask, irq;
 
         mask = ISR(1);
         irq = IRQ_GPIOB(0);
-        imx_gpio_handler(mask, irq, desc, regs);
+        imx_gpio_handler(mask, irq, desc);
 }
 
 static void
-imx_gpioc_demux_handler(unsigned int irq_unused, struct irqdesc *desc,
-                        struct pt_regs *regs)
+imx_gpioc_demux_handler(unsigned int irq_unused, struct irqdesc *desc)
 {
         unsigned int mask, irq;
 
         mask = ISR(2);
         irq = IRQ_GPIOC(0);
-        imx_gpio_handler(mask, irq, desc, regs);
+        imx_gpio_handler(mask, irq, desc);
 }
 
 static void
-imx_gpiod_demux_handler(unsigned int irq_unused, struct irqdesc *desc,
-                        struct pt_regs *regs)
+imx_gpiod_demux_handler(unsigned int irq_unused, struct irqdesc *desc)
 {
         unsigned int mask, irq;
 
         mask = ISR(3);
         irq = IRQ_GPIOD(0);
-        imx_gpio_handler(mask, irq, desc, regs);
+        imx_gpio_handler(mask, irq, desc);
 }
 
 static struct irq_chip imx_internal_chip = {
diff --git a/arch/arm/mach-imx/time.c b/arch/arm/mach-imx/time.c
index 6ed7523c65bb..8ae4a2c5066f 100644
--- a/arch/arm/mach-imx/time.c
+++ b/arch/arm/mach-imx/time.c
@@ -56,7 +56,7 @@ static unsigned long imx_gettimeoffset(void)
  * IRQ handler for the timer
  */
 static irqreturn_t
-imx_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+imx_timer_interrupt(int irq, void *dev_id)
 {
         write_seqlock(&xtime_lock);
 
@@ -64,7 +64,7 @@ imx_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
         if (IMX_TSTAT(TIMER_BASE))
                 IMX_TSTAT(TIMER_BASE) = 0;
 
-        timer_tick(regs);
+        timer_tick();
         write_sequnlock(&xtime_lock);
 
         return IRQ_HANDLED;
diff --git a/arch/arm/mach-integrator/core.c b/arch/arm/mach-integrator/core.c
index 42021fdfa0c6..8d880cb9ba39 100644
--- a/arch/arm/mach-integrator/core.c
+++ b/arch/arm/mach-integrator/core.c
@@ -248,7 +248,7 @@ unsigned long integrator_gettimeoffset(void)
  * IRQ handler for the timer
  */
 static irqreturn_t
-integrator_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+integrator_timer_interrupt(int irq, void *dev_id)
 {
         write_seqlock(&xtime_lock);
 
@@ -262,7 +262,7 @@ integrator_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
          * primary CPU
          */
         if (hard_smp_processor_id() == 0) {
-                timer_tick(regs);
+                timer_tick();
 #ifdef CONFIG_SMP
                 smp_send_timer();
 #endif
@@ -272,7 +272,7 @@ integrator_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
         /*
          * this is the ARM equivalent of the APIC timer interrupt
          */
-        update_process_times(user_mode(regs));
+        update_process_times(user_mode(get_irq_regs()));
 #endif /* CONFIG_SMP */
 
         write_sequnlock(&xtime_lock);
diff --git a/arch/arm/mach-integrator/integrator_cp.c b/arch/arm/mach-integrator/integrator_cp.c
index 678b6ba2b463..771b65bffe69 100644
--- a/arch/arm/mach-integrator/integrator_cp.c
+++ b/arch/arm/mach-integrator/integrator_cp.c
@@ -202,12 +202,12 @@ static struct irq_chip sic_chip = {
 };
 
 static void
-sic_handle_irq(unsigned int irq, struct irqdesc *desc, struct pt_regs *regs)
+sic_handle_irq(unsigned int irq, struct irqdesc *desc)
 {
         unsigned long status = sic_readl(INTCP_VA_SIC_BASE + IRQ_STATUS);
 
         if (status == 0) {
-                do_bad_IRQ(irq, desc, regs);
+                do_bad_IRQ(irq, desc);
                 return;
         }
 
@@ -218,7 +218,7 @@ sic_handle_irq(unsigned int irq, struct irqdesc *desc, struct pt_regs *regs)
                 irq += IRQ_SIC_START;
 
                 desc = irq_desc + irq;
-                desc_handle_irq(irq, desc, regs);
+                desc_handle_irq(irq, desc);
         } while (status);
 }
 
diff --git a/arch/arm/mach-integrator/pci_v3.c b/arch/arm/mach-integrator/pci_v3.c
index 4418f6d7572d..fb8c6d97b22b 100644
--- a/arch/arm/mach-integrator/pci_v3.c
+++ b/arch/arm/mach-integrator/pci_v3.c
@@ -440,9 +440,10 @@ v3_pci_fault(unsigned long addr, unsigned int fsr, struct pt_regs *regs)
         return 1;
 }
 
-static irqreturn_t v3_irq(int irq, void *devid, struct pt_regs *regs)
+static irqreturn_t v3_irq(int irq, void *devid)
 {
 #ifdef CONFIG_DEBUG_LL
+        struct pt_regs *regs = get_irq_regs();
         unsigned long pc = instruction_pointer(regs);
         unsigned long instr = *(unsigned long *)pc;
         char buf[128];
diff --git a/arch/arm/mach-integrator/time.c b/arch/arm/mach-integrator/time.c
index ee49cf790dab..5278f589fcee 100644
--- a/arch/arm/mach-integrator/time.c
+++ b/arch/arm/mach-integrator/time.c
@@ -96,8 +96,7 @@ static struct rtc_ops rtc_ops = {
         .set_alarm      = integrator_rtc_set_alarm,
 };
 
-static irqreturn_t arm_rtc_interrupt(int irq, void *dev_id,
-                                     struct pt_regs *regs)
+static irqreturn_t arm_rtc_interrupt(int irq, void *dev_id)
 {
         writel(0, rtc_base + RTC_EOI);
         return IRQ_HANDLED;
diff --git a/arch/arm/mach-ixp2000/core.c b/arch/arm/mach-ixp2000/core.c
index 7f91f689a041..22c98e9dad28 100644
--- a/arch/arm/mach-ixp2000/core.c
+++ b/arch/arm/mach-ixp2000/core.c
@@ -204,7 +204,7 @@ unsigned long ixp2000_gettimeoffset (void)
         return offset / ticks_per_usec;
 }
 
-static int ixp2000_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+static int ixp2000_timer_interrupt(int irq, void *dev_id)
 {
         write_seqlock(&xtime_lock);
 
@@ -213,7 +213,7 @@ static int ixp2000_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
 
         while ((signed long)(next_jiffy_time - *missing_jiffy_timer_csr)
                                                         >= ticks_per_jiffy) {
-                timer_tick(regs);
+                timer_tick();
                 next_jiffy_time -= ticks_per_jiffy;
         }
 
@@ -308,7 +308,7 @@ EXPORT_SYMBOL(gpio_line_config);
 /*************************************************************************
  * IRQ handling IXP2000
  *************************************************************************/
-static void ixp2000_GPIO_irq_handler(unsigned int irq, struct irqdesc *desc, struct pt_regs *regs)
+static void ixp2000_GPIO_irq_handler(unsigned int irq, struct irqdesc *desc)
 {                               
         int i;
         unsigned long status = *IXP2000_GPIO_INST;
@@ -316,7 +316,7 @@ static void ixp2000_GPIO_irq_handler(unsigned int irq, struct irqdesc *desc, str
         for (i = 0; i <= 7; i++) {
                 if (status & (1<<i)) {
                         desc = irq_desc + i + IRQ_IXP2000_GPIO0;
-                        desc_handle_irq(i + IRQ_IXP2000_GPIO0, desc, regs);
+                        desc_handle_irq(i + IRQ_IXP2000_GPIO0, desc);
                 }
         }
 }
@@ -401,7 +401,7 @@ static void ixp2000_pci_irq_unmask(unsigned int irq)
 /*
  * Error interrupts. These are used extensively by the microengine drivers
  */
-static void ixp2000_err_irq_handler(unsigned int irq, struct irqdesc *desc,  struct pt_regs *regs)
+static void ixp2000_err_irq_handler(unsigned int irq, struct irqdesc *desc)
 {
         int i;
         unsigned long status = *IXP2000_IRQ_ERR_STATUS;
@@ -409,7 +409,7 @@ static void ixp2000_err_irq_handler(unsigned int irq, struct irqdesc *desc,  str
         for(i = 31; i >= 0; i--) {
                 if(status & (1 << i)) {
                         desc = irq_desc + IRQ_IXP2000_DRAM0_MIN_ERR + i;
-                        desc_handle_irq(IRQ_IXP2000_DRAM0_MIN_ERR + i, desc, regs);
+                        desc_handle_irq(IRQ_IXP2000_DRAM0_MIN_ERR + i, desc);
                 }
         }
 }
diff --git a/arch/arm/mach-ixp2000/ixdp2x00.c b/arch/arm/mach-ixp2000/ixdp2x00.c
index 40eef8b36740..af48cb52dfc4 100644
--- a/arch/arm/mach-ixp2000/ixdp2x00.c
+++ b/arch/arm/mach-ixp2000/ixdp2x00.c
@@ -106,7 +106,7 @@ static void ixdp2x00_irq_unmask(unsigned int irq)
                 ixp2000_release_slowport(&old_cfg);
 }
 
-static void ixdp2x00_irq_handler(unsigned int irq, struct irqdesc *desc, struct pt_regs *regs)
+static void ixdp2x00_irq_handler(unsigned int irq, struct irqdesc *desc)
 {
         volatile u32 ex_interrupt = 0;
         static struct slowport_cfg old_cfg;
@@ -132,7 +132,7 @@ static void ixdp2x00_irq_handler(unsigned int irq, struct irqdesc *desc, struct
                         struct irqdesc *cpld_desc;
                         int cpld_irq = IXP2000_BOARD_IRQ(0) + i;
                         cpld_desc = irq_desc + cpld_irq;
-                        desc_handle_irq(cpld_irq, cpld_desc, regs);
+                        desc_handle_irq(cpld_irq, cpld_desc);
                 }
         }
 
diff --git a/arch/arm/mach-ixp2000/ixdp2x01.c b/arch/arm/mach-ixp2000/ixdp2x01.c
index 7f42366f60d1..9ccae9e63f70 100644
--- a/arch/arm/mach-ixp2000/ixdp2x01.c
+++ b/arch/arm/mach-ixp2000/ixdp2x01.c
@@ -63,7 +63,7 @@ static void ixdp2x01_irq_unmask(unsigned int irq)
 
 static u32 valid_irq_mask;
 
-static void ixdp2x01_irq_handler(unsigned int irq, struct irqdesc *desc, struct pt_regs *regs)
+static void ixdp2x01_irq_handler(unsigned int irq, struct irqdesc *desc)
 {
         u32 ex_interrupt;
         int i;
@@ -82,7 +82,7 @@ static void ixdp2x01_irq_handler(unsigned int irq, struct irqdesc *desc, struct
                         struct irqdesc *cpld_desc;
                         int cpld_irq = IXP2000_BOARD_IRQ(0) + i;
                         cpld_desc = irq_desc + cpld_irq;
-                        desc_handle_irq(cpld_irq, cpld_desc, regs);
+                        desc_handle_irq(cpld_irq, cpld_desc);
                 }
         }
 
diff --git a/arch/arm/mach-ixp23xx/core.c b/arch/arm/mach-ixp23xx/core.c
index 566a07821c77..a704a1820048 100644
--- a/arch/arm/mach-ixp23xx/core.c
+++ b/arch/arm/mach-ixp23xx/core.c
@@ -251,7 +251,7 @@ static void ixp23xx_pci_irq_unmask(unsigned int irq)
 /*
  * TODO: Should this just be done at ASM level?
  */
-static void pci_handler(unsigned int irq, struct irqdesc *desc, struct pt_regs *regs)
+static void pci_handler(unsigned int irq, struct irqdesc *desc)
 {
         u32 pci_interrupt;
         unsigned int irqno;
@@ -271,7 +271,7 @@ static void pci_handler(unsigned int irq, struct irqdesc *desc, struct pt_regs *
         }
 
         int_desc = irq_desc + irqno;
-        desc_handle_irq(irqno, int_desc, regs);
+        desc_handle_irq(irqno, int_desc);
 
         desc->chip->unmask(irq);
 }
@@ -348,12 +348,12 @@ ixp23xx_gettimeoffset(void)
 }
 
 static irqreturn_t
-ixp23xx_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+ixp23xx_timer_interrupt(int irq, void *dev_id)
 {
         /* Clear Pending Interrupt by writing '1' to it */
         *IXP23XX_TIMER_STATUS = IXP23XX_TIMER1_INT_PEND;
         while ((signed long)(*IXP23XX_TIMER_CONT - next_jiffy_time) >= LATCH) {
-                timer_tick(regs);
+                timer_tick();
                 next_jiffy_time += LATCH;
         }
 
diff --git a/arch/arm/mach-ixp23xx/ixdp2351.c b/arch/arm/mach-ixp23xx/ixdp2351.c
index 37a32e6bcca2..b6ab0e8bb5e8 100644
--- a/arch/arm/mach-ixp23xx/ixdp2351.c
+++ b/arch/arm/mach-ixp23xx/ixdp2351.c
@@ -60,7 +60,7 @@ static void ixdp2351_inta_unmask(unsigned int irq)
         *IXDP2351_CPLD_INTA_MASK_CLR_REG = IXDP2351_INTA_IRQ_MASK(irq);
 }
 
-static void ixdp2351_inta_handler(unsigned int irq, struct irqdesc *desc, struct pt_regs *regs)
+static void ixdp2351_inta_handler(unsigned int irq, struct irqdesc *desc)
 {
         u16 ex_interrupt =
                 *IXDP2351_CPLD_INTA_STAT_REG & IXDP2351_INTA_IRQ_VALID;
@@ -74,7 +74,7 @@ static void ixdp2351_inta_handler(unsigned int irq, struct irqdesc *desc, struct
                         int cpld_irq =
                                 IXP23XX_MACH_IRQ(IXDP2351_INTA_IRQ_BASE + i);
                         cpld_desc = irq_desc + cpld_irq;
-                        desc_handle_irq(cpld_irq, cpld_desc, regs);
+                        desc_handle_irq(cpld_irq, cpld_desc);
                 }
         }
 
@@ -97,7 +97,7 @@ static void ixdp2351_intb_unmask(unsigned int irq)
         *IXDP2351_CPLD_INTB_MASK_CLR_REG = IXDP2351_INTB_IRQ_MASK(irq);
 }
 
-static void ixdp2351_intb_handler(unsigned int irq, struct irqdesc *desc, struct pt_regs *regs)
+static void ixdp2351_intb_handler(unsigned int irq, struct irqdesc *desc)
 {
         u16 ex_interrupt =
                 *IXDP2351_CPLD_INTB_STAT_REG & IXDP2351_INTB_IRQ_VALID;
@@ -111,7 +111,7 @@ static void ixdp2351_intb_handler(unsigned int irq, struct irqdesc *desc, struct
                         int cpld_irq =
                                 IXP23XX_MACH_IRQ(IXDP2351_INTB_IRQ_BASE + i);
                         cpld_desc = irq_desc + cpld_irq;
-                        desc_handle_irq(cpld_irq, cpld_desc, regs);
+                        desc_handle_irq(cpld_irq, cpld_desc);
                 }
         }
 
diff --git a/arch/arm/mach-ixp4xx/common.c b/arch/arm/mach-ixp4xx/common.c
index 35dd8b3824b0..c7513f6eb50c 100644
--- a/arch/arm/mach-ixp4xx/common.c
+++ b/arch/arm/mach-ixp4xx/common.c
@@ -256,7 +256,7 @@ static unsigned volatile last_jiffy_time;
 
 #define CLOCK_TICKS_PER_USEC    ((CLOCK_TICK_RATE + USEC_PER_SEC/2) / USEC_PER_SEC)
 
-static irqreturn_t ixp4xx_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+static irqreturn_t ixp4xx_timer_interrupt(int irq, void *dev_id)
 {
         write_seqlock(&xtime_lock);
 
@@ -267,7 +267,7 @@ static irqreturn_t ixp4xx_timer_interrupt(int irq, void *dev_id, struct pt_regs
          * Catch up with the real idea of time
          */
         while ((signed long)(*IXP4XX_OSTS - last_jiffy_time) >= LATCH) {
-                timer_tick(regs);
+                timer_tick();
                 last_jiffy_time += LATCH;
         }
 
diff --git a/arch/arm/mach-ixp4xx/nas100d-power.c b/arch/arm/mach-ixp4xx/nas100d-power.c
index 81ffcae1f56e..29aa98d3a7fa 100644
--- a/arch/arm/mach-ixp4xx/nas100d-power.c
+++ b/arch/arm/mach-ixp4xx/nas100d-power.c
@@ -24,7 +24,7 @@
 
 #include <asm/mach-types.h>
 
-static irqreturn_t nas100d_reset_handler(int irq, void *dev_id, struct pt_regs *regs)
+static irqreturn_t nas100d_reset_handler(int irq, void *dev_id)
 {
         /* Signal init to do the ctrlaltdel action, this will bypass init if
          * it hasn't started and do a kernel_restart.
diff --git a/arch/arm/mach-ixp4xx/nslu2-power.c b/arch/arm/mach-ixp4xx/nslu2-power.c
index a29b3b2b61b6..acd71e9c38a7 100644
--- a/arch/arm/mach-ixp4xx/nslu2-power.c
+++ b/arch/arm/mach-ixp4xx/nslu2-power.c
@@ -25,7 +25,7 @@
 
 #include <asm/mach-types.h>
 
-static irqreturn_t nslu2_power_handler(int irq, void *dev_id, struct pt_regs *regs)
+static irqreturn_t nslu2_power_handler(int irq, void *dev_id)
 {
         /* Signal init to do the ctrlaltdel action, this will bypass init if
          * it hasn't started and do a kernel_restart.
@@ -35,7 +35,7 @@ static irqreturn_t nslu2_power_handler(int irq, void *dev_id, struct pt_regs *re
         return IRQ_HANDLED;
 }
 
-static irqreturn_t nslu2_reset_handler(int irq, void *dev_id, struct pt_regs *regs)
+static irqreturn_t nslu2_reset_handler(int irq, void *dev_id)
 {
         /* This is the paper-clip reset, it shuts the machine down directly.
          */
diff --git a/arch/arm/mach-lh7a40x/arch-kev7a400.c b/arch/arm/mach-lh7a40x/arch-kev7a400.c
index 4f2ab48800a5..15fbcc911fe7 100644
--- a/arch/arm/mach-lh7a40x/arch-kev7a400.c
+++ b/arch/arm/mach-lh7a40x/arch-kev7a400.c
@@ -71,14 +71,13 @@ static struct irq_chip kev7a400_cpld_chip = {
 };
 
 
-static void kev7a400_cpld_handler (unsigned int irq, struct irqdesc *desc,
-                                  struct pt_regs *regs)
+static void kev7a400_cpld_handler (unsigned int irq, struct irqdesc *desc)
 {
         u32 mask = CPLD_LATCHED_INTS;
         irq = IRQ_KEV7A400_CPLD;
         for (; mask; mask >>= 1, ++irq) {
                 if (mask & 1)
-                        desc[irq].handle (irq, desc, regs);
+                        desc[irq].handle (irq, desc);
         }
 }
 
diff --git a/arch/arm/mach-lh7a40x/arch-lpd7a40x.c b/arch/arm/mach-lh7a40x/arch-lpd7a40x.c
index a21b12f06c6b..8441e0a156cb 100644
--- a/arch/arm/mach-lh7a40x/arch-lpd7a40x.c
+++ b/arch/arm/mach-lh7a40x/arch-lpd7a40x.c
@@ -207,8 +207,7 @@ static struct irq_chip lpd7a40x_cpld_chip = {
         .unmask = lh7a40x_unmask_cpld_irq,
 };
 
-static void lpd7a40x_cpld_handler (unsigned int irq, struct irqdesc *desc,
-                                  struct pt_regs *regs)
+static void lpd7a40x_cpld_handler (unsigned int irq, struct irqdesc *desc)
 {
         unsigned int mask = CPLD_INTERRUPTS;
 
diff --git a/arch/arm/mach-lh7a40x/irq-kev7a400.c b/arch/arm/mach-lh7a40x/irq-kev7a400.c
index f9b3fe9174a5..646071334b8f 100644
--- a/arch/arm/mach-lh7a40x/irq-kev7a400.c
+++ b/arch/arm/mach-lh7a40x/irq-kev7a400.c
@@ -51,14 +51,13 @@ irq_chip lh7a400_cpld_chip = {
 };
 
 static void
-lh7a400_cpld_handler (unsigned int irq, struct irqdesc *desc,
-                      struct pt_regs *regs)
+lh7a400_cpld_handler (unsigned int irq, struct irqdesc *desc)
 {
         u32 mask = CPLD_LATCHED_INTS;
         irq = IRQ_KEV_7A400_CPLD;
         for (; mask; mask >>= 1, ++irq) {
                 if (mask & 1)
-                        desc[irq].handle (irq, desc, regs);
+                        desc[irq].handle (irq, desc);
         }
 }
 
diff --git a/arch/arm/mach-lh7a40x/irq-lpd7a40x.c b/arch/arm/mach-lh7a40x/irq-lpd7a40x.c
index d6055dde6468..b20376804bbb 100644
--- a/arch/arm/mach-lh7a40x/irq-lpd7a40x.c
+++ b/arch/arm/mach-lh7a40x/irq-lpd7a40x.c
@@ -57,8 +57,7 @@ static struct irq_chip lh7a40x_cpld_chip = {
         .unmask = lh7a40x_unmask_cpld_irq,
 };
 
-static void lh7a40x_cpld_handler (unsigned int irq, struct irqdesc *desc,
-                                  struct pt_regs *regs)
+static void lh7a40x_cpld_handler (unsigned int irq, struct irqdesc *desc)
 {
         unsigned int mask = CPLD_INTERRUPTS;
 
diff --git a/arch/arm/mach-lh7a40x/time.c b/arch/arm/mach-lh7a40x/time.c
index ad5652e01507..bef3c4b68d3b 100644
--- a/arch/arm/mach-lh7a40x/time.c
+++ b/arch/arm/mach-lh7a40x/time.c
@@ -39,12 +39,12 @@
 #endif
 
 static irqreturn_t
-lh7a40x_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+lh7a40x_timer_interrupt(int irq, void *dev_id)
 {
         write_seqlock(&xtime_lock);
 
         TIMER_EOI = 0;
-        timer_tick(regs);
+        timer_tick();
 
         write_sequnlock(&xtime_lock);
 
diff --git a/arch/arm/mach-netx/generic.c b/arch/arm/mach-netx/generic.c
index af0b13534cfd..edbbbdc3b06b 100644
--- a/arch/arm/mach-netx/generic.c
+++ b/arch/arm/mach-netx/generic.c
@@ -69,8 +69,7 @@ static struct platform_device *devices[] __initdata = {
 #endif
 
 static void
-netx_hif_demux_handler(unsigned int irq_unused, struct irqdesc *desc,
-                        struct pt_regs *regs)
+netx_hif_demux_handler(unsigned int irq_unused, struct irqdesc *desc)
 {
         unsigned int irq = NETX_IRQ_HIF_CHAINED(0);
         unsigned int stat;
@@ -83,7 +82,7 @@ netx_hif_demux_handler(unsigned int irq_unused, struct irqdesc *desc,
         while (stat) {
                 if (stat & 1) {
                         DEBUG_IRQ("handling irq %d\n", irq);
-                        desc_handle_irq(irq, desc, regs);
+                        desc_handle_irq(irq, desc);
                 }
                 irq++;
                 desc++;
diff --git a/arch/arm/mach-netx/time.c b/arch/arm/mach-netx/time.c
index 6d72c81b7d9f..0993336c0b55 100644
--- a/arch/arm/mach-netx/time.c
+++ b/arch/arm/mach-netx/time.c
@@ -38,11 +38,11 @@ static unsigned long netx_gettimeoffset(void)
  * IRQ handler for the timer
  */
 static irqreturn_t
-netx_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+netx_timer_interrupt(int irq, void *dev_id)
 {
         write_seqlock(&xtime_lock);
 
-        timer_tick(regs);
+        timer_tick();
         write_sequnlock(&xtime_lock);
 
         /* acknowledge interrupt */
diff --git a/arch/arm/mach-omap1/board-osk.c b/arch/arm/mach-omap1/board-osk.c
index 6b05647a6c01..3a622801d7b0 100644
--- a/arch/arm/mach-omap1/board-osk.c
+++ b/arch/arm/mach-omap1/board-osk.c
@@ -327,7 +327,7 @@ static struct spi_board_info __initdata mistral_boardinfo[] = { {
 
 #ifdef  CONFIG_PM
 static irqreturn_t
-osk_mistral_wake_interrupt(int irq, void *ignored, struct pt_regs *regs)
+osk_mistral_wake_interrupt(int irq, void *ignored)
 {
         return IRQ_HANDLED;
 }
diff --git a/arch/arm/mach-omap1/fpga.c b/arch/arm/mach-omap1/fpga.c
index efe9bfc6e55f..8e40208b10bb 100644
--- a/arch/arm/mach-omap1/fpga.c
+++ b/arch/arm/mach-omap1/fpga.c
@@ -84,8 +84,7 @@ static void fpga_mask_ack_irq(unsigned int irq)
         fpga_ack_irq(irq);
 }
 
-void innovator_fpga_IRQ_demux(unsigned int irq, struct irqdesc *desc,
-                              struct pt_regs *regs)
+void innovator_fpga_IRQ_demux(unsigned int irq, struct irqdesc *desc)
 {
         struct irqdesc *d;
         u32 stat;
@@ -101,7 +100,7 @@ void innovator_fpga_IRQ_demux(unsigned int irq, struct irqdesc *desc,
              fpga_irq++, stat >>= 1) {
                 if (stat & 1) {
                         d = irq_desc + fpga_irq;
-                        desc_handle_irq(fpga_irq, d, regs);
+                        desc_handle_irq(fpga_irq, d);
                 }
         }
 }
diff --git a/arch/arm/mach-omap1/pm.c b/arch/arm/mach-omap1/pm.c
index cd76185bab74..4834758d340c 100644
--- a/arch/arm/mach-omap1/pm.c
+++ b/arch/arm/mach-omap1/pm.c
@@ -682,8 +682,7 @@ static int omap_pm_finish(suspend_state_t state)
 }
 
 
-static irqreturn_t  omap_wakeup_interrupt(int  irq, void *  dev,
-                                     struct pt_regs *  regs)
+static irqreturn_t  omap_wakeup_interrupt(int irq, void *dev)
 {
         return IRQ_HANDLED;
 }
diff --git a/arch/arm/mach-omap1/serial.c b/arch/arm/mach-omap1/serial.c
index c4b790217a5b..4cc98a578e4b 100644
--- a/arch/arm/mach-omap1/serial.c
+++ b/arch/arm/mach-omap1/serial.c
@@ -204,8 +204,7 @@ void __init omap_serial_init(void)
 
 #ifdef CONFIG_OMAP_SERIAL_WAKE
 
-static irqreturn_t omap_serial_wake_interrupt(int irq, void *dev_id,
-                                              struct pt_regs *regs)
+static irqreturn_t omap_serial_wake_interrupt(int irq, void *dev_id)
 {
         /* Need to do something with serial port right after wake-up? */
         return IRQ_HANDLED;
diff --git a/arch/arm/mach-omap1/time.c b/arch/arm/mach-omap1/time.c
index 4d91b9f51084..1b7e4a506c26 100644
--- a/arch/arm/mach-omap1/time.c
+++ b/arch/arm/mach-omap1/time.c
@@ -160,8 +160,7 @@ static unsigned long omap_mpu_timer_gettimeoffset(void)
  * Latency during the interrupt is calculated using timer1.
  * Both timer0 and timer1 are counting at 6MHz (P2 6.5MHz).
  */
-static irqreturn_t omap_mpu_timer_interrupt(int irq, void *dev_id,
-                                        struct pt_regs *regs)
+static irqreturn_t omap_mpu_timer_interrupt(int irq, void *dev_id)
 {
         unsigned long now, latency;
 
@@ -169,7 +168,7 @@ static irqreturn_t omap_mpu_timer_interrupt(int irq, void *dev_id,
         now = 0 - omap_mpu_timer_read(0);
         latency = MPU_TICKS_PER_SEC / HZ - omap_mpu_timer_read(1);
         omap_mpu_timer_last = now - latency;
-        timer_tick(regs);
+        timer_tick();
         write_sequnlock(&xtime_lock);
 
         return IRQ_HANDLED;
@@ -182,8 +181,7 @@ static struct irqaction omap_mpu_timer_irq = {
 };
 
 static unsigned long omap_mpu_timer1_overflows;
-static irqreturn_t omap_mpu_timer1_interrupt(int irq, void *dev_id,
-                                             struct pt_regs *regs)
+static irqreturn_t omap_mpu_timer1_interrupt(int irq, void *dev_id)
 {
         omap_mpu_timer1_overflows++;
         return IRQ_HANDLED;
diff --git a/arch/arm/mach-omap2/board-apollon.c b/arch/arm/mach-omap2/board-apollon.c
index c37b0e6d1248..03d6905ba490 100644
--- a/arch/arm/mach-omap2/board-apollon.c
+++ b/arch/arm/mach-omap2/board-apollon.c
@@ -203,7 +203,7 @@ static void __init apollon_led_init(void)
         omap_set_gpio_dataout(LED2_GPIO15, 0);
 }
 
-static irqreturn_t apollon_sw_interrupt(int irq, void *ignored, struct pt_regs *regs)
+static irqreturn_t apollon_sw_interrupt(int irq, void *ignored)
 {
         static unsigned int led0, led1, led2;
 
diff --git a/arch/arm/mach-omap2/timer-gp.c b/arch/arm/mach-omap2/timer-gp.c
index fe5fd6d42dea..973189cd9766 100644
--- a/arch/arm/mach-omap2/timer-gp.c
+++ b/arch/arm/mach-omap2/timer-gp.c
@@ -37,13 +37,12 @@ static inline void omap2_gp_timer_start(unsigned long load_val)
         omap_dm_timer_start(gptimer);
 }
 
-static irqreturn_t omap2_gp_timer_interrupt(int irq, void *dev_id,
-                                            struct pt_regs *regs)
+static irqreturn_t omap2_gp_timer_interrupt(int irq, void *dev_id)
 {
         write_seqlock(&xtime_lock);
 
         omap_dm_timer_write_status(gptimer, OMAP_TIMER_INT_OVERFLOW);
-        timer_tick(regs);
+        timer_tick();
 
         write_sequnlock(&xtime_lock);
 
diff --git a/arch/arm/mach-pnx4008/dma.c b/arch/arm/mach-pnx4008/dma.c
index ec01574f88ac..d6a279e4b524 100644
--- a/arch/arm/mach-pnx4008/dma.c
+++ b/arch/arm/mach-pnx4008/dma.c
@@ -32,7 +32,7 @@
 
 static struct dma_channel {
         char *name;
-        void (*irq_handler) (int, int, void *, struct pt_regs *);
+        void (*irq_handler) (int, int, void *);
         void *data;
         struct pnx4008_dma_ll *ll;
         u32 ll_dma;
@@ -150,8 +150,7 @@ static inline void pnx4008_dma_unlock(void)
 #define VALID_CHANNEL(c)        (((c) >= 0) && ((c) < MAX_DMA_CHANNELS))
 
 int pnx4008_request_channel(char *name, int ch,
-                            void (*irq_handler) (int, int, void *,
-                                                 struct pt_regs *), void *data)
+                            void (*irq_handler) (int, int, void *), void *data)
 {
         int i, found = 0;
 
@@ -1033,7 +1032,7 @@ int pnx4008_dma_ch_enabled(int ch)
 
 EXPORT_SYMBOL_GPL(pnx4008_dma_ch_enabled);
 
-static irqreturn_t dma_irq_handler(int irq, void *dev_id, struct pt_regs *regs)
+static irqreturn_t dma_irq_handler(int irq, void *dev_id)
 {
         int i;
         unsigned long dint = __raw_readl(DMAC_INT_STAT);
@@ -1053,8 +1052,7 @@ static irqreturn_t dma_irq_handler(int irq, void *dev_id, struct pt_regs *regs)
                                         cause |= DMA_ERR_INT;
                                 if (tcint & i_bit)
                                         cause |= DMA_TC_INT;
-                                channel->irq_handler(i, cause, channel->data,
-                                                     regs);
+                                channel->irq_handler(i, cause, channel->data);
                         } else {
                                 /*
                                  * IRQ for an unregistered DMA channel
diff --git a/arch/arm/mach-pnx4008/time.c b/arch/arm/mach-pnx4008/time.c
index b986065cd0f3..8621c206ac84 100644
--- a/arch/arm/mach-pnx4008/time.c
+++ b/arch/arm/mach-pnx4008/time.c
@@ -47,15 +47,14 @@ static unsigned long pnx4008_gettimeoffset(void)
 /*!
  * IRQ handler for the timer
  */
-static irqreturn_t pnx4008_timer_interrupt(int irq, void *dev_id,
-                                           struct pt_regs *regs)
+static irqreturn_t pnx4008_timer_interrupt(int irq, void *dev_id)
 {
         if (__raw_readl(HSTIM_INT) & MATCH0_INT) {
 
                 write_seqlock(&xtime_lock);
 
                 do {
-                        timer_tick(regs);
+                        timer_tick();
 
                         /*
                          * this algorithm takes care of possible delay
diff --git a/arch/arm/mach-pxa/corgi.c b/arch/arm/mach-pxa/corgi.c
index 337c01c4ac37..a1a900d16665 100644
--- a/arch/arm/mach-pxa/corgi.c
+++ b/arch/arm/mach-pxa/corgi.c
@@ -212,7 +212,7 @@ static struct platform_device corgits_device = {
  */
 static struct pxamci_platform_data corgi_mci_platform_data;
 
-static int corgi_mci_init(struct device *dev, irqreturn_t (*corgi_detect_int)(int, void *, struct pt_regs *), void *data)
+static int corgi_mci_init(struct device *dev, irq_handler_t corgi_detect_int, void *data)
 {
         int err;
 
diff --git a/arch/arm/mach-pxa/dma.c b/arch/arm/mach-pxa/dma.c
index 7d8c85486c66..4440babe7b97 100644
--- a/arch/arm/mach-pxa/dma.c
+++ b/arch/arm/mach-pxa/dma.c
@@ -27,13 +27,13 @@
 
 static struct dma_channel {
         char *name;
-        void (*irq_handler)(int, void *, struct pt_regs *);
+        void (*irq_handler)(int, void *);
         void *data;
 } dma_channels[PXA_DMA_CHANNELS];
 
 
 int pxa_request_dma (char *name, pxa_dma_prio prio,
-                         void (*irq_handler)(int, void *, struct pt_regs *),
+                         void (*irq_handler)(int, void *),
                          void *data)
 {
         unsigned long flags;
@@ -87,7 +87,7 @@ void pxa_free_dma (int dma_ch)
         local_irq_restore(flags);
 }
 
-static irqreturn_t dma_irq_handler(int irq, void *dev_id, struct pt_regs *regs)
+static irqreturn_t dma_irq_handler(int irq, void *dev_id)
 {
         int i, dint = DINT;
 
@@ -95,7 +95,7 @@ static irqreturn_t dma_irq_handler(int irq, void *dev_id, struct pt_regs *regs)
                 if (dint & (1 << i)) {
                         struct dma_channel *channel = &dma_channels[i];
                         if (channel->name && channel->irq_handler) {
-                                channel->irq_handler(i, channel->data, regs);
+                                channel->irq_handler(i, channel->data);
                         } else {
                                 /*
                                  * IRQ for an unregistered DMA channel:
diff --git a/arch/arm/mach-pxa/idp.c b/arch/arm/mach-pxa/idp.c
index 3e4b0ab71c66..64df44043a65 100644
--- a/arch/arm/mach-pxa/idp.c
+++ b/arch/arm/mach-pxa/idp.c
@@ -125,7 +125,7 @@ static struct pxafb_mach_info sharp_lm8v31 = {
         .pxafb_lcd_power = &idp_lcd_power
 };
 
-static int idp_mci_init(struct device *dev, irqreturn_t (*idp_detect_int)(int, void *, struct pt_regs *), void *data)
+static int idp_mci_init(struct device *dev, irq_handler_t idp_detect_int, void *data)
 {
         /* setup GPIO for PXA25x MMC controller */
         pxa_gpio_mode(GPIO6_MMCCLK_MD);
diff --git a/arch/arm/mach-pxa/irq.c b/arch/arm/mach-pxa/irq.c
index 12141e2a50cc..ab1a16025d51 100644
--- a/arch/arm/mach-pxa/irq.c
+++ b/arch/arm/mach-pxa/irq.c
@@ -143,8 +143,7 @@ static struct irq_chip pxa_low_gpio_chip = {
  * Demux handler for GPIO>=2 edge detect interrupts
  */
 
-static void pxa_gpio_demux_handler(unsigned int irq, struct irqdesc *desc,
-                                   struct pt_regs *regs)
+static void pxa_gpio_demux_handler(unsigned int irq, struct irqdesc *desc)
 {
         unsigned int mask;
         int loop;
@@ -160,7 +159,7 @@ static void pxa_gpio_demux_handler(unsigned int irq, struct irqdesc *desc,
                         mask >>= 2;
                         do {
                                 if (mask & 1)
-                                        desc_handle_irq(irq, desc, regs);
+                                        desc_handle_irq(irq, desc);
                                 irq++;
                                 desc++;
                                 mask >>= 1;
@@ -175,7 +174,7 @@ static void pxa_gpio_demux_handler(unsigned int irq, struct irqdesc *desc,
                         desc = irq_desc + irq;
                         do {
                                 if (mask & 1)
-                                        desc_handle_irq(irq, desc, regs);
+                                        desc_handle_irq(irq, desc);
                                 irq++;
                                 desc++;
                                 mask >>= 1;
@@ -190,7 +189,7 @@ static void pxa_gpio_demux_handler(unsigned int irq, struct irqdesc *desc,
                         desc = irq_desc + irq;
                         do {
                                 if (mask & 1)
-                                        desc_handle_irq(irq, desc, regs);
+                                        desc_handle_irq(irq, desc);
                                 irq++;
                                 desc++;
                                 mask >>= 1;
@@ -206,7 +205,7 @@ static void pxa_gpio_demux_handler(unsigned int irq, struct irqdesc *desc,
                         desc = irq_desc + irq;
                         do {
                                 if (mask & 1)
-                                        desc_handle_irq(irq, desc, regs);
+                                        desc_handle_irq(irq, desc);
                                 irq++;
                                 desc++;
                                 mask >>= 1;
diff --git a/arch/arm/mach-pxa/lpd270.c b/arch/arm/mach-pxa/lpd270.c
index eff2a91b2565..5749f6b72e12 100644
--- a/arch/arm/mach-pxa/lpd270.c
+++ b/arch/arm/mach-pxa/lpd270.c
@@ -75,8 +75,7 @@ static struct irq_chip lpd270_irq_chip = {
         .unmask         = lpd270_unmask_irq,
 };
 
-static void lpd270_irq_handler(unsigned int irq, struct irqdesc *desc,
-                                  struct pt_regs *regs)
+static void lpd270_irq_handler(unsigned int irq, struct irqdesc *desc)
 {
         unsigned long pending;
 
@@ -86,7 +85,7 @@ static void lpd270_irq_handler(unsigned int irq, struct irqdesc *desc,
                 if (likely(pending)) {
                         irq = LPD270_IRQ(0) + __ffs(pending);
                         desc = irq_desc + irq;
-                        desc_handle_irq(irq, desc, regs);
+                        desc_handle_irq(irq, desc);
 
                         pending = __raw_readw(LPD270_INT_STATUS) &
                                                 lpd270_irq_enabled;
diff --git a/arch/arm/mach-pxa/lubbock.c b/arch/arm/mach-pxa/lubbock.c
index 157cf47cbe66..ee80d62119d3 100644
--- a/arch/arm/mach-pxa/lubbock.c
+++ b/arch/arm/mach-pxa/lubbock.c
@@ -85,8 +85,7 @@ static struct irq_chip lubbock_irq_chip = {
         .unmask         = lubbock_unmask_irq,
 };
 
-static void lubbock_irq_handler(unsigned int irq, struct irqdesc *desc,
-                                struct pt_regs *regs)
+static void lubbock_irq_handler(unsigned int irq, struct irqdesc *desc)
 {
         unsigned long pending = LUB_IRQ_SET_CLR & lubbock_irq_enabled;
         do {
@@ -94,7 +93,7 @@ static void lubbock_irq_handler(unsigned int irq, struct irqdesc *desc,
                 if (likely(pending)) {
                         irq = LUBBOCK_IRQ(0) + __ffs(pending);
                         desc = irq_desc + irq;
-                        desc_handle_irq(irq, desc, regs);
+                        desc_handle_irq(irq, desc);
                 }
                 pending = LUB_IRQ_SET_CLR & lubbock_irq_enabled;
         } while (pending);
@@ -379,7 +378,7 @@ static struct pxafb_mach_info sharp_lm8v31 = {
 #define MMC_POLL_RATE           msecs_to_jiffies(1000)
 
 static void lubbock_mmc_poll(unsigned long);
-static irqreturn_t (*mmc_detect_int)(int, void *, struct pt_regs *);
+static irq_handler_t mmc_detect_int;
 
 static struct timer_list mmc_timer = {
         .function       = lubbock_mmc_poll,
@@ -403,17 +402,17 @@ static void lubbock_mmc_poll(unsigned long data)
         }
 }
 
-static irqreturn_t lubbock_detect_int(int irq, void *data, struct pt_regs *regs)
+static irqreturn_t lubbock_detect_int(int irq, void *data)
 {
         /* IRQ is level triggered; disable, and poll for removal */
         disable_irq(irq);
         mod_timer(&mmc_timer, jiffies + MMC_POLL_RATE);
 
-        return mmc_detect_int(irq, data, regs);
+        return mmc_detect_int(irq, data);
 }
 
 static int lubbock_mci_init(struct device *dev,
-                irqreturn_t (*detect_int)(int, void *, struct pt_regs *),
+                irq_handler_t detect_int,
                 void *data)
 {
         /* setup GPIO for PXA25x MMC controller */
diff --git a/arch/arm/mach-pxa/mainstone.c b/arch/arm/mach-pxa/mainstone.c
index 7ba0447d6fa3..49c34d94a9fe 100644
--- a/arch/arm/mach-pxa/mainstone.c
+++ b/arch/arm/mach-pxa/mainstone.c
@@ -71,8 +71,7 @@ static struct irq_chip mainstone_irq_chip = {
         .unmask         = mainstone_unmask_irq,
 };
 
-static void mainstone_irq_handler(unsigned int irq, struct irqdesc *desc,
-                                  struct pt_regs *regs)
+static void mainstone_irq_handler(unsigned int irq, struct irqdesc *desc)
 {
         unsigned long pending = MST_INTSETCLR & mainstone_irq_enabled;
         do {
@@ -80,7 +79,7 @@ static void mainstone_irq_handler(unsigned int irq, struct irqdesc *desc,
                 if (likely(pending)) {
                         irq = MAINSTONE_IRQ(0) + __ffs(pending);
                         desc = irq_desc + irq;
-                        desc_handle_irq(irq, desc, regs);
+                        desc_handle_irq(irq, desc);
                 }
                 pending = MST_INTSETCLR & mainstone_irq_enabled;
         } while (pending);
@@ -314,7 +313,7 @@ static struct pxafb_mach_info mainstone_pxafb_info = {
         .pxafb_backlight_power  = mainstone_backlight_power,
 };
 
-static int mainstone_mci_init(struct device *dev, irqreturn_t (*mstone_detect_int)(int, void *, struct pt_regs *), void *data)
+static int mainstone_mci_init(struct device *dev, irq_handler_t mstone_detect_int, void *data)
 {
         int err;
 
diff --git a/arch/arm/mach-pxa/poodle.c b/arch/arm/mach-pxa/poodle.c
index 5e8c098ca139..34fb80b37023 100644
--- a/arch/arm/mach-pxa/poodle.c
+++ b/arch/arm/mach-pxa/poodle.c
@@ -197,7 +197,7 @@ static struct platform_device poodle_ts_device = {
  */
 static struct pxamci_platform_data poodle_mci_platform_data;
 
-static int poodle_mci_init(struct device *dev, irqreturn_t (*poodle_detect_int)(int, void *, struct pt_regs *), void *data)
+static int poodle_mci_init(struct device *dev, irq_handler_t poodle_detect_int, void *data)
 {
         int err;
 
diff --git a/arch/arm/mach-pxa/spitz.c b/arch/arm/mach-pxa/spitz.c
index 401cdb850fbc..3cbac63bed3c 100644
--- a/arch/arm/mach-pxa/spitz.c
+++ b/arch/arm/mach-pxa/spitz.c
@@ -291,7 +291,7 @@ static struct platform_device spitzts_device = {
 
 static struct pxamci_platform_data spitz_mci_platform_data;
 
-static int spitz_mci_init(struct device *dev, irqreturn_t (*spitz_detect_int)(int, void *, struct pt_regs *), void *data)
+static int spitz_mci_init(struct device *dev, irq_handler_t spitz_detect_int, void *data)
 {
         int err;
 
diff --git a/arch/arm/mach-pxa/ssp.c b/arch/arm/mach-pxa/ssp.c
index 1fddfeaa630d..6cc202755fb4 100644
--- a/arch/arm/mach-pxa/ssp.c
+++ b/arch/arm/mach-pxa/ssp.c
@@ -65,7 +65,7 @@ static const struct ssp_info_ ssp_info[PXA_SSP_PORTS] = {
 static DEFINE_MUTEX(mutex);
 static int use_count[PXA_SSP_PORTS] = {0, 0, 0};
 
-static irqreturn_t ssp_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+static irqreturn_t ssp_interrupt(int irq, void *dev_id)
 {
         struct ssp_dev *dev = (struct ssp_dev*) dev_id;
         unsigned int status = SSSR_P(dev->port);
diff --git a/arch/arm/mach-pxa/time.c b/arch/arm/mach-pxa/time.c
index 5dbd191c57c4..3ac268fa419b 100644
--- a/arch/arm/mach-pxa/time.c
+++ b/arch/arm/mach-pxa/time.c
@@ -75,7 +75,7 @@ static int match_posponed;
 #endif
 
 static irqreturn_t
-pxa_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+pxa_timer_interrupt(int irq, void *dev_id)
 {
         int next_match;
 
@@ -105,7 +105,7 @@ pxa_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
          * exactly one tick period which should be a pretty rare event.
          */
         do {
-                timer_tick(regs);
+                timer_tick();
                 OSSR = OSSR_M0;  /* Clear match on timer 0 */
                 next_match = (OSMR0 += LATCH);
         } while( (signed long)(next_match - OSCR) <= 8 );
@@ -157,13 +157,13 @@ static void pxa_dyn_tick_reprogram(unsigned long ticks)
 }
 
 static irqreturn_t
-pxa_dyn_tick_handler(int irq, void *dev_id, struct pt_regs *regs)
+pxa_dyn_tick_handler(int irq, void *dev_id)
 {
         if (match_posponed) {
                 match_posponed = 0;
                 OSMR0 = initial_match;
                 if ( (signed long)(initial_match - OSCR) <= 8 )
-                        return pxa_timer_interrupt(irq, dev_id, regs);
+                        return pxa_timer_interrupt(irq, dev_id);
         }
         return IRQ_NONE;
 }
diff --git a/arch/arm/mach-pxa/tosa.c b/arch/arm/mach-pxa/tosa.c
index 249353616aba..7915a5a22865 100644
--- a/arch/arm/mach-pxa/tosa.c
+++ b/arch/arm/mach-pxa/tosa.c
@@ -174,7 +174,7 @@ static struct pxa2xx_udc_mach_info udc_info __initdata = {
  */
 static struct pxamci_platform_data tosa_mci_platform_data;
 
-static int tosa_mci_init(struct device *dev, irqreturn_t (*tosa_detect_int)(int, void *, struct pt_regs *), void *data)
+static int tosa_mci_init(struct device *dev, irq_handler_t tosa_detect_int, void *data)
 {
         int err;
 
diff --git a/arch/arm/mach-pxa/trizeps4.c b/arch/arm/mach-pxa/trizeps4.c
index 910571e9a190..c1827d021ba8 100644
--- a/arch/arm/mach-pxa/trizeps4.c
+++ b/arch/arm/mach-pxa/trizeps4.c
@@ -270,7 +270,7 @@ void board_pcmcia_power(int power)	{;}
 #endif          /* CONFIG_MACH_TRIZEPS4_CONXS */
 EXPORT_SYMBOL(board_pcmcia_power);
 
-static int trizeps4_mci_init(struct device *dev, irqreturn_t (*mci_detect_int)(int, void *, struct pt_regs *), void *data)
+static int trizeps4_mci_init(struct device *dev, irq_handler_t mci_detect_int, void *data)
 {
         int err;
         /* setup GPIO for PXA27x MMC controller */
diff --git a/arch/arm/mach-realview/core.c b/arch/arm/mach-realview/core.c
index da0286973823..68c67053f479 100644
--- a/arch/arm/mach-realview/core.c
+++ b/arch/arm/mach-realview/core.c
@@ -515,18 +515,18 @@ static unsigned long realview_gettimeoffset(void)
 /*
  * IRQ handler for the timer
  */
-static irqreturn_t realview_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+static irqreturn_t realview_timer_interrupt(int irq, void *dev_id)
 {
         write_seqlock(&xtime_lock);
 
         // ...clear the interrupt
         writel(1, TIMER0_VA_BASE + TIMER_INTCLR);
 
-        timer_tick(regs);
+        timer_tick();
 
 #if defined(CONFIG_SMP) && !defined(CONFIG_LOCAL_TIMERS)
         smp_send_timer();
-        update_process_times(user_mode(regs));
+        update_process_times(user_mode(get_irq_regs()));
 #endif
 
         write_sequnlock(&xtime_lock);
diff --git a/arch/arm/mach-rpc/dma.c b/arch/arm/mach-rpc/dma.c
index ac511d41d4d7..596379a4cf82 100644
--- a/arch/arm/mach-rpc/dma.c
+++ b/arch/arm/mach-rpc/dma.c
@@ -83,7 +83,7 @@ static void iomd_get_next_sg(struct scatterlist *sg, dma_t *dma)
         sg->length |= flags;
 }
 
-static irqreturn_t iomd_dma_handle(int irq, void *dev_id, struct pt_regs *regs)
+static irqreturn_t iomd_dma_handle(int irq, void *dev_id)
 {
         dma_t *dma = (dma_t *)dev_id;
         unsigned long base = dma->dma_base;
diff --git a/arch/arm/mach-s3c2410/bast-irq.c b/arch/arm/mach-s3c2410/bast-irq.c
index 440e9aa0211a..23d5beea5568 100644
--- a/arch/arm/mach-s3c2410/bast-irq.c
+++ b/arch/arm/mach-s3c2410/bast-irq.c
@@ -112,8 +112,7 @@ static struct irqchip  bast_pc104_chip = {
 
 static void
 bast_irq_pc104_demux(unsigned int irq,
-                     struct irqdesc *desc,
-                     struct pt_regs *regs)
+                     struct irqdesc *desc)
 {
         unsigned int stat;
         unsigned int irqno;
@@ -133,7 +132,7 @@ bast_irq_pc104_demux(unsigned int irq,
                         if (stat & 1) {
                                 irqno = bast_pc104_irqs[i];
                                 desc = irq_desc + irqno;
-                                desc_handle_irq(irqno, desc, regs);
+                                desc_handle_irq(irqno, desc);
                         }
                 }
         }
diff --git a/arch/arm/mach-s3c2410/dma.c b/arch/arm/mach-s3c2410/dma.c
index d264bbbd8bef..3d211dc2f2f9 100644
--- a/arch/arm/mach-s3c2410/dma.c
+++ b/arch/arm/mach-s3c2410/dma.c
@@ -595,7 +595,7 @@ s3c2410_dma_lastxfer(struct s3c2410_dma_chan *chan)
 #define dmadbg2(x...)
 
 static irqreturn_t
-s3c2410_dma_irq(int irq, void *devpw, struct pt_regs *regs)
+s3c2410_dma_irq(int irq, void *devpw)
 {
         struct s3c2410_dma_chan *chan = (struct s3c2410_dma_chan *)devpw;
         struct s3c2410_dma_buf  *buf;
diff --git a/arch/arm/mach-s3c2410/irq.c b/arch/arm/mach-s3c2410/irq.c
index 3e9f3462c61b..683b3491ba3c 100644
--- a/arch/arm/mach-s3c2410/irq.c
+++ b/arch/arm/mach-s3c2410/irq.c
@@ -480,8 +480,7 @@ static struct irqchip s3c_irq_adc = {
 
 /* irq demux for adc */
 static void s3c_irq_demux_adc(unsigned int irq,
-                              struct irqdesc *desc,
-                              struct pt_regs *regs)
+                              struct irqdesc *desc)
 {
         unsigned int subsrc, submsk;
         unsigned int offset = 9;
@@ -500,17 +499,16 @@ static void s3c_irq_demux_adc(unsigned int irq,
         if (subsrc != 0) {
                 if (subsrc & 1) {
                         mydesc = irq_desc + IRQ_TC;
-                        desc_handle_irq(IRQ_TC, mydesc, regs);
+                        desc_handle_irq(IRQ_TC, mydesc);
                 }
                 if (subsrc & 2) {
                         mydesc = irq_desc + IRQ_ADC;
-                        desc_handle_irq(IRQ_ADC, mydesc, regs);
+                        desc_handle_irq(IRQ_ADC, mydesc);
                 }
         }
 }
 
-static void s3c_irq_demux_uart(unsigned int start,
-                               struct pt_regs *regs)
+static void s3c_irq_demux_uart(unsigned int start)
 {
         unsigned int subsrc, submsk;
         unsigned int offset = start - IRQ_S3CUART_RX0;
@@ -533,17 +531,17 @@ static void s3c_irq_demux_uart(unsigned int start,
                 desc = irq_desc + start;
 
                 if (subsrc & 1)
-                        desc_handle_irq(start, desc, regs);
+                        desc_handle_irq(start, desc);
 
                 desc++;
 
                 if (subsrc & 2)
-                        desc_handle_irq(start+1, desc, regs);
+                        desc_handle_irq(start+1, desc);
 
                 desc++;
 
                 if (subsrc & 4)
-                        desc_handle_irq(start+2, desc, regs);
+                        desc_handle_irq(start+2, desc);
         }
 }
 
@@ -551,35 +549,31 @@ static void s3c_irq_demux_uart(unsigned int start,
 
 static void
 s3c_irq_demux_uart0(unsigned int irq,
-                    struct irqdesc *desc,
-                    struct pt_regs *regs)
+                    struct irqdesc *desc)
 {
         irq = irq;
-        s3c_irq_demux_uart(IRQ_S3CUART_RX0, regs);
+        s3c_irq_demux_uart(IRQ_S3CUART_RX0);
 }
 
 static void
 s3c_irq_demux_uart1(unsigned int irq,
-                    struct irqdesc *desc,
-                    struct pt_regs *regs)
+                    struct irqdesc *desc)
 {
         irq = irq;
-        s3c_irq_demux_uart(IRQ_S3CUART_RX1, regs);
+        s3c_irq_demux_uart(IRQ_S3CUART_RX1);
 }
 
 static void
 s3c_irq_demux_uart2(unsigned int irq,
-                    struct irqdesc *desc,
-                    struct pt_regs *regs)
+                    struct irqdesc *desc)
 {
         irq = irq;
-        s3c_irq_demux_uart(IRQ_S3CUART_RX2, regs);
+        s3c_irq_demux_uart(IRQ_S3CUART_RX2);
 }
 
 static void
 s3c_irq_demux_extint8(unsigned int irq,
-                      struct irqdesc *desc,
-                      struct pt_regs *regs)
+                      struct irqdesc *desc)
 {
         unsigned long eintpnd = __raw_readl(S3C24XX_EINTPEND);
         unsigned long eintmsk = __raw_readl(S3C24XX_EINTMASK);
@@ -594,15 +588,14 @@ s3c_irq_demux_extint8(unsigned int irq,
                 eintpnd &= ~(1<<irq);
 
                 irq += (IRQ_EINT4 - 4);
-                desc_handle_irq(irq, irq_desc + irq, regs);
+                desc_handle_irq(irq, irq_desc + irq);
         }
 
 }
 
 static void
 s3c_irq_demux_extint4t7(unsigned int irq,
-                        struct irqdesc *desc,
-                        struct pt_regs *regs)
+                        struct irqdesc *desc)
 {
         unsigned long eintpnd = __raw_readl(S3C24XX_EINTPEND);
         unsigned long eintmsk = __raw_readl(S3C24XX_EINTMASK);
@@ -618,7 +611,7 @@ s3c_irq_demux_extint4t7(unsigned int irq,
 
                 irq += (IRQ_EINT4 - 4);
 
-                desc_handle_irq(irq, irq_desc + irq, regs);
+                desc_handle_irq(irq, irq_desc + irq);
         }
 }
 
diff --git a/arch/arm/mach-s3c2410/mach-amlm5900.c b/arch/arm/mach-s3c2410/mach-amlm5900.c
index ba5109af40b4..817e2c684410 100644
--- a/arch/arm/mach-s3c2410/mach-amlm5900.c
+++ b/arch/arm/mach-s3c2410/mach-amlm5900.c
@@ -226,7 +226,7 @@ static struct s3c2410fb_mach_info __initdata amlm5900_lcd_info = {
 #endif
 
 static irqreturn_t
-amlm5900_wake_interrupt(int irq, void *ignored, struct pt_regs *regs)
+amlm5900_wake_interrupt(int irq, void *ignored)
 {
         return IRQ_HANDLED;
 }
diff --git a/arch/arm/mach-s3c2410/s3c2440-irq.c b/arch/arm/mach-s3c2410/s3c2440-irq.c
index fc08febe2e54..39db0752d53b 100644
--- a/arch/arm/mach-s3c2410/s3c2440-irq.c
+++ b/arch/arm/mach-s3c2410/s3c2440-irq.c
@@ -42,8 +42,7 @@
 /* WDT/AC97 */
 
 static void s3c_irq_demux_wdtac97(unsigned int irq,
-                                  struct irqdesc *desc,
-                                  struct pt_regs *regs)
+                                  struct irqdesc *desc)
 {
         unsigned int subsrc, submsk;
         struct irqdesc *mydesc;
@@ -61,11 +60,11 @@ static void s3c_irq_demux_wdtac97(unsigned int irq,
         if (subsrc != 0) {
                 if (subsrc & 1) {
                         mydesc = irq_desc + IRQ_S3C2440_WDT;
-                        desc_handle_irq(IRQ_S3C2440_WDT, mydesc, regs);
+                        desc_handle_irq(IRQ_S3C2440_WDT, mydesc);
                 }
                 if (subsrc & 2) {
                         mydesc = irq_desc + IRQ_S3C2440_AC97;
-                        desc_handle_irq(IRQ_S3C2440_AC97, mydesc, regs);
+                        desc_handle_irq(IRQ_S3C2440_AC97, mydesc);
                 }
         }
 }
diff --git a/arch/arm/mach-s3c2410/s3c244x-irq.c b/arch/arm/mach-s3c2410/s3c244x-irq.c
index ec702f88b299..146f2109dd90 100644
--- a/arch/arm/mach-s3c2410/s3c244x-irq.c
+++ b/arch/arm/mach-s3c2410/s3c244x-irq.c
@@ -42,8 +42,7 @@
 /* camera irq */
 
 static void s3c_irq_demux_cam(unsigned int irq,
-                              struct irqdesc *desc,
-                              struct pt_regs *regs)
+                              struct irqdesc *desc)
 {
         unsigned int subsrc, submsk;
         struct irqdesc *mydesc;
@@ -61,11 +60,11 @@ static void s3c_irq_demux_cam(unsigned int irq,
         if (subsrc != 0) {
                 if (subsrc & 1) {
                         mydesc = irq_desc + IRQ_S3C2440_CAM_C;
-                        desc_handle_irq(IRQ_S3C2440_CAM_C, mydesc, regs);
+                        desc_handle_irq(IRQ_S3C2440_CAM_C, mydesc);
                 }
                 if (subsrc & 2) {
                         mydesc = irq_desc + IRQ_S3C2440_CAM_P;
-                        desc_handle_irq(IRQ_S3C2440_CAM_P, mydesc, regs);
+                        desc_handle_irq(IRQ_S3C2440_CAM_P, mydesc);
                 }
         }
 }
diff --git a/arch/arm/mach-s3c2410/time.c b/arch/arm/mach-s3c2410/time.c
index 00d1cfca9712..9910bf0f2cea 100644
--- a/arch/arm/mach-s3c2410/time.c
+++ b/arch/arm/mach-s3c2410/time.c
@@ -128,10 +128,10 @@ static unsigned long s3c2410_gettimeoffset (void)
  * IRQ handler for the timer
  */
 static irqreturn_t
-s3c2410_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+s3c2410_timer_interrupt(int irq, void *dev_id)
 {
         write_seqlock(&xtime_lock);
-        timer_tick(regs);
+        timer_tick();
         write_sequnlock(&xtime_lock);
         return IRQ_HANDLED;
 }
diff --git a/arch/arm/mach-s3c2410/usb-simtec.c b/arch/arm/mach-s3c2410/usb-simtec.c
index c635efa7cd31..22b0e1cdd4bf 100644
--- a/arch/arm/mach-s3c2410/usb-simtec.c
+++ b/arch/arm/mach-s3c2410/usb-simtec.c
@@ -58,7 +58,7 @@ usb_simtec_powercontrol(int port, int to)
 }
 
 static irqreturn_t
-usb_simtec_ocirq(int irq, void *pw, struct pt_regs *regs)
+usb_simtec_ocirq(int irq, void *pw)
 {
         struct s3c2410_hcd_info *info = (struct s3c2410_hcd_info *)pw;
 
diff --git a/arch/arm/mach-sa1100/dma.c b/arch/arm/mach-sa1100/dma.c
index 2ea2a657a034..1fbe053e8b59 100644
--- a/arch/arm/mach-sa1100/dma.c
+++ b/arch/arm/mach-sa1100/dma.c
@@ -42,7 +42,7 @@ static sa1100_dma_t dma_chan[SA1100_DMA_CHANNELS];
 static spinlock_t dma_list_lock;
 
 
-static irqreturn_t dma_irq_handler(int irq, void *dev_id, struct pt_regs *regs)
+static irqreturn_t dma_irq_handler(int irq, void *dev_id)
 {
         dma_regs_t *dma_regs = dev_id;
         sa1100_dma_t *dma = dma_chan + (((u_int)dma_regs >> 5) & 7);
diff --git a/arch/arm/mach-sa1100/h3600.c b/arch/arm/mach-sa1100/h3600.c
index 7364478cec12..fa6dc71bd6ad 100644
--- a/arch/arm/mach-sa1100/h3600.c
+++ b/arch/arm/mach-sa1100/h3600.c
@@ -702,7 +702,7 @@ static u32 gpio_irq_mask[] = {
         GPIO2_SD_CON_SLT,
 };
 
-static void h3800_IRQ_demux(unsigned int irq, struct irqdesc *desc, struct pt_regs *regs)
+static void h3800_IRQ_demux(unsigned int irq, struct irqdesc *desc)
 {
         int i;
 
@@ -719,14 +719,14 @@ static void h3800_IRQ_demux(unsigned int irq, struct irqdesc *desc, struct pt_re
                 if (0) printk("%s KPIO 0x%08X\n", __FUNCTION__, irq);
                 for (j = 0; j < H3800_KPIO_IRQ_COUNT; j++)
                         if (irq & kpio_irq_mask[j])
-                                do_edge_IRQ(H3800_KPIO_IRQ_COUNT + j, irq_desc + H3800_KPIO_IRQ_COUNT + j, regs);
+                                do_edge_IRQ(H3800_KPIO_IRQ_COUNT + j, irq_desc + H3800_KPIO_IRQ_COUNT + j);
 
                 /* GPIO2 */
                 irq = H3800_ASIC2_GPIINTFLAG;
                 if (0) printk("%s GPIO 0x%08X\n", __FUNCTION__, irq);
                 for (j = 0; j < H3800_GPIO_IRQ_COUNT; j++)
                         if (irq & gpio_irq_mask[j])
-                                do_edge_IRQ(H3800_GPIO_IRQ_COUNT + j, irq_desc + H3800_GPIO_IRQ_COUNT + j , regs);
+                                do_edge_IRQ(H3800_GPIO_IRQ_COUNT + j, irq_desc + H3800_GPIO_IRQ_COUNT + j);
         }
 
         if (i >= MAX_ASIC_ISR_LOOPS)
diff --git a/arch/arm/mach-sa1100/irq.c b/arch/arm/mach-sa1100/irq.c
index b55b90a2e8fe..f4c6322ca33e 100644
--- a/arch/arm/mach-sa1100/irq.c
+++ b/arch/arm/mach-sa1100/irq.c
@@ -110,8 +110,7 @@ static struct irq_chip sa1100_low_gpio_chip = {
  * and call the handler.
  */
 static void
-sa1100_high_gpio_handler(unsigned int irq, struct irqdesc *desc,
-                         struct pt_regs *regs)
+sa1100_high_gpio_handler(unsigned int irq, struct irqdesc *desc)
 {
         unsigned int mask;
 
@@ -128,7 +127,7 @@ sa1100_high_gpio_handler(unsigned int irq, struct irqdesc *desc,
                 mask >>= 11;
                 do {
                         if (mask & 1)
-                                desc_handle_irq(irq, desc, regs);
+                                desc_handle_irq(irq, desc);
                         mask >>= 1;
                         irq++;
                         desc++;
diff --git a/arch/arm/mach-sa1100/neponset.c b/arch/arm/mach-sa1100/neponset.c
index af6d2775cf82..354d5e91da59 100644
--- a/arch/arm/mach-sa1100/neponset.c
+++ b/arch/arm/mach-sa1100/neponset.c
@@ -29,7 +29,7 @@
  * is rather unfortunate.
  */
 static void
-neponset_irq_handler(unsigned int irq, struct irqdesc *desc, struct pt_regs *regs)
+neponset_irq_handler(unsigned int irq, struct irqdesc *desc)
 {
         unsigned int irr;
 
@@ -69,12 +69,12 @@ neponset_irq_handler(unsigned int irq, struct irqdesc *desc, struct pt_regs *reg
 
                         if (irr & IRR_ETHERNET) {
                                 d = irq_desc + IRQ_NEPONSET_SMC9196;
-                                desc_handle_irq(IRQ_NEPONSET_SMC9196, d, regs);
+                                desc_handle_irq(IRQ_NEPONSET_SMC9196, d);
                         }
 
                         if (irr & IRR_USAR) {
                                 d = irq_desc + IRQ_NEPONSET_USAR;
-                                desc_handle_irq(IRQ_NEPONSET_USAR, d, regs);
+                                desc_handle_irq(IRQ_NEPONSET_USAR, d);
                         }
 
                         desc->chip->unmask(irq);
@@ -82,7 +82,7 @@ neponset_irq_handler(unsigned int irq, struct irqdesc *desc, struct pt_regs *reg
 
                 if (irr & IRR_SA1111) {
                         d = irq_desc + IRQ_NEPONSET_SA1111;
-                        desc_handle_irq(IRQ_NEPONSET_SA1111, d, regs);
+                        desc_handle_irq(IRQ_NEPONSET_SA1111, d);
                 }
         }
 }
diff --git a/arch/arm/mach-sa1100/ssp.c b/arch/arm/mach-sa1100/ssp.c
index 5eba5fbbb561..59703c6fb29b 100644
--- a/arch/arm/mach-sa1100/ssp.c
+++ b/arch/arm/mach-sa1100/ssp.c
@@ -25,7 +25,7 @@
 
 #define TIMEOUT 100000
 
-static irqreturn_t ssp_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+static irqreturn_t ssp_interrupt(int irq, void *dev_id)
 {
         unsigned int status = Ser4SSSR;
 
diff --git a/arch/arm/mach-sa1100/time.c b/arch/arm/mach-sa1100/time.c
index 49ae716e16c2..4284bd6f7a1f 100644
--- a/arch/arm/mach-sa1100/time.c
+++ b/arch/arm/mach-sa1100/time.c
@@ -77,7 +77,7 @@ static int match_posponed;
 #endif
 
 static irqreturn_t
-sa1100_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+sa1100_timer_interrupt(int irq, void *dev_id)
 {
         unsigned int next_match;
 
@@ -99,7 +99,7 @@ sa1100_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
          * handlers.
          */
         do {
-                timer_tick(regs);
+                timer_tick();
                 OSSR = OSSR_M0;  /* Clear match on timer 0 */
                 next_match = (OSMR0 += LATCH);
         } while ((signed long)(next_match - OSCR) <= 0);
@@ -151,13 +151,13 @@ static void sa1100_dyn_tick_reprogram(unsigned long ticks)
 }
 
 static irqreturn_t
-sa1100_dyn_tick_handler(int irq, void *dev_id, struct pt_regs *regs)
+sa1100_dyn_tick_handler(int irq, void *dev_id)
 {
         if (match_posponed) {
                 match_posponed = 0;
                 OSMR0 = initial_match;
                 if ((signed long)(initial_match - OSCR) <= 0)
-                        return sa1100_timer_interrupt(irq, dev_id, regs);
+                        return sa1100_timer_interrupt(irq, dev_id);
         }
         return IRQ_NONE;
 }
diff --git a/arch/arm/mach-shark/core.c b/arch/arm/mach-shark/core.c
index 1095df34fec0..0e480fae8ec5 100644
--- a/arch/arm/mach-shark/core.c
+++ b/arch/arm/mach-shark/core.c
@@ -80,10 +80,10 @@ static void __init shark_map_io(void)
 #define HZ_TIME ((1193180 + HZ/2) / HZ)
 
 static irqreturn_t
-shark_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+shark_timer_interrupt(int irq, void *dev_id)
 {
         write_seqlock(&xtime_lock);
-        timer_tick(regs);
+        timer_tick();
         write_sequnlock(&xtime_lock);
         return IRQ_HANDLED;
 }
diff --git a/arch/arm/mach-shark/irq.c b/arch/arm/mach-shark/irq.c
index b227052296cf..297ecf130650 100644
--- a/arch/arm/mach-shark/irq.c
+++ b/arch/arm/mach-shark/irq.c
@@ -61,7 +61,7 @@ static void shark_enable_8259A_irq(unsigned int irq)
 
 static void shark_ack_8259A_irq(unsigned int irq){}
 
-static irqreturn_t bogus_int(int irq, void *dev_id, struct pt_regs *regs)
+static irqreturn_t bogus_int(int irq, void *dev_id)
 {
         printk("Got interrupt %i!\n",irq);
         return IRQ_NONE;
diff --git a/arch/arm/mach-versatile/core.c b/arch/arm/mach-versatile/core.c
index f2bbef07b1e4..2aa150b57ba1 100644
--- a/arch/arm/mach-versatile/core.c
+++ b/arch/arm/mach-versatile/core.c
@@ -77,12 +77,12 @@ static struct irq_chip sic_chip = {
 };
 
 static void
-sic_handle_irq(unsigned int irq, struct irqdesc *desc, struct pt_regs *regs)
+sic_handle_irq(unsigned int irq, struct irqdesc *desc)
 {
         unsigned long status = readl(VA_SIC_BASE + SIC_IRQ_STATUS);
 
         if (status == 0) {
-                do_bad_IRQ(irq, desc, regs);
+                do_bad_IRQ(irq, desc);
                 return;
         }
 
@@ -93,7 +93,7 @@ sic_handle_irq(unsigned int irq, struct irqdesc *desc, struct pt_regs *regs)
                 irq += IRQ_SIC_START;
 
                 desc = irq_desc + irq;
-                desc_handle_irq(irq, desc, regs);
+                desc_handle_irq(irq, desc);
         } while (status);
 }
 
@@ -851,14 +851,14 @@ static unsigned long versatile_gettimeoffset(void)
 /*
  * IRQ handler for the timer
  */
-static irqreturn_t versatile_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+static irqreturn_t versatile_timer_interrupt(int irq, void *dev_id)
 {
         write_seqlock(&xtime_lock);
 
         // ...clear the interrupt
         writel(1, TIMER0_VA_BASE + TIMER_INTCLR);
 
-        timer_tick(regs);
+        timer_tick();
 
         write_sequnlock(&xtime_lock);
 
diff --git a/arch/arm/mm/ioremap.c b/arch/arm/mm/ioremap.c
index 591fc3187c7f..465440592791 100644
--- a/arch/arm/mm/ioremap.c
+++ b/arch/arm/mm/ioremap.c
@@ -361,14 +361,14 @@ __ioremap(unsigned long phys_addr, size_t size, unsigned long flags)
 }
 EXPORT_SYMBOL(__ioremap);
 
-void __iounmap(void __iomem *addr)
+void __iounmap(volatile void __iomem *addr)
 {
 #ifndef CONFIG_SMP
         struct vm_struct **p, *tmp;
 #endif
         unsigned int section_mapping = 0;
 
-        addr = (void __iomem *)(PAGE_MASK & (unsigned long)addr);
+        addr = (volatile void __iomem *)(PAGE_MASK & (unsigned long)addr);
 
 #ifndef CONFIG_SMP
         /*
@@ -395,6 +395,6 @@ void __iounmap(void __iomem *addr)
 #endif
 
         if (!section_mapping)
-                vunmap(addr);
+                vunmap((void __force *)addr);
 }
 EXPORT_SYMBOL(__iounmap);
diff --git a/arch/arm/oprofile/op_model_xscale.c b/arch/arm/oprofile/op_model_xscale.c
index 726ad2b3b435..7899d3ca75a3 100644
--- a/arch/arm/oprofile/op_model_xscale.c
+++ b/arch/arm/oprofile/op_model_xscale.c
@@ -341,7 +341,7 @@ static void inline __xsc2_check_ctrs(void)
         __asm__ __volatile__ ("mcr p14, 0, %0, c5, c1, 0" : : "r" (flag));
 }
 
-static irqreturn_t xscale_pmu_interrupt(int irq, void *arg, struct pt_regs *regs)
+static irqreturn_t xscale_pmu_interrupt(int irq, void *arg)
 {
         int i;
         u32 pmnc;
@@ -356,7 +356,7 @@ static irqreturn_t xscale_pmu_interrupt(int irq, void *arg, struct pt_regs *regs
                         continue;
 
                 write_counter(i, -(u32)results[i].reset_counter);
-                oprofile_add_sample(regs, i);
+                oprofile_add_sample(get_irq_regs(), i);
                 results[i].ovf--;
         }
 
diff --git a/arch/arm/plat-iop/time.c b/arch/arm/plat-iop/time.c
index 06282dffbdc6..f530abdaa7a1 100644
--- a/arch/arm/plat-iop/time.c
+++ b/arch/arm/plat-iop/time.c
@@ -47,7 +47,7 @@ unsigned long iop3xx_gettimeoffset(void)
 }
 
 static irqreturn_t
-iop3xx_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+iop3xx_timer_interrupt(int irq, void *dev_id)
 {
         write_seqlock(&xtime_lock);
 
@@ -57,7 +57,7 @@ iop3xx_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
 
         while ((signed long)(next_jiffy_time - *IOP3XX_TU_TCR1)
                                                         >= ticks_per_jiffy) {
-                timer_tick(regs);
+                timer_tick();
                 next_jiffy_time -= ticks_per_jiffy;
         }
 
diff --git a/arch/arm/plat-omap/dma.c b/arch/arm/plat-omap/dma.c
index 1bbb431843ce..bb045e5ddbd8 100644
--- a/arch/arm/plat-omap/dma.c
+++ b/arch/arm/plat-omap/dma.c
@@ -899,8 +899,7 @@ static int omap1_dma_handle_ch(int ch)
         return 1;
 }
 
-static irqreturn_t omap1_dma_irq_handler(int irq, void *dev_id,
-                                         struct pt_regs *regs)
+static irqreturn_t omap1_dma_irq_handler(int irq, void *dev_id)
 {
         int ch = ((int) dev_id) - 1;
         int handled = 0;
@@ -962,8 +961,7 @@ static int omap2_dma_handle_ch(int ch)
 }
 
 /* STATUS register count is from 1-32 while our is 0-31 */
-static irqreturn_t omap2_dma_irq_handler(int irq, void *dev_id,
-                                         struct pt_regs *regs)
+static irqreturn_t omap2_dma_irq_handler(int irq, void *dev_id)
 {
         u32 val;
         int i;
@@ -1220,8 +1218,7 @@ static void set_b1_regs(void)
         omap_writew(fi, OMAP1610_DMA_LCD_SRC_FI_B1_L);
 }
 
-static irqreturn_t lcd_dma_irq_handler(int irq, void *dev_id,
-                                       struct pt_regs *regs)
+static irqreturn_t lcd_dma_irq_handler(int irq, void *dev_id)
 {
         u16 w;
 
diff --git a/arch/arm/plat-omap/gpio.c b/arch/arm/plat-omap/gpio.c
index f55f99ae58ae..8162eed8b500 100644
--- a/arch/arm/plat-omap/gpio.c
+++ b/arch/arm/plat-omap/gpio.c
@@ -783,8 +783,7 @@ void omap_free_gpio(int gpio)
  * line's interrupt handler has been run, we may miss some nested
  * interrupts.
  */
-static void gpio_irq_handler(unsigned int irq, struct irqdesc *desc,
-                             struct pt_regs *regs)
+static void gpio_irq_handler(unsigned int irq, struct irqdesc *desc)
 {
         void __iomem *isr_reg = NULL;
         u32 isr;
@@ -882,7 +881,7 @@ static void gpio_irq_handler(unsigned int irq, struct irqdesc *desc,
                                 continue;
                         }
 
-                        desc_handle_irq(gpio_irq, d, regs);
+                        desc_handle_irq(gpio_irq, d);
 
                         if (unlikely((d->status & IRQ_PENDING) && !d->depth)) {
                                 irq_mask = 1 <<
diff --git a/arch/arm/plat-omap/mcbsp.c b/arch/arm/plat-omap/mcbsp.c
index ade9a0fa6ef6..ec50008a2df6 100644
--- a/arch/arm/plat-omap/mcbsp.c
+++ b/arch/arm/plat-omap/mcbsp.c
@@ -96,7 +96,7 @@ static void omap_mcbsp_dump_reg(u8 id)
         DBG("***********************\n");
 }
 
-static irqreturn_t omap_mcbsp_tx_irq_handler(int irq, void *dev_id, struct pt_regs *regs)
+static irqreturn_t omap_mcbsp_tx_irq_handler(int irq, void *dev_id)
 {
         struct omap_mcbsp * mcbsp_tx = (struct omap_mcbsp *)(dev_id);
 
@@ -106,7 +106,7 @@ static irqreturn_t omap_mcbsp_tx_irq_handler(int irq, void *dev_id, struct pt_re
         return IRQ_HANDLED;
 }
 
-static irqreturn_t omap_mcbsp_rx_irq_handler(int irq, void *dev_id, struct pt_regs *regs)
+static irqreturn_t omap_mcbsp_rx_irq_handler(int irq, void *dev_id)
 {
         struct omap_mcbsp * mcbsp_rx = (struct omap_mcbsp *)(dev_id);
 
diff --git a/arch/arm/plat-omap/timer32k.c b/arch/arm/plat-omap/timer32k.c
index cf6df3378d37..265310601161 100644
--- a/arch/arm/plat-omap/timer32k.c
+++ b/arch/arm/plat-omap/timer32k.c
@@ -194,8 +194,7 @@ unsigned long long sched_clock(void)
  * issues with dynamic tick. In the dynamic tick case, we need to lock
  * with irqsave.
  */
-static inline irqreturn_t _omap_32k_timer_interrupt(int irq, void *dev_id,
-                                        struct pt_regs *regs)
+static inline irqreturn_t _omap_32k_timer_interrupt(int irq, void *dev_id)
 {
         unsigned long now;
 
@@ -205,7 +204,7 @@ static inline irqreturn_t _omap_32k_timer_interrupt(int irq, void *dev_id,
         while ((signed long)(now - omap_32k_last_tick)
                                                 >= OMAP_32K_TICKS_PER_HZ) {
                 omap_32k_last_tick += OMAP_32K_TICKS_PER_HZ;
-                timer_tick(regs);
+                timer_tick();
         }
 
         /* Restart timer so we don't drift off due to modulo or dynamic tick.
@@ -218,19 +217,17 @@ static inline irqreturn_t _omap_32k_timer_interrupt(int irq, void *dev_id,
         return IRQ_HANDLED;
 }
 
-static irqreturn_t omap_32k_timer_handler(int irq, void *dev_id,
-                                        struct pt_regs *regs)
+static irqreturn_t omap_32k_timer_handler(int irq, void *dev_id)
 {
-        return _omap_32k_timer_interrupt(irq, dev_id, regs);
+        return _omap_32k_timer_interrupt(irq, dev_id);
 }
 
-static irqreturn_t omap_32k_timer_interrupt(int irq, void *dev_id,
-                                            struct pt_regs *regs)
+static irqreturn_t omap_32k_timer_interrupt(int irq, void *dev_id)
 {
         unsigned long flags;
 
         write_seqlock_irqsave(&xtime_lock, flags);
-        _omap_32k_timer_interrupt(irq, dev_id, regs);
+        _omap_32k_timer_interrupt(irq, dev_id);
         write_sequnlock_irqrestore(&xtime_lock, flags);
 
         return IRQ_HANDLED;
diff --git a/arch/frv/kernel/dma.c b/arch/frv/kernel/dma.c
index f5de6cf7df4e..156184e17e57 100644
--- a/arch/frv/kernel/dma.c
+++ b/arch/frv/kernel/dma.c
@@ -121,15 +121,14 @@ unsigned long frv_dma_inprogress;
 /*
  * DMA irq handler - determine channel involved, grab status and call real handler
  */
-static irqreturn_t dma_irq_handler(int irq, void *_channel, struct pt_regs *regs)
+static irqreturn_t dma_irq_handler(int irq, void *_channel)
 {
         struct frv_dma_channel *channel = _channel;
 
         frv_clear_dma_inprogress(channel - frv_dma_channels);
         return channel->handler(channel - frv_dma_channels,
                                 __get_DMAC(channel->ioaddr, CSTR),
-                                channel->data,
-                                regs);
+                                channel->data);
 
 } /* end dma_irq_handler() */
 
diff --git a/arch/frv/kernel/irq-mb93091.c b/arch/frv/kernel/irq-mb93091.c
index 369bc0a7443d..ad753c1e9b8f 100644
--- a/arch/frv/kernel/irq-mb93091.c
+++ b/arch/frv/kernel/irq-mb93091.c
@@ -80,7 +80,7 @@ static struct irq_chip frv_fpga_pic = {
 /*
  * FPGA PIC interrupt handler
  */
-static irqreturn_t fpga_interrupt(int irq, void *_mask, struct pt_regs *regs)
+static irqreturn_t fpga_interrupt(int irq, void *_mask)
 {
         uint16_t imr, mask = (unsigned long) _mask;
 
@@ -95,7 +95,7 @@ static irqreturn_t fpga_interrupt(int irq, void *_mask, struct pt_regs *regs)
                 irq = 31 - irq;
                 mask &= ~(1 << irq);
 
-                generic_handle_irq(IRQ_BASE_FPGA + irq, regs);
+                generic_handle_irq(IRQ_BASE_FPGA + irq);
         }
 
         return IRQ_HANDLED;
diff --git a/arch/frv/kernel/irq-mb93093.c b/arch/frv/kernel/irq-mb93093.c
index a43a22158956..e0983f6926ed 100644
--- a/arch/frv/kernel/irq-mb93093.c
+++ b/arch/frv/kernel/irq-mb93093.c
@@ -79,7 +79,7 @@ static struct irq_chip frv_fpga_pic = {
 /*
  * FPGA PIC interrupt handler
  */
-static irqreturn_t fpga_interrupt(int irq, void *_mask, struct pt_regs *regs)
+static irqreturn_t fpga_interrupt(int irq, void *_mask)
 {
         uint16_t imr, mask = (unsigned long) _mask;
 
@@ -94,7 +94,7 @@ static irqreturn_t fpga_interrupt(int irq, void *_mask, struct pt_regs *regs)
                 irq = 31 - irq;
                 mask &= ~(1 << irq);
 
-                generic_irq_handle(IRQ_BASE_FPGA + irq, regs);
+                generic_irq_handle(IRQ_BASE_FPGA + irq);
         }
 
         return IRQ_HANDLED;
diff --git a/arch/frv/kernel/irq-mb93493.c b/arch/frv/kernel/irq-mb93493.c
index 39c0188a3498..c157eeff871d 100644
--- a/arch/frv/kernel/irq-mb93493.c
+++ b/arch/frv/kernel/irq-mb93493.c
@@ -90,7 +90,7 @@ static struct irq_chip frv_mb93493_pic = {
 /*
  * MB93493 PIC interrupt handler
  */
-static irqreturn_t mb93493_interrupt(int irq, void *_piqsr, struct pt_regs *regs)
+static irqreturn_t mb93493_interrupt(int irq, void *_piqsr)
 {
         volatile void *piqsr = _piqsr;
         uint32_t iqsr;
@@ -106,7 +106,7 @@ static irqreturn_t mb93493_interrupt(int irq, void *_piqsr, struct pt_regs *regs
                 irq = 31 - irq;
                 iqsr &= ~(1 << irq);
 
-                generic_handle_irq(IRQ_BASE_MB93493 + irq, regs);
+                generic_handle_irq(IRQ_BASE_MB93493 + irq);
         }
 
         return IRQ_HANDLED;
diff --git a/arch/frv/kernel/irq.c b/arch/frv/kernel/irq.c
index 5ac041c7c0a4..87f360a4ea27 100644
--- a/arch/frv/kernel/irq.c
+++ b/arch/frv/kernel/irq.c
@@ -143,7 +143,7 @@ static struct irq_chip frv_cpu_pic = {
 asmlinkage void do_IRQ(void)
 {
         irq_enter();
-        generic_handle_irq(__get_IRL(), __frame);
+        generic_handle_irq(__get_IRL());
         irq_exit();
 }
 
diff --git a/arch/frv/kernel/time.c b/arch/frv/kernel/time.c
index 44a9aebc4f5a..ed588d73d7d8 100644
--- a/arch/frv/kernel/time.c
+++ b/arch/frv/kernel/time.c
@@ -40,7 +40,7 @@ unsigned long __nongprelbss __dsu_clock_speed_HZ;
 unsigned long __nongprelbss __serial_clock_speed_HZ;
 unsigned long __delay_loops_MHz;
 
-static irqreturn_t timer_interrupt(int irq, void *dummy, struct pt_regs *regs);
+static irqreturn_t timer_interrupt(int irq, void *dummy);
 
 static struct irqaction timer_irq  = {
         timer_interrupt, IRQF_DISABLED, CPU_MASK_NONE, "timer", NULL, NULL
@@ -55,7 +55,7 @@ static inline int set_rtc_mmss(unsigned long nowtime)
  * timer_interrupt() needs to keep up the real-time clock,
  * as well as call the "do_timer()" routine every clocktick
  */
-static irqreturn_t timer_interrupt(int irq, void *dummy, struct pt_regs * regs)
+static irqreturn_t timer_interrupt(int irq, void *dummy)
 {
         /* last time the cmos clock got updated */
         static long last_rtc_update = 0;
@@ -70,8 +70,8 @@ static irqreturn_t timer_interrupt(int irq, void *dummy, struct pt_regs * regs)
         write_seqlock(&xtime_lock);
 
         do_timer(1);
-        update_process_times(user_mode(regs));
-        profile_tick(CPU_PROFILING, regs);
+        update_process_times(user_mode(get_irq_regs()));
+        profile_tick(CPU_PROFILING);
 
         /*
          * If we have an externally synchronized Linux clock, then update
diff --git a/arch/i386/defconfig b/arch/i386/defconfig
index ee2d79bd8af7..60c0c02574f0 100644
--- a/arch/i386/defconfig
+++ b/arch/i386/defconfig
@@ -1,7 +1,7 @@
 #
 # Automatically generated make config: don't edit
-# Linux kernel version: 2.6.18-git7
-# Wed Sep 27 21:53:10 2006
+# Linux kernel version: 2.6.19-rc1
+# Thu Oct  5 13:04:53 2006
 #
 CONFIG_X86_32=y
 CONFIG_GENERIC_TIME=y
@@ -31,9 +31,11 @@ CONFIG_LOCALVERSION=""
 CONFIG_LOCALVERSION_AUTO=y
 CONFIG_SWAP=y
 CONFIG_SYSVIPC=y
+# CONFIG_IPC_NS is not set
 CONFIG_POSIX_MQUEUE=y
 # CONFIG_BSD_PROCESS_ACCT is not set
 # CONFIG_TASKSTATS is not set
+# CONFIG_UTS_NS is not set
 # CONFIG_AUDIT is not set
 CONFIG_IKCONFIG=y
 CONFIG_IKCONFIG_PROC=y
@@ -41,9 +43,10 @@ CONFIG_IKCONFIG_PROC=y
 # CONFIG_RELAY is not set
 CONFIG_INITRAMFS_SOURCE=""
 CONFIG_CC_OPTIMIZE_FOR_SIZE=y
+CONFIG_SYSCTL=y
 # CONFIG_EMBEDDED is not set
 CONFIG_UID16=y
-CONFIG_SYSCTL=y
+# CONFIG_SYSCTL_SYSCALL is not set
 CONFIG_KALLSYMS=y
 CONFIG_KALLSYMS_ALL=y
 # CONFIG_KALLSYMS_EXTRA_PASS is not set
@@ -76,6 +79,7 @@ CONFIG_STOP_MACHINE=y
 #
 # Block layer
 #
+CONFIG_BLOCK=y
 CONFIG_LBD=y
 # CONFIG_BLK_DEV_IO_TRACE is not set
 # CONFIG_LSF is not set
@@ -163,6 +167,7 @@ CONFIG_VM86=y
 # CONFIG_I8K is not set
 # CONFIG_X86_REBOOTFIXUPS is not set
 CONFIG_MICROCODE=y
+CONFIG_MICROCODE_OLD_INTERFACE=y
 CONFIG_X86_MSR=y
 CONFIG_X86_CPUID=y
 
@@ -177,6 +182,7 @@ CONFIG_HIGHMEM4G=y
 # CONFIG_HIGHMEM64G is not set
 CONFIG_PAGE_OFFSET=0xC0000000
 CONFIG_HIGHMEM=y
+CONFIG_ARCH_POPULATES_NODE_MAP=y
 CONFIG_SELECT_MEMORY_MODEL=y
 CONFIG_FLATMEM_MANUAL=y
 # CONFIG_DISCONTIGMEM_MANUAL is not set
@@ -295,6 +301,7 @@ CONFIG_PCI_MMCONFIG=y
 CONFIG_PCI_MSI=y
 # CONFIG_PCI_MULTITHREAD_PROBE is not set
 # CONFIG_PCI_DEBUG is not set
+# CONFIG_HT_IRQ is not set
 CONFIG_ISA_DMA_API=y
 # CONFIG_ISA is not set
 # CONFIG_MCA is not set
@@ -354,6 +361,7 @@ CONFIG_IP_PNP_DHCP=y
 # CONFIG_INET_TUNNEL is not set
 CONFIG_INET_XFRM_MODE_TRANSPORT=y
 CONFIG_INET_XFRM_MODE_TUNNEL=y
+# CONFIG_INET_XFRM_MODE_BEET is not set
 CONFIG_INET_DIAG=y
 CONFIG_INET_TCP_DIAG=y
 # CONFIG_TCP_CONG_ADVANCED is not set
@@ -370,6 +378,7 @@ CONFIG_IPV6=y
 # CONFIG_INET6_TUNNEL is not set
 CONFIG_INET6_XFRM_MODE_TRANSPORT=y
 CONFIG_INET6_XFRM_MODE_TUNNEL=y
+# CONFIG_INET6_XFRM_MODE_BEET is not set
 # CONFIG_INET6_XFRM_MODE_ROUTEOPTIMIZATION is not set
 # CONFIG_IPV6_TUNNEL is not set
 # CONFIG_IPV6_SUBTREES is not set
@@ -519,6 +528,7 @@ CONFIG_BLK_DEV_AMD74XX=y
 # CONFIG_BLK_DEV_CS5535 is not set
 # CONFIG_BLK_DEV_HPT34X is not set
 # CONFIG_BLK_DEV_HPT366 is not set
+# CONFIG_BLK_DEV_JMICRON is not set
 # CONFIG_BLK_DEV_SC1200 is not set
 CONFIG_BLK_DEV_PIIX=y
 # CONFIG_BLK_DEV_IT821X is not set
@@ -615,6 +625,7 @@ CONFIG_AIC79XX_DEBUG_MASK=0
 # CONFIG_SCSI_IPR is not set
 # CONFIG_SCSI_QLOGIC_1280 is not set
 # CONFIG_SCSI_QLA_FC is not set
+# CONFIG_SCSI_QLA_ISCSI is not set
 # CONFIG_SCSI_LPFC is not set
 # CONFIG_SCSI_DC395x is not set
 # CONFIG_SCSI_DC390T is not set
@@ -658,7 +669,6 @@ CONFIG_SATA_INTEL_COMBINED=y
 # CONFIG_PATA_HPT3X3 is not set
 # CONFIG_PATA_IT821X is not set
 # CONFIG_PATA_JMICRON is not set
-# CONFIG_PATA_LEGACY is not set
 # CONFIG_PATA_TRIFLEX is not set
 # CONFIG_PATA_MPIIX is not set
 # CONFIG_PATA_OLDPIIX is not set
@@ -667,7 +677,6 @@ CONFIG_SATA_INTEL_COMBINED=y
 # CONFIG_PATA_OPTI is not set
 # CONFIG_PATA_OPTIDMA is not set
 # CONFIG_PATA_PDC_OLD is not set
-# CONFIG_PATA_QDI is not set
 # CONFIG_PATA_RADISYS is not set
 # CONFIG_PATA_RZ1000 is not set
 # CONFIG_PATA_SC1200 is not set
@@ -684,6 +693,7 @@ CONFIG_SATA_INTEL_COMBINED=y
 CONFIG_MD=y
 # CONFIG_BLK_DEV_MD is not set
 CONFIG_BLK_DEV_DM=y
+# CONFIG_DM_DEBUG is not set
 # CONFIG_DM_CRYPT is not set
 # CONFIG_DM_SNAPSHOT is not set
 # CONFIG_DM_MIRROR is not set
@@ -874,6 +884,7 @@ CONFIG_NET_POLL_CONTROLLER=y
 # Input device support
 #
 CONFIG_INPUT=y
+# CONFIG_INPUT_FF_MEMLESS is not set
 
 #
 # Userland interfaces
@@ -896,6 +907,7 @@ CONFIG_KEYBOARD_ATKBD=y
 # CONFIG_KEYBOARD_LKKBD is not set
 # CONFIG_KEYBOARD_XTKBD is not set
 # CONFIG_KEYBOARD_NEWTON is not set
+# CONFIG_KEYBOARD_STOWAWAY is not set
 CONFIG_INPUT_MOUSE=y
 CONFIG_MOUSE_PS2=y
 # CONFIG_MOUSE_SERIAL is not set
@@ -1023,12 +1035,12 @@ CONFIG_HANGCHECK_TIMER=y
 # Misc devices
 #
 # CONFIG_IBM_ASM is not set
+# CONFIG_TIFM_CORE is not set
 
 #
 # Multimedia devices
 #
 # CONFIG_VIDEO_DEV is not set
-CONFIG_VIDEO_V4L2=y
 
 #
 # Digital Video Broadcasting Devices
@@ -1134,6 +1146,7 @@ CONFIG_USB_STORAGE=y
 # CONFIG_USB_STORAGE_SDDR55 is not set
 # CONFIG_USB_STORAGE_JUMPSHOT is not set
 # CONFIG_USB_STORAGE_ALAUDA is not set
+# CONFIG_USB_STORAGE_KARMA is not set
 # CONFIG_USB_LIBUSUAL is not set
 
 #
@@ -1156,6 +1169,7 @@ CONFIG_USB_HIDINPUT=y
 # CONFIG_USB_ATI_REMOTE2 is not set
 # CONFIG_USB_KEYSPAN_REMOTE is not set
 # CONFIG_USB_APPLETOUCH is not set
+# CONFIG_USB_TRANCEVIBRATOR is not set
 
 #
 # USB Imaging devices
@@ -1187,6 +1201,7 @@ CONFIG_USB_MON=y
 #
 # CONFIG_USB_EMI62 is not set
 # CONFIG_USB_EMI26 is not set
+# CONFIG_USB_ADUTUX is not set
 # CONFIG_USB_AUERSWALD is not set
 # CONFIG_USB_RIO500 is not set
 # CONFIG_USB_LEGOTOWER is not set
@@ -1194,9 +1209,9 @@ CONFIG_USB_MON=y
 # CONFIG_USB_LED is not set
 # CONFIG_USB_CYPRESS_CY7C63 is not set
 # CONFIG_USB_CYTHERM is not set
-# CONFIG_USB_PHIDGETKIT is not set
-# CONFIG_USB_PHIDGETSERVO is not set
+# CONFIG_USB_PHIDGET is not set
 # CONFIG_USB_IDMOUSE is not set
+# CONFIG_USB_FTDI_ELAN is not set
 # CONFIG_USB_APPLEDISPLAY is not set
 # CONFIG_USB_SISUSBVGA is not set
 # CONFIG_USB_LD is not set
@@ -1281,6 +1296,7 @@ CONFIG_REISERFS_FS_POSIX_ACL=y
 # CONFIG_JFS_FS is not set
 CONFIG_FS_POSIX_ACL=y
 # CONFIG_XFS_FS is not set
+# CONFIG_GFS2_FS is not set
 # CONFIG_OCFS2_FS is not set
 # CONFIG_MINIX_FS is not set
 # CONFIG_ROMFS_FS is not set
@@ -1315,8 +1331,10 @@ CONFIG_FAT_DEFAULT_IOCHARSET="iso8859-1"
 #
 CONFIG_PROC_FS=y
 CONFIG_PROC_KCORE=y
+CONFIG_PROC_SYSCTL=y
 CONFIG_SYSFS=y
 CONFIG_TMPFS=y
+CONFIG_TMPFS_POSIX_ACL=y
 CONFIG_HUGETLBFS=y
 CONFIG_HUGETLB_PAGE=y
 CONFIG_RAMFS=y
@@ -1366,6 +1384,7 @@ CONFIG_SUNRPC=y
 # CONFIG_CODA_FS is not set
 # CONFIG_AFS_FS is not set
 # CONFIG_9P_FS is not set
+CONFIG_GENERIC_ACL=y
 
 #
 # Partition Types
@@ -1418,6 +1437,10 @@ CONFIG_NLS_ISO8859_15=y
 CONFIG_NLS_UTF8=y
 
 #
+# Distributed Lock Manager
+#
+
+#
 # Instrumentation Support
 #
 CONFIG_PROFILING=y
@@ -1452,11 +1475,13 @@ CONFIG_DEBUG_BUGVERBOSE=y
 # CONFIG_DEBUG_INFO is not set
 # CONFIG_DEBUG_FS is not set
 # CONFIG_DEBUG_VM is not set
+# CONFIG_DEBUG_LIST is not set
 # CONFIG_FRAME_POINTER is not set
 CONFIG_UNWIND_INFO=y
 CONFIG_STACK_UNWIND=y
 # CONFIG_FORCED_INLINING is not set
 # CONFIG_RCU_TORTURE_TEST is not set
+# CONFIG_LKDTM is not set
 CONFIG_EARLY_PRINTK=y
 CONFIG_DEBUG_STACKOVERFLOW=y
 # CONFIG_DEBUG_STACK_USAGE is not set
diff --git a/arch/i386/kernel/apic.c b/arch/i386/kernel/apic.c
index 90faae5c5d30..2fd4b7d927c2 100644
--- a/arch/i386/kernel/apic.c
+++ b/arch/i386/kernel/apic.c
@@ -1193,11 +1193,11 @@ EXPORT_SYMBOL(switch_ipi_to_APIC_timer);
  * value into /proc/profile.
  */
 
-inline void smp_local_timer_interrupt(struct pt_regs * regs)
+inline void smp_local_timer_interrupt(void)
 {
-        profile_tick(CPU_PROFILING, regs);
+        profile_tick(CPU_PROFILING);
 #ifdef CONFIG_SMP
-        update_process_times(user_mode_vm(regs));
+        update_process_times(user_mode_vm(get_irq_regs()));
 #endif
 
         /*
@@ -1223,6 +1223,7 @@ inline void smp_local_timer_interrupt(struct pt_regs * regs)
 
 fastcall void smp_apic_timer_interrupt(struct pt_regs *regs)
 {
+        struct pt_regs *old_regs = set_irq_regs(regs);
         int cpu = smp_processor_id();
 
         /*
@@ -1241,12 +1242,13 @@ fastcall void smp_apic_timer_interrupt(struct pt_regs *regs)
          * interrupt lock, which is the WrongThing (tm) to do.
          */
         irq_enter();
-        smp_local_timer_interrupt(regs);
+        smp_local_timer_interrupt();
         irq_exit();
+        set_irq_regs(old_regs);
 }
 
 #ifndef CONFIG_SMP
-static void up_apic_timer_interrupt_call(struct pt_regs *regs)
+static void up_apic_timer_interrupt_call(void)
 {
         int cpu = smp_processor_id();
 
@@ -1255,11 +1257,11 @@ static void up_apic_timer_interrupt_call(struct pt_regs *regs)
          */
         per_cpu(irq_stat, cpu).apic_timer_irqs++;
 
-        smp_local_timer_interrupt(regs);
+        smp_local_timer_interrupt();
 }
 #endif
 
-void smp_send_timer_broadcast_ipi(struct pt_regs *regs)
+void smp_send_timer_broadcast_ipi(void)
 {
         cpumask_t mask;
 
@@ -1272,7 +1274,7 @@ void smp_send_timer_broadcast_ipi(struct pt_regs *regs)
                  * We can directly call the apic timer interrupt handler
                  * in UP case. Minus all irq related functions
                  */
-                up_apic_timer_interrupt_call(regs);
+                up_apic_timer_interrupt_call();
 #endif
         }
 }
diff --git a/arch/i386/kernel/i8259.c b/arch/i386/kernel/i8259.c
index d07ed31f11e3..d53eafb6daa7 100644
--- a/arch/i386/kernel/i8259.c
+++ b/arch/i386/kernel/i8259.c
@@ -335,13 +335,13 @@ void init_8259A(int auto_eoi)
  */
  
 
-static irqreturn_t math_error_irq(int cpl, void *dev_id, struct pt_regs *regs)
+static irqreturn_t math_error_irq(int cpl, void *dev_id)
 {
         extern void math_error(void __user *);
         outb(0,0xF0);
         if (ignore_fpu_irq || !boot_cpu_data.hard_math)
                 return IRQ_NONE;
-        math_error((void __user *)regs->eip);
+        math_error((void __user *)get_irq_regs()->eip);
         return IRQ_HANDLED;
 }
 
diff --git a/arch/i386/kernel/io_apic.c b/arch/i386/kernel/io_apic.c
index b7287fb499f3..cd082c36ca03 100644
--- a/arch/i386/kernel/io_apic.c
+++ b/arch/i386/kernel/io_apic.c
@@ -1184,8 +1184,8 @@ static int __assign_irq_vector(int irq)
 
         BUG_ON((unsigned)irq >= NR_IRQ_VECTORS);
 
-        if (IO_APIC_VECTOR(irq) > 0)
-                return IO_APIC_VECTOR(irq);
+        if (irq_vector[irq] > 0)
+                return irq_vector[irq];
 
         current_vector += 8;
         if (current_vector == SYSCALL_VECTOR)
@@ -1199,7 +1199,7 @@ static int __assign_irq_vector(int irq)
         }
 
         vector = current_vector;
-        IO_APIC_VECTOR(irq) = vector;
+        irq_vector[irq] = vector;
 
         return vector;
 }
@@ -1967,7 +1967,7 @@ static void ack_ioapic_quirk_irq(unsigned int irq)
  * operation to prevent an edge-triggered interrupt escaping meanwhile.
  * The idea is from Manfred Spraul.  --macro
  */
-        i = IO_APIC_VECTOR(irq);
+        i = irq_vector[irq];
 
         v = apic_read(APIC_TMR + ((i & ~0x1f) >> 1));
 
@@ -1984,7 +1984,7 @@ static void ack_ioapic_quirk_irq(unsigned int irq)
 
 static int ioapic_retrigger_irq(unsigned int irq)
 {
-        send_IPI_self(IO_APIC_VECTOR(irq));
+        send_IPI_self(irq_vector[irq]);
 
         return 1;
 }
@@ -2020,7 +2020,7 @@ static inline void init_IO_APIC_traps(void)
          */
         for (irq = 0; irq < NR_IRQS ; irq++) {
                 int tmp = irq;
-                if (IO_APIC_IRQ(tmp) && !IO_APIC_VECTOR(tmp)) {
+                if (IO_APIC_IRQ(tmp) && !irq_vector[tmp]) {
                         /*
                          * Hmm.. We don't have an entry for this,
                          * so default to an old-fashioned 8259
diff --git a/arch/i386/kernel/irq.c b/arch/i386/kernel/irq.c
index 3dd2e180151b..8cfc7dbec7b9 100644
--- a/arch/i386/kernel/irq.c
+++ b/arch/i386/kernel/irq.c
@@ -53,6 +53,7 @@ static union irq_ctx *softirq_ctx[NR_CPUS] __read_mostly;
  */
 fastcall unsigned int do_IRQ(struct pt_regs *regs)
 {       
+        struct pt_regs *old_regs;
         /* high bit used in ret_from_ code */
         int irq = ~regs->orig_eax;
         struct irq_desc *desc = irq_desc + irq;
@@ -67,6 +68,7 @@ fastcall unsigned int do_IRQ(struct pt_regs *regs)
                 BUG();
         }
 
+        old_regs = set_irq_regs(regs);
         irq_enter();
 #ifdef CONFIG_DEBUG_STACKOVERFLOW
         /* Debugging check for stack overflow: is there less than 1KB free? */
@@ -95,7 +97,7 @@ fastcall unsigned int do_IRQ(struct pt_regs *regs)
          * current stack (which is the irq stack already after all)
          */
         if (curctx != irqctx) {
-                int arg1, arg2, arg3, ebx;
+                int arg1, arg2, ebx;
 
                 /* build the stack frame on the IRQ stack */
                 isp = (u32*) ((char*)irqctx + sizeof(*irqctx));
@@ -114,17 +116,17 @@ fastcall unsigned int do_IRQ(struct pt_regs *regs)
                         "       xchgl  %%ebx,%%esp      \n"
                         "       call   *%%edi           \n"
                         "       movl   %%ebx,%%esp      \n"
-                        : "=a" (arg1), "=d" (arg2), "=c" (arg3), "=b" (ebx)
-                        :  "0" (irq),   "1" (desc),  "2" (regs),  "3" (isp),
+                        : "=a" (arg1), "=d" (arg2), "=b" (ebx)
+                        :  "0" (irq),   "1" (desc),  "2" (isp),
                            "D" (desc->handle_irq)
                         : "memory", "cc"
                 );
         } else
 #endif
-                desc->handle_irq(irq, desc, regs);
+                desc->handle_irq(irq, desc);
 
         irq_exit();
-
+        set_irq_regs(old_regs);
         return 1;
 }
 
diff --git a/arch/i386/kernel/process.c b/arch/i386/kernel/process.c
index dad02a960e03..b0a07801d9df 100644
--- a/arch/i386/kernel/process.c
+++ b/arch/i386/kernel/process.c
@@ -328,6 +328,7 @@ extern void kernel_thread_helper(void);
 int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags)
 {
         struct pt_regs regs;
+        int err;
 
         memset(&regs, 0, sizeof(regs));
 
@@ -342,7 +343,10 @@ int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags)
         regs.eflags = X86_EFLAGS_IF | X86_EFLAGS_SF | X86_EFLAGS_PF | 0x2;
 
         /* Ok, create the new process.. */
-        return do_fork(flags | CLONE_VM | CLONE_UNTRACED, 0, &regs, 0, NULL, NULL);
+        err = do_fork(flags | CLONE_VM | CLONE_UNTRACED, 0, &regs, 0, NULL, NULL);
+        if (err == 0) /* terminate kernel stack */
+                task_pt_regs(current)->eip = 0;
+        return err;
 }
 EXPORT_SYMBOL(kernel_thread);
 
diff --git a/arch/i386/kernel/smp.c b/arch/i386/kernel/smp.c
index 1b080ab8a49f..31e5c6573aae 100644
--- a/arch/i386/kernel/smp.c
+++ b/arch/i386/kernel/smp.c
@@ -321,6 +321,7 @@ static inline void leave_mm (unsigned long cpu)
 
 fastcall void smp_invalidate_interrupt(struct pt_regs *regs)
 {
+        struct pt_regs *old_regs = set_irq_regs(regs);
         unsigned long cpu;
 
         cpu = get_cpu();
@@ -351,6 +352,7 @@ fastcall void smp_invalidate_interrupt(struct pt_regs *regs)
         smp_mb__after_clear_bit();
 out:
         put_cpu_no_resched();
+        set_irq_regs(old_regs);
 }
 
 static void flush_tlb_others(cpumask_t cpumask, struct mm_struct *mm,
@@ -605,11 +607,14 @@ void smp_send_stop(void)
  */
 fastcall void smp_reschedule_interrupt(struct pt_regs *regs)
 {
+        struct pt_regs *old_regs = set_irq_regs(regs);
         ack_APIC_irq();
+        set_irq_regs(old_regs);
 }
 
 fastcall void smp_call_function_interrupt(struct pt_regs *regs)
 {
+        struct pt_regs *old_regs = set_irq_regs(regs);
         void (*func) (void *info) = call_data->func;
         void *info = call_data->info;
         int wait = call_data->wait;
@@ -632,6 +637,7 @@ fastcall void smp_call_function_interrupt(struct pt_regs *regs)
                 mb();
                 atomic_inc(&call_data->finished);
         }
+        set_irq_regs(old_regs);
 }
 
 /*
diff --git a/arch/i386/kernel/time.c b/arch/i386/kernel/time.c
index 58a2d5582419..78af572fd17c 100644
--- a/arch/i386/kernel/time.c
+++ b/arch/i386/kernel/time.c
@@ -161,7 +161,7 @@ EXPORT_SYMBOL(profile_pc);
  * Time Stamp Counter value at the time of the timer interrupt, so that
  * we later on can estimate the time of day more exactly.
  */
-irqreturn_t timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+irqreturn_t timer_interrupt(int irq, void *dev_id)
 {
         /*
          * Here we are in the timer irq handler. We just have irqs locally
@@ -188,7 +188,7 @@ irqreturn_t timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
         }
 #endif
 
-        do_timer_interrupt_hook(regs);
+        do_timer_interrupt_hook();
 
 
         if (MCA_bus) {
@@ -201,15 +201,15 @@ irqreturn_t timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
                 high bit of the PPI port B (0x61).  Note that some PS/2s,
                 notably the 55SX, work fine if this is removed.  */
 
-                irq = inb_p( 0x61 );    /* read the current state */
-                outb_p( irq|0x80, 0x61 );       /* reset the IRQ */
+                u8 irq_v = inb_p( 0x61 );       /* read the current state */
+                outb_p( irq_v|0x80, 0x61 );     /* reset the IRQ */
         }
 
         write_sequnlock(&xtime_lock);
 
 #ifdef CONFIG_X86_LOCAL_APIC
         if (using_apic_timer)
-                smp_send_timer_broadcast_ipi(regs);
+                smp_send_timer_broadcast_ipi();
 #endif
 
         return IRQ_HANDLED;
diff --git a/arch/i386/kernel/time_hpet.c b/arch/i386/kernel/time_hpet.c
index 6bf14a4e995e..1a2a979cf6a3 100644
--- a/arch/i386/kernel/time_hpet.c
+++ b/arch/i386/kernel/time_hpet.c
@@ -441,7 +441,7 @@ int hpet_rtc_dropped_irq(void)
         return 1;
 }
 
-irqreturn_t hpet_rtc_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+irqreturn_t hpet_rtc_interrupt(int irq, void *dev_id)
 {
         struct rtc_time curr_time;
         unsigned long rtc_int_flag = 0;
@@ -480,7 +480,7 @@ irqreturn_t hpet_rtc_interrupt(int irq, void *dev_id, struct pt_regs *regs)
         }
         if (call_rtc_interrupt) {
                 rtc_int_flag |= (RTC_IRQF | (RTC_NUM_INTS << 8));
-                rtc_interrupt(rtc_int_flag, dev_id, regs);
+                rtc_interrupt(rtc_int_flag, dev_id);
         }
         return IRQ_HANDLED;
 }
diff --git a/arch/i386/kernel/vm86.c b/arch/i386/kernel/vm86.c
index 8355d8d87d18..cbcd61d6120b 100644
--- a/arch/i386/kernel/vm86.c
+++ b/arch/i386/kernel/vm86.c
@@ -714,7 +714,7 @@ static int irqbits;
         | (1 << SIGUSR1) | (1 << SIGUSR2) | (1 << SIGIO)  | (1 << SIGURG) \
         | (1 << SIGUNUSED) )
         
-static irqreturn_t irq_handler(int intno, void *dev_id, struct pt_regs * regs)
+static irqreturn_t irq_handler(int intno, void *dev_id)
 {
         int irq_bit;
         unsigned long flags;
diff --git a/arch/i386/lib/semaphore.S b/arch/i386/lib/semaphore.S
index ef6ad9e1a609..c01eb39c0b43 100644
--- a/arch/i386/lib/semaphore.S
+++ b/arch/i386/lib/semaphore.S
@@ -152,6 +152,8 @@ ENTRY(__read_lock_failed)
 
 #endif
 
+#ifdef CONFIG_RWSEM_XCHGADD_ALGORITHM
+
 /* Fix up special calling conventions */
 ENTRY(call_rwsem_down_read_failed)
         CFI_STARTPROC
@@ -214,3 +216,4 @@ ENTRY(call_rwsem_downgrade_wake)
         CFI_ENDPROC
         END(call_rwsem_downgrade_wake)
 
+#endif
diff --git a/arch/i386/mach-visws/visws_apic.c b/arch/i386/mach-visws/visws_apic.c
index 5929f884d79b..07097ed48890 100644
--- a/arch/i386/mach-visws/visws_apic.c
+++ b/arch/i386/mach-visws/visws_apic.c
@@ -191,7 +191,7 @@ static struct hw_interrupt_type piix4_virtual_irq_type = {
  * enable_irq gets the right irq. This 'master' irq is never directly
  * manipulated by any driver.
  */
-static irqreturn_t piix4_master_intr(int irq, void *dev_id, struct pt_regs * regs)
+static irqreturn_t piix4_master_intr(int irq, void *dev_id)
 {
         int realirq;
         irq_desc_t *desc;
@@ -244,7 +244,7 @@ static irqreturn_t piix4_master_intr(int irq, void *dev_id, struct pt_regs * reg
         kstat_cpu(smp_processor_id()).irqs[realirq]++;
 
         if (likely(desc->action != NULL))
-                handle_IRQ_event(realirq, regs, desc->action);
+                handle_IRQ_event(realirq, desc->action);
 
         if (!(desc->status & IRQ_DISABLED))
                 enable_8259A_irq(realirq);
diff --git a/arch/i386/mach-voyager/voyager_basic.c b/arch/i386/mach-voyager/voyager_basic.c
index 80b7f2fc4f46..c639d30d8bdc 100644
--- a/arch/i386/mach-voyager/voyager_basic.c
+++ b/arch/i386/mach-voyager/voyager_basic.c
@@ -87,7 +87,7 @@ voyager_detect(struct voyager_bios_info *bios)
 }
 
 void
-voyager_system_interrupt(int cpl, void *dev_id, struct pt_regs *regs)
+voyager_system_interrupt(int cpl, void *dev_id)
 {
         printk("Voyager: detected system interrupt\n");
 }
diff --git a/arch/i386/mach-voyager/voyager_smp.c b/arch/i386/mach-voyager/voyager_smp.c
index 856c73fcb7e7..d42422fc4af3 100644
--- a/arch/i386/mach-voyager/voyager_smp.c
+++ b/arch/i386/mach-voyager/voyager_smp.c
@@ -126,10 +126,10 @@ send_QIC_CPI(__u32 cpuset, __u8 cpi)
 }
 
 static inline void
-wrapper_smp_local_timer_interrupt(struct pt_regs *regs)
+wrapper_smp_local_timer_interrupt(void)
 {
         irq_enter();
-        smp_local_timer_interrupt(regs);
+        smp_local_timer_interrupt();
         irq_exit();
 }
 
@@ -786,7 +786,7 @@ fastcall void
 smp_vic_sys_interrupt(struct pt_regs *regs)
 {
         ack_CPI(VIC_SYS_INT);
-        printk("Voyager SYSTEM INTERRUPT\n");
+        printk("Voyager SYSTEM INTERRUPT\n");   
 }
 
 /* Handle a voyager CMN_INT; These interrupts occur either because of
@@ -1135,7 +1135,9 @@ EXPORT_SYMBOL(smp_call_function);
 fastcall void 
 smp_apic_timer_interrupt(struct pt_regs *regs)
 {
-        wrapper_smp_local_timer_interrupt(regs);
+        struct pt_regs *old_regs = set_irq_regs(regs);
+        wrapper_smp_local_timer_interrupt();
+        set_irq_regs(old_regs);
 }
 
 /* All of the QUAD interrupt GATES */
@@ -1143,7 +1145,9 @@ fastcall void
 smp_qic_timer_interrupt(struct pt_regs *regs)
 {
         ack_QIC_CPI(QIC_TIMER_CPI);
-        wrapper_smp_local_timer_interrupt(regs);
+        struct pt_regs *old_regs = set_irq_regs(regs);
+        wrapper_smp_local_timer_interrupt(void);
+        set_irq_regs(old_regs);
 }
 
 fastcall void
@@ -1177,6 +1181,7 @@ smp_qic_call_function_interrupt(struct pt_regs *regs)
 fastcall void
 smp_vic_cpi_interrupt(struct pt_regs *regs)
 {
+        struct pt_regs *old_regs = set_irq_regs(regs);
         __u8 cpu = smp_processor_id();
 
         if(is_cpu_quad())
@@ -1185,7 +1190,7 @@ smp_vic_cpi_interrupt(struct pt_regs *regs)
                 ack_VIC_CPI(VIC_CPI_LEVEL0);
 
         if(test_and_clear_bit(VIC_TIMER_CPI, &vic_cpi_mailbox[cpu]))
-                wrapper_smp_local_timer_interrupt(regs);
+                wrapper_smp_local_timer_interrupt();
         if(test_and_clear_bit(VIC_INVALIDATE_CPI, &vic_cpi_mailbox[cpu]))
                 smp_invalidate_interrupt();
         if(test_and_clear_bit(VIC_RESCHEDULE_CPI, &vic_cpi_mailbox[cpu]))
@@ -1194,6 +1199,7 @@ smp_vic_cpi_interrupt(struct pt_regs *regs)
                 smp_enable_irq_interrupt();
         if(test_and_clear_bit(VIC_CALL_FUNCTION_CPI, &vic_cpi_mailbox[cpu]))
                 smp_call_function_interrupt();
+        set_irq_regs(old_regs);
 }
 
 static void
@@ -1266,8 +1272,10 @@ smp_send_stop(void)
 void
 smp_vic_timer_interrupt(struct pt_regs *regs)
 {
+        struct pt_regs *old_regs = set_irq_regs(regs);
         send_CPI_allbutself(VIC_TIMER_CPI);
-        smp_local_timer_interrupt(regs);
+        smp_local_timer_interrupt();
+        set_irq_regs(old_regs);
 }
 
 /* local (per CPU) timer interrupt.  It does both profiling and
@@ -1279,12 +1287,12 @@ smp_vic_timer_interrupt(struct pt_regs *regs)
  * value into /proc/profile.
  */
 void
-smp_local_timer_interrupt(struct pt_regs * regs)
+smp_local_timer_interrupt(void)
 {
         int cpu = smp_processor_id();
         long weight;
 
-        profile_tick(CPU_PROFILING, regs);
+        profile_tick(CPU_PROFILING);
         if (--per_cpu(prof_counter, cpu) <= 0) {
                 /*
                  * The multiplier may have changed since the last time we got
@@ -1302,7 +1310,7 @@ smp_local_timer_interrupt(struct pt_regs * regs)
                                                 per_cpu(prof_counter, cpu);
                 }
 
-                update_process_times(user_mode_vm(regs));
+                update_process_times(user_mode_vm(irq_regs));
         }
 
         if( ((1<<cpu) & voyager_extended_vic_processors) == 0)
diff --git a/arch/i386/pci/direct.c b/arch/i386/pci/direct.c
index 5acf0b4743cf..431c9a51b157 100644
--- a/arch/i386/pci/direct.c
+++ b/arch/i386/pci/direct.c
@@ -256,6 +256,8 @@ static int __init pci_check_type2(void)
 
 void __init pci_direct_init(int type)
 {
+        if (type == 0)
+                return;
         printk(KERN_INFO "PCI: Using configuration type %d\n", type);
         if (type == 1)
                 raw_pci_ops = &pci_direct_conf1;
diff --git a/arch/i386/pci/init.c b/arch/i386/pci/init.c
index d028e1b05c36..b21b6da8ab1d 100644
--- a/arch/i386/pci/init.c
+++ b/arch/i386/pci/init.c
@@ -28,6 +28,10 @@ static __init int pci_access_init(void)
 #ifdef CONFIG_PCI_DIRECT
         pci_direct_init(type);
 #endif
+        if (!raw_pci_ops)
+                printk(KERN_ERR
+                "PCI: Fatal: No config space access function found\n");
+
         return 0;
 }
 arch_initcall(pci_access_init);
diff --git a/arch/i386/pci/irq.c b/arch/i386/pci/irq.c
index 47f02af74be3..dbc4aae91959 100644
--- a/arch/i386/pci/irq.c
+++ b/arch/i386/pci/irq.c
@@ -1141,10 +1141,6 @@ static int pirq_enable_irq(struct pci_dev *dev)
                         }
                         dev = temp_dev;
                         if (irq >= 0) {
-#ifdef CONFIG_PCI_MSI
-                                if (!platform_legacy_irq(irq))
-                                        irq = IO_APIC_VECTOR(irq);
-#endif
                                 printk(KERN_INFO "PCI->APIC IRQ transform: %s[%c] -> IRQ %d\n",
                                         pci_name(dev), 'A' + pin, irq);
                                 dev->irq = irq;
diff --git a/arch/ia64/hp/sim/simeth.c b/arch/ia64/hp/sim/simeth.c
index e1a1b11473e2..424e9257c9a0 100644
--- a/arch/ia64/hp/sim/simeth.c
+++ b/arch/ia64/hp/sim/simeth.c
@@ -54,7 +54,7 @@ static int simeth_close(struct net_device *dev);
 static int simeth_tx(struct sk_buff *skb, struct net_device *dev);
 static int simeth_rx(struct net_device *dev);
 static struct net_device_stats *simeth_get_stats(struct net_device *dev);
-static irqreturn_t simeth_interrupt(int irq, void *dev_id, struct pt_regs * regs);
+static irqreturn_t simeth_interrupt(int irq, void *dev_id);
 static void set_multicast_list(struct net_device *dev);
 static int simeth_device_event(struct notifier_block *this,unsigned long event, void *ptr);
 
@@ -87,7 +87,7 @@ static int simeth_debug;		/* set to 1 to get debug information */
  */
 static struct notifier_block simeth_dev_notifier = {
         simeth_device_event,
-        0
+        NULL
 };
 
 
@@ -497,7 +497,7 @@ simeth_rx(struct net_device *dev)
  * Interrupt handler (Yes, we can do it too !!!)
  */
 static irqreturn_t
-simeth_interrupt(int irq, void *dev_id, struct pt_regs * regs)
+simeth_interrupt(int irq, void *dev_id)
 {
         struct net_device *dev = dev_id;
 
diff --git a/arch/ia64/hp/sim/simscsi.c b/arch/ia64/hp/sim/simscsi.c
index 8f0a16a79a67..bb87682bbb1b 100644
--- a/arch/ia64/hp/sim/simscsi.c
+++ b/arch/ia64/hp/sim/simscsi.c
@@ -103,7 +103,7 @@ simscsi_interrupt (unsigned long val)
 
         while ((sc = queue[rd].sc) != 0) {
                 atomic_dec(&num_reqs);
-                queue[rd].sc = 0;
+                queue[rd].sc = NULL;
                 if (DBG)
                         printk("simscsi_interrupt: done with %ld\n", sc->serial_number);
                 (*sc->scsi_done)(sc);
diff --git a/arch/ia64/hp/sim/simserial.c b/arch/ia64/hp/sim/simserial.c
index 246eb3d3757a..caab986af70c 100644
--- a/arch/ia64/hp/sim/simserial.c
+++ b/arch/ia64/hp/sim/simserial.c
@@ -92,7 +92,7 @@ static struct serial_uart_config uart_config[] = {
         { "ST16650V2", 32, UART_CLEAR_FIFO | UART_USE_FIFO |
                   UART_STARTECH },
         { "TI16750", 64, UART_CLEAR_FIFO | UART_USE_FIFO},
-        { 0, 0}
+        { NULL, 0}
 };
 
 struct tty_driver *hp_simserial_driver;
@@ -130,7 +130,7 @@ static void rs_start(struct tty_struct *tty)
 #endif
 }
 
-static  void receive_chars(struct tty_struct *tty, struct pt_regs *regs)
+static  void receive_chars(struct tty_struct *tty)
 {
         unsigned char ch;
         static unsigned char seen_esc = 0;
@@ -152,7 +152,7 @@ static  void receive_chars(struct tty_struct *tty, struct pt_regs *regs)
                                                 ch = ia64_ssc(0, 0, 0, 0,
                                                               SSC_GETCHAR);
                                         while (!ch);
-                                        handle_sysrq(ch, regs, NULL);
+                                        handle_sysrq(ch, NULL);
                                 }
 #endif
                                 seen_esc = 0;
@@ -170,7 +170,7 @@ static  void receive_chars(struct tty_struct *tty, struct pt_regs *regs)
 /*
  * This is the serial driver's interrupt routine for a single port
  */
-static irqreturn_t rs_interrupt_single(int irq, void *dev_id, struct pt_regs * regs)
+static irqreturn_t rs_interrupt_single(int irq, void *dev_id)
 {
         struct async_struct * info;
 
@@ -187,7 +187,7 @@ static irqreturn_t rs_interrupt_single(int irq, void *dev_id, struct pt_regs * r
          * pretty simple in our case, because we only get interrupts
          * on inbound traffic
          */
-        receive_chars(info->tty, regs);
+        receive_chars(info->tty);
         return IRQ_HANDLED;
 }
 
@@ -555,7 +555,7 @@ static void shutdown(struct async_struct * info)
 
                 if (info->xmit.buf) {
                         free_page((unsigned long) info->xmit.buf);
-                        info->xmit.buf = 0;
+                        info->xmit.buf = NULL;
                 }
 
                 if (info->tty) set_bit(TTY_IO_ERROR, &info->tty->flags);
@@ -628,7 +628,7 @@ static void rs_close(struct tty_struct *tty, struct file * filp)
         if (tty->driver->flush_buffer) tty->driver->flush_buffer(tty);
         if (tty->ldisc.flush_buffer) tty->ldisc.flush_buffer(tty);
         info->event = 0;
-        info->tty = 0;
+        info->tty = NULL;
         if (info->blocked_open) {
                 if (info->close_delay)
                         schedule_timeout_interruptible(info->close_delay);
@@ -668,7 +668,7 @@ static void rs_hangup(struct tty_struct *tty)
         info->event = 0;
         state->count = 0;
         info->flags &= ~ASYNC_NORMAL_ACTIVE;
-        info->tty = 0;
+        info->tty = NULL;
         wake_up_interruptible(&info->open_wait);
 }
 
@@ -714,7 +714,7 @@ startup(struct async_struct *info)
 {
         unsigned long flags;
         int     retval=0;
-        irqreturn_t (*handler)(int, void *, struct pt_regs *);
+        irq_handler_t handler;
         struct serial_state *state= info->state;
         unsigned long page;
 
@@ -769,7 +769,7 @@ startup(struct async_struct *info)
         /*
          * Insert serial port into IRQ chain.
          */
-        info->prev_port = 0;
+        info->prev_port = NULL;
         info->next_port = IRQ_ports[state->irq];
         if (info->next_port)
                 info->next_port->prev_port = info;
diff --git a/arch/ia64/kernel/irq.c b/arch/ia64/kernel/irq.c
index 7852382de2fa..f07c0864b0b4 100644
--- a/arch/ia64/kernel/irq.c
+++ b/arch/ia64/kernel/irq.c
@@ -194,8 +194,11 @@ void fixup_irqs(void)
          */
         for (irq=0; irq < NR_IRQS; irq++) {
                 if (vectors_in_migration[irq]) {
+                        struct pt_regs *old_regs = set_irq_regs(NULL);
+
                         vectors_in_migration[irq]=0;
-                        __do_IRQ(irq, NULL);
+                        __do_IRQ(irq);
+                        set_irq_regs(old_regs);
                 }
         }
 
diff --git a/arch/ia64/kernel/irq_ia64.c b/arch/ia64/kernel/irq_ia64.c
index ab2d19c3661f..68339dd0c9e2 100644
--- a/arch/ia64/kernel/irq_ia64.c
+++ b/arch/ia64/kernel/irq_ia64.c
@@ -138,6 +138,7 @@ void destroy_irq(unsigned int irq)
 void
 ia64_handle_irq (ia64_vector vector, struct pt_regs *regs)
 {
+        struct pt_regs *old_regs = set_irq_regs(regs);
         unsigned long saved_tpr;
 
 #if IRQ_DEBUG
@@ -183,7 +184,7 @@ ia64_handle_irq (ia64_vector vector, struct pt_regs *regs)
                         ia64_setreg(_IA64_REG_CR_TPR, vector);
                         ia64_srlz_d();
 
-                        __do_IRQ(local_vector_to_irq(vector), regs);
+                        __do_IRQ(local_vector_to_irq(vector));
 
                         /*
                          * Disable interrupts and send EOI:
@@ -200,6 +201,7 @@ ia64_handle_irq (ia64_vector vector, struct pt_regs *regs)
          * come through until ia64_eoi() has been done.
          */
         irq_exit();
+        set_irq_regs(old_regs);
 }
 
 #ifdef CONFIG_HOTPLUG_CPU
@@ -224,6 +226,8 @@ void ia64_process_pending_intr(void)
           */
         while (vector != IA64_SPURIOUS_INT_VECTOR) {
                 if (!IS_RESCHEDULE(vector)) {
+                        struct pt_regs *old_regs = set_irq_regs(NULL);
+
                         ia64_setreg(_IA64_REG_CR_TPR, vector);
                         ia64_srlz_d();
 
@@ -234,7 +238,8 @@ void ia64_process_pending_intr(void)
                          * Probably could shared code.
                          */
                         vectors_in_migration[local_vector_to_irq(vector)]=0;
-                        __do_IRQ(local_vector_to_irq(vector), NULL);
+                        __do_IRQ(local_vector_to_irq(vector));
+                        set_irq_regs(old_regs);
 
                         /*
                          * Disable interrupts and send EOI
@@ -251,7 +256,7 @@ void ia64_process_pending_intr(void)
 
 
 #ifdef CONFIG_SMP
-extern irqreturn_t handle_IPI (int irq, void *dev_id, struct pt_regs *regs);
+extern irqreturn_t handle_IPI (int irq, void *dev_id);
 
 static struct irqaction ipi_irqaction = {
         .handler =      handle_IPI,
diff --git a/arch/ia64/kernel/machvec.c b/arch/ia64/kernel/machvec.c
index d4a546aa5048..9620822270a6 100644
--- a/arch/ia64/kernel/machvec.c
+++ b/arch/ia64/kernel/machvec.c
@@ -60,7 +60,7 @@ machvec_setup (char **arg)
 EXPORT_SYMBOL(machvec_setup);
 
 void
-machvec_timer_interrupt (int irq, void *dev_id, struct pt_regs *regs)
+machvec_timer_interrupt (int irq, void *dev_id)
 {
 }
 EXPORT_SYMBOL(machvec_timer_interrupt);
diff --git a/arch/ia64/kernel/mca.c b/arch/ia64/kernel/mca.c
index 663230183254..7cfa63a98cb3 100644
--- a/arch/ia64/kernel/mca.c
+++ b/arch/ia64/kernel/mca.c
@@ -499,7 +499,7 @@ int cpe_vector = -1;
 int ia64_cpe_irq = -1;
 
 static irqreturn_t
-ia64_mca_cpe_int_handler (int cpe_irq, void *arg, struct pt_regs *ptregs)
+ia64_mca_cpe_int_handler (int cpe_irq, void *arg)
 {
         static unsigned long    cpe_history[CPE_HISTORY_LENGTH];
         static int              index;
@@ -744,7 +744,7 @@ ia64_mca_wakeup_all(void)
  *  Outputs :   None
  */
 static irqreturn_t
-ia64_mca_rendez_int_handler(int rendez_irq, void *arg, struct pt_regs *regs)
+ia64_mca_rendez_int_handler(int rendez_irq, void *arg)
 {
         unsigned long flags;
         int cpu = smp_processor_id();
@@ -753,8 +753,8 @@ ia64_mca_rendez_int_handler(int rendez_irq, void *arg, struct pt_regs *regs)
 
         /* Mask all interrupts */
         local_irq_save(flags);
-        if (notify_die(DIE_MCA_RENDZVOUS_ENTER, "MCA", regs, (long)&nd, 0, 0)
-                        == NOTIFY_STOP)
+        if (notify_die(DIE_MCA_RENDZVOUS_ENTER, "MCA", get_irq_regs(),
+                       (long)&nd, 0, 0) == NOTIFY_STOP)
                 ia64_mca_spin(__FUNCTION__);
 
         ia64_mc_info.imi_rendez_checkin[cpu] = IA64_MCA_RENDEZ_CHECKIN_DONE;
@@ -763,16 +763,16 @@ ia64_mca_rendez_int_handler(int rendez_irq, void *arg, struct pt_regs *regs)
          */
         ia64_sal_mc_rendez();
 
-        if (notify_die(DIE_MCA_RENDZVOUS_PROCESS, "MCA", regs, (long)&nd, 0, 0)
-                        == NOTIFY_STOP)
+        if (notify_die(DIE_MCA_RENDZVOUS_PROCESS, "MCA", get_irq_regs(),
+                       (long)&nd, 0, 0) == NOTIFY_STOP)
                 ia64_mca_spin(__FUNCTION__);
 
         /* Wait for the monarch cpu to exit. */
         while (monarch_cpu != -1)
                cpu_relax();     /* spin until monarch leaves */
 
-        if (notify_die(DIE_MCA_RENDZVOUS_LEAVE, "MCA", regs, (long)&nd, 0, 0)
-                        == NOTIFY_STOP)
+        if (notify_die(DIE_MCA_RENDZVOUS_LEAVE, "MCA", get_irq_regs(),
+                       (long)&nd, 0, 0) == NOTIFY_STOP)
                 ia64_mca_spin(__FUNCTION__);
 
         /* Enable all interrupts */
@@ -791,12 +791,11 @@ ia64_mca_rendez_int_handler(int rendez_irq, void *arg, struct pt_regs *regs)
  *
  *  Inputs  :   wakeup_irq  (Wakeup-interrupt bit)
  *      arg             (Interrupt handler specific argument)
- *      ptregs          (Exception frame at the time of the interrupt)
  *  Outputs :   None
  *
  */
 static irqreturn_t
-ia64_mca_wakeup_int_handler(int wakeup_irq, void *arg, struct pt_regs *ptregs)
+ia64_mca_wakeup_int_handler(int wakeup_irq, void *arg)
 {
         return IRQ_HANDLED;
 }
@@ -1261,13 +1260,12 @@ static DECLARE_WORK(cmc_enable_work, ia64_mca_cmc_vector_enable_keventd, NULL);
  * Inputs
  *      interrupt number
  *      client data arg ptr
- *      saved registers ptr
  *
  * Outputs
  *      None
  */
 static irqreturn_t
-ia64_mca_cmc_int_handler(int cmc_irq, void *arg, struct pt_regs *ptregs)
+ia64_mca_cmc_int_handler(int cmc_irq, void *arg)
 {
         static unsigned long    cmc_history[CMC_HISTORY_LENGTH];
         static int              index;
@@ -1336,12 +1334,11 @@ out:
  * Inputs
  *      interrupt number
  *      client data arg ptr
- *      saved registers ptr
  * Outputs
  *      handled
  */
 static irqreturn_t
-ia64_mca_cmc_int_caller(int cmc_irq, void *arg, struct pt_regs *ptregs)
+ia64_mca_cmc_int_caller(int cmc_irq, void *arg)
 {
         static int start_count = -1;
         unsigned int cpuid;
@@ -1352,7 +1349,7 @@ ia64_mca_cmc_int_caller(int cmc_irq, void *arg, struct pt_regs *ptregs)
         if (start_count == -1)
                 start_count = IA64_LOG_COUNT(SAL_INFO_TYPE_CMC);
 
-        ia64_mca_cmc_int_handler(cmc_irq, arg, ptregs);
+        ia64_mca_cmc_int_handler(cmc_irq, arg);
 
         for (++cpuid ; cpuid < NR_CPUS && !cpu_online(cpuid) ; cpuid++);
 
@@ -1403,14 +1400,13 @@ ia64_mca_cmc_poll (unsigned long dummy)
  * Inputs
  *      interrupt number
  *      client data arg ptr
- *      saved registers ptr
  * Outputs
  *      handled
  */
 #ifdef CONFIG_ACPI
 
 static irqreturn_t
-ia64_mca_cpe_int_caller(int cpe_irq, void *arg, struct pt_regs *ptregs)
+ia64_mca_cpe_int_caller(int cpe_irq, void *arg)
 {
         static int start_count = -1;
         static int poll_time = MIN_CPE_POLL_INTERVAL;
@@ -1422,7 +1418,7 @@ ia64_mca_cpe_int_caller(int cpe_irq, void *arg, struct pt_regs *ptregs)
         if (start_count == -1)
                 start_count = IA64_LOG_COUNT(SAL_INFO_TYPE_CPE);
 
-        ia64_mca_cpe_int_handler(cpe_irq, arg, ptregs);
+        ia64_mca_cpe_int_handler(cpe_irq, arg);
 
         for (++cpuid ; cpuid < NR_CPUS && !cpu_online(cpuid) ; cpuid++);
 
diff --git a/arch/ia64/kernel/time.c b/arch/ia64/kernel/time.c
index 62e07f906e05..41169a9bc301 100644
--- a/arch/ia64/kernel/time.c
+++ b/arch/ia64/kernel/time.c
@@ -45,7 +45,7 @@ static struct time_interpolator itc_interpolator = {
 };
 
 static irqreturn_t
-timer_interrupt (int irq, void *dev_id, struct pt_regs *regs)
+timer_interrupt (int irq, void *dev_id)
 {
         unsigned long new_itm;
 
@@ -53,7 +53,7 @@ timer_interrupt (int irq, void *dev_id, struct pt_regs *regs)
                 return IRQ_HANDLED;
         }
 
-        platform_timer_interrupt(irq, dev_id, regs);
+        platform_timer_interrupt(irq, dev_id);
 
         new_itm = local_cpu_data->itm_next;
 
@@ -61,10 +61,10 @@ timer_interrupt (int irq, void *dev_id, struct pt_regs *regs)
                 printk(KERN_ERR "Oops: timer tick before it's due (itc=%lx,itm=%lx)\n",
                        ia64_get_itc(), new_itm);
 
-        profile_tick(CPU_PROFILING, regs);
+        profile_tick(CPU_PROFILING);
 
         while (1) {
-                update_process_times(user_mode(regs));
+                update_process_times(user_mode(get_irq_regs()));
 
                 new_itm += local_cpu_data->itm_delta;
 
diff --git a/arch/ia64/sn/kernel/huberror.c b/arch/ia64/sn/kernel/huberror.c
index 96fb81e6321f..abca6bd7962f 100644
--- a/arch/ia64/sn/kernel/huberror.c
+++ b/arch/ia64/sn/kernel/huberror.c
@@ -22,7 +22,7 @@
 void hubiio_crb_error_handler(struct hubdev_info *hubdev_info);
 extern void bte_crb_error_handler(cnodeid_t, int, int, ioerror_t *,
                                   int);
-static irqreturn_t hub_eint_handler(int irq, void *arg, struct pt_regs *ep)
+static irqreturn_t hub_eint_handler(int irq, void *arg)
 {
         struct hubdev_info *hubdev_info;
         struct ia64_sal_retval ret_stuff;
@@ -178,7 +178,7 @@ void hubiio_crb_error_handler(struct hubdev_info *hubdev_info)
  */
 void hub_error_init(struct hubdev_info *hubdev_info)
 {
-        if (request_irq(SGI_II_ERROR, (void *)hub_eint_handler, IRQF_SHARED,
+        if (request_irq(SGI_II_ERROR, hub_eint_handler, IRQF_SHARED,
                         "SN_hub_error", (void *)hubdev_info))
                 printk("hub_error_init: Failed to request_irq for 0x%p\n",
                     hubdev_info);
diff --git a/arch/ia64/sn/kernel/sn2/timer_interrupt.c b/arch/ia64/sn/kernel/sn2/timer_interrupt.c
index fa7f69945917..103d6ea8e94b 100644
--- a/arch/ia64/sn/kernel/sn2/timer_interrupt.c
+++ b/arch/ia64/sn/kernel/sn2/timer_interrupt.c
@@ -36,7 +36,7 @@ extern irqreturn_t timer_interrupt(int irq, void *dev_id, struct pt_regs *regs);
 
 #define SN_LB_INT_WAR_INTERVAL 100
 
-void sn_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+void sn_timer_interrupt(int irq, void *dev_id)
 {
         /* LED blinking */
         if (!pda->hb_count--) {
diff --git a/arch/ia64/sn/kernel/xpc_main.c b/arch/ia64/sn/kernel/xpc_main.c
index 4d026f9dd98b..fa96dfc0e1aa 100644
--- a/arch/ia64/sn/kernel/xpc_main.c
+++ b/arch/ia64/sn/kernel/xpc_main.c
@@ -222,7 +222,7 @@ xpc_timeout_partition_disengage_request(unsigned long data)
  * Notify the heartbeat check thread that an IRQ has been received.
  */
 static irqreturn_t
-xpc_act_IRQ_handler(int irq, void *dev_id, struct pt_regs *regs)
+xpc_act_IRQ_handler(int irq, void *dev_id)
 {
         atomic_inc(&xpc_act_IRQ_rcvd);
         wake_up_interruptible(&xpc_act_IRQ_wq);
@@ -607,12 +607,9 @@ xpc_activate_partition(struct xpc_partition *part)
  *      irq - Interrupt ReQuest number. NOT USED.
  *
  *      dev_id - partid of IPI's potential sender.
- *
- *      regs - processor's context before the processor entered
- *             interrupt code. NOT USED.
  */
 irqreturn_t
-xpc_notify_IRQ_handler(int irq, void *dev_id, struct pt_regs *regs)
+xpc_notify_IRQ_handler(int irq, void *dev_id)
 {
         partid_t partid = (partid_t) (u64) dev_id;
         struct xpc_partition *part = &xpc_partitions[partid];
diff --git a/arch/ia64/sn/pci/pcibr/pcibr_ate.c b/arch/ia64/sn/pci/pcibr/pcibr_ate.c
index 5eb1e1e078b4..935029fc400d 100644
--- a/arch/ia64/sn/pci/pcibr/pcibr_ate.c
+++ b/arch/ia64/sn/pci/pcibr/pcibr_ate.c
@@ -126,7 +126,7 @@ int pcibr_ate_alloc(struct pcibus_info *pcibus_info, int count)
  * Setup an Address Translation Entry as specified.  Use either the Bridge
  * internal maps or the external map RAM, as appropriate.
  */
-static inline u64 *pcibr_ate_addr(struct pcibus_info *pcibus_info,
+static inline u64 __iomem *pcibr_ate_addr(struct pcibus_info *pcibus_info,
                                        int ate_index)
 {
         if (ate_index < pcibus_info->pbi_int_ate_size) {
diff --git a/arch/ia64/sn/pci/pcibr/pcibr_provider.c b/arch/ia64/sn/pci/pcibr/pcibr_provider.c
index 838c93c9a16a..27dd7df0f446 100644
--- a/arch/ia64/sn/pci/pcibr/pcibr_provider.c
+++ b/arch/ia64/sn/pci/pcibr/pcibr_provider.c
@@ -95,7 +95,7 @@ u16 sn_ioboard_to_pci_bus(struct pci_bus *pci_bus)
  * bridge sends an error interrupt.
  */
 static irqreturn_t
-pcibr_error_intr_handler(int irq, void *arg, struct pt_regs *regs)
+pcibr_error_intr_handler(int irq, void *arg)
 {
         struct pcibus_info *soft = (struct pcibus_info *)arg;
 
@@ -138,7 +138,7 @@ pcibr_bus_fixup(struct pcibus_bussoft *prom_bussoft, struct pci_controller *cont
         /*
          * register the bridge's error interrupt handler
          */
-        if (request_irq(SGI_PCIASIC_ERROR, (void *)pcibr_error_intr_handler,
+        if (request_irq(SGI_PCIASIC_ERROR, pcibr_error_intr_handler,
                         IRQF_SHARED, "PCIBR error", (void *)(soft))) {
                 printk(KERN_WARNING
                        "pcibr cannot allocate interrupt for error handler\n");
diff --git a/arch/ia64/sn/pci/tioca_provider.c b/arch/ia64/sn/pci/tioca_provider.c
index c36b0f5affb3..8a2cb4e691fd 100644
--- a/arch/ia64/sn/pci/tioca_provider.c
+++ b/arch/ia64/sn/pci/tioca_provider.c
@@ -550,13 +550,12 @@ tioca_dma_map(struct pci_dev *pdev, u64 paddr, size_t byte_count, int dma_flags)
  * tioca_error_intr_handler - SGI TIO CA error interrupt handler
  * @irq: unused
  * @arg: pointer to tioca_common struct for the given CA
- * @pt: unused
  *
  * Handle a CA error interrupt.  Simply a wrapper around a SAL call which
  * defers processing to the SGI prom.
  */
 static irqreturn_t
-tioca_error_intr_handler(int irq, void *arg, struct pt_regs *pt)
+tioca_error_intr_handler(int irq, void *arg)
 {
         struct tioca_common *soft = arg;
         struct ia64_sal_retval ret_stuff;
diff --git a/arch/ia64/sn/pci/tioce_provider.c b/arch/ia64/sn/pci/tioce_provider.c
index af7171adcd2c..46e16dcf5971 100644
--- a/arch/ia64/sn/pci/tioce_provider.c
+++ b/arch/ia64/sn/pci/tioce_provider.c
@@ -53,7 +53,7 @@
  */
 
 static void inline
-tioce_mmr_war_pre(struct tioce_kernel *kern, void *mmr_addr)
+tioce_mmr_war_pre(struct tioce_kernel *kern, void __iomem *mmr_addr)
 {
         u64 mmr_base;
         u64 mmr_offset;
@@ -62,7 +62,7 @@ tioce_mmr_war_pre(struct tioce_kernel *kern, void *mmr_addr)
                 return;
 
         mmr_base = kern->ce_common->ce_pcibus.bs_base;
-        mmr_offset = (u64)mmr_addr - mmr_base;
+        mmr_offset = (unsigned long)mmr_addr - mmr_base;
 
         if (mmr_offset < 0x45000) {
                 u64 mmr_war_offset;
@@ -79,7 +79,7 @@ tioce_mmr_war_pre(struct tioce_kernel *kern, void *mmr_addr)
 }
 
 static void inline
-tioce_mmr_war_post(struct tioce_kernel *kern, void *mmr_addr)
+tioce_mmr_war_post(struct tioce_kernel *kern, void __iomem *mmr_addr)
 {
         u64 mmr_base;
         u64 mmr_offset;
@@ -88,7 +88,7 @@ tioce_mmr_war_post(struct tioce_kernel *kern, void *mmr_addr)
                 return;
 
         mmr_base = kern->ce_common->ce_pcibus.bs_base;
-        mmr_offset = (u64)mmr_addr - mmr_base;
+        mmr_offset = (unsigned long)mmr_addr - mmr_base;
 
         if (mmr_offset < 0x45000) {
                 if (mmr_offset == 0x100)
@@ -223,7 +223,7 @@ tioce_dma_d64(unsigned long ct_addr, int dma_flags)
  * @pci_dev.
  */
 static inline void
-pcidev_to_tioce(struct pci_dev *pdev, struct tioce **base,
+pcidev_to_tioce(struct pci_dev *pdev, struct tioce __iomem **base,
                 struct tioce_kernel **kernel, int *port)
 {
         struct pcidev_info *pcidev_info;
@@ -235,7 +235,7 @@ pcidev_to_tioce(struct pci_dev *pdev, struct tioce **base,
         ce_kernel = (struct tioce_kernel *)ce_common->ce_kernel_private;
 
         if (base)
-                *base = (struct tioce *)ce_common->ce_pcibus.bs_base;
+                *base = (struct tioce __iomem *)ce_common->ce_pcibus.bs_base;
         if (kernel)
                 *kernel = ce_kernel;
 
@@ -275,13 +275,13 @@ tioce_alloc_map(struct tioce_kernel *ce_kern, int type, int port,
         u64 pagesize;
         int msi_capable, msi_wanted;
         u64 *ate_shadow;
-        u64 *ate_reg;
+        u64 __iomem *ate_reg;
         u64 addr;
-        struct tioce *ce_mmr;
+        struct tioce __iomem *ce_mmr;
         u64 bus_base;
         struct tioce_dmamap *map;
 
-        ce_mmr = (struct tioce *)ce_kern->ce_common->ce_pcibus.bs_base;
+        ce_mmr = (struct tioce __iomem *)ce_kern->ce_common->ce_pcibus.bs_base;
 
         switch (type) {
         case TIOCE_ATE_M32:
@@ -386,7 +386,7 @@ tioce_dma_d32(struct pci_dev *pdev, u64 ct_addr, int dma_flags)
 {
         int dma_ok;
         int port;
-        struct tioce *ce_mmr;
+        struct tioce __iomem *ce_mmr;
         struct tioce_kernel *ce_kern;
         u64 ct_upper;
         u64 ct_lower;
@@ -461,7 +461,7 @@ tioce_dma_unmap(struct pci_dev *pdev, dma_addr_t bus_addr, int dir)
         int i;
         int port;
         struct tioce_kernel *ce_kern;
-        struct tioce *ce_mmr;
+        struct tioce __iomem *ce_mmr;
         unsigned long flags;
 
         bus_addr = tioce_dma_barrier(bus_addr, 0);
@@ -666,12 +666,11 @@ tioce_dma_consistent(struct pci_dev *pdev, u64 paddr, size_t byte_count, int dma
  * tioce_error_intr_handler - SGI TIO CE error interrupt handler
  * @irq: unused
  * @arg: pointer to tioce_common struct for the given CE
- * @pt: unused
  *
  * Handle a CE error interrupt.  Simply a wrapper around a SAL call which
  * defers processing to the SGI prom.
  */ static irqreturn_t
-tioce_error_intr_handler(int irq, void *arg, struct pt_regs *pt)
+tioce_error_intr_handler(int irq, void *arg)
 {
         struct tioce_common *soft = arg;
         struct ia64_sal_retval ret_stuff;
@@ -701,9 +700,9 @@ static void
 tioce_reserve_m32(struct tioce_kernel *ce_kern, u64 base, u64 limit)
 {
         int ate_index, last_ate, ps;
-        struct tioce *ce_mmr;
+        struct tioce __iomem *ce_mmr;
 
-        ce_mmr = (struct tioce *)ce_kern->ce_common->ce_pcibus.bs_base;
+        ce_mmr = (struct tioce __iomem *)ce_kern->ce_common->ce_pcibus.bs_base;
         ps = ce_kern->ce_ate3240_pagesize;
         ate_index = ATE_PAGE(base, ps);
         last_ate = ate_index + ATE_NPAGES(base, limit-base+1, ps) - 1;
@@ -737,7 +736,7 @@ tioce_kern_init(struct tioce_common *tioce_common)
         int dev;
         u32 tmp;
         unsigned int seg, bus;
-        struct tioce *tioce_mmr;
+        struct tioce __iomem *tioce_mmr;
         struct tioce_kernel *tioce_kern;
 
         tioce_kern = kzalloc(sizeof(struct tioce_kernel), GFP_KERNEL);
@@ -768,7 +767,7 @@ tioce_kern_init(struct tioce_common *tioce_common)
          * the ate's.
          */
 
-        tioce_mmr = (struct tioce *)tioce_common->ce_pcibus.bs_base;
+        tioce_mmr = (struct tioce __iomem *)tioce_common->ce_pcibus.bs_base;
         tioce_mmr_clri(tioce_kern, &tioce_mmr->ce_ure_page_map,
                        CE_URE_PAGESIZE_MASK);
         tioce_mmr_seti(tioce_kern, &tioce_mmr->ce_ure_page_map,
@@ -859,7 +858,7 @@ tioce_force_interrupt(struct sn_irq_info *sn_irq_info)
         struct pcidev_info *pcidev_info;
         struct tioce_common *ce_common;
         struct tioce_kernel *ce_kern;
-        struct tioce *ce_mmr;
+        struct tioce __iomem *ce_mmr;
         u64 force_int_val;
 
         if (!sn_irq_info->irq_bridge)
@@ -873,7 +872,7 @@ tioce_force_interrupt(struct sn_irq_info *sn_irq_info)
                 return;
 
         ce_common = (struct tioce_common *)pcidev_info->pdi_pcibus_info;
-        ce_mmr = (struct tioce *)ce_common->ce_pcibus.bs_base;
+        ce_mmr = (struct tioce __iomem *)ce_common->ce_pcibus.bs_base;
         ce_kern = (struct tioce_kernel *)ce_common->ce_kernel_private;
 
         /*
@@ -954,7 +953,7 @@ tioce_target_interrupt(struct sn_irq_info *sn_irq_info)
         struct pcidev_info *pcidev_info;
         struct tioce_common *ce_common;
         struct tioce_kernel *ce_kern;
-        struct tioce *ce_mmr;
+        struct tioce __iomem *ce_mmr;
         int bit;
         u64 vector;
 
@@ -963,7 +962,7 @@ tioce_target_interrupt(struct sn_irq_info *sn_irq_info)
                 return;
 
         ce_common = (struct tioce_common *)pcidev_info->pdi_pcibus_info;
-        ce_mmr = (struct tioce *)ce_common->ce_pcibus.bs_base;
+        ce_mmr = (struct tioce __iomem *)ce_common->ce_pcibus.bs_base;
         ce_kern = (struct tioce_kernel *)ce_common->ce_kernel_private;
 
         bit = sn_irq_info->irq_int_bit;
@@ -995,7 +994,7 @@ tioce_bus_fixup(struct pcibus_bussoft *prom_bussoft, struct pci_controller *cont
         cnodeid_t my_cnode, mem_cnode;
         struct tioce_common *tioce_common;
         struct tioce_kernel *tioce_kern;
-        struct tioce *tioce_mmr;
+        struct tioce __iomem *tioce_mmr;
 
         /*
          * Allocate kernel bus soft and copy from prom.
@@ -1019,7 +1018,7 @@ tioce_bus_fixup(struct pcibus_bussoft *prom_bussoft, struct pci_controller *cont
          * interrupt handler.
          */
 
-        tioce_mmr = (struct tioce *)tioce_common->ce_pcibus.bs_base;
+        tioce_mmr = (struct tioce __iomem *)tioce_common->ce_pcibus.bs_base;
         tioce_mmr_seti(tioce_kern, &tioce_mmr->ce_adm_int_status_alias, ~0ULL);
         tioce_mmr_seti(tioce_kern, &tioce_mmr->ce_adm_error_summary_alias,
                        ~0ULL);
diff --git a/arch/m32r/kernel/irq.c b/arch/m32r/kernel/irq.c
index 3841861df6a2..f8d8650383e0 100644
--- a/arch/m32r/kernel/irq.c
+++ b/arch/m32r/kernel/irq.c
@@ -77,13 +77,16 @@ skip:
  */
 asmlinkage unsigned int do_IRQ(int irq, struct pt_regs *regs)
 {
+        struct pt_regs *old_regs;
+        old_regs = set_irq_regs(regs);
         irq_enter();
 
 #ifdef CONFIG_DEBUG_STACKOVERFLOW
         /* FIXME M32R */
 #endif
-        __do_IRQ(irq, regs);
+        __do_IRQ(irq);
         irq_exit();
+        set_irq_regs(old_regs);
 
         return 1;
 }
diff --git a/arch/m32r/kernel/smp.c b/arch/m32r/kernel/smp.c
index 8b1f6eb76870..722e21f556dc 100644
--- a/arch/m32r/kernel/smp.c
+++ b/arch/m32r/kernel/smp.c
@@ -101,7 +101,7 @@ void smp_call_function_interrupt(void);
 
 void smp_send_timer(void);
 void smp_ipi_timer_interrupt(struct pt_regs *);
-void smp_local_timer_interrupt(struct pt_regs *);
+void smp_local_timer_interrupt(void);
 
 void send_IPI_allbutself(int, int);
 static void send_IPI_mask(cpumask_t, int, int);
@@ -734,9 +734,12 @@ void smp_send_timer(void)
  *==========================================================================*/
 void smp_ipi_timer_interrupt(struct pt_regs *regs)
 {
+        struct pt_regs *old_regs;
+        old_regs = set_irq_regs(regs);
         irq_enter();
-        smp_local_timer_interrupt(regs);
+        smp_local_timer_interrupt();
         irq_exit();
+        set_irq_regs(old_regs);
 }
 
 /*==========================================================================*
@@ -762,9 +765,9 @@ void smp_ipi_timer_interrupt(struct pt_regs *regs)
  * ---------- --- --------------------------------------------------------
  * 2003-06-24 hy  use per_cpu structure.
  *==========================================================================*/
-void smp_local_timer_interrupt(struct pt_regs *regs)
+void smp_local_timer_interrupt(void)
 {
-        int user = user_mode(regs);
+        int user = user_mode(get_irq_regs());
         int cpu_id = smp_processor_id();
 
         /*
@@ -774,7 +777,7 @@ void smp_local_timer_interrupt(struct pt_regs *regs)
          * useful with a profiling multiplier != 1
          */
 
-        profile_tick(CPU_PROFILING, regs);
+        profile_tick(CPU_PROFILING);
 
         if (--per_cpu(prof_counter, cpu_id) <= 0) {
                 /*
diff --git a/arch/m32r/kernel/time.c b/arch/m32r/kernel/time.c
index d8af155db984..a09038282c78 100644
--- a/arch/m32r/kernel/time.c
+++ b/arch/m32r/kernel/time.c
@@ -35,7 +35,7 @@
 
 #ifdef CONFIG_SMP
 extern void send_IPI_allbutself(int, int);
-extern void smp_local_timer_interrupt(struct pt_regs *);
+extern void smp_local_timer_interrupt(void);
 #endif
 
 #define TICK_SIZE       (tick_nsec / 1000)
@@ -188,15 +188,15 @@ static long last_rtc_update = 0;
  * timer_interrupt() needs to keep up the real-time clock,
  * as well as call the "do_timer()" routine every clocktick
  */
-irqreturn_t timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+irqreturn_t timer_interrupt(int irq, void *dev_id)
 {
 #ifndef CONFIG_SMP
-        profile_tick(CPU_PROFILING, regs);
+        profile_tick(CPU_PROFILING);
 #endif
         do_timer(1);
 
 #ifndef CONFIG_SMP
-        update_process_times(user_mode(regs));
+        update_process_times(user_mode(get_irq_regs()));
 #endif
         /*
          * If we have an externally synchronized Linux clock, then update
@@ -221,7 +221,7 @@ irqreturn_t timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
            a hack, so don't look closely for now.. */
 
 #ifdef CONFIG_SMP
-        smp_local_timer_interrupt(regs);
+        smp_local_timer_interrupt();
         smp_send_timer();
 #endif
 
diff --git a/arch/m68k/Kconfig b/arch/m68k/Kconfig
index 805b81fedf80..7bc14461a6ac 100644
--- a/arch/m68k/Kconfig
+++ b/arch/m68k/Kconfig
@@ -600,7 +600,7 @@ config MVME147_SCC
 
 config SERIAL167
         bool "CD2401 support for MVME166/7 serial ports"
-        depends on MVME16x && BROKEN
+        depends on MVME16x
         help
           This is the driver for the serial ports on the Motorola MVME166,
           167, and 172 boards.  Everyone using one of these boards should say
diff --git a/arch/m68k/amiga/amiints.c b/arch/m68k/amiga/amiints.c
index 96c79d840cff..28d95cfe8ac0 100644
--- a/arch/m68k/amiga/amiints.c
+++ b/arch/m68k/amiga/amiints.c
@@ -47,10 +47,10 @@
 
 static void amiga_enable_irq(unsigned int irq);
 static void amiga_disable_irq(unsigned int irq);
-static irqreturn_t ami_int1(int irq, void *dev_id, struct pt_regs *fp);
-static irqreturn_t ami_int3(int irq, void *dev_id, struct pt_regs *fp);
-static irqreturn_t ami_int4(int irq, void *dev_id, struct pt_regs *fp);
-static irqreturn_t ami_int5(int irq, void *dev_id, struct pt_regs *fp);
+static irqreturn_t ami_int1(int irq, void *dev_id);
+static irqreturn_t ami_int3(int irq, void *dev_id);
+static irqreturn_t ami_int4(int irq, void *dev_id);
+static irqreturn_t ami_int5(int irq, void *dev_id);
 
 static struct irq_controller amiga_irq_controller = {
         .name           = "amiga",
@@ -113,98 +113,98 @@ static void amiga_disable_irq(unsigned int irq)
  * The builtin Amiga hardware interrupt handlers.
  */
 
-static irqreturn_t ami_int1(int irq, void *dev_id, struct pt_regs *fp)
+static irqreturn_t ami_int1(int irq, void *dev_id)
 {
         unsigned short ints = amiga_custom.intreqr & amiga_custom.intenar;
 
         /* if serial transmit buffer empty, interrupt */
         if (ints & IF_TBE) {
                 amiga_custom.intreq = IF_TBE;
-                m68k_handle_int(IRQ_AMIGA_TBE, fp);
+                m68k_handle_int(IRQ_AMIGA_TBE);
         }
 
         /* if floppy disk transfer complete, interrupt */
         if (ints & IF_DSKBLK) {
                 amiga_custom.intreq = IF_DSKBLK;
-                m68k_handle_int(IRQ_AMIGA_DSKBLK, fp);
+                m68k_handle_int(IRQ_AMIGA_DSKBLK);
         }
 
         /* if software interrupt set, interrupt */
         if (ints & IF_SOFT) {
                 amiga_custom.intreq = IF_SOFT;
-                m68k_handle_int(IRQ_AMIGA_SOFT, fp);
+                m68k_handle_int(IRQ_AMIGA_SOFT);
         }
         return IRQ_HANDLED;
 }
 
-static irqreturn_t ami_int3(int irq, void *dev_id, struct pt_regs *fp)
+static irqreturn_t ami_int3(int irq, void *dev_id)
 {
         unsigned short ints = amiga_custom.intreqr & amiga_custom.intenar;
 
         /* if a blitter interrupt */
         if (ints & IF_BLIT) {
                 amiga_custom.intreq = IF_BLIT;
-                m68k_handle_int(IRQ_AMIGA_BLIT, fp);
+                m68k_handle_int(IRQ_AMIGA_BLIT);
         }
 
         /* if a copper interrupt */
         if (ints & IF_COPER) {
                 amiga_custom.intreq = IF_COPER;
-                m68k_handle_int(IRQ_AMIGA_COPPER, fp);
+                m68k_handle_int(IRQ_AMIGA_COPPER);
         }
 
         /* if a vertical blank interrupt */
         if (ints & IF_VERTB) {
                 amiga_custom.intreq = IF_VERTB;
-                m68k_handle_int(IRQ_AMIGA_VERTB, fp);
+                m68k_handle_int(IRQ_AMIGA_VERTB);
         }
         return IRQ_HANDLED;
 }
 
-static irqreturn_t ami_int4(int irq, void *dev_id, struct pt_regs *fp)
+static irqreturn_t ami_int4(int irq, void *dev_id)
 {
         unsigned short ints = amiga_custom.intreqr & amiga_custom.intenar;
 
         /* if audio 0 interrupt */
         if (ints & IF_AUD0) {
                 amiga_custom.intreq = IF_AUD0;
-                m68k_handle_int(IRQ_AMIGA_AUD0, fp);
+                m68k_handle_int(IRQ_AMIGA_AUD0);
         }
 
         /* if audio 1 interrupt */
         if (ints & IF_AUD1) {
                 amiga_custom.intreq = IF_AUD1;
-                m68k_handle_int(IRQ_AMIGA_AUD1, fp);
+                m68k_handle_int(IRQ_AMIGA_AUD1);
         }
 
         /* if audio 2 interrupt */
         if (ints & IF_AUD2) {
                 amiga_custom.intreq = IF_AUD2;
-                m68k_handle_int(IRQ_AMIGA_AUD2, fp);
+                m68k_handle_int(IRQ_AMIGA_AUD2);
         }
 
         /* if audio 3 interrupt */
         if (ints & IF_AUD3) {
                 amiga_custom.intreq = IF_AUD3;
-                m68k_handle_int(IRQ_AMIGA_AUD3, fp);
+                m68k_handle_int(IRQ_AMIGA_AUD3);
         }
         return IRQ_HANDLED;
 }
 
-static irqreturn_t ami_int5(int irq, void *dev_id, struct pt_regs *fp)
+static irqreturn_t ami_int5(int irq, void *dev_id)
 {
         unsigned short ints = amiga_custom.intreqr & amiga_custom.intenar;
 
         /* if serial receive buffer full interrupt */
         if (ints & IF_RBF) {
                 /* acknowledge of IF_RBF must be done by the serial interrupt */
-                m68k_handle_int(IRQ_AMIGA_RBF, fp);
+                m68k_handle_int(IRQ_AMIGA_RBF);
         }
 
         /* if a disk sync interrupt */
         if (ints & IF_DSKSYN) {
                 amiga_custom.intreq = IF_DSKSYN;
-                m68k_handle_int(IRQ_AMIGA_DSKSYN, fp);
+                m68k_handle_int(IRQ_AMIGA_DSKSYN);
         }
         return IRQ_HANDLED;
 }
diff --git a/arch/m68k/amiga/cia.c b/arch/m68k/amiga/cia.c
index dbad30054721..7a20058eb380 100644
--- a/arch/m68k/amiga/cia.c
+++ b/arch/m68k/amiga/cia.c
@@ -82,7 +82,7 @@ unsigned char cia_able_irq(struct ciabase *base, unsigned char mask)
         return old;
 }
 
-static irqreturn_t cia_handler(int irq, void *dev_id, struct pt_regs *fp)
+static irqreturn_t cia_handler(int irq, void *dev_id)
 {
         struct ciabase *base = (struct ciabase *)dev_id;
         int mach_irq;
@@ -93,7 +93,7 @@ static irqreturn_t cia_handler(int irq, void *dev_id, struct pt_regs *fp)
         amiga_custom.intreq = base->int_mask;
         for (; ints; mach_irq++, ints >>= 1) {
                 if (ints & 1)
-                        m68k_handle_int(mach_irq, fp);
+                        m68k_handle_int(mach_irq);
         }
         return IRQ_HANDLED;
 }
diff --git a/arch/m68k/amiga/config.c b/arch/m68k/amiga/config.c
index 092e50d2cb13..3204f412cad8 100644
--- a/arch/m68k/amiga/config.c
+++ b/arch/m68k/amiga/config.c
@@ -83,7 +83,7 @@ static char amiga_model_name[13] = "Amiga ";
 
 extern char m68k_debug_device[];
 
-static void amiga_sched_init(irqreturn_t (*handler)(int, void *, struct pt_regs *));
+static void amiga_sched_init(irq_handler_t handler);
 /* amiga specific irq functions */
 extern void amiga_init_IRQ (void);
 static void amiga_get_model(char *model);
@@ -487,8 +487,7 @@ void __init config_amiga(void)
 
 static unsigned short jiffy_ticks;
 
-static void __init amiga_sched_init(irqreturn_t (*timer_routine)(int, void *,
-                                                          struct pt_regs *))
+static void __init amiga_sched_init(irq_handler_t timer_routine)
 {
         static struct resource sched_res = {
             .name = "timer", .start = 0x00bfd400, .end = 0x00bfd5ff,
diff --git a/arch/m68k/apollo/config.c b/arch/m68k/apollo/config.c
index 6f4581575fb4..cb8e7609df4c 100644
--- a/arch/m68k/apollo/config.c
+++ b/arch/m68k/apollo/config.c
@@ -25,7 +25,7 @@ u_long cpuctrl_physaddr;
 u_long timer_physaddr;
 u_long apollo_model;
 
-extern void dn_sched_init(irqreturn_t (*handler)(int,void *,struct pt_regs *));
+extern void dn_sched_init(irq_handler_t handler);
 extern void dn_init_IRQ(void);
 extern unsigned long dn_gettimeoffset(void);
 extern int dn_dummy_hwclk(int, struct rtc_time *);
@@ -38,7 +38,7 @@ extern irqreturn_t dn_process_int(int irq, struct pt_regs *fp);
 #ifdef CONFIG_HEARTBEAT
 static void dn_heartbeat(int on);
 #endif
-static irqreturn_t dn_timer_int(int irq,void *, struct pt_regs *);
+static irqreturn_t dn_timer_int(int irq,void *);
 static void dn_get_model(char *model);
 static const char *apollo_models[] = {
         [APOLLO_DN3000-APOLLO_DN3000] = "DN3000 (Otter)",
@@ -174,13 +174,13 @@ void config_apollo(void) {
 
 }
 
-irqreturn_t dn_timer_int(int irq, void *dev_id, struct pt_regs *fp)
+irqreturn_t dn_timer_int(int irq, void *dev_id)
 {
-        irqreturn_t (*timer_handler)(int, void *, struct pt_regs *) = dev_id;
+        irq_handler_t timer_handler = dev_id;
 
         volatile unsigned char x;
 
-        timer_handler(irq, dev_id, fp);
+        timer_handler(irq, dev_id);
 
         x=*(volatile unsigned char *)(timer+3);
         x=*(volatile unsigned char *)(timer+5);
@@ -188,8 +188,8 @@ irqreturn_t dn_timer_int(int irq, void *dev_id, struct pt_regs *fp)
         return IRQ_HANDLED;
 }
 
-void dn_sched_init(irqreturn_t (*timer_routine)(int, void *, struct pt_regs *)) {
-
+void dn_sched_init(irq_handler_t timer_routine)
+{
         /* program timer 1 */
         *(volatile unsigned char *)(timer+3)=0x01;
         *(volatile unsigned char *)(timer+1)=0x40;
diff --git a/arch/m68k/apollo/dma.c b/arch/m68k/apollo/dma.c
deleted file mode 100644
index aed8be177ef1..000000000000
--- a/arch/m68k/apollo/dma.c
+++ /dev/null
@@ -1,50 +0,0 @@
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/mm.h>
-#include <linux/kd.h>
-#include <linux/tty.h>
-#include <linux/console.h>
-
-#include <asm/setup.h>
-#include <asm/bootinfo.h>
-#include <asm/system.h>
-#include <asm/pgtable.h>
-#include <asm/apollodma.h>
-#include <asm/io.h>
-
-/* note only works for 16 Bit 1 page DMA's */
-
-static unsigned short next_free_xlat_entry=0;
-
-unsigned short dma_map_page(unsigned long phys_addr,int count,int type) {
-
-        unsigned long page_aligned_addr=phys_addr & (~((1<<12)-1));
-        unsigned short start_map_addr=page_aligned_addr >> 10;
-        unsigned short free_xlat_entry, *xlat_map_entry;
-        int i;
-
-        free_xlat_entry=next_free_xlat_entry;
-        for(i=0,xlat_map_entry=addr_xlat_map+(free_xlat_entry<<2);i<8;i++,xlat_map_entry++) {
-#if 0
-                printk("phys_addr: %x, page_aligned_addr: %x, start_map_addr: %x\n",phys_addr,page_aligned_addr,start_map_addr+i);
-#endif
-                out_be16(xlat_map_entry, start_map_addr+i);
-        }
-
-        next_free_xlat_entry+=2;
-        if(next_free_xlat_entry>125)
-                next_free_xlat_entry=0;
-
-#if 0
-        printk("next_free_xlat_entry: %d\n",next_free_xlat_entry);
-#endif
-
-        return free_xlat_entry<<10;
-}
-
-void dma_unmap_page(unsigned short dma_addr) {
-
-        return ;
-
-}
-
diff --git a/arch/m68k/apollo/dn_ints.c b/arch/m68k/apollo/dn_ints.c
index 9fe07803797b..4274af125998 100644
--- a/arch/m68k/apollo/dn_ints.c
+++ b/arch/m68k/apollo/dn_ints.c
@@ -6,7 +6,7 @@
 
 void dn_process_int(unsigned int irq, struct pt_regs *fp)
 {
-        m68k_handle_int(irq, fp);
+        __m68k_handle_int(irq, fp);
 
         *(volatile unsigned char *)(pica)=0x20;
         *(volatile unsigned char *)(picb)=0x20;
diff --git a/arch/m68k/atari/ataints.c b/arch/m68k/atari/ataints.c
index ece13cbf9950..7f812641790c 100644
--- a/arch/m68k/atari/ataints.c
+++ b/arch/m68k/atari/ataints.c
@@ -332,6 +332,9 @@ static void atari_shutdown_irq(unsigned int irq)
         atari_disable_irq(irq);
         atari_turnoff_irq(irq);
         m68k_irq_shutdown(irq);
+
+        if (irq == IRQ_AUTO_4)
+            vectors[VEC_INT4] = falcon_hblhandler;
 }
 
 static struct irq_controller atari_irq_controller = {
@@ -356,7 +359,7 @@ static struct irq_controller atari_irq_controller = {
 
 void __init atari_init_IRQ(void)
 {
-        m68k_setup_user_interrupt(VEC_USER, 192, NULL);
+        m68k_setup_user_interrupt(VEC_USER, NUM_ATARI_SOURCES - IRQ_USER, NULL);
         m68k_setup_irq_controller(&atari_irq_controller, 1, NUM_ATARI_SOURCES - 1);
 
         /* Initialize the MFP(s) */
@@ -403,8 +406,10 @@ void __init atari_init_IRQ(void)
                  * gets overruns)
                  */
 
-                if (!MACH_IS_HADES)
+                if (!MACH_IS_HADES) {
                         vectors[VEC_INT2] = falcon_hblhandler;
+                        vectors[VEC_INT4] = falcon_hblhandler;
+                }
         }
 
         if (ATARIHW_PRESENT(PCM_8BIT) && ATARIHW_PRESENT(MICROWIRE)) {
diff --git a/arch/m68k/atari/config.c b/arch/m68k/atari/config.c
index b2079252a954..ca5cd4344e3d 100644
--- a/arch/m68k/atari/config.c
+++ b/arch/m68k/atari/config.c
@@ -62,7 +62,7 @@ static void atari_heartbeat( int on );
 #endif
 
 /* atari specific timer functions (in time.c) */
-extern void atari_sched_init(irqreturn_t (*)(int, void *, struct pt_regs *));
+extern void atari_sched_init(irq_handler_t );
 extern unsigned long atari_gettimeoffset (void);
 extern int atari_mste_hwclk (int, struct rtc_time *);
 extern int atari_tt_hwclk (int, struct rtc_time *);
diff --git a/arch/m68k/atari/stdma.c b/arch/m68k/atari/stdma.c
index 288f5e6a124e..d64b5804e980 100644
--- a/arch/m68k/atari/stdma.c
+++ b/arch/m68k/atari/stdma.c
@@ -44,7 +44,7 @@
 
 static int stdma_locked;                        /* the semaphore */
                                                 /* int func to be called */
-static irqreturn_t (*stdma_isr)(int, void *, struct pt_regs *);
+static irq_handler_t stdma_isr;
 static void *stdma_isr_data;                    /* data passed to isr */
 static DECLARE_WAIT_QUEUE_HEAD(stdma_wait);     /* wait queue for ST-DMA */
 
@@ -53,7 +53,7 @@ static DECLARE_WAIT_QUEUE_HEAD(stdma_wait);	/* wait queue for ST-DMA */
 
 /***************************** Prototypes *****************************/
 
-static irqreturn_t stdma_int (int irq, void *dummy, struct pt_regs *fp);
+static irqreturn_t stdma_int (int irq, void *dummy);
 
 /************************* End of Prototypes **************************/
 
@@ -75,8 +75,7 @@ static irqreturn_t stdma_int (int irq, void *dummy, struct pt_regs *fp);
  *
  */
 
-void stdma_lock(irqreturn_t (*handler)(int, void *, struct pt_regs *),
-                void *data)
+void stdma_lock(irq_handler_t handler, void *data)
 {
         unsigned long flags;
 
@@ -188,9 +187,9 @@ void __init stdma_init(void)
  *
  */
 
-static irqreturn_t stdma_int(int irq, void *dummy, struct pt_regs *fp)
+static irqreturn_t stdma_int(int irq, void *dummy)
 {
   if (stdma_isr)
-      (*stdma_isr)(irq, stdma_isr_data, fp);
+      (*stdma_isr)(irq, stdma_isr_data);
   return IRQ_HANDLED;
 }
diff --git a/arch/m68k/atari/time.c b/arch/m68k/atari/time.c
index e79bbc94216d..e0d3c8bfb408 100644
--- a/arch/m68k/atari/time.c
+++ b/arch/m68k/atari/time.c
@@ -16,11 +16,12 @@
 #include <linux/init.h>
 #include <linux/rtc.h>
 #include <linux/bcd.h>
+#include <linux/delay.h>
 
 #include <asm/atariints.h>
 
 void __init
-atari_sched_init(irqreturn_t (*timer_routine)(int, void *, struct pt_regs *))
+atari_sched_init(irq_handler_t timer_routine)
 {
     /* set Timer C data Register */
     mfp.tim_dt_c = INT_TICKS;
@@ -212,8 +213,12 @@ int atari_tt_hwclk( int op, struct rtc_time *t )
      * additionally the RTC_SET bit is set to prevent an update cycle.
      */
 
-    while( RTC_READ(RTC_FREQ_SELECT) & RTC_UIP )
-        schedule_timeout_interruptible(HWCLK_POLL_INTERVAL);
+    while( RTC_READ(RTC_FREQ_SELECT) & RTC_UIP ) {
+        if (in_atomic() || irqs_disabled())
+            mdelay(1);
+        else
+            schedule_timeout_interruptible(HWCLK_POLL_INTERVAL);
+    }
 
     local_irq_save(flags);
     RTC_WRITE( RTC_CONTROL, ctrl | RTC_SET );
diff --git a/arch/m68k/bvme6000/config.c b/arch/m68k/bvme6000/config.c
index d1e916ae55a8..896ae3d3d919 100644
--- a/arch/m68k/bvme6000/config.c
+++ b/arch/m68k/bvme6000/config.c
@@ -38,7 +38,7 @@
 
 static void bvme6000_get_model(char *model);
 static int  bvme6000_get_hardware_list(char *buffer);
-extern void bvme6000_sched_init(irqreturn_t (*handler)(int, void *, struct pt_regs *));
+extern void bvme6000_sched_init(irq_handler_t handler);
 extern unsigned long bvme6000_gettimeoffset (void);
 extern int bvme6000_hwclk (int, struct rtc_time *);
 extern int bvme6000_set_clock_mmss (unsigned long);
@@ -52,7 +52,7 @@ static unsigned char bin2bcd (unsigned char b);
 /* Save tick handler routine pointer, will point to do_timer() in
  * kernel/sched.c, called via bvme6000_process_int() */
 
-static irqreturn_t (*tick_handler)(int, void *, struct pt_regs *);
+static irq_handler_t tick_handler;
 
 
 int bvme6000_parse_bootinfo(const struct bi_record *bi)
@@ -154,7 +154,7 @@ void __init config_bvme6000(void)
 }
 
 
-irqreturn_t bvme6000_abort_int (int irq, void *dev_id, struct pt_regs *fp)
+irqreturn_t bvme6000_abort_int (int irq, void *dev_id)
 {
         unsigned long *new = (unsigned long *)vectors;
         unsigned long *old = (unsigned long *)0xf8000000;
@@ -171,14 +171,14 @@ irqreturn_t bvme6000_abort_int (int irq, void *dev_id, struct pt_regs *fp)
 }
 
 
-static irqreturn_t bvme6000_timer_int (int irq, void *dev_id, struct pt_regs *fp)
+static irqreturn_t bvme6000_timer_int (int irq, void *dev_id)
 {
     volatile RtcPtr_t rtc = (RtcPtr_t)BVME_RTC_BASE;
     unsigned char msr = rtc->msr & 0xc0;
 
     rtc->msr = msr | 0x20;              /* Ack the interrupt */
 
-    return tick_handler(irq, dev_id, fp);
+    return tick_handler(irq, dev_id);
 }
 
 /*
@@ -190,7 +190,7 @@ static irqreturn_t bvme6000_timer_int (int irq, void *dev_id, struct pt_regs *fp
  * so divide by 8 to get the microsecond result.
  */
 
-void bvme6000_sched_init (irqreturn_t (*timer_routine)(int, void *, struct pt_regs *))
+void bvme6000_sched_init (irq_handler_t timer_routine)
 {
     volatile RtcPtr_t rtc = (RtcPtr_t)BVME_RTC_BASE;
     unsigned char msr = rtc->msr & 0xc0;
diff --git a/arch/m68k/hp300/time.c b/arch/m68k/hp300/time.c
index 7df05662b277..dd7c8a2583d3 100644
--- a/arch/m68k/hp300/time.c
+++ b/arch/m68k/hp300/time.c
@@ -36,15 +36,15 @@
 
 #define INTVAL ((10000 / 4) - 1)
 
-static irqreturn_t hp300_tick(int irq, void *dev_id, struct pt_regs *regs)
+static irqreturn_t hp300_tick(int irq, void *dev_id)
 {
         unsigned long tmp;
-        irqreturn_t (*vector)(int, void *, struct pt_regs *) = dev_id;
+        irq_handler_t vector = dev_id;
         in_8(CLOCKBASE + CLKSR);
         asm volatile ("movpw %1@(5),%0" : "=d" (tmp) : "a" (CLOCKBASE));
         /* Turn off the network and SCSI leds */
         blinken_leds(0, 0xe0);
-        return vector(irq, NULL, regs);
+        return vector(irq, NULL);
 }
 
 unsigned long hp300_gettimeoffset(void)
@@ -63,7 +63,7 @@ unsigned long hp300_gettimeoffset(void)
   return (USECS_PER_JIFFY * ticks) / INTVAL;
 }
 
-void __init hp300_sched_init(irqreturn_t (*vector)(int, void *, struct pt_regs *))
+void __init hp300_sched_init(irq_handler_t vector)
 {
   out_8(CLOCKBASE + CLKCR2, 0x1);               /* select CR1 */
   out_8(CLOCKBASE + CLKCR1, 0x1);               /* reset */
diff --git a/arch/m68k/hp300/time.h b/arch/m68k/hp300/time.h
index 8ef9987b49ab..f5b3d098b0f5 100644
--- a/arch/m68k/hp300/time.h
+++ b/arch/m68k/hp300/time.h
@@ -1,4 +1,4 @@
-extern void hp300_sched_init(irqreturn_t (*vector)(int, void *, struct pt_regs *));
+extern void hp300_sched_init(irq_handler_t vector);
 extern unsigned long hp300_gettimeoffset (void);
 
 
diff --git a/arch/m68k/kernel/Makefile b/arch/m68k/kernel/Makefile
index dae609797dc0..1c9ecaa473d5 100644
--- a/arch/m68k/kernel/Makefile
+++ b/arch/m68k/kernel/Makefile
@@ -9,10 +9,11 @@ else
 endif
 extra-y += vmlinux.lds
 
-obj-y   := entry.o process.o traps.o ints.o dma.o signal.o ptrace.o \
+obj-y   := entry.o process.o traps.o ints.o signal.o ptrace.o \
            sys_m68k.o time.o semaphore.o setup.o m68k_ksyms.o
 
 obj-$(CONFIG_PCI)       += bios32.o
 obj-$(CONFIG_MODULES)   += module.o
+obj-y$(CONFIG_MMU_SUN3) += dma.o        # no, it's not a typo
 
 EXTRA_AFLAGS := -traditional
diff --git a/arch/m68k/kernel/dma.c b/arch/m68k/kernel/dma.c
index fc449f8b2045..9d4e4b5b6bd8 100644
--- a/arch/m68k/kernel/dma.c
+++ b/arch/m68k/kernel/dma.c
@@ -15,7 +15,7 @@
 #include <asm/scatterlist.h>
 
 void *dma_alloc_coherent(struct device *dev, size_t size,
-                         dma_addr_t *handle, int flag)
+                         dma_addr_t *handle, gfp_t flag)
 {
         struct page *page, **map;
         pgprot_t pgprot;
@@ -51,7 +51,7 @@ void *dma_alloc_coherent(struct device *dev, size_t size,
                 pgprot_val(pgprot) |= _PAGE_GLOBAL040 | _PAGE_NOCACHE_S;
         else
                 pgprot_val(pgprot) |= _PAGE_NOCACHE030;
-        addr = vmap(map, size, flag, pgprot);
+        addr = vmap(map, size, VM_MAP, pgprot);
         kfree(map);
 
         return addr;
diff --git a/arch/m68k/kernel/entry.S b/arch/m68k/kernel/entry.S
index 9083c8b7659f..222ce4244564 100644
--- a/arch/m68k/kernel/entry.S
+++ b/arch/m68k/kernel/entry.S
@@ -205,7 +205,7 @@ ENTRY(auto_inthandler)
         movel   %sp,%sp@-
         movel   %d0,%sp@-               |  put vector # on stack
 auto_irqhandler_fixup = . + 2
-        jsr     m68k_handle_int         |  process the IRQ
+        jsr     __m68k_handle_int       |  process the IRQ
         addql   #8,%sp                  |  pop parameters off stack
 
 ret_from_interrupt:
@@ -239,7 +239,7 @@ user_irqvec_fixup = . + 2
         movel   %sp,%sp@-
         movel   %d0,%sp@-               |  put vector # on stack
 user_irqhandler_fixup = . + 2
-        jsr     m68k_handle_int         |  process the IRQ
+        jsr     __m68k_handle_int       |  process the IRQ
         addql   #8,%sp                  |  pop parameters off stack
 
         subqb   #1,%curptr@(TASK_INFO+TINFO_PREEMPT+1)
@@ -706,4 +706,33 @@ sys_call_table:
         .long sys_add_key
         .long sys_request_key   /* 280 */
         .long sys_keyctl
+        .long sys_ioprio_set
+        .long sys_ioprio_get
+        .long sys_inotify_init
+        .long sys_inotify_add_watch     /* 285 */
+        .long sys_inotify_rm_watch
+        .long sys_migrate_pages
+        .long sys_openat
+        .long sys_mkdirat
+        .long sys_mknodat               /* 290 */
+        .long sys_fchownat
+        .long sys_futimesat
+        .long sys_fstatat64
+        .long sys_unlinkat
+        .long sys_renameat              /* 295 */
+        .long sys_linkat
+        .long sys_symlinkat
+        .long sys_readlinkat
+        .long sys_fchmodat
+        .long sys_faccessat             /* 300 */
+        .long sys_ni_syscall            /* Reserved for pselect6 */
+        .long sys_ni_syscall            /* Reserved for ppoll */
+        .long sys_unshare
+        .long sys_set_robust_list
+        .long sys_get_robust_list       /* 305 */
+        .long sys_splice
+        .long sys_sync_file_range
+        .long sys_tee
+        .long sys_vmsplice
+        .long sys_move_pages            /* 310 */
 
diff --git a/arch/m68k/kernel/ints.c b/arch/m68k/kernel/ints.c
index b33e37fb7b0e..84aceca6c05c 100644
--- a/arch/m68k/kernel/ints.c
+++ b/arch/m68k/kernel/ints.c
@@ -39,6 +39,7 @@
 #include <asm/page.h>
 #include <asm/machdep.h>
 #include <asm/cacheflush.h>
+#include <asm/irq_regs.h>
 
 #ifdef CONFIG_Q40
 #include <asm/q40ints.h>
@@ -104,7 +105,7 @@ void __init init_IRQ(void)
  * @handler: called from auto vector interrupts
  *
  * setup the handler to be called from auto vector interrupts instead of the
- * standard m68k_handle_int(), it will be called with irq numbers in the range
+ * standard __m68k_handle_int(), it will be called with irq numbers in the range
  * from IRQ_AUTO_1 - IRQ_AUTO_7.
  */
 void __init m68k_setup_auto_interrupt(void (*handler)(unsigned int, struct pt_regs *))
@@ -123,7 +124,7 @@ void __init m68k_setup_auto_interrupt(void (*handler)(unsigned int, struct pt_re
  * setup user vector interrupts, this includes activating the specified range
  * of interrupts, only then these interrupts can be requested (note: this is
  * different from auto vector interrupts). An optional handler can be installed
- * to be called instead of the default m68k_handle_int(), it will be called
+ * to be called instead of the default __m68k_handle_int(), it will be called
  * with irq numbers starting from IRQ_USER.
  */
 void __init m68k_setup_user_interrupt(unsigned int vec, unsigned int cnt,
@@ -131,6 +132,7 @@ void __init m68k_setup_user_interrupt(unsigned int vec, unsigned int cnt,
 {
         int i;
 
+        BUG_ON(IRQ_USER + cnt >= NR_IRQS);
         m68k_first_user_vec = vec;
         for (i = 0; i < cnt; i++)
                 irq_controller[IRQ_USER + i] = &user_irq_controller;
@@ -215,7 +217,7 @@ int setup_irq(unsigned int irq, struct irq_node *node)
 }
 
 int request_irq(unsigned int irq,
-                irqreturn_t (*handler) (int, void *, struct pt_regs *),
+                irq_handler_t handler,
                 unsigned long flags, const char *devname, void *dev_id)
 {
         struct irq_node *node;
@@ -379,18 +381,25 @@ unsigned int irq_canonicalize(unsigned int irq)
 
 EXPORT_SYMBOL(irq_canonicalize);
 
-asmlinkage void m68k_handle_int(unsigned int irq, struct pt_regs *regs)
+asmlinkage void m68k_handle_int(unsigned int irq)
 {
         struct irq_node *node;
-
         kstat_cpu(0).irqs[irq]++;
         node = irq_list[irq];
         do {
-                node->handler(irq, node->dev_id, regs);
+                node->handler(irq, node->dev_id);
                 node = node->next;
         } while (node);
 }
 
+asmlinkage void __m68k_handle_int(unsigned int irq, struct pt_regs *regs)
+{
+        struct pt_regs *old_regs;
+        old_regs = set_irq_regs(regs);
+        m68k_handle_int(irq);
+        set_irq_regs(old_regs);
+}
+
 asmlinkage void handle_badint(struct pt_regs *regs)
 {
         kstat_cpu(0).irqs[0]++;
diff --git a/arch/m68k/kernel/m68k_ksyms.c b/arch/m68k/kernel/m68k_ksyms.c
index aff26a52167c..f9636e84e6a4 100644
--- a/arch/m68k/kernel/m68k_ksyms.c
+++ b/arch/m68k/kernel/m68k_ksyms.c
@@ -1,7 +1,6 @@
 #include <linux/module.h>
 #include <linux/linkage.h>
 #include <linux/sched.h>
-#include <linux/string.h>
 #include <linux/mm.h>
 #include <linux/user.h>
 #include <linux/elfcore.h>
@@ -53,9 +52,6 @@ EXPORT_SYMBOL(mach_beep);
 #endif
 EXPORT_SYMBOL(dump_fpu);
 EXPORT_SYMBOL(dump_thread);
-EXPORT_SYMBOL(strnlen);
-EXPORT_SYMBOL(strrchr);
-EXPORT_SYMBOL(strstr);
 EXPORT_SYMBOL(kernel_thread);
 #ifdef CONFIG_VME
 EXPORT_SYMBOL(vme_brdtype);
diff --git a/arch/m68k/kernel/setup.c b/arch/m68k/kernel/setup.c
index f2d7ee0ee18c..42d5b85f3350 100644
--- a/arch/m68k/kernel/setup.c
+++ b/arch/m68k/kernel/setup.c
@@ -64,7 +64,7 @@ static char m68k_command_line[CL_SIZE];
 
 char m68k_debug_device[6] = "";
 
-void (*mach_sched_init) (irqreturn_t (*handler)(int, void *, struct pt_regs *)) __initdata = NULL;
+void (*mach_sched_init) (irq_handler_t handler) __initdata = NULL;
 /* machine dependent irq functions */
 void (*mach_init_IRQ) (void) __initdata = NULL;
 void (*mach_get_model) (char *model);
diff --git a/arch/m68k/kernel/time.c b/arch/m68k/kernel/time.c
index 28b2fefa4513..2a599c3ed787 100644
--- a/arch/m68k/kernel/time.c
+++ b/arch/m68k/kernel/time.c
@@ -21,6 +21,7 @@
 
 #include <asm/machdep.h>
 #include <asm/io.h>
+#include <asm/irq_regs.h>
 
 #include <linux/time.h>
 #include <linux/timex.h>
@@ -37,13 +38,13 @@ static inline int set_rtc_mmss(unsigned long nowtime)
  * timer_interrupt() needs to keep up the real-time clock,
  * as well as call the "do_timer()" routine every clocktick
  */
-static irqreturn_t timer_interrupt(int irq, void *dummy, struct pt_regs * regs)
+static irqreturn_t timer_interrupt(int irq, void *dummy)
 {
         do_timer(1);
 #ifndef CONFIG_SMP
-        update_process_times(user_mode(regs));
+        update_process_times(user_mode(get_irq_regs()));
 #endif
-        profile_tick(CPU_PROFILING, regs);
+        profile_tick(CPU_PROFILING);
 
 #ifdef CONFIG_HEARTBEAT
         /* use power LED as a heartbeat instead -- much more useful
diff --git a/arch/m68k/lib/string.c b/arch/m68k/lib/string.c
index b92b89e1ea0c..891e1347bc4e 100644
--- a/arch/m68k/lib/string.c
+++ b/arch/m68k/lib/string.c
@@ -1,6 +1,19 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file COPYING in the main directory of this archive
+ * for more details.
+ */
+
+#define __IN_STRING_C
 
-#include <linux/types.h>
 #include <linux/module.h>
+#include <linux/string.h>
+
+char *strcpy(char *dest, const char *src)
+{
+        return __kernel_strcpy(dest, src);
+}
+EXPORT_SYMBOL(strcpy);
 
 void *memset(void *s, int c, size_t count)
 {
diff --git a/arch/m68k/lib/uaccess.c b/arch/m68k/lib/uaccess.c
index 1bc188c0d983..865f9fb9e686 100644
--- a/arch/m68k/lib/uaccess.c
+++ b/arch/m68k/lib/uaccess.c
@@ -84,7 +84,7 @@ unsigned long __generic_copy_to_user(void __user *to, const void *from,
                 "       .even\n"
                 "20:    lsl.l   #2,%0\n"
                 "50:    add.l   %5,%0\n"
-                "       jra     7b\n"
+                "       jra     8b\n"
                 "       .previous\n"
                 "\n"
                 "       .section __ex_table,\"a\"\n"
diff --git a/arch/m68k/mac/baboon.c b/arch/m68k/mac/baboon.c
index 6eaa881793d1..a1c7ec706741 100644
--- a/arch/m68k/mac/baboon.c
+++ b/arch/m68k/mac/baboon.c
@@ -25,7 +25,7 @@
 int baboon_present,baboon_active;
 volatile struct baboon *baboon;
 
-irqreturn_t baboon_irq(int, void *, struct pt_regs *);
+irqreturn_t baboon_irq(int, void *);
 
 #if 0
 extern int macide_ack_intr(struct ata_channel *);
@@ -64,7 +64,7 @@ void __init baboon_register_interrupts(void)
  * Baboon interrupt handler. This works a lot like a VIA.
  */
 
-irqreturn_t baboon_irq(int irq, void *dev_id, struct pt_regs *regs)
+irqreturn_t baboon_irq(int irq, void *dev_id)
 {
         int irq_bit,i;
         unsigned char events;
@@ -81,7 +81,7 @@ irqreturn_t baboon_irq(int irq, void *dev_id, struct pt_regs *regs)
         for (i = 0, irq_bit = 1 ; i < 3 ; i++, irq_bit <<= 1) {
                 if (events & irq_bit/* & baboon_active*/) {
                         baboon_active &= ~irq_bit;
-                        m68k_handle_int(IRQ_BABOON_0 + i, regs);
+                        m68k_handle_int(IRQ_BABOON_0 + i);
                         baboon_active |= irq_bit;
                         baboon->mb_ifr &= ~irq_bit;
                 }
diff --git a/arch/m68k/mac/config.c b/arch/m68k/mac/config.c
index 85dda1095b1f..562b38d00180 100644
--- a/arch/m68k/mac/config.c
+++ b/arch/m68k/mac/config.c
@@ -72,7 +72,7 @@ extern int show_mac_interrupts(struct seq_file *, void *);
 extern void iop_preinit(void);
 extern void iop_init(void);
 extern void via_init(void);
-extern void via_init_clock(irqreturn_t (*func)(int, void *, struct pt_regs *));
+extern void via_init_clock(irq_handler_t func);
 extern void via_flush_cache(void);
 extern void oss_init(void);
 extern void psc_init(void);
@@ -88,7 +88,7 @@ extern void mac_debugging_long(int, long);
 
 static void mac_get_model(char *str);
 
-static void mac_sched_init(irqreturn_t (*vector)(int, void *, struct pt_regs *))
+static void mac_sched_init(irq_handler_t vector)
 {
         via_init_clock(vector);
 }
diff --git a/arch/m68k/mac/iop.c b/arch/m68k/mac/iop.c
index bc657b1057a7..0cea21f58192 100644
--- a/arch/m68k/mac/iop.c
+++ b/arch/m68k/mac/iop.c
@@ -132,7 +132,7 @@ static int iop_get_proc_info(char *, char **, off_t, int);
 
 struct listener {
         const char *devname;
-        void (*handler)(struct iop_msg *, struct pt_regs *);
+        void (*handler)(struct iop_msg *);
 };
 
 /*
@@ -152,7 +152,7 @@ static struct iop_msg iop_msg_pool[NUM_IOP_MSGS];
 static struct iop_msg *iop_send_queue[NUM_IOPS][NUM_IOP_CHAN];
 static struct listener iop_listeners[NUM_IOPS][NUM_IOP_CHAN];
 
-irqreturn_t iop_ism_irq(int, void *, struct pt_regs *);
+irqreturn_t iop_ism_irq(int, void *);
 
 extern void oss_irq_enable(int);
 
@@ -342,7 +342,7 @@ void __init iop_register_interrupts(void)
  */
 
 int iop_listen(uint iop_num, uint chan,
-                void (*handler)(struct iop_msg *, struct pt_regs *),
+                void (*handler)(struct iop_msg *),
                 const char *devname)
 {
         if ((iop_num >= NUM_IOPS) || !iop_base[iop_num]) return -EINVAL;
@@ -407,7 +407,7 @@ static void iop_do_send(struct iop_msg *msg)
  * has gone into the IOP_MSG_COMPLETE state.
  */
 
-static void iop_handle_send(uint iop_num, uint chan, struct pt_regs *regs)
+static void iop_handle_send(uint iop_num, uint chan)
 {
         volatile struct mac_iop *iop = iop_base[iop_num];
         struct iop_msg *msg,*msg2;
@@ -426,7 +426,7 @@ static void iop_handle_send(uint iop_num, uint chan, struct pt_regs *regs)
         for (i = 0 ; i < IOP_MSG_LEN ; i++, offset++) {
                 msg->reply[i] = iop_readb(iop, offset);
         }
-        if (msg->handler) (*msg->handler)(msg, regs);
+        if (msg->handler) (*msg->handler)(msg);
         msg2 = msg;
         msg = msg->next;
         iop_free_msg(msg2);
@@ -440,7 +440,7 @@ static void iop_handle_send(uint iop_num, uint chan, struct pt_regs *regs)
  * gone into the IOP_MSG_NEW state.
  */
 
-static void iop_handle_recv(uint iop_num, uint chan, struct pt_regs *regs)
+static void iop_handle_recv(uint iop_num, uint chan)
 {
         volatile struct mac_iop *iop = iop_base[iop_num];
         int i,offset;
@@ -468,7 +468,7 @@ static void iop_handle_recv(uint iop_num, uint chan, struct pt_regs *regs)
         /* the message ourselves to avoid possible stalls.         */
 
         if (msg->handler) {
-                (*msg->handler)(msg, regs);
+                (*msg->handler)(msg);
         } else {
 #ifdef DEBUG_IOP
                 printk("iop_handle_recv: unclaimed message on iop %d channel %d\n", iop_num, chan);
@@ -492,7 +492,7 @@ static void iop_handle_recv(uint iop_num, uint chan, struct pt_regs *regs)
 
 int iop_send_message(uint iop_num, uint chan, void *privdata,
                       uint msg_len, __u8 *msg_data,
-                      void (*handler)(struct iop_msg *, struct pt_regs *))
+                      void (*handler)(struct iop_msg *))
 {
         struct iop_msg *msg, *q;
 
@@ -584,7 +584,7 @@ __u8 *iop_compare_code(uint iop_num, __u8 *code_start,
  * Handle an ISM IOP interrupt
  */
 
-irqreturn_t iop_ism_irq(int irq, void *dev_id, struct pt_regs *regs)
+irqreturn_t iop_ism_irq(int irq, void *dev_id)
 {
         uint iop_num = (uint) dev_id;
         volatile struct mac_iop *iop = iop_base[iop_num];
@@ -608,7 +608,7 @@ irqreturn_t iop_ism_irq(int irq, void *dev_id, struct pt_regs *regs)
                         printk(" %02X", state);
 #endif
                         if (state == IOP_MSG_COMPLETE) {
-                                iop_handle_send(iop_num, i, regs);
+                                iop_handle_send(iop_num, i);
                         }
                 }
 #ifdef DEBUG_IOP
@@ -628,7 +628,7 @@ irqreturn_t iop_ism_irq(int irq, void *dev_id, struct pt_regs *regs)
                         printk(" %02X", state);
 #endif
                         if (state == IOP_MSG_NEW) {
-                                iop_handle_recv(iop_num, i, regs);
+                                iop_handle_recv(iop_num, i);
                         }
                 }
 #ifdef DEBUG_IOP
diff --git a/arch/m68k/mac/macints.c b/arch/m68k/mac/macints.c
index 694b14bb0de1..f6fcd754d8f6 100644
--- a/arch/m68k/mac/macints.c
+++ b/arch/m68k/mac/macints.c
@@ -133,6 +133,7 @@
 #include <asm/hwtest.h>
 #include <asm/errno.h>
 #include <asm/macints.h>
+#include <asm/irq_regs.h>
 
 #define DEBUG_SPURIOUS
 #define SHUTUP_SONIC
@@ -208,8 +209,8 @@ static void scc_irq_disable(unsigned int);
  * console_loglevel determines NMI handler function
  */
 
-irqreturn_t mac_nmi_handler(int, void *, struct pt_regs *);
-irqreturn_t mac_debug_handler(int, void *, struct pt_regs *);
+irqreturn_t mac_nmi_handler(int, void *);
+irqreturn_t mac_debug_handler(int, void *);
 
 /* #define DEBUG_MACINTS */
 
@@ -393,7 +394,7 @@ int mac_irq_pending(unsigned int irq)
 
 static int num_debug[8];
 
-irqreturn_t mac_debug_handler(int irq, void *dev_id, struct pt_regs *regs)
+irqreturn_t mac_debug_handler(int irq, void *dev_id)
 {
         if (num_debug[irq] < 10) {
                 printk("DEBUG: Unexpected IRQ %d\n", irq);
@@ -405,7 +406,7 @@ irqreturn_t mac_debug_handler(int irq, void *dev_id, struct pt_regs *regs)
 static int in_nmi;
 static volatile int nmi_hold;
 
-irqreturn_t mac_nmi_handler(int irq, void *dev_id, struct pt_regs *fp)
+irqreturn_t mac_nmi_handler(int irq, void *dev_id)
 {
         int i;
         /*
@@ -432,6 +433,7 @@ irqreturn_t mac_nmi_handler(int irq, void *dev_id, struct pt_regs *fp)
 
         if (console_loglevel >= 8) {
 #if 0
+                struct pt_regs *fp = get_irq_regs();
                 show_state();
                 printk("PC: %08lx\nSR: %04x  SP: %p\n", fp->pc, fp->sr, fp);
                 printk("d0: %08lx    d1: %08lx    d2: %08lx    d3: %08lx\n",
@@ -479,7 +481,7 @@ static void scc_irq_disable(unsigned int irq)
  * here is cleaner than hacking it into drivers/char/macserial.c.
  */
 
-void mac_scc_dispatch(int irq, void *dev_id, struct pt_regs *regs)
+void mac_scc_dispatch(int irq, void *dev_id)
 {
         volatile unsigned char *scc = (unsigned char *) mac_bi_data.sccbase + 2;
         unsigned char reg;
@@ -504,7 +506,7 @@ void mac_scc_dispatch(int irq, void *dev_id, struct pt_regs *regs)
         /* pretty much kill the system.                 */
 
         if (reg & 0x38)
-                m68k_handle_int(IRQ_SCCA, regs);
+                m68k_handle_int(IRQ_SCCA);
         if (reg & 0x07)
-                m68k_handle_int(IRQ_SCCB, regs);
+                m68k_handle_int(IRQ_SCCB);
 }
diff --git a/arch/m68k/mac/oss.c b/arch/m68k/mac/oss.c
index 63e04365191f..63690819565a 100644
--- a/arch/m68k/mac/oss.c
+++ b/arch/m68k/mac/oss.c
@@ -30,11 +30,11 @@
 int oss_present;
 volatile struct mac_oss *oss;
 
-irqreturn_t oss_irq(int, void *, struct pt_regs *);
-irqreturn_t oss_nubus_irq(int, void *, struct pt_regs *);
+irqreturn_t oss_irq(int, void *);
+irqreturn_t oss_nubus_irq(int, void *);
 
-extern irqreturn_t via1_irq(int, void *, struct pt_regs *);
-extern irqreturn_t mac_scc_dispatch(int, void *, struct pt_regs *);
+extern irqreturn_t via1_irq(int, void *);
+extern irqreturn_t mac_scc_dispatch(int, void *);
 
 /*
  * Initialize the OSS
@@ -92,7 +92,7 @@ void __init oss_nubus_init(void)
  * and SCSI; everything else is routed to its own autovector IRQ.
  */
 
-irqreturn_t oss_irq(int irq, void *dev_id, struct pt_regs *regs)
+irqreturn_t oss_irq(int irq, void *dev_id)
 {
         int events;
 
@@ -113,7 +113,7 @@ irqreturn_t oss_irq(int irq, void *dev_id, struct pt_regs *regs)
                 oss->irq_pending &= ~OSS_IP_SOUND;
         } else if (events & OSS_IP_SCSI) {
                 oss->irq_level[OSS_SCSI] = OSS_IRQLEV_DISABLED;
-                m68k_handle_int(IRQ_MAC_SCSI, regs);
+                m68k_handle_int(IRQ_MAC_SCSI);
                 oss->irq_pending &= ~OSS_IP_SCSI;
                 oss->irq_level[OSS_SCSI] = OSS_IRQLEV_SCSI;
         } else {
@@ -128,7 +128,7 @@ irqreturn_t oss_irq(int irq, void *dev_id, struct pt_regs *regs)
  * Unlike the VIA/RBV this is on its own autovector interrupt level.
  */
 
-irqreturn_t oss_nubus_irq(int irq, void *dev_id, struct pt_regs *regs)
+irqreturn_t oss_nubus_irq(int irq, void *dev_id)
 {
         int events, irq_bit, i;
 
@@ -146,7 +146,7 @@ irqreturn_t oss_nubus_irq(int irq, void *dev_id, struct pt_regs *regs)
         for (i = 0, irq_bit = 1 ; i < 6 ; i++, irq_bit <<= 1) {
                 if (events & irq_bit) {
                         oss->irq_level[i] = OSS_IRQLEV_DISABLED;
-                        m68k_handle_int(NUBUS_SOURCE_BASE + i, regs);
+                        m68k_handle_int(NUBUS_SOURCE_BASE + i);
                         oss->irq_pending &= ~irq_bit;
                         oss->irq_level[i] = OSS_IRQLEV_NUBUS;
                 }
diff --git a/arch/m68k/mac/psc.c b/arch/m68k/mac/psc.c
index e26218091755..15378a5878c9 100644
--- a/arch/m68k/mac/psc.c
+++ b/arch/m68k/mac/psc.c
@@ -30,7 +30,7 @@
 int psc_present;
 volatile __u8 *psc;
 
-irqreturn_t psc_irq(int, void *, struct pt_regs *);
+irqreturn_t psc_irq(int, void *);
 
 /*
  * Debugging dump, used in various places to see what's going on.
@@ -127,7 +127,7 @@ void __init psc_register_interrupts(void)
  * PSC interrupt handler. It's a lot like the VIA interrupt handler.
  */
 
-irqreturn_t psc_irq(int irq, void *dev_id, struct pt_regs *regs)
+irqreturn_t psc_irq(int irq, void *dev_id)
 {
         int pIFR        = pIFRbase + ((int) dev_id);
         int pIER        = pIERbase + ((int) dev_id);
@@ -149,7 +149,7 @@ irqreturn_t psc_irq(int irq, void *dev_id, struct pt_regs *regs)
         for (i = 0, irq_bit = 1 ; i < 4 ; i++, irq_bit <<= 1) {
                 if (events & irq_bit) {
                         psc_write_byte(pIER, irq_bit);
-                        m68k_handle_int(base_irq + i, regs);
+                        m68k_handle_int(base_irq + i);
                         psc_write_byte(pIFR, irq_bit);
                         psc_write_byte(pIER, irq_bit | 0x80);
                 }
diff --git a/arch/m68k/mac/via.c b/arch/m68k/mac/via.c
index c4aa345d544e..e27735be2924 100644
--- a/arch/m68k/mac/via.c
+++ b/arch/m68k/mac/via.c
@@ -63,14 +63,14 @@ static int gIER,gIFR,gBufA,gBufB;
 static int  nubus_active;
 
 void via_debug_dump(void);
-irqreturn_t via1_irq(int, void *, struct pt_regs *);
-irqreturn_t via2_irq(int, void *, struct pt_regs *);
-irqreturn_t via_nubus_irq(int, void *, struct pt_regs *);
+irqreturn_t via1_irq(int, void *);
+irqreturn_t via2_irq(int, void *);
+irqreturn_t via_nubus_irq(int, void *);
 void via_irq_enable(int irq);
 void via_irq_disable(int irq);
 void via_irq_clear(int irq);
 
-extern irqreturn_t mac_scc_dispatch(int, void *, struct pt_regs *);
+extern irqreturn_t mac_scc_dispatch(int, void *);
 extern int oss_present;
 
 /*
@@ -235,7 +235,7 @@ void __init via_init(void)
  * Start the 100 Hz clock
  */
 
-void __init via_init_clock(irqreturn_t (*func)(int, void *, struct pt_regs *))
+void __init via_init_clock(irq_handler_t func)
 {
         via1[vACR] |= 0x40;
         via1[vT1LL] = MAC_CLOCK_LOW;
@@ -412,7 +412,7 @@ void __init via_nubus_init(void)
  * the machspec interrupt number after clearing the interrupt.
  */
 
-irqreturn_t via1_irq(int irq, void *dev_id, struct pt_regs *regs)
+irqreturn_t via1_irq(int irq, void *dev_id)
 {
         int irq_bit, i;
         unsigned char events, mask;
@@ -424,7 +424,7 @@ irqreturn_t via1_irq(int irq, void *dev_id, struct pt_regs *regs)
         for (i = 0, irq_bit = 1 ; i < 7 ; i++, irq_bit <<= 1)
                 if (events & irq_bit) {
                         via1[vIER] = irq_bit;
-                        m68k_handle_int(VIA1_SOURCE_BASE + i, regs);
+                        m68k_handle_int(VIA1_SOURCE_BASE + i);
                         via1[vIFR] = irq_bit;
                         via1[vIER] = irq_bit | 0x80;
                 }
@@ -439,14 +439,14 @@ irqreturn_t via1_irq(int irq, void *dev_id, struct pt_regs *regs)
                 /* No, it won't be set. that's why we're doing this. */
                 via_irq_disable(IRQ_MAC_NUBUS);
                 via_irq_clear(IRQ_MAC_NUBUS);
-                m68k_handle_int(IRQ_MAC_NUBUS, regs);
+                m68k_handle_int(IRQ_MAC_NUBUS);
                 via_irq_enable(IRQ_MAC_NUBUS);
         }
 #endif
         return IRQ_HANDLED;
 }
 
-irqreturn_t via2_irq(int irq, void *dev_id, struct pt_regs *regs)
+irqreturn_t via2_irq(int irq, void *dev_id)
 {
         int irq_bit, i;
         unsigned char events, mask;
@@ -459,7 +459,7 @@ irqreturn_t via2_irq(int irq, void *dev_id, struct pt_regs *regs)
                 if (events & irq_bit) {
                         via2[gIER] = irq_bit;
                         via2[gIFR] = irq_bit | rbv_clear;
-                        m68k_handle_int(VIA2_SOURCE_BASE + i, regs);
+                        m68k_handle_int(VIA2_SOURCE_BASE + i);
                         via2[gIER] = irq_bit | 0x80;
                 }
         return IRQ_HANDLED;
@@ -470,7 +470,7 @@ irqreturn_t via2_irq(int irq, void *dev_id, struct pt_regs *regs)
  * VIA2 dispatcher as a fast interrupt handler.
  */
 
-irqreturn_t via_nubus_irq(int irq, void *dev_id, struct pt_regs *regs)
+irqreturn_t via_nubus_irq(int irq, void *dev_id)
 {
         int irq_bit, i;
         unsigned char events;
@@ -481,7 +481,7 @@ irqreturn_t via_nubus_irq(int irq, void *dev_id, struct pt_regs *regs)
         for (i = 0, irq_bit = 1 ; i < 7 ; i++, irq_bit <<= 1) {
                 if (events & irq_bit) {
                         via_irq_disable(NUBUS_SOURCE_BASE + i);
-                        m68k_handle_int(NUBUS_SOURCE_BASE + i, regs);
+                        m68k_handle_int(NUBUS_SOURCE_BASE + i);
                         via_irq_enable(NUBUS_SOURCE_BASE + i);
                 }
         }
diff --git a/arch/m68k/mvme147/config.c b/arch/m68k/mvme147/config.c
index 0cd0e5bddcee..4a7df9c3f85a 100644
--- a/arch/m68k/mvme147/config.c
+++ b/arch/m68k/mvme147/config.c
@@ -38,7 +38,7 @@
 
 static void mvme147_get_model(char *model);
 static int  mvme147_get_hardware_list(char *buffer);
-extern void mvme147_sched_init(irqreturn_t (*handler)(int, void *, struct pt_regs *));
+extern void mvme147_sched_init(irq_handler_t handler);
 extern unsigned long mvme147_gettimeoffset (void);
 extern int mvme147_hwclk (int, struct rtc_time *);
 extern int mvme147_set_clock_mmss (unsigned long);
@@ -51,7 +51,7 @@ static int bcd2int (unsigned char b);
 /* Save tick handler routine pointer, will point to do_timer() in
  * kernel/sched.c, called via mvme147_process_int() */
 
-irqreturn_t (*tick_handler)(int, void *, struct pt_regs *);
+irq_handler_t tick_handler;
 
 
 int mvme147_parse_bootinfo(const struct bi_record *bi)
@@ -114,15 +114,15 @@ void __init config_mvme147(void)
 
 /* Using pcc tick timer 1 */
 
-static irqreturn_t mvme147_timer_int (int irq, void *dev_id, struct pt_regs *fp)
+static irqreturn_t mvme147_timer_int (int irq, void *dev_id)
 {
         m147_pcc->t1_int_cntrl = PCC_TIMER_INT_CLR;
         m147_pcc->t1_int_cntrl = PCC_INT_ENAB|PCC_LEVEL_TIMER1;
-        return tick_handler(irq, dev_id, fp);
+        return tick_handler(irq, dev_id);
 }
 
 
-void mvme147_sched_init (irqreturn_t (*timer_routine)(int, void *, struct pt_regs *))
+void mvme147_sched_init (irq_handler_t timer_routine)
 {
         tick_handler = timer_routine;
         request_irq (PCC_IRQ_TIMER1, mvme147_timer_int,
diff --git a/arch/m68k/mvme16x/config.c b/arch/m68k/mvme16x/config.c
index ce2727ed1bc0..c829ebb6b1af 100644
--- a/arch/m68k/mvme16x/config.c
+++ b/arch/m68k/mvme16x/config.c
@@ -42,7 +42,7 @@ static MK48T08ptr_t volatile rtc = (MK48T08ptr_t)MVME_RTC_BASE;
 
 static void mvme16x_get_model(char *model);
 static int  mvme16x_get_hardware_list(char *buffer);
-extern void mvme16x_sched_init(irqreturn_t (*handler)(int, void *, struct pt_regs *));
+extern void mvme16x_sched_init(irq_handler_t handler);
 extern unsigned long mvme16x_gettimeoffset (void);
 extern int mvme16x_hwclk (int, struct rtc_time *);
 extern int mvme16x_set_clock_mmss (unsigned long);
@@ -54,7 +54,7 @@ int bcd2int (unsigned char b);
 /* Save tick handler routine pointer, will point to do_timer() in
  * kernel/sched.c, called via mvme16x_process_int() */
 
-static irqreturn_t (*tick_handler)(int, void *, struct pt_regs *);
+static irq_handler_t tick_handler;
 
 
 unsigned short mvme16x_config;
@@ -190,7 +190,7 @@ void __init config_mvme16x(void)
     }
 }
 
-static irqreturn_t mvme16x_abort_int (int irq, void *dev_id, struct pt_regs *fp)
+static irqreturn_t mvme16x_abort_int (int irq, void *dev_id)
 {
         p_bdid p = &mvme_bdid;
         unsigned long *new = (unsigned long *)vectors;
@@ -218,13 +218,13 @@ static irqreturn_t mvme16x_abort_int (int irq, void *dev_id, struct pt_regs *fp)
         return IRQ_HANDLED;
 }
 
-static irqreturn_t mvme16x_timer_int (int irq, void *dev_id, struct pt_regs *fp)
+static irqreturn_t mvme16x_timer_int (int irq, void *dev_id)
 {
     *(volatile unsigned char *)0xfff4201b |= 8;
-    return tick_handler(irq, dev_id, fp);
+    return tick_handler(irq, dev_id);
 }
 
-void mvme16x_sched_init (irqreturn_t (*timer_routine)(int, void *, struct pt_regs *))
+void mvme16x_sched_init (irq_handler_t timer_routine)
 {
     p_bdid p = &mvme_bdid;
     int irq;
diff --git a/arch/m68k/q40/config.c b/arch/m68k/q40/config.c
index 9a1827876408..92f873cc7060 100644
--- a/arch/m68k/q40/config.c
+++ b/arch/m68k/q40/config.c
@@ -39,7 +39,7 @@ extern irqreturn_t q40_process_int (int level, struct pt_regs *regs);
 extern void q40_init_IRQ (void);
 static void q40_get_model(char *model);
 static int  q40_get_hardware_list(char *buffer);
-extern void q40_sched_init(irqreturn_t (*handler)(int, void *, struct pt_regs *));
+extern void q40_sched_init(irq_handler_t handler);
 
 extern unsigned long q40_gettimeoffset (void);
 extern int q40_hwclk (int, struct rtc_time *);
diff --git a/arch/m68k/q40/q40ints.c b/arch/m68k/q40/q40ints.c
index 472f41c4158b..31cc07d8cec4 100644
--- a/arch/m68k/q40/q40ints.c
+++ b/arch/m68k/q40/q40ints.c
@@ -125,9 +125,9 @@ void q40_mksound(unsigned int hz, unsigned int ticks)
         sound_ticks = ticks << 1;
 }
 
-static irqreturn_t (*q40_timer_routine)(int, void *, struct pt_regs *);
+static irq_handler_t q40_timer_routine;
 
-static irqreturn_t q40_timer_int (int irq, void * dev, struct pt_regs * regs)
+static irqreturn_t q40_timer_int (int irq, void * dev)
 {
         ql_ticks = ql_ticks ? 0 : 1;
         if (sound_ticks) {
@@ -138,11 +138,11 @@ static irqreturn_t q40_timer_int (int irq, void * dev, struct pt_regs * regs)
         }
 
         if (!ql_ticks)
-                q40_timer_routine(irq, dev, regs);
+                q40_timer_routine(irq, dev);
         return IRQ_HANDLED;
 }
 
-void q40_sched_init (irqreturn_t (*timer_routine)(int, void *, struct pt_regs *))
+void q40_sched_init (irq_handler_t timer_routine)
 {
         int timer_irq;
 
@@ -218,11 +218,11 @@ static void q40_irq_handler(unsigned int irq, struct pt_regs *fp)
         switch (irq) {
         case 4:
         case 6:
-                m68k_handle_int(Q40_IRQ_SAMPLE, fp);
+                __m68k_handle_int(Q40_IRQ_SAMPLE, fp);
                 return;
         }
         if (mir & Q40_IRQ_FRAME_MASK) {
-                m68k_handle_int(Q40_IRQ_FRAME, fp);
+                __m68k_handle_int(Q40_IRQ_FRAME, fp);
                 master_outb(-1, FRAME_CLEAR_REG);
         }
         if ((mir & Q40_IRQ_SER_MASK) || (mir & Q40_IRQ_EXT_MASK)) {
@@ -257,7 +257,7 @@ static void q40_irq_handler(unsigned int irq, struct pt_regs *fp)
                                         goto iirq;
                                 }
                                 q40_state[irq] |= IRQ_INPROGRESS;
-                                m68k_handle_int(irq, fp);
+                                __m68k_handle_int(irq, fp);
                                 q40_state[irq] &= ~IRQ_INPROGRESS;
 
                                 /* naively enable everything, if that fails than    */
@@ -288,7 +288,7 @@ static void q40_irq_handler(unsigned int irq, struct pt_regs *fp)
         mir = master_inb(IIRQ_REG);
         /* should test whether keyboard irq is really enabled, doing it in defhand */
         if (mir & Q40_IRQ_KEYB_MASK)
-                m68k_handle_int(Q40_IRQ_KEYBOARD, fp);
+                __m68k_handle_int(Q40_IRQ_KEYBOARD, fp);
 
         return;
 }
diff --git a/arch/m68k/sun3/config.c b/arch/m68k/sun3/config.c
index d09d03b3d956..4851b8437a87 100644
--- a/arch/m68k/sun3/config.c
+++ b/arch/m68k/sun3/config.c
@@ -35,7 +35,7 @@ extern char _text, _end;
 char sun3_reserved_pmeg[SUN3_PMEGS_NUM];
 
 extern unsigned long sun3_gettimeoffset(void);
-extern void sun3_sched_init(irqreturn_t (*handler)(int, void *, struct pt_regs *));
+extern void sun3_sched_init(irq_handler_t handler);
 extern void sun3_get_model (char* model);
 extern void idprom_init (void);
 extern int sun3_hwclk(int set, struct rtc_time *t);
@@ -162,7 +162,7 @@ void __init config_sun3(void)
         sun3_bootmem_alloc(memory_start, memory_end);
 }
 
-void __init sun3_sched_init(irqreturn_t (*timer_routine)(int, void *, struct pt_regs *))
+void __init sun3_sched_init(irq_handler_t timer_routine)
 {
         sun3_disable_interrupts();
         intersil_clock->cmd_reg=(INTERSIL_RUN|INTERSIL_INT_DISABLE|INTERSIL_24H_MODE);
diff --git a/arch/m68k/sun3/sun3ints.c b/arch/m68k/sun3/sun3ints.c
index dc4ea7e074a6..baf74e8de8b5 100644
--- a/arch/m68k/sun3/sun3ints.c
+++ b/arch/m68k/sun3/sun3ints.c
@@ -15,6 +15,7 @@
 #include <asm/intersil.h>
 #include <asm/oplib.h>
 #include <asm/sun3ints.h>
+#include <asm/irq_regs.h>
 #include <linux/seq_file.h>
 
 extern void sun3_leds (unsigned char);
@@ -48,7 +49,7 @@ void sun3_disable_irq(unsigned int irq)
         *sun3_intreg &= ~(1 << irq);
 }
 
-static irqreturn_t sun3_int7(int irq, void *dev_id, struct pt_regs *fp)
+static irqreturn_t sun3_int7(int irq, void *dev_id)
 {
         *sun3_intreg |=  (1 << irq);
         if (!(kstat_cpu(0).irqs[irq] % 2000))
@@ -56,7 +57,7 @@ static irqreturn_t sun3_int7(int irq, void *dev_id, struct pt_regs *fp)
         return IRQ_HANDLED;
 }
 
-static irqreturn_t sun3_int5(int irq, void *dev_id, struct pt_regs *fp)
+static irqreturn_t sun3_int5(int irq, void *dev_id)
 {
 #ifdef CONFIG_SUN3
         intersil_clear();
@@ -67,14 +68,14 @@ static irqreturn_t sun3_int5(int irq, void *dev_id, struct pt_regs *fp)
 #endif
         do_timer(1);
 #ifndef CONFIG_SMP
-        update_process_times(user_mode(fp));
+        update_process_times(user_mode(get_irq_regs()));
 #endif
         if (!(kstat_cpu(0).irqs[irq] % 20))
                 sun3_leds(led_pattern[(kstat_cpu(0).irqs[irq] % 160) / 20]);
         return IRQ_HANDLED;
 }
 
-static irqreturn_t sun3_vec255(int irq, void *dev_id, struct pt_regs *fp)
+static irqreturn_t sun3_vec255(int irq, void *dev_id)
 {
 //      intersil_clear();
         return IRQ_HANDLED;
@@ -84,7 +85,7 @@ static void sun3_inthandle(unsigned int irq, struct pt_regs *fp)
 {
         *sun3_intreg &= ~(1 << irq);
 
-        m68k_handle_int(irq, fp);
+        __m68k_handle_int(irq, fp);
 }
 
 static struct irq_controller sun3_irq_controller = {
diff --git a/arch/m68k/sun3x/time.c b/arch/m68k/sun3x/time.c
index 6f4204fbecd7..f5eaafb00d21 100644
--- a/arch/m68k/sun3x/time.c
+++ b/arch/m68k/sun3x/time.c
@@ -90,7 +90,7 @@ static void sun3x_timer_tick(int irq, void *dev_id, struct pt_regs *regs)
 }
 #endif
 
-void __init sun3x_sched_init(irqreturn_t (*vector)(int, void *, struct pt_regs *))
+void __init sun3x_sched_init(irq_handler_t vector)
 {
 
         sun3_disable_interrupts();
diff --git a/arch/m68k/sun3x/time.h b/arch/m68k/sun3x/time.h
index e7e43b4ec4a1..6909e1297534 100644
--- a/arch/m68k/sun3x/time.h
+++ b/arch/m68k/sun3x/time.h
@@ -3,7 +3,7 @@
 
 extern int sun3x_hwclk(int set, struct rtc_time *t);
 unsigned long sun3x_gettimeoffset (void);
-void sun3x_sched_init(irqreturn_t (*vector)(int, void *, struct pt_regs *));
+void sun3x_sched_init(irq_handler_t vector);
 
 struct mostek_dt {
         volatile unsigned char csr;
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 8a49884bd5ec..14af6cce2fa2 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -1010,11 +1010,6 @@ endchoice
 config ARC32
         bool
 
-config AU1X00_USB_DEVICE
-        bool
-        depends on MIPS_PB1500 || MIPS_PB1100 || MIPS_PB1000
-        default n
-
 config BOOT_ELF32
         bool
 
@@ -1465,10 +1460,8 @@ config MIPS_MT_DISABLED
           the option of an MT-enabled processor this option will be the only
           option in this menu.
 
-config MIPS_MT_SMTC
-        bool "SMTC: Use all TCs on all VPEs for SMP"
-        depends on CPU_MIPS32_R2
-        #depends on CPU_MIPS64_R2               # once there is hardware ...
+config MIPS_MT_SMP
+        bool "Use 1 TC on each available VPE for SMP"
         depends on SYS_SUPPORTS_MULTITHREADING
         select CPU_MIPSR2_IRQ_VI
         select CPU_MIPSR2_SRS
@@ -1476,11 +1469,13 @@ config MIPS_MT_SMTC
         select SMP
         select SYS_SUPPORTS_SMP
         help
-          This is a kernel model which is known a SMTC or lately has been
-          marketesed into SMVP.
+          This is a kernel model which is also known a VSMP or lately
+          has been marketesed into SMVP.
 
-config MIPS_MT_SMP
-        bool "Use 1 TC on each available VPE for SMP"
+config MIPS_MT_SMTC
+        bool "SMTC: Use all TCs on all VPEs for SMP"
+        depends on CPU_MIPS32_R2
+        #depends on CPU_MIPS64_R2               # once there is hardware ...
         depends on SYS_SUPPORTS_MULTITHREADING
         select CPU_MIPSR2_IRQ_VI
         select CPU_MIPSR2_SRS
@@ -1488,8 +1483,8 @@ config MIPS_MT_SMP
         select SMP
         select SYS_SUPPORTS_SMP
         help
-          This is a kernel model which is also known a VSMP or lately
-          has been marketesed into SMVP.
+          This is a kernel model which is known a SMTC or lately has been
+          marketesed into SMVP.
 
 config MIPS_VPE_LOADER
         bool "VPE loader support."
diff --git a/arch/mips/au1000/common/Makefile b/arch/mips/au1000/common/Makefile
index bf682f50b859..4c35525edb4f 100644
--- a/arch/mips/au1000/common/Makefile
+++ b/arch/mips/au1000/common/Makefile
@@ -10,6 +10,5 @@ obj-y += prom.o irq.o puts.o time.o reset.o \
         au1xxx_irqmap.o clocks.o platform.o power.o setup.o \
         sleeper.o cputable.o dma.o dbdma.o gpio.o
 
-obj-$(CONFIG_AU1X00_USB_DEVICE) += usbdev.o
 obj-$(CONFIG_KGDB)              += dbg_io.o
 obj-$(CONFIG_PCI)               += pci.o
diff --git a/arch/mips/au1000/common/dma.c b/arch/mips/au1000/common/dma.c
index fb7c47c1585d..c78260d4e837 100644
--- a/arch/mips/au1000/common/dma.c
+++ b/arch/mips/au1000/common/dma.c
@@ -160,7 +160,7 @@ void dump_au1000_dma_channel(unsigned int dmanr)
  * Requests the DMA done IRQ if irqhandler != NULL.
  */
 int request_au1000_dma(int dev_id, const char *dev_str,
-                       irqreturn_t (*irqhandler)(int, void *, struct pt_regs *),
+                       irq_handler_t irqhandler,
                        unsigned long irqflags,
                        void *irq_dev_id)
 {
diff --git a/arch/mips/au1000/common/irq.c b/arch/mips/au1000/common/irq.c
index 316722ee8cf5..2abe132bb07d 100644
--- a/arch/mips/au1000/common/irq.c
+++ b/arch/mips/au1000/common/irq.c
@@ -67,7 +67,7 @@
 
 extern void set_debug_traps(void);
 extern irq_cpustat_t irq_stat [NR_CPUS];
-extern void mips_timer_interrupt(struct pt_regs *regs);
+extern void mips_timer_interrupt(void);
 
 static void setup_local_irq(unsigned int irq, int type, int int_req);
 static unsigned int startup_irq(unsigned int irq);
@@ -81,10 +81,6 @@ inline void local_disable_irq(unsigned int irq_nr);
 
 void    (*board_init_irq)(void);
 
-#ifdef CONFIG_PM
-extern irqreturn_t counter0_irq(int irq, void *dev_id, struct pt_regs *regs);
-#endif
-
 static DEFINE_SPINLOCK(irq_lock);
 
 
@@ -292,7 +288,7 @@ static struct irq_chip level_irq_type = {
 };
 
 #ifdef CONFIG_PM
-void startup_match20_interrupt(irqreturn_t (*handler)(int, void *, struct pt_regs *))
+void startup_match20_interrupt(irq_handler_t handler)
 {
         struct irq_desc *desc = &irq_desc[AU1000_TOY_MATCH2_INT];
 
@@ -501,14 +497,15 @@ void __init arch_init_irq(void)
  * intcX_reqX_irqdispatch().
  */
 
-void intc0_req0_irqdispatch(struct pt_regs *regs)
+static void intc0_req0_irqdispatch(void)
 {
         int irq = 0;
         static unsigned long intc0_req0 = 0;
 
         intc0_req0 |= au_readl(IC0_REQ0INT);
 
-        if (!intc0_req0) return;
+        if (!intc0_req0)
+                return;
 #ifdef AU1000_USB_DEV_REQ_INT
         /*
          * Because of the tight timing of SETUP token to reply
@@ -517,28 +514,29 @@ void intc0_req0_irqdispatch(struct pt_regs *regs)
          */
         if ((intc0_req0 & (1<<AU1000_USB_DEV_REQ_INT))) {
                 intc0_req0 &= ~(1<<AU1000_USB_DEV_REQ_INT);
-                do_IRQ(AU1000_USB_DEV_REQ_INT, regs);
+                do_IRQ(AU1000_USB_DEV_REQ_INT);
                 return;
         }
 #endif
         irq = au_ffs(intc0_req0) - 1;
         intc0_req0 &= ~(1<<irq);
-        do_IRQ(irq, regs);
+        do_IRQ(irq);
 }
 
 
-void intc0_req1_irqdispatch(struct pt_regs *regs)
+static void intc0_req1_irqdispatch(void)
 {
         int irq = 0;
         static unsigned long intc0_req1 = 0;
 
         intc0_req1 |= au_readl(IC0_REQ1INT);
 
-        if (!intc0_req1) return;
+        if (!intc0_req1)
+                return;
 
         irq = au_ffs(intc0_req1) - 1;
         intc0_req1 &= ~(1<<irq);
-        do_IRQ(irq, regs);
+        do_IRQ(irq);
 }
 
 
@@ -546,35 +544,37 @@ void intc0_req1_irqdispatch(struct pt_regs *regs)
  * Interrupt Controller 1:
  * interrupts 32 - 63
  */
-void intc1_req0_irqdispatch(struct pt_regs *regs)
+static void intc1_req0_irqdispatch(void)
 {
         int irq = 0;
         static unsigned long intc1_req0 = 0;
 
         intc1_req0 |= au_readl(IC1_REQ0INT);
 
-        if (!intc1_req0) return;
+        if (!intc1_req0)
+                return;
 
         irq = au_ffs(intc1_req0) - 1;
         intc1_req0 &= ~(1<<irq);
         irq += 32;
-        do_IRQ(irq, regs);
+        do_IRQ(irq);
 }
 
 
-void intc1_req1_irqdispatch(struct pt_regs *regs)
+static void intc1_req1_irqdispatch(void)
 {
         int irq = 0;
         static unsigned long intc1_req1 = 0;
 
         intc1_req1 |= au_readl(IC1_REQ1INT);
 
-        if (!intc1_req1) return;
+        if (!intc1_req1)
+                return;
 
         irq = au_ffs(intc1_req1) - 1;
         intc1_req1 &= ~(1<<irq);
         irq += 32;
-        do_IRQ(irq, regs);
+        do_IRQ(irq);
 }
 
 #ifdef CONFIG_PM
@@ -660,20 +660,20 @@ restore_au1xxx_intctl(void)
 }
 #endif /* CONFIG_PM */
 
-asmlinkage void plat_irq_dispatch(struct pt_regs *regs)
+asmlinkage void plat_irq_dispatch(void)
 {
         unsigned int pending = read_c0_status() & read_c0_cause() & ST0_IM;
 
         if (pending & CAUSEF_IP7)
-                mips_timer_interrupt(regs);
+                mips_timer_interrupt();
         else if (pending & CAUSEF_IP2)
-                intc0_req0_irqdispatch(regs);
+                intc0_req0_irqdispatch();
         else if (pending & CAUSEF_IP3)
-                intc0_req1_irqdispatch(regs);
+                intc0_req1_irqdispatch();
         else if (pending & CAUSEF_IP4)
-                intc1_req0_irqdispatch(regs);
+                intc1_req0_irqdispatch();
         else if (pending  & CAUSEF_IP5)
-                intc1_req1_irqdispatch(regs);
+                intc1_req1_irqdispatch();
         else
-                spurious_interrupt(regs);
+                spurious_interrupt();
 }
diff --git a/arch/mips/au1000/common/time.c b/arch/mips/au1000/common/time.c
index 0a067f3113a5..94f09194d63d 100644
--- a/arch/mips/au1000/common/time.c
+++ b/arch/mips/au1000/common/time.c
@@ -41,7 +41,6 @@
 
 #include <asm/compiler.h>
 #include <asm/mipsregs.h>
-#include <asm/ptrace.h>
 #include <asm/time.h>
 #include <asm/div64.h>
 #include <asm/mach-au1x00/au1000.h>
@@ -62,7 +61,7 @@ static unsigned int timerhi = 0, timerlo = 0;
 #error "unsupported HZ value! Must be in [100,1000]"
 #endif
 #define MATCH20_INC (328*100/HZ) /* magic number 328 is for HZ=100... */
-extern void startup_match20_interrupt(irqreturn_t (*handler)(int, void *, struct pt_regs *));
+extern void startup_match20_interrupt(irq_handler_t handler);
 static unsigned long last_pc0, last_match20;
 #endif
 
@@ -79,7 +78,8 @@ static inline void ack_r4ktimer(unsigned long newval)
  * is provably more robust.
  */
 unsigned long wtimer;
-void mips_timer_interrupt(struct pt_regs *regs)
+
+void mips_timer_interrupt(void)
 {
         int irq = 63;
         unsigned long count;
@@ -98,7 +98,7 @@ void mips_timer_interrupt(struct pt_regs *regs)
                 kstat_this_cpu.irqs[irq]++;
                 do_timer(1);
 #ifndef CONFIG_SMP
-                update_process_times(user_mode(regs));
+                update_process_times(user_mode(get_irq_regs()));
 #endif
                 r4k_cur += r4k_offset;
                 ack_r4ktimer(r4k_cur);
@@ -115,7 +115,7 @@ null:
 }
 
 #ifdef CONFIG_PM
-irqreturn_t counter0_irq(int irq, void *dev_id, struct pt_regs *regs)
+irqreturn_t counter0_irq(int irq, void *dev_id)
 {
         unsigned long pc0;
         int time_elapsed;
@@ -139,7 +139,7 @@ irqreturn_t counter0_irq(int irq, void *dev_id, struct pt_regs *regs)
         while (time_elapsed > 0) {
                 do_timer(1);
 #ifndef CONFIG_SMP
-                update_process_times(user_mode(regs));
+                update_process_times(user_mode(get_irq_regs()));
 #endif
                 time_elapsed -= MATCH20_INC;
                 last_match20 += MATCH20_INC;
@@ -158,7 +158,7 @@ irqreturn_t counter0_irq(int irq, void *dev_id, struct pt_regs *regs)
                 jiffie_drift -= 999;
                 do_timer(1); /* increment jiffies by one */
 #ifndef CONFIG_SMP
-                update_process_times(user_mode(regs));
+                update_process_times(user_mode(get_irq_regs()));
 #endif
         }
 
diff --git a/arch/mips/au1000/common/usbdev.c b/arch/mips/au1000/common/usbdev.c
deleted file mode 100644
index 63bcb3a95dc7..000000000000
--- a/arch/mips/au1000/common/usbdev.c
+++ /dev/null
@@ -1,1555 +0,0 @@
-/*
- * BRIEF MODULE DESCRIPTION
- *      Au1000 USB Device-Side (device layer)
- *
- * Copyright 2001-2002 MontaVista Software Inc.
- * Author: MontaVista Software, Inc.
- *              stevel@mvista.com or source@mvista.com
- *
- *  This program is free software; you can redistribute  it and/or modify it
- *  under  the terms of  the GNU General  Public License as published by the
- *  Free Software Foundation;  either version 2 of the  License, or (at your
- *  option) any later version.
- *
- *  THIS  SOFTWARE  IS PROVIDED   ``AS  IS'' AND   ANY  EXPRESS OR IMPLIED
- *  WARRANTIES,   INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
- *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
- *  NO  EVENT  SHALL   THE AUTHOR  BE    LIABLE FOR ANY   DIRECT, INDIRECT,
- *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- *  NOT LIMITED   TO, PROCUREMENT OF  SUBSTITUTE GOODS  OR SERVICES; LOSS OF
- *  USE, DATA,  OR PROFITS; OR  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
- *  ANY THEORY OF LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT
- *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
- *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- *  You should have received a copy of the  GNU General Public License along
- *  with this program; if not, write  to the Free Software Foundation, Inc.,
- *  675 Mass Ave, Cambridge, MA 02139, USA.
- */
-#include <linux/kernel.h>
-#include <linux/ioport.h>
-#include <linux/sched.h>
-#include <linux/signal.h>
-#include <linux/errno.h>
-#include <linux/poll.h>
-#include <linux/init.h>
-#include <linux/slab.h>
-#include <linux/fcntl.h>
-#include <linux/module.h>
-#include <linux/spinlock.h>
-#include <linux/list.h>
-#include <linux/smp_lock.h>
-#define DEBUG
-#include <linux/usb.h>
-
-#include <asm/io.h>
-#include <asm/uaccess.h>
-#include <asm/irq.h>
-#include <asm/mipsregs.h>
-#include <asm/au1000.h>
-#include <asm/au1000_dma.h>
-#include <asm/au1000_usbdev.h>
-
-#ifdef DEBUG
-#undef VDEBUG
-#ifdef VDEBUG
-#define vdbg(fmt, arg...) printk(KERN_DEBUG __FILE__ ": " fmt "\n" , ## arg)
-#else
-#define vdbg(fmt, arg...) do {} while (0)
-#endif
-#else
-#define vdbg(fmt, arg...) do {} while (0)
-#endif
-
-#define ALLOC_FLAGS (in_interrupt () ? GFP_ATOMIC : GFP_KERNEL)
-
-#define EP_FIFO_DEPTH 8
-
-typedef enum {
-        SETUP_STAGE = 0,
-        DATA_STAGE,
-        STATUS_STAGE
-} ep0_stage_t;
-
-typedef struct {
-        int read_fifo;
-        int write_fifo;
-        int ctrl_stat;
-        int read_fifo_status;
-        int write_fifo_status;
-} endpoint_reg_t;
-
-typedef struct {
-        usbdev_pkt_t *head;
-        usbdev_pkt_t *tail;
-        int count;
-} pkt_list_t;
-
-typedef struct {
-        int active;
-        struct usb_endpoint_descriptor *desc;
-        endpoint_reg_t *reg;
-        /* Only one of these are used, unless this is the control ep */
-        pkt_list_t inlist;
-        pkt_list_t outlist;
-        unsigned int indma, outdma; /* DMA channel numbers for IN, OUT */
-        /* following are extracted from endpoint descriptor for easy access */
-        int max_pkt_size;
-        int type;
-        int direction;
-        /* WE assign endpoint addresses! */
-        int address;
-        spinlock_t lock;
-} endpoint_t;
-
-
-static struct usb_dev {
-        endpoint_t ep[6];
-        ep0_stage_t ep0_stage;
-
-        struct usb_device_descriptor *   dev_desc;
-        struct usb_interface_descriptor* if_desc;
-        struct usb_config_descriptor *   conf_desc;
-        u8 *                             full_conf_desc;
-        struct usb_string_descriptor *   str_desc[6];
-
-        /* callback to function layer */
-        void (*func_cb)(usbdev_cb_type_t type, unsigned long arg,
-                        void *cb_data);
-        void* cb_data;
-
-        usbdev_state_t state;   // device state
-        int suspended;          // suspended flag
-        int address;            // device address
-        int interface;
-        int num_ep;
-        u8 alternate_setting;
-        u8 configuration;       // configuration value
-        int remote_wakeup_en;
-} usbdev;
-
-
-static endpoint_reg_t ep_reg[] = {
-        // FIFO's 0 and 1 are EP0 default control
-        {USBD_EP0RD, USBD_EP0WR, USBD_EP0CS, USBD_EP0RDSTAT, USBD_EP0WRSTAT },
-        {0},
-        // FIFO 2 is EP2, IN
-        { -1, USBD_EP2WR, USBD_EP2CS, -1, USBD_EP2WRSTAT },
-        // FIFO 3 is EP3, IN
-        {    -1,     USBD_EP3WR, USBD_EP3CS,     -1,         USBD_EP3WRSTAT },
-        // FIFO 4 is EP4, OUT
-        {USBD_EP4RD,     -1,     USBD_EP4CS, USBD_EP4RDSTAT,     -1         },
-        // FIFO 5 is EP5, OUT
-        {USBD_EP5RD,     -1,     USBD_EP5CS, USBD_EP5RDSTAT,     -1         }
-};
-
-static struct {
-        unsigned int id;
-        const char *str;
-} ep_dma_id[] = {
-        { DMA_ID_USBDEV_EP0_TX, "USBDev EP0 IN" },
-        { DMA_ID_USBDEV_EP0_RX, "USBDev EP0 OUT" },
-        { DMA_ID_USBDEV_EP2_TX, "USBDev EP2 IN" },
-        { DMA_ID_USBDEV_EP3_TX, "USBDev EP3 IN" },
-        { DMA_ID_USBDEV_EP4_RX, "USBDev EP4 OUT" },
-        { DMA_ID_USBDEV_EP5_RX, "USBDev EP5 OUT" }
-};
-
-#define DIR_OUT 0
-#define DIR_IN  (1<<3)
-
-#define CONTROL_EP USB_ENDPOINT_XFER_CONTROL
-#define BULK_EP    USB_ENDPOINT_XFER_BULK
-
-static inline endpoint_t *
-epaddr_to_ep(struct usb_dev* dev, int ep_addr)
-{
-        if (ep_addr >= 0 && ep_addr < 2)
-                return &dev->ep[0];
-        if (ep_addr < 6)
-                return &dev->ep[ep_addr];
-        return NULL;
-}
-
-static const char* std_req_name[] = {
-        "GET_STATUS",
-        "CLEAR_FEATURE",
-        "RESERVED",
-        "SET_FEATURE",
-        "RESERVED",
-        "SET_ADDRESS",
-        "GET_DESCRIPTOR",
-        "SET_DESCRIPTOR",
-        "GET_CONFIGURATION",
-        "SET_CONFIGURATION",
-        "GET_INTERFACE",
-        "SET_INTERFACE",
-        "SYNCH_FRAME"
-};
-
-static inline const char*
-get_std_req_name(int req)
-{
-        return (req >= 0 && req <= 12) ? std_req_name[req] : "UNKNOWN";
-}
-
-#if 0
-static void
-dump_setup(struct usb_ctrlrequest* s)
-{
-        dbg("%s: requesttype=%d", __FUNCTION__, s->requesttype);
-        dbg("%s: request=%d %s", __FUNCTION__, s->request,
-            get_std_req_name(s->request));
-        dbg("%s: value=0x%04x", __FUNCTION__, s->wValue);
-        dbg("%s: index=%d", __FUNCTION__, s->index);
-        dbg("%s: length=%d", __FUNCTION__, s->length);
-}
-#endif
-
-static inline usbdev_pkt_t *
-alloc_packet(endpoint_t * ep, int data_size, void* data)
-{
-        usbdev_pkt_t* pkt = kmalloc(sizeof(usbdev_pkt_t) + data_size,
-                                    ALLOC_FLAGS);
-        if (!pkt)
-                return NULL;
-        pkt->ep_addr = ep->address;
-        pkt->size = data_size;
-        pkt->status = 0;
-        pkt->next = NULL;
-        if (data)
-                memcpy(pkt->payload, data, data_size);
-
-        return pkt;
-}
-
-
-/*
- * Link a packet to the tail of the enpoint's packet list.
- * EP spinlock must be held when calling.
- */
-static void
-link_tail(endpoint_t * ep, pkt_list_t * list, usbdev_pkt_t * pkt)
-{
-        if (!list->tail) {
-                list->head = list->tail = pkt;
-                list->count = 1;
-        } else {
-                list->tail->next = pkt;
-                list->tail = pkt;
-                list->count++;
-        }
-}
-
-/*
- * Unlink and return a packet from the head of the given packet
- * list. It is the responsibility of the caller to free the packet.
- * EP spinlock must be held when calling.
- */
-static usbdev_pkt_t *
-unlink_head(pkt_list_t * list)
-{
-        usbdev_pkt_t *pkt;
-
-        pkt = list->head;
-        if (!pkt || !list->count) {
-                return NULL;
-        }
-
-        list->head = pkt->next;
-        if (!list->head) {
-                list->head = list->tail = NULL;
-                list->count = 0;
-        } else
-                list->count--;
-
-        return pkt;
-}
-
-/*
- * Create and attach a new packet to the tail of the enpoint's
- * packet list. EP spinlock must be held when calling.
- */
-static usbdev_pkt_t *
-add_packet(endpoint_t * ep, pkt_list_t * list, int size)
-{
-        usbdev_pkt_t *pkt = alloc_packet(ep, size, NULL);
-        if (!pkt)
-                return NULL;
-
-        link_tail(ep, list, pkt);
-        return pkt;
-}
-
-
-/*
- * Unlink and free a packet from the head of the enpoint's
- * packet list. EP spinlock must be held when calling.
- */
-static inline void
-free_packet(pkt_list_t * list)
-{
-        kfree(unlink_head(list));
-}
-
-/* EP spinlock must be held when calling. */
-static inline void
-flush_pkt_list(pkt_list_t * list)
-{
-        while (list->count)
-                free_packet(list);
-}
-
-/* EP spinlock must be held when calling */
-static inline void
-flush_write_fifo(endpoint_t * ep)
-{
-        if (ep->reg->write_fifo_status >= 0) {
-                au_writel(USBDEV_FSTAT_FLUSH | USBDEV_FSTAT_UF |
-                          USBDEV_FSTAT_OF,
-                          ep->reg->write_fifo_status);
-                //udelay(100);
-                //au_writel(USBDEV_FSTAT_UF | USBDEV_FSTAT_OF,
-                //        ep->reg->write_fifo_status);
-        }
-}
-
-/* EP spinlock must be held when calling */
-static inline void
-flush_read_fifo(endpoint_t * ep)
-{
-        if (ep->reg->read_fifo_status >= 0) {
-                au_writel(USBDEV_FSTAT_FLUSH | USBDEV_FSTAT_UF |
-                          USBDEV_FSTAT_OF,
-                          ep->reg->read_fifo_status);
-                //udelay(100);
-                //au_writel(USBDEV_FSTAT_UF | USBDEV_FSTAT_OF,
-                //        ep->reg->read_fifo_status);
-        }
-}
-
-
-/* EP spinlock must be held when calling. */
-static void
-endpoint_flush(endpoint_t * ep)
-{
-        // First, flush all packets
-        flush_pkt_list(&ep->inlist);
-        flush_pkt_list(&ep->outlist);
-
-        // Now flush the endpoint's h/w FIFO(s)
-        flush_write_fifo(ep);
-        flush_read_fifo(ep);
-}
-
-/* EP spinlock must be held when calling. */
-static void
-endpoint_stall(endpoint_t * ep)
-{
-        u32 cs;
-
-        warn("%s", __FUNCTION__);
-
-        cs = au_readl(ep->reg->ctrl_stat) | USBDEV_CS_STALL;
-        au_writel(cs, ep->reg->ctrl_stat);
-}
-
-/* EP spinlock must be held when calling. */
-static void
-endpoint_unstall(endpoint_t * ep)
-{
-        u32 cs;
-
-        warn("%s", __FUNCTION__);
-
-        cs = au_readl(ep->reg->ctrl_stat) & ~USBDEV_CS_STALL;
-        au_writel(cs, ep->reg->ctrl_stat);
-}
-
-static void
-endpoint_reset_datatoggle(endpoint_t * ep)
-{
-        // FIXME: is this possible?
-}
-
-
-/* EP spinlock must be held when calling. */
-static int
-endpoint_fifo_read(endpoint_t * ep)
-{
-        int read_count = 0;
-        u8 *bufptr;
-        usbdev_pkt_t *pkt = ep->outlist.tail;
-
-        if (!pkt)
-                return -EINVAL;
-
-        bufptr = &pkt->payload[pkt->size];
-        while (au_readl(ep->reg->read_fifo_status) & USBDEV_FSTAT_FCNT_MASK) {
-                *bufptr++ = au_readl(ep->reg->read_fifo) & 0xff;
-                read_count++;
-                pkt->size++;
-        }
-
-        return read_count;
-}
-
-#if 0
-/* EP spinlock must be held when calling. */
-static int
-endpoint_fifo_write(endpoint_t * ep, int index)
-{
-        int write_count = 0;
-        u8 *bufptr;
-        usbdev_pkt_t *pkt = ep->inlist.head;
-
-        if (!pkt)
-                return -EINVAL;
-
-        bufptr = &pkt->payload[index];
-        while ((au_readl(ep->reg->write_fifo_status) &
-                USBDEV_FSTAT_FCNT_MASK) < EP_FIFO_DEPTH) {
-                if (bufptr < pkt->payload + pkt->size) {
-                        au_writel(*bufptr++, ep->reg->write_fifo);
-                        write_count++;
-                } else {
-                        break;
-                }
-        }
-
-        return write_count;
-}
-#endif
-
-/*
- * This routine is called to restart transmission of a packet.
- * The endpoint's TSIZE must be set to the new packet's size,
- * and DMA to the write FIFO needs to be restarted.
- * EP spinlock must be held when calling.
- */
-static void
-kickstart_send_packet(endpoint_t * ep)
-{
-        u32 cs;
-        usbdev_pkt_t *pkt = ep->inlist.head;
-
-        vdbg("%s: ep%d, pkt=%p", __FUNCTION__, ep->address, pkt);
-
-        if (!pkt) {
-                err("%s: head=NULL! list->count=%d", __FUNCTION__,
-                    ep->inlist.count);
-                return;
-        }
-
-        dma_cache_wback_inv((unsigned long)pkt->payload, pkt->size);
-
-        /*
-         * make sure FIFO is empty
-         */
-        flush_write_fifo(ep);
-
-        cs = au_readl(ep->reg->ctrl_stat) & USBDEV_CS_STALL;
-        cs |= (pkt->size << USBDEV_CS_TSIZE_BIT);
-        au_writel(cs, ep->reg->ctrl_stat);
-
-        if (get_dma_active_buffer(ep->indma) == 1) {
-                set_dma_count1(ep->indma, pkt->size);
-                set_dma_addr1(ep->indma, virt_to_phys(pkt->payload));
-                enable_dma_buffer1(ep->indma);  // reenable
-        } else {
-                set_dma_count0(ep->indma, pkt->size);
-                set_dma_addr0(ep->indma, virt_to_phys(pkt->payload));
-                enable_dma_buffer0(ep->indma);  // reenable
-        }
-        if (dma_halted(ep->indma))
-                start_dma(ep->indma);
-}
-
-
-/*
- * This routine is called when a packet in the inlist has been
- * completed. Frees the completed packet and starts sending the
- * next. EP spinlock must be held when calling.
- */
-static usbdev_pkt_t *
-send_packet_complete(endpoint_t * ep)
-{
-        usbdev_pkt_t *pkt = unlink_head(&ep->inlist);
-
-        if (pkt) {
-                pkt->status =
-                        (au_readl(ep->reg->ctrl_stat) & USBDEV_CS_NAK) ?
-                        PKT_STATUS_NAK : PKT_STATUS_ACK;
-
-                vdbg("%s: ep%d, %s pkt=%p, list count=%d", __FUNCTION__,
-                     ep->address, (pkt->status & PKT_STATUS_NAK) ?
-                     "NAK" : "ACK", pkt, ep->inlist.count);
-        }
-
-        /*
-         * The write fifo should already be drained if things are
-         * working right, but flush it anyway just in case.
-         */
-        flush_write_fifo(ep);
-
-        // begin transmitting next packet in the inlist
-        if (ep->inlist.count) {
-                kickstart_send_packet(ep);
-        }
-
-        return pkt;
-}
-
-/*
- * Add a new packet to the tail of the given ep's packet
- * inlist. The transmit complete interrupt frees packets from
- * the head of this list. EP spinlock must be held when calling.
- */
-static int
-send_packet(struct usb_dev* dev, usbdev_pkt_t *pkt, int async)
-{
-        pkt_list_t *list;
-        endpoint_t* ep;
-
-        if (!pkt || !(ep = epaddr_to_ep(dev, pkt->ep_addr)))
-                return -EINVAL;
-
-        if (!pkt->size)
-                return 0;
-
-        list = &ep->inlist;
-
-        if (!async && list->count) {
-                halt_dma(ep->indma);
-                flush_pkt_list(list);
-        }
-
-        link_tail(ep, list, pkt);
-
-        vdbg("%s: ep%d, pkt=%p, size=%d, list count=%d", __FUNCTION__,
-             ep->address, pkt, pkt->size, list->count);
-
-        if (list->count == 1) {
-                /*
-                 * if the packet count is one, it means the list was empty,
-                 * and no more data will go out this ep until we kick-start
-                 * it again.
-                 */
-                kickstart_send_packet(ep);
-        }
-
-        return pkt->size;
-}
-
-/*
- * This routine is called to restart reception of a packet.
- * EP spinlock must be held when calling.
- */
-static void
-kickstart_receive_packet(endpoint_t * ep)
-{
-        usbdev_pkt_t *pkt;
-
-        // get and link a new packet for next reception
-        if (!(pkt = add_packet(ep, &ep->outlist, ep->max_pkt_size))) {
-                err("%s: could not alloc new packet", __FUNCTION__);
-                return;
-        }
-
-        if (get_dma_active_buffer(ep->outdma) == 1) {
-                clear_dma_done1(ep->outdma);
-                set_dma_count1(ep->outdma, ep->max_pkt_size);
-                set_dma_count0(ep->outdma, 0);
-                set_dma_addr1(ep->outdma, virt_to_phys(pkt->payload));
-                enable_dma_buffer1(ep->outdma); // reenable
-        } else {
-                clear_dma_done0(ep->outdma);
-                set_dma_count0(ep->outdma, ep->max_pkt_size);
-                set_dma_count1(ep->outdma, 0);
-                set_dma_addr0(ep->outdma, virt_to_phys(pkt->payload));
-                enable_dma_buffer0(ep->outdma); // reenable
-        }
-        if (dma_halted(ep->outdma))
-                start_dma(ep->outdma);
-}
-
-
-/*
- * This routine is called when a packet in the outlist has been
- * completed (received) and we need to prepare for a new packet
- * to be received. Halts DMA and computes the packet size from the
- * remaining DMA counter. Then prepares a new packet for reception
- * and restarts DMA. FIXME: what if another packet comes in
- * on top of the completed packet? Counter would be wrong.
- * EP spinlock must be held when calling.
- */
-static usbdev_pkt_t *
-receive_packet_complete(endpoint_t * ep)
-{
-        usbdev_pkt_t *pkt = ep->outlist.tail;
-        u32 cs;
-
-        halt_dma(ep->outdma);
-
-        cs = au_readl(ep->reg->ctrl_stat);
-
-        if (!pkt)
-                return NULL;
-
-        pkt->size = ep->max_pkt_size - get_dma_residue(ep->outdma);
-        if (pkt->size)
-                dma_cache_inv((unsigned long)pkt->payload, pkt->size);
-        /*
-         * need to pull out any remaining bytes in the FIFO.
-         */
-        endpoint_fifo_read(ep);
-        /*
-         * should be drained now, but flush anyway just in case.
-         */
-        flush_read_fifo(ep);
-
-        pkt->status = (cs & USBDEV_CS_NAK) ? PKT_STATUS_NAK : PKT_STATUS_ACK;
-        if (ep->address == 0 && (cs & USBDEV_CS_SU))
-                pkt->status |= PKT_STATUS_SU;
-
-        vdbg("%s: ep%d, %s pkt=%p, size=%d", __FUNCTION__,
-             ep->address, (pkt->status & PKT_STATUS_NAK) ?
-             "NAK" : "ACK", pkt, pkt->size);
-
-        kickstart_receive_packet(ep);
-
-        return pkt;
-}
-
-
-/*
- ****************************************************************************
- * Here starts the standard device request handlers. They are
- * all called by do_setup() via a table of function pointers.
- ****************************************************************************
- */
-
-static ep0_stage_t
-do_get_status(struct usb_dev* dev, struct usb_ctrlrequest* setup)
-{
-        switch (setup->bRequestType) {
-        case 0x80:      // Device
-                // FIXME: send device status
-                break;
-        case 0x81:      // Interface
-                // FIXME: send interface status
-                break;
-        case 0x82:      // End Point
-                // FIXME: send endpoint status
-                break;
-        default:
-                // Invalid Command
-                endpoint_stall(&dev->ep[0]); // Stall End Point 0
-                break;
-        }
-
-        return STATUS_STAGE;
-}
-
-static ep0_stage_t
-do_clear_feature(struct usb_dev* dev, struct usb_ctrlrequest* setup)
-{
-        switch (setup->bRequestType) {
-        case 0x00:      // Device
-                if ((le16_to_cpu(setup->wValue) & 0xff) == 1)
-                        dev->remote_wakeup_en = 0;
-        else
-                        endpoint_stall(&dev->ep[0]);
-                break;
-        case 0x02:      // End Point
-                if ((le16_to_cpu(setup->wValue) & 0xff) == 0) {
-                        endpoint_t *ep =
-                                epaddr_to_ep(dev,
-                                             le16_to_cpu(setup->wIndex) & 0xff);
-
-                        endpoint_unstall(ep);
-                        endpoint_reset_datatoggle(ep);
-                } else
-                        endpoint_stall(&dev->ep[0]);
-                break;
-        }
-
-        return SETUP_STAGE;
-}
-
-static ep0_stage_t
-do_reserved(struct usb_dev* dev, struct usb_ctrlrequest* setup)
-{
-        // Invalid request, stall End Point 0
-        endpoint_stall(&dev->ep[0]);
-        return SETUP_STAGE;
-}
-
-static ep0_stage_t
-do_set_feature(struct usb_dev* dev, struct usb_ctrlrequest* setup)
-{
-        switch (setup->bRequestType) {
-        case 0x00:      // Device
-                if ((le16_to_cpu(setup->wValue) & 0xff) == 1)
-                        dev->remote_wakeup_en = 1;
-                else
-                        endpoint_stall(&dev->ep[0]);
-                break;
-        case 0x02:      // End Point
-                if ((le16_to_cpu(setup->wValue) & 0xff) == 0) {
-                        endpoint_t *ep =
-                                epaddr_to_ep(dev,
-                                             le16_to_cpu(setup->wIndex) & 0xff);
-
-                        endpoint_stall(ep);
-                } else
-                        endpoint_stall(&dev->ep[0]);
-                break;
-        }
-
-        return SETUP_STAGE;
-}
-
-static ep0_stage_t
-do_set_address(struct usb_dev* dev, struct usb_ctrlrequest* setup)
-{
-        int new_state = dev->state;
-        int new_addr = le16_to_cpu(setup->wValue);
-
-        dbg("%s: our address=%d", __FUNCTION__, new_addr);
-
-        if (new_addr > 127) {
-                        // usb spec doesn't tell us what to do, so just go to
-                        // default state
-                new_state = DEFAULT;
-                dev->address = 0;
-        } else if (dev->address != new_addr) {
-                dev->address = new_addr;
-                new_state = ADDRESS;
-        }
-
-        if (dev->state != new_state) {
-                dev->state = new_state;
-                /* inform function layer of usbdev state change */
-                dev->func_cb(CB_NEW_STATE, dev->state, dev->cb_data);
-        }
-
-        return SETUP_STAGE;
-}
-
-static ep0_stage_t
-do_get_descriptor(struct usb_dev* dev, struct usb_ctrlrequest* setup)
-{
-        int strnum, desc_len = le16_to_cpu(setup->wLength);
-
-                switch (le16_to_cpu(setup->wValue) >> 8) {
-                case USB_DT_DEVICE:
-                        // send device descriptor!
-                desc_len = desc_len > dev->dev_desc->bLength ?
-                        dev->dev_desc->bLength : desc_len;
-                        dbg("sending device desc, size=%d", desc_len);
-                send_packet(dev, alloc_packet(&dev->ep[0], desc_len,
-                                              dev->dev_desc), 0);
-                        break;
-                case USB_DT_CONFIG:
-                        // If the config descr index in low-byte of
-                        // setup->wValue        is valid, send config descr,
-                        // otherwise stall ep0.
-                        if ((le16_to_cpu(setup->wValue) & 0xff) == 0) {
-                                // send config descriptor!
-                                if (desc_len <= USB_DT_CONFIG_SIZE) {
-                                        dbg("sending partial config desc, size=%d",
-                                             desc_len);
-                                send_packet(dev,
-                                            alloc_packet(&dev->ep[0],
-                                                         desc_len,
-                                                         dev->conf_desc),
-                                            0);
-                                } else {
-                                int len = le16_to_cpu(dev->conf_desc->wTotalLength);
-                                dbg("sending whole config desc,"
-                                    " size=%d, our size=%d", desc_len, len);
-                                desc_len = desc_len > len ? len : desc_len;
-                                send_packet(dev,
-                                            alloc_packet(&dev->ep[0],
-                                                         desc_len,
-                                                         dev->full_conf_desc),
-                                            0);
-                                }
-                        } else
-                        endpoint_stall(&dev->ep[0]);
-                        break;
-                case USB_DT_STRING:
-                        // If the string descr index in low-byte of setup->wValue
-                        // is valid, send string descr, otherwise stall ep0.
-                        strnum = le16_to_cpu(setup->wValue) & 0xff;
-                        if (strnum >= 0 && strnum < 6) {
-                                struct usb_string_descriptor *desc =
-                                dev->str_desc[strnum];
-                                desc_len = desc_len > desc->bLength ?
-                                        desc->bLength : desc_len;
-                                dbg("sending string desc %d", strnum);
-                        send_packet(dev,
-                                    alloc_packet(&dev->ep[0], desc_len,
-                                                 desc), 0);
-                        } else
-                        endpoint_stall(&dev->ep[0]);
-                        break;
-        default:
-                // Invalid request
-                err("invalid get desc=%d, stalled",
-                            le16_to_cpu(setup->wValue) >> 8);
-                endpoint_stall(&dev->ep[0]);    // Stall endpoint 0
-                        break;
-                }
-
-        return STATUS_STAGE;
-}
-
-static ep0_stage_t
-do_set_descriptor(struct usb_dev* dev, struct usb_ctrlrequest* setup)
-{
-        // TODO: implement
-        // there will be an OUT data stage (the descriptor to set)
-        return DATA_STAGE;
-}
-
-static ep0_stage_t
-do_get_configuration(struct usb_dev* dev, struct usb_ctrlrequest* setup)
-{
-        // send dev->configuration
-        dbg("sending config");
-        send_packet(dev, alloc_packet(&dev->ep[0], 1, &dev->configuration),
-                    0);
-        return STATUS_STAGE;
-}
-
-static ep0_stage_t
-do_set_configuration(struct usb_dev* dev, struct usb_ctrlrequest* setup)
-{
-        // set active config to low-byte of setup->wValue
-        dev->configuration = le16_to_cpu(setup->wValue) & 0xff;
-        dbg("set config, config=%d", dev->configuration);
-        if (!dev->configuration && dev->state > DEFAULT) {
-                dev->state = ADDRESS;
-                /* inform function layer of usbdev state change */
-                dev->func_cb(CB_NEW_STATE, dev->state, dev->cb_data);
-        } else if (dev->configuration == 1) {
-                dev->state = CONFIGURED;
-                /* inform function layer of usbdev state change */
-                dev->func_cb(CB_NEW_STATE, dev->state, dev->cb_data);
-        } else {
-                // FIXME: "respond with request error" - how?
-        }
-
-        return SETUP_STAGE;
-}
-
-static ep0_stage_t
-do_get_interface(struct usb_dev* dev, struct usb_ctrlrequest* setup)
-{
-                // interface must be zero.
-        if ((le16_to_cpu(setup->wIndex) & 0xff) || dev->state == ADDRESS) {
-                        // FIXME: respond with "request error". how?
-        } else if (dev->state == CONFIGURED) {
-                // send dev->alternate_setting
-                        dbg("sending alt setting");
-                send_packet(dev, alloc_packet(&dev->ep[0], 1,
-                                              &dev->alternate_setting), 0);
-                }
-
-        return STATUS_STAGE;
-
-}
-
-static ep0_stage_t
-do_set_interface(struct usb_dev* dev, struct usb_ctrlrequest* setup)
-{
-        if (dev->state == ADDRESS) {
-                        // FIXME: respond with "request error". how?
-        } else if (dev->state == CONFIGURED) {
-                dev->interface = le16_to_cpu(setup->wIndex) & 0xff;
-                dev->alternate_setting =
-                            le16_to_cpu(setup->wValue) & 0xff;
-                        // interface and alternate_setting must be zero
-                if (dev->interface || dev->alternate_setting) {
-                                // FIXME: respond with "request error". how?
-                        }
-                }
-
-        return SETUP_STAGE;
-}
-
-static ep0_stage_t
-do_synch_frame(struct usb_dev* dev, struct usb_ctrlrequest* setup)
-{
-        // TODO
-        return SETUP_STAGE;
-}
-
-typedef ep0_stage_t (*req_method_t)(struct usb_dev* dev,
-                                    struct usb_ctrlrequest* setup);
-
-
-/* Table of the standard device request handlers */
-static const req_method_t req_method[] = {
-        do_get_status,
-        do_clear_feature,
-        do_reserved,
-        do_set_feature,
-        do_reserved,
-        do_set_address,
-        do_get_descriptor,
-        do_set_descriptor,
-        do_get_configuration,
-        do_set_configuration,
-        do_get_interface,
-        do_set_interface,
-        do_synch_frame
-};
-
-
-// SETUP packet request dispatcher
-static void
-do_setup (struct usb_dev* dev, struct usb_ctrlrequest* setup)
-{
-        req_method_t m;
-
-        dbg("%s: req %d %s", __FUNCTION__, setup->bRequestType,
-            get_std_req_name(setup->bRequestType));
-
-        if ((setup->bRequestType & USB_TYPE_MASK) != USB_TYPE_STANDARD ||
-            (setup->bRequestType & USB_RECIP_MASK) != USB_RECIP_DEVICE) {
-                err("%s: invalid requesttype 0x%02x", __FUNCTION__,
-                    setup->bRequestType);
-                return;
-                }
-
-        if ((setup->bRequestType & 0x80) == USB_DIR_OUT && setup->wLength)
-                dbg("%s: OUT phase! length=%d", __FUNCTION__, setup->wLength);
-
-        if (setup->bRequestType < sizeof(req_method)/sizeof(req_method_t))
-                m = req_method[setup->bRequestType];
-                        else
-                m = do_reserved;
-
-        dev->ep0_stage = (*m)(dev, setup);
-}
-
-/*
- * A SETUP, DATA0, or DATA1 packet has been received
- * on the default control endpoint's fifo.
- */
-static void
-process_ep0_receive (struct usb_dev* dev)
-{
-        endpoint_t *ep0 = &dev->ep[0];
-        usbdev_pkt_t *pkt;
-
-        spin_lock(&ep0->lock);
-
-                // complete packet and prepare a new packet
-        pkt = receive_packet_complete(ep0);
-        if (!pkt) {
-                // FIXME: should  put a warn/err here.
-                spin_unlock(&ep0->lock);
-                        return;
-                }
-
-        // unlink immediately from endpoint.
-        unlink_head(&ep0->outlist);
-
-        // override current stage if h/w says it's a setup packet
-        if (pkt->status & PKT_STATUS_SU)
-                dev->ep0_stage = SETUP_STAGE;
-
-        switch (dev->ep0_stage) {
-        case SETUP_STAGE:
-                vdbg("SU bit is %s in setup stage",
-                     (pkt->status & PKT_STATUS_SU) ? "set" : "not set");
-
-                        if (pkt->size == sizeof(struct usb_ctrlrequest)) {
-#ifdef VDEBUG
-                        if (pkt->status & PKT_STATUS_ACK)
-                                vdbg("received SETUP");
-                                else
-                                vdbg("received NAK SETUP");
-#endif
-                        do_setup(dev, (struct usb_ctrlrequest*)pkt->payload);
-                } else
-                        err("%s: wrong size SETUP received", __FUNCTION__);
-                break;
-        case DATA_STAGE:
-                /*
-                 * this setup has an OUT data stage. Of the standard
-                 * device requests, only set_descriptor has this stage,
-                 * so this packet is that descriptor. TODO: drop it for
-                 * now, set_descriptor not implemented.
-                 *
-                 * Need to place a byte in the write FIFO here, to prepare
-                 * to send a zero-length DATA ack packet to the host in the
-                 * STATUS stage.
-                 */
-                au_writel(0, ep0->reg->write_fifo);
-                dbg("received OUT stage DATAx on EP0, size=%d", pkt->size);
-                dev->ep0_stage = SETUP_STAGE;
-                break;
-        case STATUS_STAGE:
-                // this setup had an IN data stage, and host is ACK'ing
-                // the packet we sent during that stage.
-                if (pkt->size != 0)
-                        warn("received non-zero ACK on EP0??");
-#ifdef VDEBUG
-                else
-                        vdbg("received ACK on EP0");
-#endif
-                dev->ep0_stage = SETUP_STAGE;
-                break;
-        }
-
-        spin_unlock(&ep0->lock);
-        // we're done processing the packet, free it
-        kfree(pkt);
-}
-
-
-/*
- * A DATA0/1 packet has been received on one of the OUT endpoints (4 or 5)
- */
-static void
-process_ep_receive (struct usb_dev* dev, endpoint_t *ep)
-{
-        usbdev_pkt_t *pkt;
-
-                spin_lock(&ep->lock);
-        pkt = receive_packet_complete(ep);
-                spin_unlock(&ep->lock);
-
-        dev->func_cb(CB_PKT_COMPLETE, (unsigned long)pkt, dev->cb_data);
-}
-
-
-
-/* This ISR handles the receive complete and suspend events */
-static void
-req_sus_intr (int irq, void *dev_id, struct pt_regs *regs)
-{
-        struct usb_dev *dev = (struct usb_dev *) dev_id;
-        u32 status;
-
-        status = au_readl(USBD_INTSTAT);
-        au_writel(status, USBD_INTSTAT);        // ack'em
-
-        if (status & (1<<0))
-                process_ep0_receive(dev);
-        if (status & (1<<4))
-                process_ep_receive(dev, &dev->ep[4]);
-        if (status & (1<<5))
-                process_ep_receive(dev, &dev->ep[5]);
-}
-
-
-/* This ISR handles the DMA done events on EP0 */
-static void
-dma_done_ep0_intr(int irq, void *dev_id, struct pt_regs *regs)
-{
-        struct usb_dev *dev = (struct usb_dev *) dev_id;
-        usbdev_pkt_t* pkt;
-        endpoint_t *ep0 = &dev->ep[0];
-        u32 cs0, buff_done;
-
-        spin_lock(&ep0->lock);
-        cs0 = au_readl(ep0->reg->ctrl_stat);
-
-        // first check packet transmit done
-        if ((buff_done = get_dma_buffer_done(ep0->indma)) != 0) {
-                // transmitted a DATAx packet during DATA stage
-                // on control endpoint 0
-                // clear DMA done bit
-                if (buff_done & DMA_D0)
-                        clear_dma_done0(ep0->indma);
-                if (buff_done & DMA_D1)
-                        clear_dma_done1(ep0->indma);
-
-                pkt = send_packet_complete(ep0);
-                kfree(pkt);
-        }
-
-        /*
-         * Now check packet receive done. Shouldn't get these,
-         * the receive packet complete intr should happen
-         * before the DMA done intr occurs.
-         */
-        if ((buff_done = get_dma_buffer_done(ep0->outdma)) != 0) {
-                // clear DMA done bit
-                if (buff_done & DMA_D0)
-                        clear_dma_done0(ep0->outdma);
-                if (buff_done & DMA_D1)
-                        clear_dma_done1(ep0->outdma);
-
-                //process_ep0_receive(dev);
-        }
-
-        spin_unlock(&ep0->lock);
-}
-
-/* This ISR handles the DMA done events on endpoints 2,3,4,5 */
-static void
-dma_done_ep_intr(int irq, void *dev_id, struct pt_regs *regs)
-{
-        struct usb_dev *dev = (struct usb_dev *) dev_id;
-        int i;
-
-        for (i = 2; i < 6; i++) {
-        u32 buff_done;
-                usbdev_pkt_t* pkt;
-                endpoint_t *ep = &dev->ep[i];
-
-                if (!ep->active) continue;
-
-        spin_lock(&ep->lock);
-
-                if (ep->direction == USB_DIR_IN) {
-                        buff_done = get_dma_buffer_done(ep->indma);
-                        if (buff_done != 0) {
-                                // transmitted a DATAx pkt on the IN ep
-                // clear DMA done bit
-                if (buff_done & DMA_D0)
-                        clear_dma_done0(ep->indma);
-                if (buff_done & DMA_D1)
-                        clear_dma_done1(ep->indma);
-
-                                pkt = send_packet_complete(ep);
-
-                                spin_unlock(&ep->lock);
-                                dev->func_cb(CB_PKT_COMPLETE,
-                                             (unsigned long)pkt,
-                                             dev->cb_data);
-                                spin_lock(&ep->lock);
-                        }
-                } else {
-        /*
-                         * Check packet receive done (OUT ep). Shouldn't get
-                         * these, the rx packet complete intr should happen
-         * before the DMA done intr occurs.
-         */
-                        buff_done = get_dma_buffer_done(ep->outdma);
-                        if (buff_done != 0) {
-                                // received a DATAx pkt on the OUT ep
-                // clear DMA done bit
-                if (buff_done & DMA_D0)
-                        clear_dma_done0(ep->outdma);
-                if (buff_done & DMA_D1)
-                        clear_dma_done1(ep->outdma);
-
-                                //process_ep_receive(dev, ep);
-        }
-        }
-
-                spin_unlock(&ep->lock);
-        }
-}
-
-
-/***************************************************************************
- * Here begins the external interface functions
- ***************************************************************************
- */
-
-/*
- * allocate a new packet
- */
-int
-usbdev_alloc_packet(int ep_addr, int data_size, usbdev_pkt_t** pkt)
-{
-        endpoint_t * ep = epaddr_to_ep(&usbdev, ep_addr);
-        usbdev_pkt_t* lpkt = NULL;
-
-        if (!ep || !ep->active || ep->address < 2)
-                return -ENODEV;
-        if (data_size > ep->max_pkt_size)
-                return -EINVAL;
-
-        lpkt = *pkt = alloc_packet(ep, data_size, NULL);
-        if (!lpkt)
-                return -ENOMEM;
-        return 0;
-}
-
-
-/*
- * packet send
- */
-int
-usbdev_send_packet(int ep_addr, usbdev_pkt_t * pkt)
-{
-        unsigned long flags;
-        int count;
-        endpoint_t * ep;
-
-        if (!pkt || !(ep = epaddr_to_ep(&usbdev, pkt->ep_addr)) ||
-            !ep->active || ep->address < 2)
-                return -ENODEV;
-        if (ep->direction != USB_DIR_IN)
-                return -EINVAL;
-
-        spin_lock_irqsave(&ep->lock, flags);
-        count = send_packet(&usbdev, pkt, 1);
-        spin_unlock_irqrestore(&ep->lock, flags);
-
-        return count;
-}
-
-/*
- * packet receive
- */
-int
-usbdev_receive_packet(int ep_addr, usbdev_pkt_t** pkt)
-{
-        unsigned long flags;
-        usbdev_pkt_t* lpkt = NULL;
-        endpoint_t *ep = epaddr_to_ep(&usbdev, ep_addr);
-
-        if (!ep || !ep->active || ep->address < 2)
-                return -ENODEV;
-        if (ep->direction != USB_DIR_OUT)
-                return -EINVAL;
-
-        spin_lock_irqsave(&ep->lock, flags);
-        if (ep->outlist.count > 1)
-                lpkt = unlink_head(&ep->outlist);
-        spin_unlock_irqrestore(&ep->lock, flags);
-
-        if (!lpkt) {
-                /* no packet available */
-                *pkt = NULL;
-                return -ENODATA;
-        }
-
-        *pkt = lpkt;
-
-        return lpkt->size;
-}
-
-
-/*
- * return total queued byte count on the endpoint.
- */
-int
-usbdev_get_byte_count(int ep_addr)
-{
-        unsigned long flags;
-        pkt_list_t *list;
-        usbdev_pkt_t *scan;
-        int count = 0;
-        endpoint_t * ep = epaddr_to_ep(&usbdev, ep_addr);
-
-        if (!ep || !ep->active || ep->address < 2)
-                return -ENODEV;
-
-        if (ep->direction == USB_DIR_IN) {
-                list = &ep->inlist;
-
-                spin_lock_irqsave(&ep->lock, flags);
-                for (scan = list->head; scan; scan = scan->next)
-                        count += scan->size;
-                spin_unlock_irqrestore(&ep->lock, flags);
-        } else {
-                list = &ep->outlist;
-
-                spin_lock_irqsave(&ep->lock, flags);
-                if (list->count > 1) {
-                        for (scan = list->head; scan != list->tail;
-                             scan = scan->next)
-                                count += scan->size;
-        }
-                spin_unlock_irqrestore(&ep->lock, flags);
-        }
-
-        return count;
-}
-
-
-void
-usbdev_exit(void)
-{
-        endpoint_t *ep;
-        int i;
-
-        au_writel(0, USBD_INTEN);       // disable usb dev ints
-        au_writel(0, USBD_ENABLE);      // disable usb dev
-
-        free_irq(AU1000_USB_DEV_REQ_INT, &usbdev);
-        free_irq(AU1000_USB_DEV_SUS_INT, &usbdev);
-
-        // free all control endpoint resources
-        ep = &usbdev.ep[0];
-        free_au1000_dma(ep->indma);
-        free_au1000_dma(ep->outdma);
-        endpoint_flush(ep);
-
-        // free ep resources
-        for (i = 2; i < 6; i++) {
-                ep = &usbdev.ep[i];
-                if (!ep->active) continue;
-
-                if (ep->direction == USB_DIR_IN) {
-                        free_au1000_dma(ep->indma);
-                } else {
-                free_au1000_dma(ep->outdma);
-                }
-                endpoint_flush(ep);
-        }
-
-        kfree(usbdev.full_conf_desc);
-}
-
-int
-usbdev_init(struct usb_device_descriptor* dev_desc,
-            struct usb_config_descriptor* config_desc,
-            struct usb_interface_descriptor* if_desc,
-            struct usb_endpoint_descriptor* ep_desc,
-            struct usb_string_descriptor* str_desc[],
-            void (*cb)(usbdev_cb_type_t, unsigned long, void *),
-            void* cb_data)
-{
-        endpoint_t *ep0;
-        int i, ret=0;
-        u8* fcd;
-
-        if (dev_desc->bNumConfigurations > 1 ||
-            config_desc->bNumInterfaces > 1 ||
-            if_desc->bNumEndpoints > 4) {
-                err("Only one config, one i/f, and no more "
-                    "than 4 ep's allowed");
-                ret = -EINVAL;
-                goto out;
-        }
-
-        if (!cb) {
-                err("Function-layer callback required");
-                ret = -EINVAL;
-                goto out;
-        }
-
-        if (dev_desc->bMaxPacketSize0 != USBDEV_EP0_MAX_PACKET_SIZE) {
-                warn("EP0 Max Packet size must be %d",
-                     USBDEV_EP0_MAX_PACKET_SIZE);
-                dev_desc->bMaxPacketSize0 = USBDEV_EP0_MAX_PACKET_SIZE;
-        }
-
-        memset(&usbdev, 0, sizeof(struct usb_dev));
-
-        usbdev.state = DEFAULT;
-        usbdev.dev_desc = dev_desc;
-        usbdev.if_desc = if_desc;
-        usbdev.conf_desc = config_desc;
-        for (i=0; i<6; i++)
-                usbdev.str_desc[i] = str_desc[i];
-        usbdev.func_cb = cb;
-        usbdev.cb_data = cb_data;
-
-        /* Initialize default control endpoint */
-        ep0 = &usbdev.ep[0];
-        ep0->active = 1;
-        ep0->type = CONTROL_EP;
-        ep0->max_pkt_size = USBDEV_EP0_MAX_PACKET_SIZE;
-        spin_lock_init(&ep0->lock);
-        ep0->desc = NULL;       // ep0 has no descriptor
-        ep0->address = 0;
-        ep0->direction = 0;
-        ep0->reg = &ep_reg[0];
-
-        /* Initialize the other requested endpoints */
-        for (i = 0; i < if_desc->bNumEndpoints; i++) {
-                struct usb_endpoint_descriptor* epd = &ep_desc[i];
-        endpoint_t *ep;
-
-                if ((epd->bEndpointAddress & 0x80) == USB_DIR_IN) {
-                        ep = &usbdev.ep[2];
-                        ep->address = 2;
-                        if (ep->active) {
-                                ep = &usbdev.ep[3];
-                                ep->address = 3;
-                                if (ep->active) {
-                                        err("too many IN ep's requested");
-                                        ret = -ENODEV;
-                                        goto out;
-        }
-        }
-                } else {
-                        ep = &usbdev.ep[4];
-                        ep->address = 4;
-                        if (ep->active) {
-                                ep = &usbdev.ep[5];
-                                ep->address = 5;
-                                if (ep->active) {
-                                        err("too many OUT ep's requested");
-                                        ret = -ENODEV;
-                                        goto out;
-        }
-        }
-                }
-
-                ep->active = 1;
-                epd->bEndpointAddress &= ~0x0f;
-                epd->bEndpointAddress |= (u8)ep->address;
-                ep->direction = epd->bEndpointAddress & 0x80;
-                ep->type = epd->bmAttributes & 0x03;
-                ep->max_pkt_size = le16_to_cpu(epd->wMaxPacketSize);
-                spin_lock_init(&ep->lock);
-                ep->desc = epd;
-                ep->reg = &ep_reg[ep->address];
-                }
-
-        /*
-         * initialize the full config descriptor
-         */
-        usbdev.full_conf_desc = fcd = kmalloc(le16_to_cpu(config_desc->wTotalLength),
-                                              ALLOC_FLAGS);
-        if (!fcd) {
-                err("failed to alloc full config descriptor");
-                ret = -ENOMEM;
-                goto out;
-        }
-
-        memcpy(fcd, config_desc, USB_DT_CONFIG_SIZE);
-        fcd += USB_DT_CONFIG_SIZE;
-        memcpy(fcd, if_desc, USB_DT_INTERFACE_SIZE);
-        fcd += USB_DT_INTERFACE_SIZE;
-        for (i = 0; i < if_desc->bNumEndpoints; i++) {
-                memcpy(fcd, &ep_desc[i], USB_DT_ENDPOINT_SIZE);
-                fcd += USB_DT_ENDPOINT_SIZE;
-        }
-
-        /* Now we're ready to enable the controller */
-        au_writel(0x0002, USBD_ENABLE);
-        udelay(100);
-        au_writel(0x0003, USBD_ENABLE);
-        udelay(100);
-
-        /* build and send config table based on ep descriptors */
-        for (i = 0; i < 6; i++) {
-                endpoint_t *ep;
-                if (i == 1)
-                        continue; // skip dummy ep
-                ep = &usbdev.ep[i];
-                if (ep->active) {
-                        au_writel((ep->address << 4) | 0x04, USBD_CONFIG);
-                        au_writel(((ep->max_pkt_size & 0x380) >> 7) |
-                                  (ep->direction >> 4) | (ep->type << 4),
-                                  USBD_CONFIG);
-                        au_writel((ep->max_pkt_size & 0x7f) << 1, USBD_CONFIG);
-                        au_writel(0x00, USBD_CONFIG);
-                        au_writel(ep->address, USBD_CONFIG);
-                } else {
-                        u8 dir = (i==2 || i==3) ? DIR_IN : DIR_OUT;
-                        au_writel((i << 4) | 0x04, USBD_CONFIG);
-                        au_writel(((16 & 0x380) >> 7) | dir |
-                                  (BULK_EP << 4), USBD_CONFIG);
-                        au_writel((16 & 0x7f) << 1, USBD_CONFIG);
-                        au_writel(0x00, USBD_CONFIG);
-                        au_writel(i, USBD_CONFIG);
-                }
-        }
-
-        /*
-         * Enable Receive FIFO Complete interrupts only. Transmit
-         * complete is being handled by the DMA done interrupts.
-         */
-        au_writel(0x31, USBD_INTEN);
-
-        /*
-         * Controller is now enabled, request DMA and IRQ
-         * resources.
-         */
-
-        /* request the USB device transfer complete interrupt */
-        if (request_irq(AU1000_USB_DEV_REQ_INT, req_sus_intr, IRQF_DISABLED,
-                        "USBdev req", &usbdev)) {
-                err("Can't get device request intr");
-                ret = -ENXIO;
-                goto out;
-        }
-        /* request the USB device suspend interrupt */
-        if (request_irq(AU1000_USB_DEV_SUS_INT, req_sus_intr, IRQF_DISABLED,
-                        "USBdev sus", &usbdev)) {
-                err("Can't get device suspend intr");
-                ret = -ENXIO;
-                goto out;
-        }
-
-        /* Request EP0 DMA and IRQ */
-        if ((ep0->indma = request_au1000_dma(ep_dma_id[0].id,
-                                             ep_dma_id[0].str,
-                                             dma_done_ep0_intr,
-                                             IRQF_DISABLED,
-                                             &usbdev)) < 0) {
-                err("Can't get %s DMA", ep_dma_id[0].str);
-                ret = -ENXIO;
-                goto out;
-        }
-        if ((ep0->outdma = request_au1000_dma(ep_dma_id[1].id,
-                                              ep_dma_id[1].str,
-                                              NULL, 0, NULL)) < 0) {
-                err("Can't get %s DMA", ep_dma_id[1].str);
-                ret = -ENXIO;
-                goto out;
-        }
-
-        // Flush the ep0 buffers and FIFOs
-        endpoint_flush(ep0);
-        // start packet reception on ep0
-        kickstart_receive_packet(ep0);
-
-        /* Request DMA and IRQ for the other endpoints */
-        for (i = 2; i < 6; i++) {
-                endpoint_t *ep = &usbdev.ep[i];
-                if (!ep->active)
-                        continue;
-
-                // Flush the endpoint buffers and FIFOs
-                endpoint_flush(ep);
-
-                if (ep->direction == USB_DIR_IN) {
-                        ep->indma =
-                                request_au1000_dma(ep_dma_id[ep->address].id,
-                                                   ep_dma_id[ep->address].str,
-                                                   dma_done_ep_intr,
-                                                   IRQF_DISABLED,
-                                                   &usbdev);
-                        if (ep->indma < 0) {
-                                err("Can't get %s DMA",
-                                    ep_dma_id[ep->address].str);
-                                ret = -ENXIO;
-                                goto out;
-                        }
-                } else {
-                        ep->outdma =
-                                request_au1000_dma(ep_dma_id[ep->address].id,
-                                                   ep_dma_id[ep->address].str,
-                                                   NULL, 0, NULL);
-                        if (ep->outdma < 0) {
-                                err("Can't get %s DMA",
-                                    ep_dma_id[ep->address].str);
-                                ret = -ENXIO;
-                                goto out;
-                        }
-
-                        // start packet reception on OUT endpoint
-                        kickstart_receive_packet(ep);
-                }
-        }
-
- out:
-        if (ret)
-                usbdev_exit();
-        return ret;
-}
-
-EXPORT_SYMBOL(usbdev_init);
-EXPORT_SYMBOL(usbdev_exit);
-EXPORT_SYMBOL(usbdev_alloc_packet);
-EXPORT_SYMBOL(usbdev_receive_packet);
-EXPORT_SYMBOL(usbdev_send_packet);
-EXPORT_SYMBOL(usbdev_get_byte_count);
diff --git a/arch/mips/au1000/db1x00/board_setup.c b/arch/mips/au1000/db1x00/board_setup.c
index 7a79293f8527..8b08edb977be 100644
--- a/arch/mips/au1000/db1x00/board_setup.c
+++ b/arch/mips/au1000/db1x00/board_setup.c
@@ -58,11 +58,6 @@ void __init board_setup(void)
 
         pin_func = 0;
         /* not valid for 1550 */
-#ifdef CONFIG_AU1X00_USB_DEVICE
-        // 2nd USB port is USB device
-        pin_func = au_readl(SYS_PINFUNC) & (u32)(~0x8000);
-        au_writel(pin_func, SYS_PINFUNC);
-#endif
 
 #if defined(CONFIG_IRDA) && (defined(CONFIG_SOC_AU1000) || defined(CONFIG_SOC_AU1100))
         /* set IRFIRSEL instead of GPIO15 */
diff --git a/arch/mips/au1000/mtx-1/board_setup.c b/arch/mips/au1000/mtx-1/board_setup.c
index e917e54fc683..13f9bf5f91a6 100644
--- a/arch/mips/au1000/mtx-1/board_setup.c
+++ b/arch/mips/au1000/mtx-1/board_setup.c
@@ -51,15 +51,11 @@ void board_reset (void)
 
 void __init board_setup(void)
 {
-#if defined (CONFIG_USB_OHCI) || defined (CONFIG_AU1X00_USB_DEVICE)
-#ifdef CONFIG_AU1X00_USB_DEVICE
-        // 2nd USB port is USB device
-        au_writel(au_readl(SYS_PINFUNC) & (u32)(~0x8000), SYS_PINFUNC);
-#endif
+#ifdef CONFIG_USB_OHCI
         // enable USB power switch
         au_writel( au_readl(GPIO2_DIR) | 0x10, GPIO2_DIR );
         au_writel( 0x100000, GPIO2_OUTPUT );
-#endif // defined (CONFIG_USB_OHCI) || defined (CONFIG_AU1X00_USB_DEVICE)
+#endif // defined (CONFIG_USB_OHCI)
 
 #ifdef CONFIG_PCI
 #if defined(__MIPSEB__)
diff --git a/arch/mips/au1000/pb1000/board_setup.c b/arch/mips/au1000/pb1000/board_setup.c
index 1cf18e16ab54..824cfafaff92 100644
--- a/arch/mips/au1000/pb1000/board_setup.c
+++ b/arch/mips/au1000/pb1000/board_setup.c
@@ -54,7 +54,7 @@ void __init board_setup(void)
         au_writel(0, SYS_PINSTATERD);
         udelay(100);
 
-#if defined (CONFIG_USB_OHCI) || defined (CONFIG_AU1X00_USB_DEVICE)
+#ifdef CONFIG_USB_OHCI
         /* zero and disable FREQ2 */
         sys_freqctrl = au_readl(SYS_FREQCTRL0);
         sys_freqctrl &= ~0xFFF00000;
@@ -105,22 +105,18 @@ void __init board_setup(void)
 #ifdef CONFIG_USB_OHCI
         sys_clksrc |= ((4<<12) | (0<<11) | (0<<10));
 #endif
-#ifdef CONFIG_AU1X00_USB_DEVICE
-        sys_clksrc |= ((4<<7) | (0<<6) | (0<<5));
-#endif
         au_writel(sys_clksrc, SYS_CLKSRC);
 
         // configure pins GPIO[14:9] as GPIO
         pin_func = au_readl(SYS_PINFUNC) & (u32)(~0x8080);
 
-#ifndef CONFIG_AU1X00_USB_DEVICE
         // 2nd USB port is USB host
         pin_func |= 0x8000;
-#endif
+
         au_writel(pin_func, SYS_PINFUNC);
         au_writel(0x2800, SYS_TRIOUTCLR);
         au_writel(0x0030, SYS_OUTPUTCLR);
-#endif // defined (CONFIG_USB_OHCI) || defined (CONFIG_AU1X00_USB_DEVICE)
+#endif // defined (CONFIG_USB_OHCI)
 
         // make gpio 15 an input (for interrupt line)
         pin_func = au_readl(SYS_PINFUNC) & (u32)(~0x100);
diff --git a/arch/mips/au1000/pb1100/board_setup.c b/arch/mips/au1000/pb1100/board_setup.c
index db27b9331ff3..2d1533f116c0 100644
--- a/arch/mips/au1000/pb1100/board_setup.c
+++ b/arch/mips/au1000/pb1100/board_setup.c
@@ -55,7 +55,7 @@ void __init board_setup(void)
         au_writel(0, SYS_PININPUTEN);
         udelay(100);
 
-#if defined (CONFIG_USB_OHCI) || defined (CONFIG_AU1X00_USB_DEVICE)
+#ifdef CONFIG_USB_OHCI
         // configure pins GPIO[14:9] as GPIO
         pin_func = au_readl(SYS_PINFUNC) & (u32)(~0x80);
 
@@ -92,12 +92,10 @@ void __init board_setup(void)
 
         // get USB Functionality pin state (device vs host drive pins)
         pin_func = au_readl(SYS_PINFUNC) & (u32)(~0x8000);
-#ifndef CONFIG_AU1X00_USB_DEVICE
         // 2nd USB port is USB host
         pin_func |= 0x8000;
-#endif
         au_writel(pin_func, SYS_PINFUNC);
-#endif // defined (CONFIG_USB_OHCI) || defined (CONFIG_AU1X00_USB_DEVICE)
+#endif // defined (CONFIG_USB_OHCI)
 
         /* Enable sys bus clock divider when IDLE state or no bus activity. */
         au_writel(au_readl(SYS_POWERCTRL) | (0x3 << 5), SYS_POWERCTRL);
diff --git a/arch/mips/au1000/pb1200/irqmap.c b/arch/mips/au1000/pb1200/irqmap.c
index f66779f0d4cd..91983ba407c4 100644
--- a/arch/mips/au1000/pb1200/irqmap.c
+++ b/arch/mips/au1000/pb1200/irqmap.c
@@ -65,7 +65,7 @@ int __initdata au1xxx_nr_irqs = ARRAY_SIZE(au1xxx_irq_map);
  */
 static volatile int pb1200_cascade_en=0;
 
-irqreturn_t pb1200_cascade_handler( int irq, void *dev_id, struct pt_regs *regs)
+irqreturn_t pb1200_cascade_handler( int irq, void *dev_id)
 {
         unsigned short bisr = bcsr->int_status;
         int extirq_nr = 0;
@@ -76,8 +76,9 @@ irqreturn_t pb1200_cascade_handler( int irq, void *dev_id, struct pt_regs *regs)
         {
                 extirq_nr = (PB1200_INT_BEGIN-1) + au_ffs(bisr);
                 /* Ack and dispatch IRQ */
-                do_IRQ(extirq_nr,regs);
+                do_IRQ(extirq_nr);
         }
+
         return IRQ_RETVAL(1);
 }
 
diff --git a/arch/mips/au1000/pb1500/board_setup.c b/arch/mips/au1000/pb1500/board_setup.c
index 1a9a293de6ab..0ffdb4fd575b 100644
--- a/arch/mips/au1000/pb1500/board_setup.c
+++ b/arch/mips/au1000/pb1500/board_setup.c
@@ -56,7 +56,7 @@ void __init board_setup(void)
         au_writel(0, SYS_PINSTATERD);
         udelay(100);
 
-#if defined (CONFIG_USB_OHCI) || defined (CONFIG_AU1X00_USB_DEVICE)
+#ifdef CONFIG_USB_OHCI
 
         /* GPIO201 is input for PCMCIA card detect */
         /* GPIO203 is input for PCMCIA interrupt request */
@@ -88,19 +88,14 @@ void __init board_setup(void)
 #ifdef CONFIG_USB_OHCI
         sys_clksrc |= ((4<<12) | (0<<11) | (0<<10));
 #endif
-#ifdef CONFIG_AU1X00_USB_DEVICE
-        sys_clksrc |= ((4<<7) | (0<<6) | (0<<5));
-#endif
         au_writel(sys_clksrc, SYS_CLKSRC);
 
 
         pin_func = au_readl(SYS_PINFUNC) & (u32)(~0x8000);
-#ifndef CONFIG_AU1X00_USB_DEVICE
         // 2nd USB port is USB host
         pin_func |= 0x8000;
-#endif
         au_writel(pin_func, SYS_PINFUNC);
-#endif // defined (CONFIG_USB_OHCI) || defined (CONFIG_AU1X00_USB_DEVICE)
+#endif // defined (CONFIG_USB_OHCI)
 
 
 
diff --git a/arch/mips/basler/excite/excite_dbg_io.c b/arch/mips/basler/excite/excite_dbg_io.c
index c04505afa47f..d289e3a868cf 100644
--- a/arch/mips/basler/excite/excite_dbg_io.c
+++ b/arch/mips/basler/excite/excite_dbg_io.c
@@ -112,7 +112,7 @@ int putDebugChar(int data)
 }
 
 /* KGDB interrupt handler */
-asmlinkage void excite_kgdb_inthdl(struct pt_regs *regs)
+asmlinkage void excite_kgdb_inthdl(void)
 {
         if (unlikely(
                 ((titan_readl(UAIIR) & 0x7) == 4)
diff --git a/arch/mips/basler/excite/excite_iodev.c b/arch/mips/basler/excite/excite_iodev.c
index 10bbb8cfb964..6af0b21ebc32 100644
--- a/arch/mips/basler/excite/excite_iodev.c
+++ b/arch/mips/basler/excite/excite_iodev.c
@@ -38,7 +38,7 @@ static int iodev_open(struct inode *, struct file *);
 static int iodev_release(struct inode *, struct file *);
 static ssize_t iodev_read(struct file *, char __user *, size_t s, loff_t *);
 static unsigned int iodev_poll(struct file *, struct poll_table_struct *);
-static irqreturn_t iodev_irqhdl(int, void *, struct pt_regs *);
+static irqreturn_t iodev_irqhdl(int, void *);
 
 
 
@@ -108,16 +108,12 @@ static int __exit iodev_remove(struct device *dev)
         return misc_deregister(&miscdev);
 }
 
-
-
 static int iodev_open(struct inode *i, struct file *f)
 {
         return request_irq(iodev_irq, iodev_irqhdl, IRQF_DISABLED,
                            iodev_name, &miscdev);
 }
 
-
-
 static int iodev_release(struct inode *i, struct file *f)
 {
         free_irq(iodev_irq, &miscdev);
@@ -148,17 +144,13 @@ static unsigned int iodev_poll(struct file *f, struct poll_table_struct *p)
         return POLLOUT | POLLWRNORM;
 }
 
-
-
-
-static irqreturn_t iodev_irqhdl(int irq, void *ctxt, struct pt_regs *regs)
+static irqreturn_t iodev_irqhdl(int irq, void *ctxt)
 {
         wake_up(&wq);
+
         return IRQ_HANDLED;
 }
 
-
-
 static int __init iodev_init_module(void)
 {
         return driver_register(&iodev_driver);
diff --git a/arch/mips/basler/excite/excite_irq.c b/arch/mips/basler/excite/excite_irq.c
index 511ad8730f54..2e2061a286c5 100644
--- a/arch/mips/basler/excite/excite_irq.c
+++ b/arch/mips/basler/excite/excite_irq.c
@@ -56,7 +56,7 @@ void __init arch_init_irq(void)
 #endif
 }
 
-asmlinkage void plat_irq_dispatch(struct pt_regs *regs)
+asmlinkage void plat_irq_dispatch(void)
 {
         const u32
                 interrupts = read_c0_cause() >> 8,
@@ -67,7 +67,7 @@ asmlinkage void plat_irq_dispatch(struct pt_regs *regs)
 
         /* process timer interrupt */
         if (pending & (1 << TIMER_IRQ)) {
-                do_IRQ(TIMER_IRQ, regs);
+                do_IRQ(TIMER_IRQ);
                 return;
         }
 
@@ -80,7 +80,7 @@ asmlinkage void plat_irq_dispatch(struct pt_regs *regs)
 #else
         if (pending & (1 << USB_IRQ)) {
 #endif
-                do_IRQ(USB_IRQ, regs);
+                do_IRQ(USB_IRQ);
                 return;
         }
 
@@ -91,9 +91,9 @@ asmlinkage void plat_irq_dispatch(struct pt_regs *regs)
         if ((pending & (1 << TITAN_IRQ)) && msgint) {
                 ocd_writel(msgint, INTP0Clear0 + (TITAN_MSGINT / 0x20 * 0x10));
 #if defined(CONFIG_KGDB)
-                excite_kgdb_inthdl(regs);
+                excite_kgdb_inthdl();
 #endif
-                do_IRQ(TITAN_IRQ, regs);
+                do_IRQ(TITAN_IRQ);
                 return;
         }
 
@@ -102,7 +102,7 @@ asmlinkage void plat_irq_dispatch(struct pt_regs *regs)
         msgintmask  = ocd_readl(INTP0Mask0 + (FPGA0_MSGINT / 0x20 * 0x10));
         msgint      = msgintflags & msgintmask & (0x1 << (FPGA0_MSGINT % 0x20));
         if ((pending & (1 << FPGA0_IRQ)) && msgint) {
-                do_IRQ(FPGA0_IRQ, regs);
+                do_IRQ(FPGA0_IRQ);
                 return;
         }
 
@@ -111,7 +111,7 @@ asmlinkage void plat_irq_dispatch(struct pt_regs *regs)
         msgintmask  = ocd_readl(INTP0Mask0 + (FPGA1_MSGINT / 0x20 * 0x10));
         msgint      = msgintflags & msgintmask & (0x1 << (FPGA1_MSGINT % 0x20));
         if ((pending & (1 << FPGA1_IRQ)) && msgint) {
-                do_IRQ(FPGA1_IRQ, regs);
+                do_IRQ(FPGA1_IRQ);
                 return;
         }
 
@@ -120,10 +120,10 @@ asmlinkage void plat_irq_dispatch(struct pt_regs *regs)
         msgintmask  = ocd_readl(INTP0Mask0 + (PHY_MSGINT / 0x20 * 0x10));
         msgint      = msgintflags & msgintmask & (0x1 << (PHY_MSGINT % 0x20));
         if ((pending & (1 << PHY_IRQ)) && msgint) {
-                do_IRQ(PHY_IRQ, regs);
+                do_IRQ(PHY_IRQ);
                 return;
         }
 
         /* Process spurious interrupts */
-        spurious_interrupt(regs);
+        spurious_interrupt();
 }
diff --git a/arch/mips/cobalt/irq.c b/arch/mips/cobalt/irq.c
index 0b75f4fb7195..82e569d5b02c 100644
--- a/arch/mips/cobalt/irq.c
+++ b/arch/mips/cobalt/irq.c
@@ -16,7 +16,6 @@
 #include <asm/i8259.h>
 #include <asm/irq_cpu.h>
 #include <asm/gt64120.h>
-#include <asm/ptrace.h>
 
 #include <asm/mach-cobalt/cobalt.h>
 
@@ -42,7 +41,7 @@
  *    15  - IDE1
  */
 
-static inline void galileo_irq(struct pt_regs *regs)
+static inline void galileo_irq(void)
 {
         unsigned int mask, pending, devfn;
 
@@ -52,7 +51,7 @@ static inline void galileo_irq(struct pt_regs *regs)
         if (pending & GALILEO_INTR_T0EXP) {
 
                 GALILEO_OUTL(~GALILEO_INTR_T0EXP, GT_INTRCAUSE_OFS);
-                do_IRQ(COBALT_GALILEO_IRQ, regs);
+                do_IRQ(COBALT_GALILEO_IRQ);
 
         } else if (pending & GALILEO_INTR_RETRY_CTR) {
 
@@ -68,44 +67,31 @@ static inline void galileo_irq(struct pt_regs *regs)
         }
 }
 
-static inline void via_pic_irq(struct pt_regs *regs)
+static inline void via_pic_irq(void)
 {
         int irq;
 
         irq = i8259_irq();
         if (irq >= 0)
-                do_IRQ(irq, regs);
+                do_IRQ(irq);
 }
 
-asmlinkage void plat_irq_dispatch(struct pt_regs *regs)
+asmlinkage void plat_irq_dispatch(void)
 {
-        unsigned pending;
-
-        pending = read_c0_status() & read_c0_cause();
-
-        if (pending & CAUSEF_IP2)                       /* COBALT_GALILEO_IRQ (18) */
-
-                galileo_irq(regs);
-
-        else if (pending & CAUSEF_IP6)                  /* COBALT_VIA_IRQ (22) */
-
-                via_pic_irq(regs);
-
-        else if (pending & CAUSEF_IP3)                  /* COBALT_ETH0_IRQ (19) */
-
-                do_IRQ(COBALT_CPU_IRQ + 3, regs);
-
-        else if (pending & CAUSEF_IP4)                  /* COBALT_ETH1_IRQ (20) */
-
-                do_IRQ(COBALT_CPU_IRQ + 4, regs);
-
-        else if (pending & CAUSEF_IP5)                  /* COBALT_SERIAL_IRQ (21) */
-
-                do_IRQ(COBALT_CPU_IRQ + 5, regs);
-
-        else if (pending & CAUSEF_IP7)                  /* IRQ 23 */
-
-                do_IRQ(COBALT_CPU_IRQ + 7, regs);
+        unsigned pending = read_c0_status() & read_c0_cause();
+
+        if (pending & CAUSEF_IP2)               /* COBALT_GALILEO_IRQ (18) */
+                galileo_irq();
+        else if (pending & CAUSEF_IP6)          /* COBALT_VIA_IRQ (22) */
+                via_pic_irq();
+        else if (pending & CAUSEF_IP3)          /* COBALT_ETH0_IRQ (19) */
+                do_IRQ(COBALT_CPU_IRQ + 3);
+        else if (pending & CAUSEF_IP4)          /* COBALT_ETH1_IRQ (20) */
+                do_IRQ(COBALT_CPU_IRQ + 4);
+        else if (pending & CAUSEF_IP5)          /* COBALT_SERIAL_IRQ (21) */
+                do_IRQ(COBALT_CPU_IRQ + 5);
+        else if (pending & CAUSEF_IP7)          /* IRQ 23 */
+                do_IRQ(COBALT_CPU_IRQ + 7);
 }
 
 static struct irqaction irq_via = {
diff --git a/arch/mips/cobalt/setup.c b/arch/mips/cobalt/setup.c
index 0b347cffc768..bf9dc72b9720 100644
--- a/arch/mips/cobalt/setup.c
+++ b/arch/mips/cobalt/setup.c
@@ -50,8 +50,8 @@ const char *get_system_type(void)
 
 void __init plat_timer_setup(struct irqaction *irq)
 {
-        /* Load timer value for 1KHz (TCLK is 50MHz) */
-        GALILEO_OUTL(50*1000*1000 / 1000, GT_TC0_OFS);
+        /* Load timer value for HZ (TCLK is 50MHz) */
+        GALILEO_OUTL(50*1000*1000 / HZ, GT_TC0_OFS);
 
         /* Enable timer */
         GALILEO_OUTL(GALILEO_ENTC0 | GALILEO_SELTC0, GT_TC_CONTROL_OFS);
diff --git a/arch/mips/configs/jazz_defconfig b/arch/mips/configs/jazz_defconfig
new file mode 100644
index 000000000000..382083ebea0a
--- /dev/null
+++ b/arch/mips/configs/jazz_defconfig
@@ -0,0 +1,1404 @@
+#
+# Automatically generated make config: don't edit
+# Linux kernel version: 2.6.19-rc1
+# Sun Oct  8 19:03:07 2006
+#
+CONFIG_MIPS=y
+
+#
+# Machine selection
+#
+# CONFIG_MIPS_MTX1 is not set
+# CONFIG_MIPS_BOSPORUS is not set
+# CONFIG_MIPS_PB1000 is not set
+# CONFIG_MIPS_PB1100 is not set
+# CONFIG_MIPS_PB1500 is not set
+# CONFIG_MIPS_PB1550 is not set
+# CONFIG_MIPS_PB1200 is not set
+# CONFIG_MIPS_DB1000 is not set
+# CONFIG_MIPS_DB1100 is not set
+# CONFIG_MIPS_DB1500 is not set
+# CONFIG_MIPS_DB1550 is not set
+# CONFIG_MIPS_DB1200 is not set
+# CONFIG_MIPS_MIRAGE is not set
+# CONFIG_BASLER_EXCITE is not set
+# CONFIG_MIPS_COBALT is not set
+# CONFIG_MACH_DECSTATION is not set
+# CONFIG_MIPS_EV64120 is not set
+CONFIG_MACH_JAZZ=y
+# CONFIG_LASAT is not set
+# CONFIG_MIPS_ATLAS is not set
+# CONFIG_MIPS_MALTA is not set
+# CONFIG_MIPS_SEAD is not set
+# CONFIG_WR_PPMC is not set
+# CONFIG_MIPS_SIM is not set
+# CONFIG_MOMENCO_JAGUAR_ATX is not set
+# CONFIG_MOMENCO_OCELOT is not set
+# CONFIG_MOMENCO_OCELOT_3 is not set
+# CONFIG_MOMENCO_OCELOT_C is not set
+# CONFIG_MOMENCO_OCELOT_G is not set
+# CONFIG_MIPS_XXS1500 is not set
+# CONFIG_PNX8550_V2PCI is not set
+# CONFIG_PNX8550_JBS is not set
+# CONFIG_DDB5477 is not set
+# CONFIG_MACH_VR41XX is not set
+# CONFIG_PMC_YOSEMITE is not set
+# CONFIG_QEMU is not set
+# CONFIG_MARKEINS is not set
+# CONFIG_SGI_IP22 is not set
+# CONFIG_SGI_IP27 is not set
+# CONFIG_SGI_IP32 is not set
+# CONFIG_SIBYTE_BIGSUR is not set
+# CONFIG_SIBYTE_SWARM is not set
+# CONFIG_SIBYTE_SENTOSA is not set
+# CONFIG_SIBYTE_RHONE is not set
+# CONFIG_SIBYTE_CARMEL is not set
+# CONFIG_SIBYTE_PTSWARM is not set
+# CONFIG_SIBYTE_LITTLESUR is not set
+# CONFIG_SIBYTE_CRHINE is not set
+# CONFIG_SIBYTE_CRHONE is not set
+# CONFIG_SNI_RM200_PCI is not set
+# CONFIG_TOSHIBA_JMR3927 is not set
+# CONFIG_TOSHIBA_RBTX4927 is not set
+# CONFIG_TOSHIBA_RBTX4938 is not set
+# CONFIG_ACER_PICA_61 is not set
+# CONFIG_MIPS_MAGNUM_4000 is not set
+CONFIG_OLIVETTI_M700=y
+CONFIG_RWSEM_GENERIC_SPINLOCK=y
+CONFIG_GENERIC_FIND_NEXT_BIT=y
+CONFIG_GENERIC_HWEIGHT=y
+CONFIG_GENERIC_CALIBRATE_DELAY=y
+CONFIG_GENERIC_TIME=y
+CONFIG_SCHED_NO_NO_OMIT_FRAME_POINTER=y
+CONFIG_ARC=y
+CONFIG_ARCH_MAY_HAVE_PC_FDC=y
+CONFIG_DMA_NONCOHERENT=y
+CONFIG_DMA_NEED_PCI_MAP_STATE=y
+CONFIG_GENERIC_ISA_DMA=y
+CONFIG_I8259=y
+# CONFIG_CPU_BIG_ENDIAN is not set
+CONFIG_CPU_LITTLE_ENDIAN=y
+CONFIG_SYS_SUPPORTS_LITTLE_ENDIAN=y
+CONFIG_ARC32=y
+CONFIG_MIPS_L1_CACHE_SHIFT=5
+CONFIG_ARC_MEMORY=y
+CONFIG_ARC_PROMLIB=y
+
+#
+# CPU selection
+#
+# CONFIG_CPU_MIPS32_R1 is not set
+# CONFIG_CPU_MIPS32_R2 is not set
+# CONFIG_CPU_MIPS64_R1 is not set
+# CONFIG_CPU_MIPS64_R2 is not set
+# CONFIG_CPU_R3000 is not set
+# CONFIG_CPU_TX39XX is not set
+# CONFIG_CPU_VR41XX is not set
+# CONFIG_CPU_R4300 is not set
+CONFIG_CPU_R4X00=y
+# CONFIG_CPU_TX49XX is not set
+# CONFIG_CPU_R5000 is not set
+# CONFIG_CPU_R5432 is not set
+# CONFIG_CPU_R6000 is not set
+# CONFIG_CPU_NEVADA is not set
+# CONFIG_CPU_R8000 is not set
+# CONFIG_CPU_R10000 is not set
+# CONFIG_CPU_RM7000 is not set
+# CONFIG_CPU_RM9000 is not set
+# CONFIG_CPU_SB1 is not set
+CONFIG_SYS_HAS_CPU_R4X00=y
+CONFIG_SYS_SUPPORTS_32BIT_KERNEL=y
+CONFIG_SYS_SUPPORTS_64BIT_KERNEL=y
+CONFIG_CPU_SUPPORTS_32BIT_KERNEL=y
+CONFIG_CPU_SUPPORTS_64BIT_KERNEL=y
+
+#
+# Kernel type
+#
+CONFIG_32BIT=y
+# CONFIG_64BIT is not set
+CONFIG_PAGE_SIZE_4KB=y
+# CONFIG_PAGE_SIZE_8KB is not set
+# CONFIG_PAGE_SIZE_16KB is not set
+# CONFIG_PAGE_SIZE_64KB is not set
+CONFIG_MIPS_MT_DISABLED=y
+# CONFIG_MIPS_MT_SMP is not set
+# CONFIG_MIPS_MT_SMTC is not set
+# CONFIG_MIPS_VPE_LOADER is not set
+# CONFIG_64BIT_PHYS_ADDR is not set
+CONFIG_CPU_HAS_LLSC=y
+CONFIG_CPU_HAS_SYNC=y
+CONFIG_GENERIC_HARDIRQS=y
+CONFIG_GENERIC_IRQ_PROBE=y
+CONFIG_ARCH_FLATMEM_ENABLE=y
+CONFIG_SELECT_MEMORY_MODEL=y
+CONFIG_FLATMEM_MANUAL=y
+# CONFIG_DISCONTIGMEM_MANUAL is not set
+# CONFIG_SPARSEMEM_MANUAL is not set
+CONFIG_FLATMEM=y
+CONFIG_FLAT_NODE_MEM_MAP=y
+# CONFIG_SPARSEMEM_STATIC is not set
+CONFIG_SPLIT_PTLOCK_CPUS=4
+# CONFIG_RESOURCES_64BIT is not set
+# CONFIG_HZ_48 is not set
+CONFIG_HZ_100=y
+# CONFIG_HZ_128 is not set
+# CONFIG_HZ_250 is not set
+# CONFIG_HZ_256 is not set
+# CONFIG_HZ_1000 is not set
+# CONFIG_HZ_1024 is not set
+CONFIG_SYS_SUPPORTS_100HZ=y
+CONFIG_HZ=100
+# CONFIG_PREEMPT_NONE is not set
+CONFIG_PREEMPT_VOLUNTARY=y
+# CONFIG_PREEMPT is not set
+CONFIG_LOCKDEP_SUPPORT=y
+CONFIG_STACKTRACE_SUPPORT=y
+CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
+
+#
+# Code maturity level options
+#
+CONFIG_EXPERIMENTAL=y
+CONFIG_BROKEN_ON_SMP=y
+CONFIG_INIT_ENV_ARG_LIMIT=32
+
+#
+# General setup
+#
+CONFIG_LOCALVERSION=""
+CONFIG_LOCALVERSION_AUTO=y
+CONFIG_SWAP=y
+CONFIG_SYSVIPC=y
+# CONFIG_IPC_NS is not set
+CONFIG_POSIX_MQUEUE=y
+CONFIG_BSD_PROCESS_ACCT=y
+# CONFIG_BSD_PROCESS_ACCT_V3 is not set
+# CONFIG_TASKSTATS is not set
+# CONFIG_UTS_NS is not set
+# CONFIG_AUDIT is not set
+CONFIG_IKCONFIG=y
+CONFIG_IKCONFIG_PROC=y
+CONFIG_RELAY=y
+CONFIG_INITRAMFS_SOURCE=""
+# CONFIG_CC_OPTIMIZE_FOR_SIZE is not set
+CONFIG_SYSCTL=y
+CONFIG_EMBEDDED=y
+# CONFIG_SYSCTL_SYSCALL is not set
+CONFIG_KALLSYMS=y
+# CONFIG_KALLSYMS_EXTRA_PASS is not set
+CONFIG_HOTPLUG=y
+CONFIG_PRINTK=y
+CONFIG_BUG=y
+CONFIG_ELF_CORE=y
+CONFIG_BASE_FULL=y
+CONFIG_FUTEX=y
+CONFIG_EPOLL=y
+CONFIG_SHMEM=y
+CONFIG_SLAB=y
+CONFIG_VM_EVENT_COUNTERS=y
+CONFIG_RT_MUTEXES=y
+# CONFIG_TINY_SHMEM is not set
+CONFIG_BASE_SMALL=0
+# CONFIG_SLOB is not set
+
+#
+# Loadable module support
+#
+CONFIG_MODULES=y
+CONFIG_MODULE_UNLOAD=y
+# CONFIG_MODULE_FORCE_UNLOAD is not set
+CONFIG_MODVERSIONS=y
+# CONFIG_MODULE_SRCVERSION_ALL is not set
+CONFIG_KMOD=y
+
+#
+# Block layer
+#
+CONFIG_BLOCK=y
+# CONFIG_LBD is not set
+# CONFIG_BLK_DEV_IO_TRACE is not set
+# CONFIG_LSF is not set
+
+#
+# IO Schedulers
+#
+CONFIG_IOSCHED_NOOP=y
+CONFIG_IOSCHED_AS=y
+CONFIG_IOSCHED_DEADLINE=y
+CONFIG_IOSCHED_CFQ=y
+CONFIG_DEFAULT_AS=y
+# CONFIG_DEFAULT_DEADLINE is not set
+# CONFIG_DEFAULT_CFQ is not set
+# CONFIG_DEFAULT_NOOP is not set
+CONFIG_DEFAULT_IOSCHED="anticipatory"
+
+#
+# Bus options (PCI, PCMCIA, EISA, ISA, TC)
+#
+CONFIG_ISA=y
+CONFIG_MMU=y
+CONFIG_I8253=y
+
+#
+# PCCARD (PCMCIA/CardBus) support
+#
+# CONFIG_PCCARD is not set
+
+#
+# PCI Hotplug Support
+#
+
+#
+# Executable file formats
+#
+CONFIG_BINFMT_ELF=y
+CONFIG_BINFMT_MISC=m
+CONFIG_TRAD_SIGNALS=y
+
+#
+# Networking
+#
+CONFIG_NET=y
+
+#
+# Networking options
+#
+# CONFIG_NETDEBUG is not set
+CONFIG_PACKET=m
+CONFIG_PACKET_MMAP=y
+CONFIG_UNIX=y
+CONFIG_XFRM=y
+# CONFIG_XFRM_USER is not set
+# CONFIG_XFRM_SUB_POLICY is not set
+CONFIG_NET_KEY=m
+CONFIG_INET=y
+CONFIG_IP_MULTICAST=y
+# CONFIG_IP_ADVANCED_ROUTER is not set
+CONFIG_IP_FIB_HASH=y
+# CONFIG_IP_PNP is not set
+CONFIG_NET_IPIP=m
+CONFIG_NET_IPGRE=m
+CONFIG_NET_IPGRE_BROADCAST=y
+CONFIG_IP_MROUTE=y
+CONFIG_IP_PIMSM_V1=y
+CONFIG_IP_PIMSM_V2=y
+# CONFIG_ARPD is not set
+# CONFIG_SYN_COOKIES is not set
+# CONFIG_INET_AH is not set
+# CONFIG_INET_ESP is not set
+# CONFIG_INET_IPCOMP is not set
+# CONFIG_INET_XFRM_TUNNEL is not set
+CONFIG_INET_TUNNEL=m
+CONFIG_INET_XFRM_MODE_TRANSPORT=m
+CONFIG_INET_XFRM_MODE_TUNNEL=m
+CONFIG_INET_XFRM_MODE_BEET=y
+CONFIG_INET_DIAG=y
+CONFIG_INET_TCP_DIAG=y
+# CONFIG_TCP_CONG_ADVANCED is not set
+CONFIG_TCP_CONG_CUBIC=y
+CONFIG_DEFAULT_TCP_CONG="cubic"
+
+#
+# IP: Virtual Server Configuration
+#
+# CONFIG_IP_VS is not set
+CONFIG_IPV6=m
+CONFIG_IPV6_PRIVACY=y
+CONFIG_IPV6_ROUTER_PREF=y
+CONFIG_IPV6_ROUTE_INFO=y
+CONFIG_INET6_AH=m
+CONFIG_INET6_ESP=m
+CONFIG_INET6_IPCOMP=m
+# CONFIG_IPV6_MIP6 is not set
+CONFIG_INET6_XFRM_TUNNEL=m
+CONFIG_INET6_TUNNEL=m
+CONFIG_INET6_XFRM_MODE_TRANSPORT=m
+CONFIG_INET6_XFRM_MODE_TUNNEL=m
+CONFIG_INET6_XFRM_MODE_BEET=m
+# CONFIG_INET6_XFRM_MODE_ROUTEOPTIMIZATION is not set
+CONFIG_IPV6_TUNNEL=m
+# CONFIG_IPV6_SUBTREES is not set
+# CONFIG_IPV6_MULTIPLE_TABLES is not set
+CONFIG_NETWORK_SECMARK=y
+CONFIG_NETFILTER=y
+# CONFIG_NETFILTER_DEBUG is not set
+CONFIG_BRIDGE_NETFILTER=y
+
+#
+# Core Netfilter Configuration
+#
+CONFIG_NETFILTER_NETLINK=m
+CONFIG_NETFILTER_NETLINK_QUEUE=m
+CONFIG_NETFILTER_NETLINK_LOG=m
+CONFIG_NETFILTER_XTABLES=m
+CONFIG_NETFILTER_XT_TARGET_CLASSIFY=m
+CONFIG_NETFILTER_XT_TARGET_CONNMARK=m
+# CONFIG_NETFILTER_XT_TARGET_DSCP is not set
+CONFIG_NETFILTER_XT_TARGET_MARK=m
+CONFIG_NETFILTER_XT_TARGET_NFQUEUE=m
+CONFIG_NETFILTER_XT_TARGET_NOTRACK=m
+CONFIG_NETFILTER_XT_TARGET_SECMARK=m
+# CONFIG_NETFILTER_XT_TARGET_CONNSECMARK is not set
+CONFIG_NETFILTER_XT_MATCH_COMMENT=m
+CONFIG_NETFILTER_XT_MATCH_CONNMARK=m
+CONFIG_NETFILTER_XT_MATCH_CONNTRACK=m
+CONFIG_NETFILTER_XT_MATCH_DCCP=m
+# CONFIG_NETFILTER_XT_MATCH_DSCP is not set
+CONFIG_NETFILTER_XT_MATCH_ESP=m
+CONFIG_NETFILTER_XT_MATCH_HELPER=m
+CONFIG_NETFILTER_XT_MATCH_LENGTH=m
+CONFIG_NETFILTER_XT_MATCH_LIMIT=m
+CONFIG_NETFILTER_XT_MATCH_MAC=m
+CONFIG_NETFILTER_XT_MATCH_MARK=m
+CONFIG_NETFILTER_XT_MATCH_POLICY=m
+CONFIG_NETFILTER_XT_MATCH_MULTIPORT=m
+CONFIG_NETFILTER_XT_MATCH_PHYSDEV=m
+CONFIG_NETFILTER_XT_MATCH_PKTTYPE=m
+CONFIG_NETFILTER_XT_MATCH_QUOTA=m
+CONFIG_NETFILTER_XT_MATCH_REALM=m
+CONFIG_NETFILTER_XT_MATCH_SCTP=m
+CONFIG_NETFILTER_XT_MATCH_STATE=m
+CONFIG_NETFILTER_XT_MATCH_STATISTIC=m
+CONFIG_NETFILTER_XT_MATCH_STRING=m
+CONFIG_NETFILTER_XT_MATCH_TCPMSS=m
+
+#
+# IP: Netfilter Configuration
+#
+CONFIG_IP_NF_CONNTRACK=m
+# CONFIG_IP_NF_CT_ACCT is not set
+CONFIG_IP_NF_CONNTRACK_MARK=y
+CONFIG_IP_NF_CONNTRACK_SECMARK=y
+CONFIG_IP_NF_CONNTRACK_EVENTS=y
+CONFIG_IP_NF_CONNTRACK_NETLINK=m
+CONFIG_IP_NF_CT_PROTO_SCTP=m
+CONFIG_IP_NF_FTP=m
+CONFIG_IP_NF_IRC=m
+# CONFIG_IP_NF_NETBIOS_NS is not set
+CONFIG_IP_NF_TFTP=m
+CONFIG_IP_NF_AMANDA=m
+CONFIG_IP_NF_PPTP=m
+CONFIG_IP_NF_H323=m
+CONFIG_IP_NF_SIP=m
+CONFIG_IP_NF_QUEUE=m
+CONFIG_IP_NF_IPTABLES=m
+CONFIG_IP_NF_MATCH_IPRANGE=m
+CONFIG_IP_NF_MATCH_TOS=m
+CONFIG_IP_NF_MATCH_RECENT=m
+CONFIG_IP_NF_MATCH_ECN=m
+CONFIG_IP_NF_MATCH_AH=m
+CONFIG_IP_NF_MATCH_TTL=m
+CONFIG_IP_NF_MATCH_OWNER=m
+CONFIG_IP_NF_MATCH_ADDRTYPE=m
+CONFIG_IP_NF_MATCH_HASHLIMIT=m
+CONFIG_IP_NF_FILTER=m
+CONFIG_IP_NF_TARGET_REJECT=m
+CONFIG_IP_NF_TARGET_LOG=m
+CONFIG_IP_NF_TARGET_ULOG=m
+CONFIG_IP_NF_TARGET_TCPMSS=m
+CONFIG_IP_NF_NAT=m
+CONFIG_IP_NF_NAT_NEEDED=y
+CONFIG_IP_NF_TARGET_MASQUERADE=m
+CONFIG_IP_NF_TARGET_REDIRECT=m
+CONFIG_IP_NF_TARGET_NETMAP=m
+CONFIG_IP_NF_TARGET_SAME=m
+CONFIG_IP_NF_NAT_SNMP_BASIC=m
+CONFIG_IP_NF_NAT_IRC=m
+CONFIG_IP_NF_NAT_FTP=m
+CONFIG_IP_NF_NAT_TFTP=m
+CONFIG_IP_NF_NAT_AMANDA=m
+CONFIG_IP_NF_NAT_PPTP=m
+CONFIG_IP_NF_NAT_H323=m
+CONFIG_IP_NF_NAT_SIP=m
+CONFIG_IP_NF_MANGLE=m
+CONFIG_IP_NF_TARGET_TOS=m
+CONFIG_IP_NF_TARGET_ECN=m
+CONFIG_IP_NF_TARGET_TTL=m
+CONFIG_IP_NF_TARGET_CLUSTERIP=m
+CONFIG_IP_NF_RAW=m
+CONFIG_IP_NF_ARPTABLES=m
+CONFIG_IP_NF_ARPFILTER=m
+CONFIG_IP_NF_ARP_MANGLE=m
+
+#
+# IPv6: Netfilter Configuration (EXPERIMENTAL)
+#
+CONFIG_IP6_NF_QUEUE=m
+CONFIG_IP6_NF_IPTABLES=m
+CONFIG_IP6_NF_MATCH_RT=m
+CONFIG_IP6_NF_MATCH_OPTS=m
+CONFIG_IP6_NF_MATCH_FRAG=m
+CONFIG_IP6_NF_MATCH_HL=m
+CONFIG_IP6_NF_MATCH_OWNER=m
+CONFIG_IP6_NF_MATCH_IPV6HEADER=m
+CONFIG_IP6_NF_MATCH_AH=m
+CONFIG_IP6_NF_MATCH_EUI64=m
+CONFIG_IP6_NF_FILTER=m
+CONFIG_IP6_NF_TARGET_LOG=m
+CONFIG_IP6_NF_TARGET_REJECT=m
+CONFIG_IP6_NF_MANGLE=m
+CONFIG_IP6_NF_TARGET_HL=m
+CONFIG_IP6_NF_RAW=m
+
+#
+# DECnet: Netfilter Configuration
+#
+CONFIG_DECNET_NF_GRABULATOR=m
+
+#
+# Bridge: Netfilter Configuration
+#
+CONFIG_BRIDGE_NF_EBTABLES=m
+CONFIG_BRIDGE_EBT_BROUTE=m
+CONFIG_BRIDGE_EBT_T_FILTER=m
+CONFIG_BRIDGE_EBT_T_NAT=m
+CONFIG_BRIDGE_EBT_802_3=m
+CONFIG_BRIDGE_EBT_AMONG=m
+CONFIG_BRIDGE_EBT_ARP=m
+CONFIG_BRIDGE_EBT_IP=m
+CONFIG_BRIDGE_EBT_LIMIT=m
+CONFIG_BRIDGE_EBT_MARK=m
+CONFIG_BRIDGE_EBT_PKTTYPE=m
+CONFIG_BRIDGE_EBT_STP=m
+CONFIG_BRIDGE_EBT_VLAN=m
+CONFIG_BRIDGE_EBT_ARPREPLY=m
+CONFIG_BRIDGE_EBT_DNAT=m
+CONFIG_BRIDGE_EBT_MARK_T=m
+CONFIG_BRIDGE_EBT_REDIRECT=m
+CONFIG_BRIDGE_EBT_SNAT=m
+CONFIG_BRIDGE_EBT_LOG=m
+CONFIG_BRIDGE_EBT_ULOG=m
+
+#
+# DCCP Configuration (EXPERIMENTAL)
+#
+# CONFIG_IP_DCCP is not set
+
+#
+# SCTP Configuration (EXPERIMENTAL)
+#
+# CONFIG_IP_SCTP is not set
+
+#
+# TIPC Configuration (EXPERIMENTAL)
+#
+# CONFIG_TIPC is not set
+# CONFIG_ATM is not set
+CONFIG_BRIDGE=m
+# CONFIG_VLAN_8021Q is not set
+CONFIG_DECNET=m
+# CONFIG_DECNET_ROUTER is not set
+CONFIG_LLC=m
+# CONFIG_LLC2 is not set
+# CONFIG_IPX is not set
+# CONFIG_ATALK is not set
+# CONFIG_X25 is not set
+# CONFIG_LAPB is not set
+# CONFIG_ECONET is not set
+# CONFIG_WAN_ROUTER is not set
+
+#
+# QoS and/or fair queueing
+#
+CONFIG_NET_SCHED=y
+CONFIG_NET_SCH_CLK_JIFFIES=y
+# CONFIG_NET_SCH_CLK_GETTIMEOFDAY is not set
+# CONFIG_NET_SCH_CLK_CPU is not set
+
+#
+# Queueing/Scheduling
+#
+CONFIG_NET_SCH_CBQ=m
+CONFIG_NET_SCH_HTB=m
+CONFIG_NET_SCH_HFSC=m
+CONFIG_NET_SCH_PRIO=m
+CONFIG_NET_SCH_RED=m
+CONFIG_NET_SCH_SFQ=m
+CONFIG_NET_SCH_TEQL=m
+CONFIG_NET_SCH_TBF=m
+CONFIG_NET_SCH_GRED=m
+CONFIG_NET_SCH_DSMARK=m
+CONFIG_NET_SCH_NETEM=m
+CONFIG_NET_SCH_INGRESS=m
+
+#
+# Classification
+#
+CONFIG_NET_CLS=y
+CONFIG_NET_CLS_BASIC=m
+CONFIG_NET_CLS_TCINDEX=m
+CONFIG_NET_CLS_ROUTE4=m
+CONFIG_NET_CLS_ROUTE=y
+CONFIG_NET_CLS_FW=m
+CONFIG_NET_CLS_U32=m
+# CONFIG_CLS_U32_PERF is not set
+# CONFIG_CLS_U32_MARK is not set
+CONFIG_NET_CLS_RSVP=m
+CONFIG_NET_CLS_RSVP6=m
+# CONFIG_NET_EMATCH is not set
+# CONFIG_NET_CLS_ACT is not set
+CONFIG_NET_CLS_POLICE=y
+# CONFIG_NET_CLS_IND is not set
+CONFIG_NET_ESTIMATOR=y
+
+#
+# Network testing
+#
+# CONFIG_NET_PKTGEN is not set
+CONFIG_HAMRADIO=y
+
+#
+# Packet Radio protocols
+#
+CONFIG_AX25=m
+CONFIG_AX25_DAMA_SLAVE=y
+CONFIG_NETROM=m
+CONFIG_ROSE=m
+
+#
+# AX.25 network device drivers
+#
+CONFIG_MKISS=m
+CONFIG_6PACK=m
+CONFIG_BPQETHER=m
+# CONFIG_BAYCOM_SER_FDX is not set
+# CONFIG_BAYCOM_SER_HDX is not set
+# CONFIG_BAYCOM_PAR is not set
+# CONFIG_BAYCOM_EPP is not set
+# CONFIG_YAM is not set
+# CONFIG_IRDA is not set
+# CONFIG_BT is not set
+CONFIG_IEEE80211=m
+# CONFIG_IEEE80211_DEBUG is not set
+CONFIG_IEEE80211_CRYPT_WEP=m
+CONFIG_IEEE80211_CRYPT_CCMP=m
+CONFIG_IEEE80211_SOFTMAC=m
+# CONFIG_IEEE80211_SOFTMAC_DEBUG is not set
+CONFIG_WIRELESS_EXT=y
+
+#
+# Device Drivers
+#
+
+#
+# Generic Driver Options
+#
+CONFIG_STANDALONE=y
+CONFIG_PREVENT_FIRMWARE_BUILD=y
+CONFIG_FW_LOADER=y
+# CONFIG_SYS_HYPERVISOR is not set
+
+#
+# Connector - unified userspace <-> kernelspace linker
+#
+CONFIG_CONNECTOR=m
+
+#
+# Memory Technology Devices (MTD)
+#
+# CONFIG_MTD is not set
+
+#
+# Parallel port support
+#
+CONFIG_PARPORT=m
+CONFIG_PARPORT_PC=m
+# CONFIG_PARPORT_PC_FIFO is not set
+# CONFIG_PARPORT_PC_SUPERIO is not set
+# CONFIG_PARPORT_GSC is not set
+# CONFIG_PARPORT_AX88796 is not set
+CONFIG_PARPORT_1284=y
+
+#
+# Plug and Play support
+#
+# CONFIG_PNP is not set
+
+#
+# Block devices
+#
+CONFIG_BLK_DEV_FD=m
+CONFIG_PARIDE=m
+CONFIG_PARIDE_PARPORT=m
+
+#
+# Parallel IDE high-level drivers
+#
+CONFIG_PARIDE_PD=m
+CONFIG_PARIDE_PCD=m
+CONFIG_PARIDE_PF=m
+CONFIG_PARIDE_PT=m
+CONFIG_PARIDE_PG=m
+
+#
+# Parallel IDE protocol modules
+#
+CONFIG_PARIDE_ATEN=m
+CONFIG_PARIDE_BPCK=m
+CONFIG_PARIDE_BPCK6=m
+CONFIG_PARIDE_COMM=m
+CONFIG_PARIDE_DSTR=m
+CONFIG_PARIDE_FIT2=m
+CONFIG_PARIDE_FIT3=m
+CONFIG_PARIDE_EPAT=m
+# CONFIG_PARIDE_EPATC8 is not set
+CONFIG_PARIDE_EPIA=m
+CONFIG_PARIDE_FRIQ=m
+CONFIG_PARIDE_FRPW=m
+CONFIG_PARIDE_KBIC=m
+CONFIG_PARIDE_KTTI=m
+CONFIG_PARIDE_ON20=m
+CONFIG_PARIDE_ON26=m
+# CONFIG_BLK_DEV_COW_COMMON is not set
+CONFIG_BLK_DEV_LOOP=m
+CONFIG_BLK_DEV_CRYPTOLOOP=m
+CONFIG_BLK_DEV_NBD=m
+CONFIG_BLK_DEV_RAM=m
+CONFIG_BLK_DEV_RAM_COUNT=16
+CONFIG_BLK_DEV_RAM_SIZE=4096
+CONFIG_BLK_DEV_RAM_BLOCKSIZE=1024
+# CONFIG_BLK_DEV_INITRD is not set
+CONFIG_CDROM_PKTCDVD=m
+CONFIG_CDROM_PKTCDVD_BUFFERS=8
+# CONFIG_CDROM_PKTCDVD_WCACHE is not set
+CONFIG_ATA_OVER_ETH=m
+
+#
+# ATA/ATAPI/MFM/RLL support
+#
+# CONFIG_IDE is not set
+
+#
+# SCSI device support
+#
+CONFIG_RAID_ATTRS=m
+CONFIG_SCSI=y
+CONFIG_SCSI_NETLINK=y
+CONFIG_SCSI_PROC_FS=y
+
+#
+# SCSI support type (disk, tape, CD-ROM)
+#
+CONFIG_BLK_DEV_SD=y
+CONFIG_CHR_DEV_ST=m
+# CONFIG_CHR_DEV_OSST is not set
+CONFIG_BLK_DEV_SR=m
+CONFIG_BLK_DEV_SR_VENDOR=y
+# CONFIG_CHR_DEV_SG is not set
+# CONFIG_CHR_DEV_SCH is not set
+
+#
+# Some SCSI devices (e.g. CD jukebox) support multiple LUNs
+#
+# CONFIG_SCSI_MULTI_LUN is not set
+CONFIG_SCSI_CONSTANTS=y
+# CONFIG_SCSI_LOGGING is not set
+
+#
+# SCSI Transports
+#
+CONFIG_SCSI_SPI_ATTRS=y
+CONFIG_SCSI_FC_ATTRS=y
+CONFIG_SCSI_ISCSI_ATTRS=m
+CONFIG_SCSI_SAS_ATTRS=m
+# CONFIG_SCSI_SAS_LIBSAS is not set
+
+#
+# SCSI low-level drivers
+#
+CONFIG_ISCSI_TCP=m
+# CONFIG_SCSI_AHA152X is not set
+# CONFIG_SCSI_AIC7XXX_OLD is not set
+# CONFIG_SCSI_IN2000 is not set
+# CONFIG_SCSI_DTC3280 is not set
+# CONFIG_SCSI_FUTURE_DOMAIN is not set
+# CONFIG_SCSI_GENERIC_NCR5380 is not set
+# CONFIG_SCSI_GENERIC_NCR5380_MMIO is not set
+CONFIG_SCSI_PPA=m
+CONFIG_SCSI_IMM=m
+# CONFIG_SCSI_IZIP_EPP16 is not set
+# CONFIG_SCSI_IZIP_SLOW_CTR is not set
+# CONFIG_SCSI_NCR53C406A is not set
+# CONFIG_SCSI_PAS16 is not set
+# CONFIG_SCSI_PSI240I is not set
+# CONFIG_SCSI_QLOGIC_FAS is not set
+# CONFIG_SCSI_SYM53C416 is not set
+# CONFIG_SCSI_T128 is not set
+# CONFIG_SCSI_DEBUG is not set
+CONFIG_JAZZ_ESP=y
+
+#
+# Serial ATA (prod) and Parallel ATA (experimental) drivers
+#
+# CONFIG_ATA is not set
+
+#
+# Old CD-ROM drivers (not SCSI, not IDE)
+#
+# CONFIG_CD_NO_IDESCSI is not set
+
+#
+# Multi-device support (RAID and LVM)
+#
+CONFIG_MD=y
+CONFIG_BLK_DEV_MD=m
+CONFIG_MD_LINEAR=m
+CONFIG_MD_RAID0=m
+CONFIG_MD_RAID1=m
+CONFIG_MD_RAID10=m
+CONFIG_MD_RAID456=m
+CONFIG_MD_RAID5_RESHAPE=y
+CONFIG_MD_MULTIPATH=m
+CONFIG_MD_FAULTY=m
+CONFIG_BLK_DEV_DM=m
+# CONFIG_DM_DEBUG is not set
+# CONFIG_DM_CRYPT is not set
+CONFIG_DM_SNAPSHOT=m
+CONFIG_DM_MIRROR=m
+CONFIG_DM_ZERO=m
+CONFIG_DM_MULTIPATH=m
+CONFIG_DM_MULTIPATH_EMC=m
+
+#
+# Fusion MPT device support
+#
+# CONFIG_FUSION is not set
+
+#
+# IEEE 1394 (FireWire) support
+#
+
+#
+# I2O device support
+#
+
+#
+# Network device support
+#
+CONFIG_NETDEVICES=y
+CONFIG_DUMMY=m
+CONFIG_BONDING=m
+CONFIG_EQUALIZER=m
+CONFIG_TUN=m
+
+#
+# ARCnet devices
+#
+# CONFIG_ARCNET is not set
+
+#
+# PHY device support
+#
+CONFIG_PHYLIB=m
+
+#
+# MII PHY device drivers
+#
+CONFIG_MARVELL_PHY=m
+CONFIG_DAVICOM_PHY=m
+CONFIG_QSEMI_PHY=m
+CONFIG_LXT_PHY=m
+CONFIG_CICADA_PHY=m
+CONFIG_VITESSE_PHY=m
+CONFIG_SMSC_PHY=m
+# CONFIG_FIXED_PHY is not set
+
+#
+# Ethernet (10 or 100Mbit)
+#
+CONFIG_NET_ETHERNET=y
+CONFIG_MII=y
+CONFIG_MIPS_JAZZ_SONIC=y
+# CONFIG_NET_VENDOR_3COM is not set
+# CONFIG_NET_VENDOR_SMC is not set
+# CONFIG_DM9000 is not set
+# CONFIG_NET_VENDOR_RACAL is not set
+# CONFIG_AT1700 is not set
+# CONFIG_DEPCA is not set
+# CONFIG_HP100 is not set
+CONFIG_NET_ISA=y
+# CONFIG_E2100 is not set
+# CONFIG_EWRK3 is not set
+# CONFIG_EEXPRESS is not set
+# CONFIG_EEXPRESS_PRO is not set
+# CONFIG_HPLAN_PLUS is not set
+# CONFIG_HPLAN is not set
+# CONFIG_LP486E is not set
+# CONFIG_ETH16I is not set
+CONFIG_NE2000=m
+# CONFIG_SEEQ8005 is not set
+CONFIG_NET_PCI=y
+# CONFIG_AC3200 is not set
+# CONFIG_APRICOT is not set
+# CONFIG_CS89x0 is not set
+# CONFIG_LAN_SAA9730 is not set
+# CONFIG_NET_POCKET is not set
+
+#
+# Ethernet (1000 Mbit)
+#
+
+#
+# Ethernet (10000 Mbit)
+#
+
+#
+# Token Ring devices
+#
+# CONFIG_TR is not set
+
+#
+# Wireless LAN (non-hamradio)
+#
+# CONFIG_NET_RADIO is not set
+
+#
+# Wan interfaces
+#
+# CONFIG_WAN is not set
+CONFIG_PLIP=m
+# CONFIG_PPP is not set
+# CONFIG_SLIP is not set
+# CONFIG_SHAPER is not set
+# CONFIG_NETCONSOLE is not set
+# CONFIG_NETPOLL is not set
+# CONFIG_NET_POLL_CONTROLLER is not set
+
+#
+# ISDN subsystem
+#
+# CONFIG_ISDN is not set
+
+#
+# Telephony Support
+#
+# CONFIG_PHONE is not set
+
+#
+# Input device support
+#
+CONFIG_INPUT=y
+CONFIG_INPUT_FF_MEMLESS=m
+
+#
+# Userland interfaces
+#
+CONFIG_INPUT_MOUSEDEV=y
+CONFIG_INPUT_MOUSEDEV_PSAUX=y
+CONFIG_INPUT_MOUSEDEV_SCREEN_X=1024
+CONFIG_INPUT_MOUSEDEV_SCREEN_Y=768
+# CONFIG_INPUT_JOYDEV is not set
+# CONFIG_INPUT_TSDEV is not set
+# CONFIG_INPUT_EVDEV is not set
+# CONFIG_INPUT_EVBUG is not set
+
+#
+# Input Device Drivers
+#
+CONFIG_INPUT_KEYBOARD=y
+CONFIG_KEYBOARD_ATKBD=y
+# CONFIG_KEYBOARD_SUNKBD is not set
+# CONFIG_KEYBOARD_LKKBD is not set
+# CONFIG_KEYBOARD_XTKBD is not set
+# CONFIG_KEYBOARD_NEWTON is not set
+# CONFIG_KEYBOARD_STOWAWAY is not set
+CONFIG_INPUT_MOUSE=y
+CONFIG_MOUSE_PS2=y
+# CONFIG_MOUSE_SERIAL is not set
+# CONFIG_MOUSE_INPORT is not set
+# CONFIG_MOUSE_LOGIBM is not set
+# CONFIG_MOUSE_PC110PAD is not set
+# CONFIG_MOUSE_VSXXXAA is not set
+# CONFIG_INPUT_JOYSTICK is not set
+# CONFIG_INPUT_TOUCHSCREEN is not set
+# CONFIG_INPUT_MISC is not set
+
+#
+# Hardware I/O ports
+#
+CONFIG_SERIO=y
+CONFIG_SERIO_I8042=y
+CONFIG_SERIO_SERPORT=y
+CONFIG_SERIO_PARKBD=m
+CONFIG_SERIO_LIBPS2=y
+CONFIG_SERIO_RAW=m
+# CONFIG_GAMEPORT is not set
+
+#
+# Character devices
+#
+CONFIG_VT=y
+CONFIG_VT_CONSOLE=y
+CONFIG_HW_CONSOLE=y
+CONFIG_VT_HW_CONSOLE_BINDING=y
+# CONFIG_SERIAL_NONSTANDARD is not set
+
+#
+# Serial drivers
+#
+CONFIG_SERIAL_8250=m
+CONFIG_SERIAL_8250_NR_UARTS=4
+CONFIG_SERIAL_8250_RUNTIME_UARTS=4
+CONFIG_SERIAL_8250_EXTENDED=y
+# CONFIG_SERIAL_8250_MANY_PORTS is not set
+CONFIG_SERIAL_8250_SHARE_IRQ=y
+CONFIG_SERIAL_8250_DETECT_IRQ=y
+CONFIG_SERIAL_8250_RSA=y
+
+#
+# Non-8250 serial port support
+#
+CONFIG_SERIAL_CORE=m
+CONFIG_UNIX98_PTYS=y
+CONFIG_LEGACY_PTYS=y
+CONFIG_LEGACY_PTY_COUNT=256
+CONFIG_PRINTER=m
+# CONFIG_LP_CONSOLE is not set
+CONFIG_PPDEV=m
+CONFIG_TIPAR=m
+
+#
+# IPMI
+#
+# CONFIG_IPMI_HANDLER is not set
+
+#
+# Watchdog Cards
+#
+# CONFIG_WATCHDOG is not set
+# CONFIG_HW_RANDOM is not set
+CONFIG_RTC=m
+# CONFIG_GEN_RTC is not set
+# CONFIG_DTLK is not set
+# CONFIG_R3964 is not set
+
+#
+# Ftape, the floppy tape device driver
+#
+# CONFIG_RAW_DRIVER is not set
+
+#
+# TPM devices
+#
+# CONFIG_TCG_TPM is not set
+# CONFIG_TELCLOCK is not set
+
+#
+# I2C support
+#
+# CONFIG_I2C is not set
+
+#
+# SPI support
+#
+# CONFIG_SPI is not set
+# CONFIG_SPI_MASTER is not set
+
+#
+# Dallas's 1-wire bus
+#
+CONFIG_W1=m
+CONFIG_W1_CON=y
+
+#
+# 1-wire Bus Masters
+#
+
+#
+# 1-wire Slaves
+#
+# CONFIG_W1_SLAVE_THERM is not set
+# CONFIG_W1_SLAVE_SMEM is not set
+# CONFIG_W1_SLAVE_DS2433 is not set
+
+#
+# Hardware Monitoring support
+#
+# CONFIG_HWMON is not set
+# CONFIG_HWMON_VID is not set
+
+#
+# Misc devices
+#
+# CONFIG_TIFM_CORE is not set
+
+#
+# Multimedia devices
+#
+# CONFIG_VIDEO_DEV is not set
+
+#
+# Digital Video Broadcasting Devices
+#
+# CONFIG_DVB is not set
+
+#
+# Graphics support
+#
+# CONFIG_FIRMWARE_EDID is not set
+# CONFIG_FB is not set
+
+#
+# Console display driver support
+#
+CONFIG_VGA_CONSOLE=y
+# CONFIG_VGACON_SOFT_SCROLLBACK is not set
+# CONFIG_MDA_CONSOLE is not set
+CONFIG_DUMMY_CONSOLE=y
+# CONFIG_BACKLIGHT_LCD_SUPPORT is not set
+
+#
+# Sound
+#
+# CONFIG_SOUND is not set
+
+#
+# USB support
+#
+# CONFIG_USB_ARCH_HAS_HCD is not set
+# CONFIG_USB_ARCH_HAS_OHCI is not set
+# CONFIG_USB_ARCH_HAS_EHCI is not set
+
+#
+# NOTE: USB_STORAGE enables SCSI, and 'SCSI disk support'
+#
+
+#
+# USB Gadget Support
+#
+# CONFIG_USB_GADGET is not set
+
+#
+# MMC/SD Card support
+#
+# CONFIG_MMC is not set
+
+#
+# LED devices
+#
+# CONFIG_NEW_LEDS is not set
+
+#
+# LED drivers
+#
+
+#
+# LED Triggers
+#
+
+#
+# InfiniBand support
+#
+
+#
+# EDAC - error detection and reporting (RAS) (EXPERIMENTAL)
+#
+
+#
+# Real Time Clock
+#
+# CONFIG_RTC_CLASS is not set
+
+#
+# DMA Engine support
+#
+# CONFIG_DMA_ENGINE is not set
+
+#
+# DMA Clients
+#
+
+#
+# DMA Devices
+#
+
+#
+# File systems
+#
+CONFIG_EXT2_FS=m
+# CONFIG_EXT2_FS_XATTR is not set
+# CONFIG_EXT2_FS_XIP is not set
+CONFIG_EXT3_FS=y
+CONFIG_EXT3_FS_XATTR=y
+# CONFIG_EXT3_FS_POSIX_ACL is not set
+# CONFIG_EXT3_FS_SECURITY is not set
+CONFIG_JBD=y
+# CONFIG_JBD_DEBUG is not set
+CONFIG_FS_MBCACHE=y
+CONFIG_REISERFS_FS=m
+# CONFIG_REISERFS_CHECK is not set
+# CONFIG_REISERFS_PROC_INFO is not set
+CONFIG_REISERFS_FS_XATTR=y
+CONFIG_REISERFS_FS_POSIX_ACL=y
+CONFIG_REISERFS_FS_SECURITY=y
+# CONFIG_JFS_FS is not set
+CONFIG_FS_POSIX_ACL=y
+CONFIG_XFS_FS=m
+CONFIG_XFS_QUOTA=y
+CONFIG_XFS_SECURITY=y
+# CONFIG_XFS_POSIX_ACL is not set
+# CONFIG_XFS_RT is not set
+# CONFIG_GFS2_FS is not set
+# CONFIG_OCFS2_FS is not set
+CONFIG_MINIX_FS=m
+CONFIG_ROMFS_FS=m
+CONFIG_INOTIFY=y
+CONFIG_INOTIFY_USER=y
+# CONFIG_QUOTA is not set
+CONFIG_QUOTACTL=y
+CONFIG_DNOTIFY=y
+CONFIG_AUTOFS_FS=m
+CONFIG_AUTOFS4_FS=m
+CONFIG_FUSE_FS=m
+
+#
+# CD-ROM/DVD Filesystems
+#
+CONFIG_ISO9660_FS=m
+CONFIG_JOLIET=y
+CONFIG_ZISOFS=y
+CONFIG_ZISOFS_FS=m
+CONFIG_UDF_FS=m
+CONFIG_UDF_NLS=y
+
+#
+# DOS/FAT/NT Filesystems
+#
+CONFIG_FAT_FS=m
+CONFIG_MSDOS_FS=m
+CONFIG_VFAT_FS=m
+CONFIG_FAT_DEFAULT_CODEPAGE=437
+CONFIG_FAT_DEFAULT_IOCHARSET="iso8859-1"
+CONFIG_NTFS_FS=m
+# CONFIG_NTFS_DEBUG is not set
+# CONFIG_NTFS_RW is not set
+
+#
+# Pseudo filesystems
+#
+CONFIG_PROC_FS=y
+CONFIG_PROC_KCORE=y
+CONFIG_PROC_SYSCTL=y
+CONFIG_SYSFS=y
+CONFIG_TMPFS=y
+# CONFIG_TMPFS_POSIX_ACL is not set
+# CONFIG_HUGETLB_PAGE is not set
+CONFIG_RAMFS=y
+# CONFIG_CONFIGFS_FS is not set
+
+#
+# Miscellaneous filesystems
+#
+CONFIG_ADFS_FS=m
+# CONFIG_ADFS_FS_RW is not set
+CONFIG_AFFS_FS=m
+# CONFIG_ECRYPT_FS is not set
+CONFIG_HFS_FS=m
+# CONFIG_HFSPLUS_FS is not set
+CONFIG_BEFS_FS=m
+# CONFIG_BEFS_DEBUG is not set
+CONFIG_BFS_FS=m
+CONFIG_EFS_FS=m
+CONFIG_CRAMFS=m
+CONFIG_VXFS_FS=m
+CONFIG_HPFS_FS=m
+CONFIG_QNX4FS_FS=m
+CONFIG_SYSV_FS=m
+CONFIG_UFS_FS=m
+# CONFIG_UFS_FS_WRITE is not set
+# CONFIG_UFS_DEBUG is not set
+
+#
+# Network File Systems
+#
+CONFIG_NFS_FS=m
+CONFIG_NFS_V3=y
+# CONFIG_NFS_V3_ACL is not set
+# CONFIG_NFS_V4 is not set
+# CONFIG_NFS_DIRECTIO is not set
+CONFIG_NFSD=m
+CONFIG_NFSD_V3=y
+# CONFIG_NFSD_V3_ACL is not set
+# CONFIG_NFSD_V4 is not set
+CONFIG_NFSD_TCP=y
+CONFIG_LOCKD=m
+CONFIG_LOCKD_V4=y
+CONFIG_EXPORTFS=m
+CONFIG_NFS_COMMON=y
+CONFIG_SUNRPC=m
+CONFIG_SUNRPC_GSS=m
+CONFIG_RPCSEC_GSS_KRB5=m
+CONFIG_RPCSEC_GSS_SPKM3=m
+CONFIG_SMB_FS=m
+# CONFIG_SMB_NLS_DEFAULT is not set
+CONFIG_CIFS=m
+# CONFIG_CIFS_STATS is not set
+# CONFIG_CIFS_WEAK_PW_HASH is not set
+# CONFIG_CIFS_XATTR is not set
+# CONFIG_CIFS_DEBUG2 is not set
+# CONFIG_CIFS_EXPERIMENTAL is not set
+CONFIG_NCP_FS=m
+CONFIG_NCPFS_PACKET_SIGNING=y
+CONFIG_NCPFS_IOCTL_LOCKING=y
+CONFIG_NCPFS_STRONG=y
+CONFIG_NCPFS_NFS_NS=y
+CONFIG_NCPFS_OS2_NS=y
+CONFIG_NCPFS_SMALLDOS=y
+CONFIG_NCPFS_NLS=y
+CONFIG_NCPFS_EXTRAS=y
+CONFIG_CODA_FS=m
+CONFIG_CODA_FS_OLD_API=y
+CONFIG_AFS_FS=m
+CONFIG_RXRPC=m
+# CONFIG_9P_FS is not set
+
+#
+# Partition Types
+#
+CONFIG_PARTITION_ADVANCED=y
+# CONFIG_ACORN_PARTITION is not set
+# CONFIG_OSF_PARTITION is not set
+# CONFIG_AMIGA_PARTITION is not set
+# CONFIG_ATARI_PARTITION is not set
+# CONFIG_MAC_PARTITION is not set
+CONFIG_MSDOS_PARTITION=y
+# CONFIG_BSD_DISKLABEL is not set
+# CONFIG_MINIX_SUBPARTITION is not set
+# CONFIG_SOLARIS_X86_PARTITION is not set
+# CONFIG_UNIXWARE_DISKLABEL is not set
+# CONFIG_LDM_PARTITION is not set
+# CONFIG_SGI_PARTITION is not set
+# CONFIG_ULTRIX_PARTITION is not set
+# CONFIG_SUN_PARTITION is not set
+# CONFIG_KARMA_PARTITION is not set
+# CONFIG_EFI_PARTITION is not set
+
+#
+# Native Language Support
+#
+CONFIG_NLS=m
+CONFIG_NLS_DEFAULT="iso8859-1"
+CONFIG_NLS_CODEPAGE_437=m
+CONFIG_NLS_CODEPAGE_737=m
+CONFIG_NLS_CODEPAGE_775=m
+CONFIG_NLS_CODEPAGE_850=m
+CONFIG_NLS_CODEPAGE_852=m
+CONFIG_NLS_CODEPAGE_855=m
+CONFIG_NLS_CODEPAGE_857=m
+CONFIG_NLS_CODEPAGE_860=m
+CONFIG_NLS_CODEPAGE_861=m
+CONFIG_NLS_CODEPAGE_862=m
+CONFIG_NLS_CODEPAGE_863=m
+CONFIG_NLS_CODEPAGE_864=m
+CONFIG_NLS_CODEPAGE_865=m
+CONFIG_NLS_CODEPAGE_866=m
+CONFIG_NLS_CODEPAGE_869=m
+CONFIG_NLS_CODEPAGE_936=m
+CONFIG_NLS_CODEPAGE_950=m
+CONFIG_NLS_CODEPAGE_932=m
+CONFIG_NLS_CODEPAGE_949=m
+CONFIG_NLS_CODEPAGE_874=m
+CONFIG_NLS_ISO8859_8=m
+CONFIG_NLS_CODEPAGE_1250=m
+CONFIG_NLS_CODEPAGE_1251=m
+CONFIG_NLS_ASCII=m
+CONFIG_NLS_ISO8859_1=m
+CONFIG_NLS_ISO8859_2=m
+CONFIG_NLS_ISO8859_3=m
+CONFIG_NLS_ISO8859_4=m
+CONFIG_NLS_ISO8859_5=m
+CONFIG_NLS_ISO8859_6=m
+CONFIG_NLS_ISO8859_7=m
+CONFIG_NLS_ISO8859_9=m
+CONFIG_NLS_ISO8859_13=m
+CONFIG_NLS_ISO8859_14=m
+CONFIG_NLS_ISO8859_15=m
+CONFIG_NLS_KOI8_R=m
+CONFIG_NLS_KOI8_U=m
+CONFIG_NLS_UTF8=m
+
+#
+# Distributed Lock Manager
+#
+
+#
+# Profiling support
+#
+# CONFIG_PROFILING is not set
+
+#
+# Kernel hacking
+#
+CONFIG_TRACE_IRQFLAGS_SUPPORT=y
+# CONFIG_PRINTK_TIME is not set
+CONFIG_ENABLE_MUST_CHECK=y
+# CONFIG_MAGIC_SYSRQ is not set
+# CONFIG_UNUSED_SYMBOLS is not set
+# CONFIG_DEBUG_KERNEL is not set
+CONFIG_LOG_BUF_SHIFT=14
+# CONFIG_DEBUG_FS is not set
+CONFIG_CROSSCOMPILE=y
+CONFIG_CMDLINE=""
+
+#
+# Security options
+#
+CONFIG_KEYS=y
+CONFIG_KEYS_DEBUG_PROC_KEYS=y
+# CONFIG_SECURITY is not set
+
+#
+# Cryptographic options
+#
+CONFIG_CRYPTO=y
+CONFIG_CRYPTO_ALGAPI=y
+CONFIG_CRYPTO_BLKCIPHER=m
+CONFIG_CRYPTO_HASH=y
+CONFIG_CRYPTO_MANAGER=m
+CONFIG_CRYPTO_HMAC=y
+CONFIG_CRYPTO_NULL=m
+CONFIG_CRYPTO_MD4=m
+CONFIG_CRYPTO_MD5=m
+CONFIG_CRYPTO_SHA1=m
+CONFIG_CRYPTO_SHA256=m
+CONFIG_CRYPTO_SHA512=m
+CONFIG_CRYPTO_WP512=m
+CONFIG_CRYPTO_TGR192=m
+CONFIG_CRYPTO_ECB=m
+CONFIG_CRYPTO_CBC=m
+CONFIG_CRYPTO_DES=m
+CONFIG_CRYPTO_BLOWFISH=m
+CONFIG_CRYPTO_TWOFISH=m
+CONFIG_CRYPTO_TWOFISH_COMMON=m
+CONFIG_CRYPTO_SERPENT=m
+CONFIG_CRYPTO_AES=m
+CONFIG_CRYPTO_CAST5=m
+CONFIG_CRYPTO_CAST6=m
+CONFIG_CRYPTO_TEA=m
+CONFIG_CRYPTO_ARC4=m
+CONFIG_CRYPTO_KHAZAD=m
+CONFIG_CRYPTO_ANUBIS=m
+CONFIG_CRYPTO_DEFLATE=m
+CONFIG_CRYPTO_MICHAEL_MIC=m
+CONFIG_CRYPTO_CRC32C=m
+# CONFIG_CRYPTO_TEST is not set
+
+#
+# Hardware crypto devices
+#
+
+#
+# Library routines
+#
+CONFIG_CRC_CCITT=m
+CONFIG_CRC16=m
+CONFIG_CRC32=y
+CONFIG_LIBCRC32C=m
+CONFIG_ZLIB_INFLATE=m
+CONFIG_ZLIB_DEFLATE=m
+CONFIG_TEXTSEARCH=y
+CONFIG_TEXTSEARCH_KMP=m
+CONFIG_TEXTSEARCH_BM=m
+CONFIG_TEXTSEARCH_FSM=m
+CONFIG_PLIST=y
diff --git a/arch/mips/configs/malta_defconfig b/arch/mips/configs/malta_defconfig
index aeefe2873e38..101e80347dce 100644
--- a/arch/mips/configs/malta_defconfig
+++ b/arch/mips/configs/malta_defconfig
@@ -1,7 +1,7 @@
 #
 # Automatically generated make config: don't edit
-# Linux kernel version: 2.6.18-rc1
-# Thu Jul  6 10:04:13 2006
+# Linux kernel version: 2.6.19-rc1
+# Fri Oct  6 17:34:55 2006
 #
 CONFIG_MIPS=y
 
@@ -25,8 +25,6 @@ CONFIG_MIPS=y
 # CONFIG_MIPS_COBALT is not set
 # CONFIG_MACH_DECSTATION is not set
 # CONFIG_MIPS_EV64120 is not set
-# CONFIG_MIPS_IVR is not set
-# CONFIG_MIPS_ITE8172 is not set
 # CONFIG_MACH_JAZZ is not set
 # CONFIG_LASAT is not set
 # CONFIG_MIPS_ATLAS is not set
@@ -67,6 +65,7 @@ CONFIG_RWSEM_GENERIC_SPINLOCK=y
 CONFIG_GENERIC_FIND_NEXT_BIT=y
 CONFIG_GENERIC_HWEIGHT=y
 CONFIG_GENERIC_CALIBRATE_DELAY=y
+CONFIG_GENERIC_TIME=y
 CONFIG_SCHED_NO_NO_OMIT_FRAME_POINTER=y
 CONFIG_ARCH_MAY_HAVE_PC_FDC=y
 CONFIG_DMA_NONCOHERENT=y
@@ -134,19 +133,19 @@ CONFIG_MIPS_CPU_SCACHE=y
 CONFIG_CPU_HAS_PREFETCH=y
 # CONFIG_MIPS_MT_DISABLED is not set
 # CONFIG_MIPS_MT_SMTC is not set
-# CONFIG_MIPS_MT_SMP is not set
-CONFIG_MIPS_VPE_LOADER=y
+CONFIG_MIPS_MT_SMP=y
+# CONFIG_MIPS_VPE_LOADER is not set
 CONFIG_MIPS_MT=y
 CONFIG_SYS_SUPPORTS_MULTITHREADING=y
 CONFIG_MIPS_MT_FPAFF=y
-CONFIG_MIPS_VPE_LOADER_TOM=y
-CONFIG_MIPS_VPE_APSP_API=y
-CONFIG_MIPS_APSP_KSPD=y
 # CONFIG_64BIT_PHYS_ADDR is not set
 CONFIG_CPU_HAS_LLSC=y
+CONFIG_CPU_MIPSR2_IRQ_VI=y
+CONFIG_CPU_MIPSR2_SRS=y
 CONFIG_CPU_HAS_SYNC=y
 CONFIG_GENERIC_HARDIRQS=y
 CONFIG_GENERIC_IRQ_PROBE=y
+CONFIG_IRQ_PER_CPU=y
 CONFIG_CPU_SUPPORTS_HIGHMEM=y
 CONFIG_ARCH_FLATMEM_ENABLE=y
 CONFIG_SELECT_MEMORY_MODEL=y
@@ -158,6 +157,9 @@ CONFIG_FLAT_NODE_MEM_MAP=y
 # CONFIG_SPARSEMEM_STATIC is not set
 CONFIG_SPLIT_PTLOCK_CPUS=4
 # CONFIG_RESOURCES_64BIT is not set
+CONFIG_SMP=y
+CONFIG_SYS_SUPPORTS_SMP=y
+CONFIG_NR_CPUS=2
 # CONFIG_HZ_48 is not set
 CONFIG_HZ_100=y
 # CONFIG_HZ_128 is not set
@@ -170,6 +172,7 @@ CONFIG_HZ=100
 CONFIG_PREEMPT_NONE=y
 # CONFIG_PREEMPT_VOLUNTARY is not set
 # CONFIG_PREEMPT is not set
+CONFIG_PREEMPT_BKL=y
 CONFIG_LOCKDEP_SUPPORT=y
 CONFIG_STACKTRACE_SUPPORT=y
 CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
@@ -178,7 +181,7 @@ CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
 # Code maturity level options
 #
 CONFIG_EXPERIMENTAL=y
-CONFIG_BROKEN_ON_SMP=y
+CONFIG_LOCK_KERNEL=y
 CONFIG_INIT_ENV_ARG_LIMIT=32
 
 #
@@ -188,15 +191,20 @@ CONFIG_LOCALVERSION=""
 CONFIG_LOCALVERSION_AUTO=y
 CONFIG_SWAP=y
 CONFIG_SYSVIPC=y
+# CONFIG_IPC_NS is not set
 # CONFIG_POSIX_MQUEUE is not set
 # CONFIG_BSD_PROCESS_ACCT is not set
-CONFIG_SYSCTL=y
+# CONFIG_TASKSTATS is not set
+# CONFIG_UTS_NS is not set
 # CONFIG_AUDIT is not set
 # CONFIG_IKCONFIG is not set
+# CONFIG_CPUSETS is not set
 CONFIG_RELAY=y
 CONFIG_INITRAMFS_SOURCE=""
 # CONFIG_CC_OPTIMIZE_FOR_SIZE is not set
+CONFIG_SYSCTL=y
 CONFIG_EMBEDDED=y
+# CONFIG_SYSCTL_SYSCALL is not set
 CONFIG_KALLSYMS=y
 # CONFIG_KALLSYMS_EXTRA_PASS is not set
 CONFIG_HOTPLUG=y
@@ -204,12 +212,12 @@ CONFIG_PRINTK=y
 CONFIG_BUG=y
 CONFIG_ELF_CORE=y
 CONFIG_BASE_FULL=y
-CONFIG_RT_MUTEXES=y
 CONFIG_FUTEX=y
 CONFIG_EPOLL=y
 CONFIG_SHMEM=y
 CONFIG_SLAB=y
 CONFIG_VM_EVENT_COUNTERS=y
+CONFIG_RT_MUTEXES=y
 # CONFIG_TINY_SHMEM is not set
 CONFIG_BASE_SMALL=0
 # CONFIG_SLOB is not set
@@ -223,10 +231,12 @@ CONFIG_MODULE_UNLOAD=y
 CONFIG_MODVERSIONS=y
 CONFIG_MODULE_SRCVERSION_ALL=y
 CONFIG_KMOD=y
+CONFIG_STOP_MACHINE=y
 
 #
 # Block layer
 #
+CONFIG_BLOCK=y
 # CONFIG_LBD is not set
 # CONFIG_BLK_DEV_IO_TRACE is not set
 # CONFIG_LSF is not set
@@ -249,6 +259,7 @@ CONFIG_DEFAULT_IOSCHED="anticipatory"
 #
 CONFIG_HW_HAS_PCI=y
 CONFIG_PCI=y
+# CONFIG_PCI_MULTITHREAD_PROBE is not set
 CONFIG_MMU=y
 
 #
@@ -282,6 +293,7 @@ CONFIG_PACKET_MMAP=y
 CONFIG_UNIX=y
 CONFIG_XFRM=y
 CONFIG_XFRM_USER=m
+# CONFIG_XFRM_SUB_POLICY is not set
 CONFIG_NET_KEY=y
 CONFIG_INET=y
 CONFIG_IP_MULTICAST=y
@@ -313,10 +325,12 @@ CONFIG_INET_XFRM_TUNNEL=m
 CONFIG_INET_TUNNEL=m
 CONFIG_INET_XFRM_MODE_TRANSPORT=m
 CONFIG_INET_XFRM_MODE_TUNNEL=m
+CONFIG_INET_XFRM_MODE_BEET=y
 CONFIG_INET_DIAG=y
 CONFIG_INET_TCP_DIAG=y
 # CONFIG_TCP_CONG_ADVANCED is not set
-CONFIG_TCP_CONG_BIC=y
+CONFIG_TCP_CONG_CUBIC=y
+CONFIG_DEFAULT_TCP_CONG="cubic"
 
 #
 # IP: Virtual Server Configuration
@@ -358,11 +372,16 @@ CONFIG_IPV6_ROUTE_INFO=y
 CONFIG_INET6_AH=m
 CONFIG_INET6_ESP=m
 CONFIG_INET6_IPCOMP=m
+# CONFIG_IPV6_MIP6 is not set
 CONFIG_INET6_XFRM_TUNNEL=m
 CONFIG_INET6_TUNNEL=m
 CONFIG_INET6_XFRM_MODE_TRANSPORT=m
 CONFIG_INET6_XFRM_MODE_TUNNEL=m
+CONFIG_INET6_XFRM_MODE_BEET=m
+# CONFIG_INET6_XFRM_MODE_ROUTEOPTIMIZATION is not set
 CONFIG_IPV6_TUNNEL=m
+# CONFIG_IPV6_SUBTREES is not set
+# CONFIG_IPV6_MULTIPLE_TABLES is not set
 CONFIG_NETWORK_SECMARK=y
 CONFIG_NETFILTER=y
 # CONFIG_NETFILTER_DEBUG is not set
@@ -377,6 +396,7 @@ CONFIG_NETFILTER_NETLINK_LOG=m
 CONFIG_NETFILTER_XTABLES=m
 CONFIG_NETFILTER_XT_TARGET_CLASSIFY=m
 CONFIG_NETFILTER_XT_TARGET_CONNMARK=m
+# CONFIG_NETFILTER_XT_TARGET_DSCP is not set
 CONFIG_NETFILTER_XT_TARGET_MARK=m
 CONFIG_NETFILTER_XT_TARGET_NFQUEUE=m
 CONFIG_NETFILTER_XT_TARGET_NOTRACK=m
@@ -387,6 +407,7 @@ CONFIG_NETFILTER_XT_MATCH_CONNBYTES=m
 CONFIG_NETFILTER_XT_MATCH_CONNMARK=m
 CONFIG_NETFILTER_XT_MATCH_CONNTRACK=m
 CONFIG_NETFILTER_XT_MATCH_DCCP=m
+# CONFIG_NETFILTER_XT_MATCH_DSCP is not set
 CONFIG_NETFILTER_XT_MATCH_ESP=m
 CONFIG_NETFILTER_XT_MATCH_HELPER=m
 CONFIG_NETFILTER_XT_MATCH_LENGTH=m
@@ -429,7 +450,6 @@ CONFIG_IP_NF_MATCH_IPRANGE=m
 CONFIG_IP_NF_MATCH_TOS=m
 CONFIG_IP_NF_MATCH_RECENT=m
 CONFIG_IP_NF_MATCH_ECN=m
-CONFIG_IP_NF_MATCH_DSCP=m
 CONFIG_IP_NF_MATCH_AH=m
 CONFIG_IP_NF_MATCH_TTL=m
 CONFIG_IP_NF_MATCH_OWNER=m
@@ -457,7 +477,6 @@ CONFIG_IP_NF_NAT_SIP=m
 CONFIG_IP_NF_MANGLE=m
 CONFIG_IP_NF_TARGET_TOS=m
 CONFIG_IP_NF_TARGET_ECN=m
-CONFIG_IP_NF_TARGET_DSCP=m
 CONFIG_IP_NF_TARGET_TTL=m
 CONFIG_IP_NF_TARGET_CLUSTERIP=m
 CONFIG_IP_NF_RAW=m
@@ -536,13 +555,12 @@ CONFIG_LLC=m
 # CONFIG_LLC2 is not set
 # CONFIG_IPX is not set
 CONFIG_ATALK=m
-CONFIG_DEV_APPLETALK=y
+CONFIG_DEV_APPLETALK=m
 CONFIG_IPDDP=m
 CONFIG_IPDDP_ENCAP=y
 CONFIG_IPDDP_DECAP=y
 # CONFIG_X25 is not set
 # CONFIG_LAPB is not set
-CONFIG_NET_DIVERT=y
 # CONFIG_ECONET is not set
 # CONFIG_WAN_ROUTER is not set
 
@@ -604,6 +622,7 @@ CONFIG_IEEE80211_CRYPT_CCMP=m
 CONFIG_IEEE80211_SOFTMAC=m
 # CONFIG_IEEE80211_SOFTMAC_DEBUG is not set
 CONFIG_WIRELESS_EXT=y
+CONFIG_FIB_RULES=y
 
 #
 # Device Drivers
@@ -652,6 +671,7 @@ CONFIG_BLK_DEV_NBD=m
 CONFIG_BLK_DEV_RAM=y
 CONFIG_BLK_DEV_RAM_COUNT=16
 CONFIG_BLK_DEV_RAM_SIZE=4096
+CONFIG_BLK_DEV_RAM_BLOCKSIZE=1024
 # CONFIG_BLK_DEV_INITRD is not set
 CONFIG_CDROM_PKTCDVD=m
 CONFIG_CDROM_PKTCDVD_BUFFERS=8
@@ -662,6 +682,7 @@ CONFIG_ATA_OVER_ETH=m
 # ATA/ATAPI/MFM/RLL support
 #
 CONFIG_IDE=y
+CONFIG_IDE_MAX_HWIFS=4
 CONFIG_BLK_DEV_IDE=y
 
 #
@@ -699,6 +720,7 @@ CONFIG_IDEDMA_PCI_AUTO=y
 # CONFIG_BLK_DEV_CS5530 is not set
 # CONFIG_BLK_DEV_HPT34X is not set
 # CONFIG_BLK_DEV_HPT366 is not set
+# CONFIG_BLK_DEV_JMICRON is not set
 # CONFIG_BLK_DEV_SC1200 is not set
 CONFIG_BLK_DEV_PIIX=y
 # CONFIG_BLK_DEV_IT821X is not set
@@ -721,6 +743,7 @@ CONFIG_IDEDMA_AUTO=y
 #
 CONFIG_RAID_ATTRS=m
 CONFIG_SCSI=m
+CONFIG_SCSI_NETLINK=y
 CONFIG_SCSI_PROC_FS=y
 
 #
@@ -742,12 +765,13 @@ CONFIG_SCSI_CONSTANTS=y
 CONFIG_SCSI_LOGGING=y
 
 #
-# SCSI Transport Attributes
+# SCSI Transports
 #
 CONFIG_SCSI_SPI_ATTRS=m
 CONFIG_SCSI_FC_ATTRS=m
 CONFIG_SCSI_ISCSI_ATTRS=m
 CONFIG_SCSI_SAS_ATTRS=m
+# CONFIG_SCSI_SAS_LIBSAS is not set
 
 #
 # SCSI low-level drivers
@@ -765,21 +789,23 @@ CONFIG_AIC7XXX_DEBUG_MASK=0
 CONFIG_AIC7XXX_REG_PRETTY_PRINT=y
 # CONFIG_SCSI_AIC7XXX_OLD is not set
 # CONFIG_SCSI_AIC79XX is not set
+# CONFIG_SCSI_AIC94XX is not set
 # CONFIG_SCSI_DPT_I2O is not set
+# CONFIG_SCSI_ARCMSR is not set
 # CONFIG_MEGARAID_NEWGEN is not set
 # CONFIG_MEGARAID_LEGACY is not set
 # CONFIG_MEGARAID_SAS is not set
-# CONFIG_SCSI_SATA is not set
 # CONFIG_SCSI_HPTIOP is not set
 # CONFIG_SCSI_DMX3191D is not set
 # CONFIG_SCSI_FUTURE_DOMAIN is not set
 # CONFIG_SCSI_IPS is not set
 # CONFIG_SCSI_INITIO is not set
 # CONFIG_SCSI_INIA100 is not set
+# CONFIG_SCSI_STEX is not set
 # CONFIG_SCSI_SYM53C8XX_2 is not set
-# CONFIG_SCSI_IPR is not set
 # CONFIG_SCSI_QLOGIC_1280 is not set
 # CONFIG_SCSI_QLA_FC is not set
+# CONFIG_SCSI_QLA_ISCSI is not set
 # CONFIG_SCSI_LPFC is not set
 # CONFIG_SCSI_DC395x is not set
 # CONFIG_SCSI_DC390T is not set
@@ -787,6 +813,11 @@ CONFIG_AIC7XXX_REG_PRETTY_PRINT=y
 # CONFIG_SCSI_DEBUG is not set
 
 #
+# Serial ATA (prod) and Parallel ATA (experimental) drivers
+#
+# CONFIG_ATA is not set
+
+#
 # Multi-device support (RAID and LVM)
 #
 CONFIG_MD=y
@@ -800,6 +831,7 @@ CONFIG_MD_RAID5_RESHAPE=y
 CONFIG_MD_MULTIPATH=m
 CONFIG_MD_FAULTY=m
 CONFIG_BLK_DEV_DM=m
+# CONFIG_DM_DEBUG is not set
 CONFIG_DM_CRYPT=m
 CONFIG_DM_SNAPSHOT=m
 CONFIG_DM_MIRROR=m
@@ -854,6 +886,7 @@ CONFIG_LXT_PHY=m
 CONFIG_CICADA_PHY=m
 CONFIG_VITESSE_PHY=m
 CONFIG_SMSC_PHY=m
+# CONFIG_FIXED_PHY is not set
 
 #
 # Ethernet (10 or 100Mbit)
@@ -873,6 +906,7 @@ CONFIG_MII=y
 # CONFIG_HP100 is not set
 CONFIG_NET_PCI=y
 CONFIG_PCNET32=y
+# CONFIG_PCNET32_NAPI is not set
 # CONFIG_AMD8111_ETH is not set
 # CONFIG_ADAPTEC_STARFIRE is not set
 # CONFIG_B44 is not set
@@ -909,6 +943,7 @@ CONFIG_PCNET32=y
 # CONFIG_VIA_VELOCITY is not set
 # CONFIG_TIGON3 is not set
 # CONFIG_BNX2 is not set
+# CONFIG_QLA3XXX is not set
 
 #
 # Ethernet (10000 Mbit)
@@ -956,6 +991,7 @@ CONFIG_PCNET32=y
 # Input device support
 #
 CONFIG_INPUT=y
+# CONFIG_INPUT_FF_MEMLESS is not set
 
 #
 # Userland interfaces
@@ -1070,12 +1106,12 @@ CONFIG_RTC=y
 #
 # Misc devices
 #
+# CONFIG_TIFM_CORE is not set
 
 #
 # Multimedia devices
 #
 # CONFIG_VIDEO_DEV is not set
-CONFIG_VIDEO_V4L2=y
 
 #
 # Digital Video Broadcasting Devices
@@ -1093,6 +1129,7 @@ CONFIG_VIDEO_V4L2=y
 #
 # CONFIG_VGA_CONSOLE is not set
 CONFIG_DUMMY_CONSOLE=y
+# CONFIG_BACKLIGHT_LCD_SUPPORT is not set
 
 #
 # Sound
@@ -1191,6 +1228,7 @@ CONFIG_XFS_QUOTA=y
 CONFIG_XFS_SECURITY=y
 CONFIG_XFS_POSIX_ACL=y
 # CONFIG_XFS_RT is not set
+# CONFIG_GFS2_FS is not set
 # CONFIG_OCFS2_FS is not set
 CONFIG_MINIX_FS=m
 CONFIG_ROMFS_FS=m
@@ -1230,8 +1268,10 @@ CONFIG_FAT_DEFAULT_IOCHARSET="iso8859-1"
 #
 CONFIG_PROC_FS=y
 CONFIG_PROC_KCORE=y
+CONFIG_PROC_SYSCTL=y
 CONFIG_SYSFS=y
 CONFIG_TMPFS=y
+# CONFIG_TMPFS_POSIX_ACL is not set
 # CONFIG_HUGETLB_PAGE is not set
 CONFIG_RAMFS=y
 # CONFIG_CONFIGFS_FS is not set
@@ -1279,7 +1319,6 @@ CONFIG_SUNRPC=y
 # CONFIG_RPCSEC_GSS_SPKM3 is not set
 # CONFIG_SMB_FS is not set
 # CONFIG_CIFS is not set
-# CONFIG_CIFS_DEBUG2 is not set
 # CONFIG_NCP_FS is not set
 # CONFIG_CODA_FS is not set
 # CONFIG_AFS_FS is not set
@@ -1336,6 +1375,11 @@ CONFIG_NLS_KOI8_U=m
 CONFIG_NLS_UTF8=m
 
 #
+# Distributed Lock Manager
+#
+# CONFIG_DLM is not set
+
+#
 # Profiling support
 #
 # CONFIG_PROFILING is not set
@@ -1345,10 +1389,11 @@ CONFIG_NLS_UTF8=m
 #
 CONFIG_TRACE_IRQFLAGS_SUPPORT=y
 # CONFIG_PRINTK_TIME is not set
+CONFIG_ENABLE_MUST_CHECK=y
 # CONFIG_MAGIC_SYSRQ is not set
 # CONFIG_UNUSED_SYMBOLS is not set
 # CONFIG_DEBUG_KERNEL is not set
-CONFIG_LOG_BUF_SHIFT=14
+CONFIG_LOG_BUF_SHIFT=15
 # CONFIG_DEBUG_FS is not set
 CONFIG_CROSSCOMPILE=y
 CONFIG_CMDLINE=""
@@ -1363,6 +1408,10 @@ CONFIG_CMDLINE=""
 # Cryptographic options
 #
 CONFIG_CRYPTO=y
+CONFIG_CRYPTO_ALGAPI=y
+CONFIG_CRYPTO_BLKCIPHER=m
+CONFIG_CRYPTO_HASH=y
+CONFIG_CRYPTO_MANAGER=m
 CONFIG_CRYPTO_HMAC=y
 CONFIG_CRYPTO_NULL=m
 CONFIG_CRYPTO_MD4=m
@@ -1372,9 +1421,12 @@ CONFIG_CRYPTO_SHA256=m
 CONFIG_CRYPTO_SHA512=m
 CONFIG_CRYPTO_WP512=m
 CONFIG_CRYPTO_TGR192=m
+CONFIG_CRYPTO_ECB=m
+CONFIG_CRYPTO_CBC=m
 CONFIG_CRYPTO_DES=m
 CONFIG_CRYPTO_BLOWFISH=m
 CONFIG_CRYPTO_TWOFISH=m
+CONFIG_CRYPTO_TWOFISH_COMMON=m
 CONFIG_CRYPTO_SERPENT=m
 CONFIG_CRYPTO_AES=m
 CONFIG_CRYPTO_CAST5=m
diff --git a/arch/mips/configs/pb1100_defconfig b/arch/mips/configs/pb1100_defconfig
index 741f8258075c..9e672f63a0aa 100644
--- a/arch/mips/configs/pb1100_defconfig
+++ b/arch/mips/configs/pb1100_defconfig
@@ -76,7 +76,6 @@ CONFIG_SYS_SUPPORTS_LITTLE_ENDIAN=y
 CONFIG_SOC_AU1100=y
 CONFIG_SOC_AU1X00=y
 CONFIG_SWAP_IO_SPACE=y
-# CONFIG_AU1X00_USB_DEVICE is not set
 CONFIG_MIPS_L1_CACHE_SHIFT=5
 
 #
diff --git a/arch/mips/configs/pb1500_defconfig b/arch/mips/configs/pb1500_defconfig
index 8576340714da..d0c0f4af1bff 100644
--- a/arch/mips/configs/pb1500_defconfig
+++ b/arch/mips/configs/pb1500_defconfig
@@ -75,7 +75,6 @@ CONFIG_CPU_LITTLE_ENDIAN=y
 CONFIG_SYS_SUPPORTS_LITTLE_ENDIAN=y
 CONFIG_SOC_AU1500=y
 CONFIG_SOC_AU1X00=y
-# CONFIG_AU1X00_USB_DEVICE is not set
 CONFIG_MIPS_L1_CACHE_SHIFT=5
 
 #
diff --git a/arch/mips/ddb5xxx/ddb5477/irq.c b/arch/mips/ddb5xxx/ddb5477/irq.c
index 513fc6722d84..a8bd2e66705c 100644
--- a/arch/mips/ddb5xxx/ddb5477/irq.c
+++ b/arch/mips/ddb5xxx/ddb5477/irq.c
@@ -153,8 +153,7 @@ u8 i8259_interrupt_ack(void)
  * the first level int-handler will jump here if it is a vrc5477 irq
  */
 #define NUM_5477_IRQS   32
-static void
-vrc5477_irq_dispatch(struct pt_regs *regs)
+static void vrc5477_irq_dispatch(void)
 {
         u32 intStatus;
         u32 bitmask;
@@ -178,7 +177,7 @@ vrc5477_irq_dispatch(struct pt_regs *regs)
                 /* check for i8259 interrupts */
                 if (intStatus & (1 << VRC5477_I8259_CASCADE)) {
                         int i8259_irq = i8259_interrupt_ack();
-                        do_IRQ(I8259_IRQ_BASE + i8259_irq, regs);
+                        do_IRQ(I8259_IRQ_BASE + i8259_irq);
                         return;
                 }
         }
@@ -186,7 +185,7 @@ vrc5477_irq_dispatch(struct pt_regs *regs)
         for (i=0, bitmask=1; i<= NUM_5477_IRQS; bitmask <<=1, i++) {
                 /* do we need to "and" with the int mask? */
                 if (intStatus & bitmask) {
-                        do_IRQ(VRC5477_IRQ_BASE + i, regs);
+                        do_IRQ(VRC5477_IRQ_BASE + i);
                         return;
                 }
         }
@@ -194,18 +193,18 @@ vrc5477_irq_dispatch(struct pt_regs *regs)
 
 #define VR5477INTS (STATUSF_IP2|STATUSF_IP3|STATUSF_IP4|STATUSF_IP5|STATUSF_IP6)
 
-asmlinkage void plat_irq_dispatch(struct pt_regs *regs)
+asmlinkage void plat_irq_dispatch(void)
 {
         unsigned int pending = read_c0_cause() & read_c0_status();
 
         if (pending & STATUSF_IP7)
-                do_IRQ(CPU_IRQ_BASE + 7, regs);
+                do_IRQ(CPU_IRQ_BASE + 7);
         else if (pending & VR5477INTS)
-                vrc5477_irq_dispatch(regs);
+                vrc5477_irq_dispatch();
         else if (pending & STATUSF_IP0)
-                do_IRQ(CPU_IRQ_BASE, regs);
+                do_IRQ(CPU_IRQ_BASE);
         else if (pending & STATUSF_IP1)
-                do_IRQ(CPU_IRQ_BASE + 1, regs);
+                do_IRQ(CPU_IRQ_BASE + 1);
         else
-                spurious_interrupt(regs);
+                spurious_interrupt();
 }
diff --git a/arch/mips/dec/ecc-berr.c b/arch/mips/dec/ecc-berr.c
index cc24c5ed0c05..3e374d05978f 100644
--- a/arch/mips/dec/ecc-berr.c
+++ b/arch/mips/dec/ecc-berr.c
@@ -24,6 +24,7 @@
 #include <asm/addrspace.h>
 #include <asm/bootinfo.h>
 #include <asm/cpu.h>
+#include <asm/irq_regs.h>
 #include <asm/processor.h>
 #include <asm/system.h>
 #include <asm/traps.h>
@@ -200,8 +201,10 @@ int dec_ecc_be_handler(struct pt_regs *regs, int is_fixup)
         return dec_ecc_be_backend(regs, is_fixup, 0);
 }
 
-irqreturn_t dec_ecc_be_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+irqreturn_t dec_ecc_be_interrupt(int irq, void *dev_id)
 {
+        struct pt_regs *regs = get_irq_regs();
+
         int action = dec_ecc_be_backend(regs, 0, 1);
 
         if (action == MIPS_BE_DISCARD)
diff --git a/arch/mips/dec/int-handler.S b/arch/mips/dec/int-handler.S
index 455a65b91cb0..31dd47d1002d 100644
--- a/arch/mips/dec/int-handler.S
+++ b/arch/mips/dec/int-handler.S
@@ -264,10 +264,10 @@
                  srlv   t3,t1,t2
 
 handle_it:
-                jal     do_IRQ
-                 move   a1,sp
-
-                j       ret_from_irq
+                LONG_L  s0, TI_REGS($28)
+                LONG_S  sp, TI_REGS($28)
+                PTR_LA  ra, ret_from_irq
+                j       do_IRQ
                  nop
 
 #ifdef CONFIG_32BIT
@@ -277,9 +277,8 @@ fpu:
 #endif
 
 spurious:
-                jal     spurious_interrupt
-                 nop
-                j       ret_from_irq
+                PTR_LA  ra, _ret_from_irq
+                j       spurious_interrupt
                  nop
                 END(plat_irq_dispatch)
 
diff --git a/arch/mips/dec/kn01-berr.c b/arch/mips/dec/kn01-berr.c
index b9271db9bc76..f19b4617a0a6 100644
--- a/arch/mips/dec/kn01-berr.c
+++ b/arch/mips/dec/kn01-berr.c
@@ -150,10 +150,10 @@ int dec_kn01_be_handler(struct pt_regs *regs, int is_fixup)
         return dec_kn01_be_backend(regs, is_fixup, 0);
 }
 
-irqreturn_t dec_kn01_be_interrupt(int irq, void *dev_id,
-                                    struct pt_regs *regs)
+irqreturn_t dec_kn01_be_interrupt(int irq, void *dev_id)
 {
         volatile u16 *csr = (void *)CKSEG1ADDR(KN01_SLOT_BASE + KN01_CSR);
+        struct pt_regs *regs = get_irq_regs();
         int action;
 
         if (!(*csr & KN01_CSR_MEMERR))
diff --git a/arch/mips/dec/kn02xa-berr.c b/arch/mips/dec/kn02xa-berr.c
index 6cd3f94f79fe..7a053aadcd3a 100644
--- a/arch/mips/dec/kn02xa-berr.c
+++ b/arch/mips/dec/kn02xa-berr.c
@@ -21,6 +21,8 @@
 #include <linux/types.h>
 
 #include <asm/addrspace.h>
+#include <asm/irq_regs.h>
+#include <asm/ptrace.h>
 #include <asm/system.h>
 #include <asm/traps.h>
 
@@ -104,9 +106,9 @@ int dec_kn02xa_be_handler(struct pt_regs *regs, int is_fixup)
         return dec_kn02xa_be_backend(regs, is_fixup, 0);
 }
 
-irqreturn_t dec_kn02xa_be_interrupt(int irq, void *dev_id,
-                                    struct pt_regs *regs)
+irqreturn_t dec_kn02xa_be_interrupt(int irq, void *dev_id)
 {
+        struct pt_regs *regs = get_irq_regs();
         int action = dec_kn02xa_be_backend(regs, 0, 1);
 
         if (action == MIPS_BE_DISCARD)
diff --git a/arch/mips/dec/reset.c b/arch/mips/dec/reset.c
index f78c6da47921..56397227adb0 100644
--- a/arch/mips/dec/reset.c
+++ b/arch/mips/dec/reset.c
@@ -8,7 +8,6 @@
 #include <linux/linkage.h>
 
 #include <asm/addrspace.h>
-#include <asm/ptrace.h>
 
 typedef void ATTRIB_NORET (* noret_func_t)(void);
 
@@ -35,7 +34,7 @@ void ATTRIB_NORET dec_machine_power_off(void)
         back_to_prom();
 }
 
-irqreturn_t dec_intr_halt(int irq, void *dev_id, struct pt_regs *regs)
+irqreturn_t dec_intr_halt(int irq, void *dev_id)
 {
         dec_machine_halt();
 }
diff --git a/arch/mips/dec/setup.c b/arch/mips/dec/setup.c
index d43241c2f541..6b7481e97bec 100644
--- a/arch/mips/dec/setup.c
+++ b/arch/mips/dec/setup.c
@@ -46,7 +46,7 @@
 extern void dec_machine_restart(char *command);
 extern void dec_machine_halt(void);
 extern void dec_machine_power_off(void);
-extern irqreturn_t dec_intr_halt(int irq, void *dev_id, struct pt_regs *regs);
+extern irqreturn_t dec_intr_halt(int irq, void *dev_id);
 
 unsigned long dec_kn_slot_base, dec_kn_slot_size;
 
diff --git a/arch/mips/emma2rh/common/irq.c b/arch/mips/emma2rh/common/irq.c
index 3af57693c84c..c191b3e9d9d9 100644
--- a/arch/mips/emma2rh/common/irq.c
+++ b/arch/mips/emma2rh/common/irq.c
@@ -39,7 +39,7 @@
 /*
  * the first level int-handler will jump here if it is a emma2rh irq
  */
-asmlinkage void emma2rh_irq_dispatch(struct pt_regs *regs)
+void emma2rh_irq_dispatch(void)
 {
         u32 intStatus;
         u32 bitmask;
@@ -56,7 +56,7 @@ asmlinkage void emma2rh_irq_dispatch(struct pt_regs *regs)
                     & emma2rh_in32(EMMA2RH_BHIF_SW_INT_EN);
                 for (i = 0, bitmask = 1; i < 32; i++, bitmask <<= 1) {
                         if (swIntStatus & bitmask) {
-                                do_IRQ(EMMA2RH_SW_IRQ_BASE + i, regs);
+                                do_IRQ(EMMA2RH_SW_IRQ_BASE + i);
                                 return;
                         }
                 }
@@ -65,7 +65,7 @@ asmlinkage void emma2rh_irq_dispatch(struct pt_regs *regs)
 
         for (i = 0, bitmask = 1; i < 32; i++, bitmask <<= 1) {
                 if (intStatus & bitmask) {
-                        do_IRQ(EMMA2RH_IRQ_BASE + i, regs);
+                        do_IRQ(EMMA2RH_IRQ_BASE + i);
                         return;
                 }
         }
@@ -81,7 +81,7 @@ asmlinkage void emma2rh_irq_dispatch(struct pt_regs *regs)
                     & emma2rh_in32(EMMA2RH_GPIO_INT_MASK);
                 for (i = 0, bitmask = 1; i < 32; i++, bitmask <<= 1) {
                         if (gpioIntStatus & bitmask) {
-                                do_IRQ(EMMA2RH_GPIO_IRQ_BASE + i, regs);
+                                do_IRQ(EMMA2RH_GPIO_IRQ_BASE + i);
                                 return;
                         }
                 }
@@ -90,7 +90,7 @@ asmlinkage void emma2rh_irq_dispatch(struct pt_regs *regs)
 
         for (i = 32, bitmask = 1; i < 64; i++, bitmask <<= 1) {
                 if (intStatus & bitmask) {
-                        do_IRQ(EMMA2RH_IRQ_BASE + i, regs);
+                        do_IRQ(EMMA2RH_IRQ_BASE + i);
                         return;
                 }
         }
@@ -100,7 +100,7 @@ asmlinkage void emma2rh_irq_dispatch(struct pt_regs *regs)
 
         for (i = 64, bitmask = 1; i < 96; i++, bitmask <<= 1) {
                 if (intStatus & bitmask) {
-                        do_IRQ(EMMA2RH_IRQ_BASE + i, regs);
+                        do_IRQ(EMMA2RH_IRQ_BASE + i);
                         return;
                 }
         }
diff --git a/arch/mips/emma2rh/markeins/irq.c b/arch/mips/emma2rh/markeins/irq.c
index 2a736be42c8c..c93369cb4115 100644
--- a/arch/mips/emma2rh/markeins/irq.c
+++ b/arch/mips/emma2rh/markeins/irq.c
@@ -57,7 +57,7 @@
 extern void emma2rh_sw_irq_init(u32 base);
 extern void emma2rh_gpio_irq_init(u32 base);
 extern void emma2rh_irq_init(u32 base);
-extern asmlinkage void emma2rh_irq_dispatch(struct pt_regs *regs);
+extern void emma2rh_irq_dispatch(void);
 
 static struct irqaction irq_cascade = {
            .handler = no_action,
@@ -114,20 +114,20 @@ void __init arch_init_irq(void)
         setup_irq(CPU_IRQ_BASE + CPU_EMMA2RH_CASCADE, &irq_cascade);
 }
 
-asmlinkage void plat_irq_dispatch(struct pt_regs *regs)
+asmlinkage void plat_irq_dispatch(void)
 {
         unsigned int pending = read_c0_status() & read_c0_cause();
 
         if (pending & STATUSF_IP7)
-                do_IRQ(CPU_IRQ_BASE + 7, regs);
+                do_IRQ(CPU_IRQ_BASE + 7);
         else if (pending & STATUSF_IP2)
-                emma2rh_irq_dispatch(regs);
+                emma2rh_irq_dispatch();
         else if (pending & STATUSF_IP1)
-                do_IRQ(CPU_IRQ_BASE + 1, regs);
+                do_IRQ(CPU_IRQ_BASE + 1);
         else if (pending & STATUSF_IP0)
-                do_IRQ(CPU_IRQ_BASE + 0, regs);
+                do_IRQ(CPU_IRQ_BASE + 0);
         else
-                spurious_interrupt(regs);
+                spurious_interrupt();
 }
 
 
diff --git a/arch/mips/gt64120/common/time.c b/arch/mips/gt64120/common/time.c
index 7feca49350d1..c83ae6acd601 100644
--- a/arch/mips/gt64120/common/time.c
+++ b/arch/mips/gt64120/common/time.c
@@ -10,7 +10,7 @@
 #include <linux/kernel.h>
 #include <linux/sched.h>
 #include <linux/kernel_stat.h>
-#include <asm/ptrace.h>
+#include <asm/irq_regs.h>
 #include <asm/gt64120.h>
 
 /*
@@ -19,7 +19,7 @@
  * differently than other MIPS interrupts.
  */
 
-static void gt64120_irq(int irq, void *dev_id, struct pt_regs *regs)
+static irqreturn_t gt64120_irq(int irq, void *dev_id)
 {
         unsigned int irq_src, int_high_src, irq_src_mask, int_high_src_mask;
         int handled = 0;
@@ -36,12 +36,14 @@ static void gt64120_irq(int irq, void *dev_id, struct pt_regs *regs)
                 irq_src &= ~0x00000800;
                 do_timer(1);
 #ifndef CONFIG_SMP
-                update_process_times(user_mode(regs));
+                update_process_times(user_mode(get_irq_regs()));
 #endif
         }
 
         GT_WRITE(GT_INTRCAUSE_OFS, 0);
         GT_WRITE(GT_HINTRCAUSE_OFS, 0);
+
+        return IRQ_HANDLED;
 }
 
 /*
diff --git a/arch/mips/gt64120/ev64120/irq.c b/arch/mips/gt64120/ev64120/irq.c
index 5d939ac58f3f..ed4d82b9a24a 100644
--- a/arch/mips/gt64120/ev64120/irq.c
+++ b/arch/mips/gt64120/ev64120/irq.c
@@ -46,22 +46,22 @@
 #include <asm/system.h>
 #include <asm/gt64120.h>
 
-asmlinkage void plat_irq_dispatch(struct pt_regs *regs)
+asmlinkage void plat_irq_dispatch(void)
 {
         unsigned int pending = read_c0_status() & read_c0_cause();
 
         if (pending & STATUSF_IP4)              /* int2 hardware line (timer) */
-                do_IRQ(4, regs);
+                do_IRQ(4);
         else if (pending & STATUSF_IP2)         /* int0 hardware line */
-                do_IRQ(GT_INTA, regs);
+                do_IRQ(GT_INTA);
         else if (pending & STATUSF_IP5)         /* int3 hardware line */
-                do_IRQ(GT_INTD, regs);
+                do_IRQ(GT_INTD);
         else if (pending & STATUSF_IP6)         /* int4 hardware line */
-                do_IRQ(6, regs);
+                do_IRQ(6);
         else if (pending & STATUSF_IP7)         /* compare int */
-                do_IRQ(7, regs);
+                do_IRQ(7);
         else
-                spurious_interrupt(regs);
+                spurious_interrupt();
 }
 
 static void disable_ev64120_irq(unsigned int irq_nr)
diff --git a/arch/mips/gt64120/ev64120/setup.c b/arch/mips/gt64120/ev64120/setup.c
index 4236da31ecc6..91c2d3f41617 100644
--- a/arch/mips/gt64120/ev64120/setup.c
+++ b/arch/mips/gt64120/ev64120/setup.c
@@ -42,7 +42,6 @@
 #include <asm/irq.h>
 #include <asm/pci.h>
 #include <asm/processor.h>
-#include <asm/ptrace.h>
 #include <asm/time.h>
 #include <asm/reboot.h>
 #include <asm/traps.h>
diff --git a/arch/mips/gt64120/momenco_ocelot/irq.c b/arch/mips/gt64120/momenco_ocelot/irq.c
index 885f67f32ea3..d9294401ccb0 100644
--- a/arch/mips/gt64120/momenco_ocelot/irq.c
+++ b/arch/mips/gt64120/momenco_ocelot/irq.c
@@ -48,22 +48,22 @@
 #include <asm/mipsregs.h>
 #include <asm/system.h>
 
-asmlinkage void plat_irq_dispatch(struct pt_regs *regs)
+asmlinkage void plat_irq_dispatch(void)
 {
         unsigned int pending = read_c0_status() & read_c0_cause();
 
         if (pending & STATUSF_IP2)              /* int0 hardware line */
-                do_IRQ(2, regs);
+                do_IRQ(2);
         else if (pending & STATUSF_IP3)         /* int1 hardware line */
-                do_IRQ(3, regs);
+                do_IRQ(3);
         else if (pending & STATUSF_IP4)         /* int2 hardware line */
-                do_IRQ(4, regs);
+                do_IRQ(4);
         else if (pending & STATUSF_IP5)         /* int3 hardware line */
-                do_IRQ(5, regs);
+                do_IRQ(5);
         else if (pending & STATUSF_IP6)         /* int4 hardware line */
-                do_IRQ(6, regs);
+                do_IRQ(6);
         else if (pending & STATUSF_IP7)         /* cpu timer */
-                do_IRQ(7, regs);
+                do_IRQ(7);
         else {
                 /*
                  * Now look at the extended interrupts
@@ -71,13 +71,13 @@ asmlinkage void plat_irq_dispatch(struct pt_regs *regs)
                 pending = (read_c0_cause() & (read_c0_intcontrol() << 8)) >> 16;
 
                 if (pending & STATUSF_IP8)              /* int6 hardware line */
-                        do_IRQ(8, regs);
+                        do_IRQ(8);
                 else if (pending & STATUSF_IP9)         /* int7 hardware line */
-                        do_IRQ(9, regs);
+                        do_IRQ(9);
                 else if (pending & STATUSF_IP10)        /* int8 hardware line */
-                        do_IRQ(10, regs);
+                        do_IRQ(10);
                 else if (pending & STATUSF_IP11)        /* int9 hardware line */
-                        do_IRQ(11, regs);
+                        do_IRQ(11);
         }
 }
 
diff --git a/arch/mips/gt64120/momenco_ocelot/setup.c b/arch/mips/gt64120/momenco_ocelot/setup.c
index 9804642ecf89..0e5bbee2d5b7 100644
--- a/arch/mips/gt64120/momenco_ocelot/setup.c
+++ b/arch/mips/gt64120/momenco_ocelot/setup.c
@@ -56,7 +56,6 @@
 #include <asm/irq.h>
 #include <asm/pci.h>
 #include <asm/processor.h>
-#include <asm/ptrace.h>
 #include <asm/reboot.h>
 #include <asm/traps.h>
 #include <linux/bootmem.h>
diff --git a/arch/mips/gt64120/wrppmc/irq.c b/arch/mips/gt64120/wrppmc/irq.c
index 8d75a43ce877..eedfc24e1eae 100644
--- a/arch/mips/gt64120/wrppmc/irq.c
+++ b/arch/mips/gt64120/wrppmc/irq.c
@@ -30,18 +30,18 @@
 #include <asm/irq_cpu.h>
 #include <asm/gt64120.h>
 
-asmlinkage void plat_irq_dispatch(struct pt_regs *regs)
+asmlinkage void plat_irq_dispatch(void)
 {
         unsigned int pending = read_c0_status() & read_c0_cause();
 
         if (pending & STATUSF_IP7)
-                do_IRQ(WRPPMC_MIPS_TIMER_IRQ, regs);    /* CPU Compare/Count internal timer */
+                do_IRQ(WRPPMC_MIPS_TIMER_IRQ);  /* CPU Compare/Count internal timer */
         else if (pending & STATUSF_IP6)
-                do_IRQ(WRPPMC_UART16550_IRQ, regs);     /* UART 16550 port */
+                do_IRQ(WRPPMC_UART16550_IRQ);   /* UART 16550 port */
         else if (pending & STATUSF_IP3)
-                do_IRQ(WRPPMC_PCI_INTA_IRQ, regs);      /* PCI INT_A */
+                do_IRQ(WRPPMC_PCI_INTA_IRQ);    /* PCI INT_A */
         else
-                spurious_interrupt(regs);
+                spurious_interrupt();
 }
 
 /**
diff --git a/arch/mips/jazz/irq.c b/arch/mips/jazz/irq.c
index eef05093deb4..d5bd6b3a0933 100644
--- a/arch/mips/jazz/irq.c
+++ b/arch/mips/jazz/irq.c
@@ -94,26 +94,26 @@ void __init arch_init_irq(void)
         change_c0_status(ST0_IM, IE_IRQ4 | IE_IRQ3 | IE_IRQ2 | IE_IRQ1);
 }
 
-static void loc_call(unsigned int irq, struct pt_regs *regs, unsigned int mask)
+static void loc_call(unsigned int irq, unsigned int mask)
 {
         r4030_write_reg16(JAZZ_IO_IRQ_ENABLE,
                           r4030_read_reg16(JAZZ_IO_IRQ_ENABLE) & mask);
-        do_IRQ(irq, regs);
+        do_IRQ(irq);
         r4030_write_reg16(JAZZ_IO_IRQ_ENABLE,
                           r4030_read_reg16(JAZZ_IO_IRQ_ENABLE) | mask);
 }
 
-static void ll_local_dev(struct pt_regs *regs)
+static void ll_local_dev(void)
 {
         switch (r4030_read_reg32(JAZZ_IO_IRQ_SOURCE)) {
         case 0:
                 panic("Unimplemented loc_no_irq handler");
                 break;
         case 4:
-                loc_call(JAZZ_PARALLEL_IRQ, regs, JAZZ_IE_PARALLEL);
+                loc_call(JAZZ_PARALLEL_IRQ, JAZZ_IE_PARALLEL);
                 break;
         case 8:
-                loc_call(JAZZ_PARALLEL_IRQ, regs, JAZZ_IE_FLOPPY);
+                loc_call(JAZZ_PARALLEL_IRQ, JAZZ_IE_FLOPPY);
                 break;
         case 12:
                 panic("Unimplemented loc_sound handler");
@@ -122,27 +122,27 @@ static void ll_local_dev(struct pt_regs *regs)
                 panic("Unimplemented loc_video handler");
                 break;
         case 20:
-                loc_call(JAZZ_ETHERNET_IRQ, regs, JAZZ_IE_ETHERNET);
+                loc_call(JAZZ_ETHERNET_IRQ, JAZZ_IE_ETHERNET);
                 break;
         case 24:
-                loc_call(JAZZ_SCSI_IRQ, regs, JAZZ_IE_SCSI);
+                loc_call(JAZZ_SCSI_IRQ, JAZZ_IE_SCSI);
                 break;
         case 28:
-                loc_call(JAZZ_KEYBOARD_IRQ, regs, JAZZ_IE_KEYBOARD);
+                loc_call(JAZZ_KEYBOARD_IRQ, JAZZ_IE_KEYBOARD);
                 break;
         case 32:
-                loc_call(JAZZ_MOUSE_IRQ, regs, JAZZ_IE_MOUSE);
+                loc_call(JAZZ_MOUSE_IRQ, JAZZ_IE_MOUSE);
                 break;
         case 36:
-                loc_call(JAZZ_SERIAL1_IRQ, regs, JAZZ_IE_SERIAL1);
+                loc_call(JAZZ_SERIAL1_IRQ, JAZZ_IE_SERIAL1);
                 break;
         case 40:
-                loc_call(JAZZ_SERIAL2_IRQ, regs, JAZZ_IE_SERIAL2);
+                loc_call(JAZZ_SERIAL2_IRQ, JAZZ_IE_SERIAL2);
                 break;
         }
 }
 
-asmlinkage void plat_irq_dispatch(struct pt_regs *regs)
+asmlinkage void plat_irq_dispatch(void)
 {
         unsigned int pending = read_c0_cause() & read_c0_status() & ST0_IM;
 
@@ -150,13 +150,13 @@ asmlinkage void plat_irq_dispatch(struct pt_regs *regs)
                 write_c0_compare(0);
         else if (pending & IE_IRQ4) {
                 r4030_read_reg32(JAZZ_TIMER_REGISTER);
-                do_IRQ(JAZZ_TIMER_IRQ, regs);
+                do_IRQ(JAZZ_TIMER_IRQ);
         } else if (pending & IE_IRQ3)
                 panic("Unimplemented ISA NMI handler");
         else if (pending & IE_IRQ2)
-                do_IRQ(r4030_read_reg32(JAZZ_EISA_IRQ_ACK), regs);
+                do_IRQ(r4030_read_reg32(JAZZ_EISA_IRQ_ACK));
         else if (pending & IE_IRQ1) {
-                ll_local_dev(regs);
+                ll_local_dev();
         } else if (unlikely(pending & IE_IRQ0))
                 panic("Unimplemented local_dma handler");
         else if (pending & IE_SW1) {
diff --git a/arch/mips/jazz/setup.c b/arch/mips/jazz/setup.c
index 487a9ea1ef00..6dc4135d6e11 100644
--- a/arch/mips/jazz/setup.c
+++ b/arch/mips/jazz/setup.c
@@ -19,12 +19,12 @@
 #include <linux/fb.h>
 #include <linux/ide.h>
 #include <linux/pm.h>
+#include <linux/screen_info.h>
 
 #include <asm/bootinfo.h>
 #include <asm/irq.h>
 #include <asm/jazz.h>
 #include <asm/jazzdma.h>
-#include <asm/ptrace.h>
 #include <asm/reboot.h>
 #include <asm/io.h>
 #include <asm/pgtable.h>
@@ -45,10 +45,27 @@ void __init plat_time_init(struct irqaction *irq)
 }
 
 static struct resource jazz_io_resources[] = {
-        { "dma1", 0x00, 0x1f, IORESOURCE_BUSY },
-        { "timer", 0x40, 0x5f, IORESOURCE_BUSY },
-        { "dma page reg", 0x80, 0x8f, IORESOURCE_BUSY },
-        { "dma2", 0xc0, 0xdf, IORESOURCE_BUSY },
+        {
+                .start  = 0x00,
+                .end    = 0x1f,
+                .name   = "dma1",
+                .flags  = IORESOURCE_BUSY
+        }, {
+                .start  = 0x40,
+                .end    = 0x5f,
+                .name   = "timer",
+                .end    = IORESOURCE_BUSY
+        }, {
+                .start  = 0x80,
+                .end    = 0x8f,
+                .name   = "dma page reg",
+                .flags  = IORESOURCE_BUSY
+        }, {
+                .start  = 0xc0,
+                .end    = 0xdf,
+                .name   = "dma2",
+                .flags  = IORESOURCE_BUSY
+        }
 };
 
 void __init plat_mem_setup(void)
@@ -81,8 +98,6 @@ void __init plat_mem_setup(void)
         _machine_halt = jazz_machine_halt;
         pm_power_off = jazz_machine_power_off;
 
-#warning "Somebody should check if screen_info is ok for Jazz."
-
         screen_info = (struct screen_info) {
                 0, 0,           /* orig-x, orig-y */
                 0,              /* unused */
diff --git a/arch/mips/jmr3927/rbhma3100/irq.c b/arch/mips/jmr3927/rbhma3100/irq.c
index 722174481467..39a0243bed9a 100644
--- a/arch/mips/jmr3927/rbhma3100/irq.c
+++ b/arch/mips/jmr3927/rbhma3100/irq.c
@@ -46,6 +46,7 @@
 #include <linux/smp_lock.h>
 #include <linux/bitops.h>
 
+#include <asm/irq_regs.h>
 #include <asm/io.h>
 #include <asm/mipsregs.h>
 #include <asm/system.h>
@@ -239,45 +240,80 @@ struct tb_irq_space jmr3927_ioc_irqspace = {
         .space_id = 0,
         can_share : 1
 };
+
 struct tb_irq_space jmr3927_irc_irqspace = {
-        .next = NULL,
-        .start_irqno = JMR3927_IRQ_IRC,
-        nr_irqs : JMR3927_NR_IRQ_IRC,
-        .mask_func = mask_irq_irc,
-        .unmask_func = unmask_irq_irc,
-        .name = "on-chip",
-        .space_id = 0,
-        can_share : 0
+        .next           = NULL,
+        .start_irqno    = JMR3927_IRQ_IRC,
+        .nr_irqs        = JMR3927_NR_IRQ_IRC,
+        .mask_func      = mask_irq_irc,
+        .unmask_func    = unmask_irq_irc,
+        .name           = "on-chip",
+        .space_id       = 0,
+        .can_share      = 0
 };
 
-void jmr3927_spurious(struct pt_regs *regs)
+
+#ifdef CONFIG_TX_BRANCH_LIKELY_BUG_WORKAROUND
+static int tx_branch_likely_bug_count = 0;
+static int have_tx_branch_likely_bug = 0;
+
+static void tx_branch_likely_bug_fixup(void)
+{
+        struct pt_regs *regs = get_irq_regs();
+
+        /* TX39/49-BUG: Under this condition, the insn in delay slot
+           of the branch likely insn is executed (not nullified) even
+           the branch condition is false. */
+        if (!have_tx_branch_likely_bug)
+                return;
+        if ((regs->cp0_epc & 0xfff) == 0xffc &&
+            KSEGX(regs->cp0_epc) != KSEG0 &&
+            KSEGX(regs->cp0_epc) != KSEG1) {
+                unsigned int insn = *(unsigned int*)(regs->cp0_epc - 4);
+                /* beql,bnel,blezl,bgtzl */
+                /* bltzl,bgezl,blezall,bgezall */
+                /* bczfl, bcztl */
+                if ((insn & 0xf0000000) == 0x50000000 ||
+                    (insn & 0xfc0e0000) == 0x04020000 ||
+                    (insn & 0xf3fe0000) == 0x41020000) {
+                        regs->cp0_epc -= 4;
+                        tx_branch_likely_bug_count++;
+                        printk(KERN_INFO
+                               "fix branch-likery bug in %s (insn %08x)\n",
+                               current->comm, insn);
+                }
+        }
+}
+#endif
+
+static void jmr3927_spurious(void)
 {
 #ifdef CONFIG_TX_BRANCH_LIKELY_BUG_WORKAROUND
-        tx_branch_likely_bug_fixup(regs);
+        tx_branch_likely_bug_fixup();
 #endif
         printk(KERN_WARNING "spurious interrupt (cause 0x%lx, pc 0x%lx, ra 0x%lx).\n",
                regs->cp0_cause, regs->cp0_epc, regs->regs[31]);
 }
 
-asmlinkage void plat_irq_dispatch(struct pt_regs *regs)
+asmlinkage void plat_irq_dispatch(void)
 {
         int irq;
 
 #ifdef CONFIG_TX_BRANCH_LIKELY_BUG_WORKAROUND
-        tx_branch_likely_bug_fixup(regs);
+        tx_branch_likely_bug_fixup();
 #endif
         if ((regs->cp0_cause & CAUSEF_IP7) == 0) {
 #if 0
-                jmr3927_spurious(regs);
+                jmr3927_spurious();
 #endif
                 return;
         }
         irq = (regs->cp0_cause >> CAUSEB_IP2) & 0x0f;
 
-        do_IRQ(irq + JMR3927_IRQ_IRC, regs);
+        do_IRQ(irq + JMR3927_IRQ_IRC);
 }
 
-static irqreturn_t jmr3927_ioc_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+static irqreturn_t jmr3927_ioc_interrupt(int irq, void *dev_id)
 {
         unsigned char istat = jmr3927_ioc_reg_in(JMR3927_IOC_INTS2_ADDR);
         int i;
@@ -285,7 +321,7 @@ static irqreturn_t jmr3927_ioc_interrupt(int irq, void *dev_id, struct pt_regs *
         for (i = 0; i < JMR3927_NR_IRQ_IOC; i++) {
                 if (istat & (1 << i)) {
                         irq = JMR3927_IRQ_IOC + i;
-                        do_IRQ(irq, regs);
+                        do_IRQ(irq);
                 }
         }
         return IRQ_HANDLED;
@@ -295,7 +331,7 @@ static struct irqaction ioc_action = {
         jmr3927_ioc_interrupt, 0, CPU_MASK_NONE, "IOC", NULL, NULL,
 };
 
-static irqreturn_t jmr3927_isac_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+static irqreturn_t jmr3927_isac_interrupt(int irq, void *dev_id)
 {
         unsigned char istat = jmr3927_isac_reg_in(JMR3927_ISAC_INTS2_ADDR);
         int i;
@@ -303,7 +339,7 @@ static irqreturn_t jmr3927_isac_interrupt(int irq, void *dev_id, struct pt_regs
         for (i = 0; i < JMR3927_NR_IRQ_ISAC; i++) {
                 if (istat & (1 << i)) {
                         irq = JMR3927_IRQ_ISAC + i;
-                        do_IRQ(irq, regs);
+                        do_IRQ(irq);
                 }
         }
         return IRQ_HANDLED;
@@ -314,7 +350,7 @@ static struct irqaction isac_action = {
 };
 
 
-static irqreturn_t jmr3927_isaerr_interrupt(int irq, void * dev_id, struct pt_regs * regs)
+static irqreturn_t jmr3927_isaerr_interrupt(int irq, void *dev_id)
 {
         printk(KERN_WARNING "ISA error interrupt (irq 0x%x).\n", irq);
 
@@ -324,7 +360,7 @@ static struct irqaction isaerr_action = {
         jmr3927_isaerr_interrupt, 0, CPU_MASK_NONE, "ISA error", NULL, NULL,
 };
 
-static irqreturn_t jmr3927_pcierr_interrupt(int irq, void * dev_id, struct pt_regs * regs)
+static irqreturn_t jmr3927_pcierr_interrupt(int irq, void *dev_id)
 {
         printk(KERN_WARNING "PCI error interrupt (irq 0x%x).\n", irq);
         printk(KERN_WARNING "pcistat:%02x, lbstat:%04lx\n",
@@ -439,33 +475,3 @@ void jmr3927_irq_init(u32 irq_base)
 
         jmr3927_irq_base = irq_base;
 }
-
-#ifdef CONFIG_TX_BRANCH_LIKELY_BUG_WORKAROUND
-static int tx_branch_likely_bug_count = 0;
-static int have_tx_branch_likely_bug = 0;
-void tx_branch_likely_bug_fixup(struct pt_regs *regs)
-{
-        /* TX39/49-BUG: Under this condition, the insn in delay slot
-           of the branch likely insn is executed (not nullified) even
-           the branch condition is false. */
-        if (!have_tx_branch_likely_bug)
-                return;
-        if ((regs->cp0_epc & 0xfff) == 0xffc &&
-            KSEGX(regs->cp0_epc) != KSEG0 &&
-            KSEGX(regs->cp0_epc) != KSEG1) {
-                unsigned int insn = *(unsigned int*)(regs->cp0_epc - 4);
-                /* beql,bnel,blezl,bgtzl */
-                /* bltzl,bgezl,blezall,bgezall */
-                /* bczfl, bcztl */
-                if ((insn & 0xf0000000) == 0x50000000 ||
-                    (insn & 0xfc0e0000) == 0x04020000 ||
-                    (insn & 0xf3fe0000) == 0x41020000) {
-                        regs->cp0_epc -= 4;
-                        tx_branch_likely_bug_count++;
-                        printk(KERN_INFO
-                               "fix branch-likery bug in %s (insn %08x)\n",
-                               current->comm, insn);
-                }
-        }
-}
-#endif
diff --git a/arch/mips/kernel/asm-offsets.c b/arch/mips/kernel/asm-offsets.c
index ec28077d5ee2..e9ce5b3721af 100644
--- a/arch/mips/kernel/asm-offsets.c
+++ b/arch/mips/kernel/asm-offsets.c
@@ -93,11 +93,12 @@ void output_thread_info_defines(void)
         offset("#define TI_TASK            ", struct thread_info, task);
         offset("#define TI_EXEC_DOMAIN     ", struct thread_info, exec_domain);
         offset("#define TI_FLAGS           ", struct thread_info, flags);
+        offset("#define TI_TP_VALUE        ", struct thread_info, tp_value);
         offset("#define TI_CPU             ", struct thread_info, cpu);
         offset("#define TI_PRE_COUNT       ", struct thread_info, preempt_count);
         offset("#define TI_ADDR_LIMIT      ", struct thread_info, addr_limit);
         offset("#define TI_RESTART_BLOCK   ", struct thread_info, restart_block);
-        offset("#define TI_TP_VALUE        ", struct thread_info, tp_value);
+        offset("#define TI_REGS            ", struct thread_info, regs);
         constant("#define _THREAD_SIZE_ORDER ", THREAD_SIZE_ORDER);
         constant("#define _THREAD_SIZE       ", THREAD_SIZE);
         constant("#define _THREAD_MASK       ", THREAD_MASK);
diff --git a/arch/mips/kernel/cpu-probe.c b/arch/mips/kernel/cpu-probe.c
index 9fbf8430c849..8485af340ee1 100644
--- a/arch/mips/kernel/cpu-probe.c
+++ b/arch/mips/kernel/cpu-probe.c
@@ -135,7 +135,6 @@ static inline void check_wait(void)
         case CPU_R5000:
         case CPU_NEVADA:
         case CPU_RM7000:
-        case CPU_RM9000:
         case CPU_4KC:
         case CPU_4KEC:
         case CPU_4KSC:
@@ -164,6 +163,14 @@ static inline void check_wait(void)
                 } else
                         printk(" unavailable.\n");
                 break;
+        case CPU_RM9000:
+                if ((c->processor_id & 0x00ff) >= 0x40) {
+                        cpu_wait = r4k_wait;
+                        printk(" available.\n");
+                } else {
+                        printk(" unavailable.\n");
+                }
+                break;
         default:
                 printk(" unavailable.\n");
                 break;
diff --git a/arch/mips/kernel/entry.S b/arch/mips/kernel/entry.S
index 766655f35250..417c08ac76eb 100644
--- a/arch/mips/kernel/entry.S
+++ b/arch/mips/kernel/entry.S
@@ -20,10 +20,7 @@
 #include <asm/mipsmtregs.h>
 #endif
 
-#ifdef CONFIG_PREEMPT
-        .macro  preempt_stop
-        .endm
-#else
+#ifndef CONFIG_PREEMPT
         .macro  preempt_stop
         local_irq_disable
         .endm
@@ -32,9 +29,16 @@
 
         .text
         .align  5
+FEXPORT(ret_from_irq)
+        LONG_S  s0, TI_REGS($28)
+#ifdef CONFIG_PREEMPT
+FEXPORT(ret_from_exception)
+#else
+        b       _ret_from_irq
 FEXPORT(ret_from_exception)
         preempt_stop
-FEXPORT(ret_from_irq)
+#endif
+FEXPORT(_ret_from_irq)
         LONG_L  t0, PT_STATUS(sp)               # returning to kernel mode?
         andi    t0, t0, KU_USER
         beqz    t0, resume_kernel
@@ -79,7 +83,6 @@ FEXPORT(syscall_exit)
 FEXPORT(restore_all)                    # restore full frame
 #ifdef CONFIG_MIPS_MT_SMTC
 /* Detect and execute deferred IPI "interrupts" */
-        move    a0,sp
         jal     deferred_smtc_ipi
 /* Re-arm any temporarily masked interrupts not explicitly "acked" */
         mfc0    v0, CP0_TCSTATUS
diff --git a/arch/mips/kernel/genex.S b/arch/mips/kernel/genex.S
index af6ef2fd8300..5baca16993d0 100644
--- a/arch/mips/kernel/genex.S
+++ b/arch/mips/kernel/genex.S
@@ -131,8 +131,9 @@ NESTED(handle_int, PT_SIZE, sp)
         CLI
         TRACE_IRQS_OFF
 
+        LONG_L  s0, TI_REGS($28)
+        LONG_S  sp, TI_REGS($28)
         PTR_LA  ra, ret_from_irq
-        move    a0, sp
         j       plat_irq_dispatch
         END(handle_int)
 
@@ -219,7 +220,9 @@ NESTED(except_vec_vi_handler, 0, sp)
 #endif /* CONFIG_MIPS_MT_SMTC */
         CLI
         TRACE_IRQS_OFF
-        move    a0, sp
+
+        LONG_L  s0, TI_REGS($28)
+        LONG_S  sp, TI_REGS($28)
         PTR_LA  ra, ret_from_irq
         jr      v0
         END(except_vec_vi_handler)
diff --git a/arch/mips/kernel/irq-msc01.c b/arch/mips/kernel/irq-msc01.c
index 63dfeb41796b..650a80ca3741 100644
--- a/arch/mips/kernel/irq-msc01.c
+++ b/arch/mips/kernel/irq-msc01.c
@@ -1,16 +1,17 @@
 /*
- * Copyright (c) 2004 MIPS Inc
- * Author: chris@mips.com
- *
  * This program is free software; you can redistribute  it and/or modify it
  * under  the terms of  the GNU General  Public License as published by the
  * Free Software Foundation;  either version 2 of the  License, or (at your
  * option) any later version.
+ *
+ * Copyright (c) 2004 MIPS Inc
+ * Author: chris@mips.com
+ *
+ * Copyright (C) 2004, 06 Ralf Baechle <ralf@linux-mips.org>
  */
 #include <linux/module.h>
 #include <linux/interrupt.h>
 #include <linux/kernel.h>
-#include <asm/ptrace.h>
 #include <linux/sched.h>
 #include <linux/kernel_stat.h>
 #include <asm/io.h>
@@ -115,14 +116,14 @@ static void end_msc_irq(unsigned int irq)
 /*
  * Interrupt handler for interrupts coming from SOC-it.
  */
-void ll_msc_irq(struct pt_regs *regs)
+void ll_msc_irq(void)
 {
         unsigned int irq;
 
         /* read the interrupt vector register */
         MSCIC_READ(MSC01_IC_VEC, irq);
         if (irq < 64)
-                do_IRQ(irq + irq_base, regs);
+                do_IRQ(irq + irq_base);
         else {
                 /* Ignore spurious interrupt */
         }
diff --git a/arch/mips/kernel/irq-mv6434x.c b/arch/mips/kernel/irq-mv6434x.c
index b117e64da64d..37d106202b83 100644
--- a/arch/mips/kernel/irq-mv6434x.c
+++ b/arch/mips/kernel/irq-mv6434x.c
@@ -1,7 +1,7 @@
 /*
  * Copyright 2002 Momentum Computer
  * Author: mdharm@momenco.com
- * Copyright (C) 2004 Ralf Baechle <ralf@linux-mips.org>
+ * Copyright (C) 2004, 06 Ralf Baechle <ralf@linux-mips.org>
  *
  * This program is free software; you can redistribute  it and/or modify it
  * under  the terms of  the GNU General  Public License as published by the
@@ -15,7 +15,6 @@
 #include <linux/mv643xx.h>
 #include <linux/sched.h>
 
-#include <asm/ptrace.h>
 #include <asm/io.h>
 #include <asm/irq.h>
 #include <asm/marvell.h>
@@ -113,7 +112,7 @@ static void end_mv64340_irq(unsigned int irq)
  * Interrupt handler for interrupts coming from the Marvell chip.
  * It could be built in ethernet ports etc...
  */
-void ll_mv64340_irq(struct pt_regs *regs)
+void ll_mv64340_irq(void)
 {
         unsigned int irq_src_low, irq_src_high;
         unsigned int irq_mask_low, irq_mask_high;
@@ -129,9 +128,9 @@ void ll_mv64340_irq(struct pt_regs *regs)
         irq_src_high &= irq_mask_high;
 
         if (irq_src_low)
-                do_IRQ(ls1bit32(irq_src_low) + irq_base, regs);
+                do_IRQ(ls1bit32(irq_src_low) + irq_base);
         else
-                do_IRQ(ls1bit32(irq_src_high) + irq_base + 32, regs);
+                do_IRQ(ls1bit32(irq_src_high) + irq_base + 32);
 }
 
 #define shutdown_mv64340_irq    disable_mv64340_irq
diff --git a/arch/mips/kernel/irq.c b/arch/mips/kernel/irq.c
index d955aaefbb8e..dd24434392b6 100644
--- a/arch/mips/kernel/irq.c
+++ b/arch/mips/kernel/irq.c
@@ -53,12 +53,12 @@ unsigned long irq_hwmask[NR_IRQS];
  * SMP cross-CPU interrupts have their own specific
  * handlers).
  */
-asmlinkage unsigned int do_IRQ(unsigned int irq, struct pt_regs *regs)
+asmlinkage unsigned int do_IRQ(unsigned int irq)
 {
         irq_enter();
 
         __DO_IRQ_SMTC_HOOK();
-        __do_IRQ(irq, regs);
+        __do_IRQ(irq);
 
         irq_exit();
 
@@ -110,7 +110,7 @@ skip:
         return 0;
 }
 
-asmlinkage void spurious_interrupt(struct pt_regs *regs)
+asmlinkage void spurious_interrupt(void)
 {
         atomic_inc(&irq_err_count);
 }
diff --git a/arch/mips/kernel/proc.c b/arch/mips/kernel/proc.c
index d8beef107902..4ed37ba19731 100644
--- a/arch/mips/kernel/proc.c
+++ b/arch/mips/kernel/proc.c
@@ -89,9 +89,9 @@ static const char *cpu_name[] = {
 
 static int show_cpuinfo(struct seq_file *m, void *v)
 {
-        unsigned int version = current_cpu_data.processor_id;
-        unsigned int fp_vers = current_cpu_data.fpu_id;
         unsigned long n = (unsigned long) v - 1;
+        unsigned int version = cpu_data[n].processor_id;
+        unsigned int fp_vers = cpu_data[n].fpu_id;
         char fmt [64];
 
 #ifdef CONFIG_SMP
@@ -107,9 +107,9 @@ static int show_cpuinfo(struct seq_file *m, void *v)
 
         seq_printf(m, "processor\t\t: %ld\n", n);
         sprintf(fmt, "cpu model\t\t: %%s V%%d.%%d%s\n",
-                cpu_has_fpu ? "  FPU V%d.%d" : "");
-        seq_printf(m, fmt, cpu_name[current_cpu_data.cputype <= CPU_LAST ?
-                                    current_cpu_data.cputype : CPU_UNKNOWN],
+                cpu_data[n].options & MIPS_CPU_FPU ? "  FPU V%d.%d" : "");
+        seq_printf(m, fmt, cpu_name[cpu_data[n].cputype <= CPU_LAST ?
+                                    cpu_data[n].cputype : CPU_UNKNOWN],
                                    (version >> 4) & 0x0f, version & 0x0f,
                                    (fp_vers >> 4) & 0x0f, fp_vers & 0x0f);
         seq_printf(m, "BogoMIPS\t\t: %lu.%02lu\n",
@@ -118,7 +118,7 @@ static int show_cpuinfo(struct seq_file *m, void *v)
         seq_printf(m, "wait instruction\t: %s\n", cpu_wait ? "yes" : "no");
         seq_printf(m, "microsecond timers\t: %s\n",
                       cpu_has_counter ? "yes" : "no");
-        seq_printf(m, "tlb_entries\t\t: %d\n", current_cpu_data.tlbsize);
+        seq_printf(m, "tlb_entries\t\t: %d\n", cpu_data[n].tlbsize);
         seq_printf(m, "extra interrupt vector\t: %s\n",
                       cpu_has_divec ? "yes" : "no");
         seq_printf(m, "hardware watchpoint\t: %s\n",
diff --git a/arch/mips/kernel/process.c b/arch/mips/kernel/process.c
index 045d987bc683..9f307eb1a31e 100644
--- a/arch/mips/kernel/process.c
+++ b/arch/mips/kernel/process.c
@@ -115,7 +115,7 @@ void start_thread(struct pt_regs * regs, unsigned long pc, unsigned long sp)
         status |= KU_USER;
         regs->cp0_status = status;
         clear_used_math();
-        lose_fpu();
+        clear_fpu_owner();
         if (cpu_has_dsp)
                 __init_dsp();
         regs->cp0_epc = pc;
diff --git a/arch/mips/kernel/ptrace.c b/arch/mips/kernel/ptrace.c
index 362d1728e531..258d74fd0b63 100644
--- a/arch/mips/kernel/ptrace.c
+++ b/arch/mips/kernel/ptrace.c
@@ -106,6 +106,7 @@ int ptrace_setregs (struct task_struct *child, __s64 __user *data)
 int ptrace_getfpregs (struct task_struct *child, __u32 __user *data)
 {
         int i;
+        unsigned int tmp;
 
         if (!access_ok(VERIFY_WRITE, data, 33 * 8))
                 return -EIO;
@@ -121,10 +122,10 @@ int ptrace_getfpregs (struct task_struct *child, __u32 __user *data)
 
         __put_user (child->thread.fpu.fcr31, data + 64);
 
+        preempt_disable();
         if (cpu_has_fpu) {
-                unsigned int flags, tmp;
+                unsigned int flags;
 
-                preempt_disable();
                 if (cpu_has_mipsmt) {
                         unsigned int vpflags = dvpe();
                         flags = read_c0_status();
@@ -138,11 +139,11 @@ int ptrace_getfpregs (struct task_struct *child, __u32 __user *data)
                         __asm__ __volatile__("cfc1\t%0,$0" : "=r" (tmp));
                         write_c0_status(flags);
                 }
-                preempt_enable();
-                __put_user (tmp, data + 65);
         } else {
-                __put_user ((__u32) 0, data + 65);
+                tmp = 0;
         }
+        preempt_enable();
+        __put_user (tmp, data + 65);
 
         return 0;
 }
@@ -245,16 +246,17 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
                         unsigned int mtflags;
 #endif /* CONFIG_MIPS_MT_SMTC */
 
-                        if (!cpu_has_fpu)
+                        preempt_disable();
+                        if (!cpu_has_fpu) {
+                                preempt_enable();
                                 break;
+                        }
 
 #ifdef CONFIG_MIPS_MT_SMTC
                         /* Read-modify-write of Status must be atomic */
                         local_irq_save(irqflags);
                         mtflags = dmt();
 #endif /* CONFIG_MIPS_MT_SMTC */
-
-                        preempt_disable();
                         if (cpu_has_mipsmt) {
                                 unsigned int vpflags = dvpe();
                                 flags = read_c0_status();
diff --git a/arch/mips/kernel/ptrace32.c b/arch/mips/kernel/ptrace32.c
index f40ecd8be05f..d9a39c169450 100644
--- a/arch/mips/kernel/ptrace32.c
+++ b/arch/mips/kernel/ptrace32.c
@@ -175,7 +175,9 @@ asmlinkage int sys32_ptrace(int request, int pid, int addr, int data)
                         unsigned int mtflags;
 #endif /* CONFIG_MIPS_MT_SMTC */
 
+                        preempt_disable();
                         if (!cpu_has_fpu) {
+                                preempt_enable();
                                 tmp = 0;
                                 break;
                         }
@@ -186,7 +188,6 @@ asmlinkage int sys32_ptrace(int request, int pid, int addr, int data)
                         mtflags = dmt();
 #endif /* CONFIG_MIPS_MT_SMTC */
 
-                        preempt_disable();
                         if (cpu_has_mipsmt) {
                                 unsigned int vpflags = dvpe();
                                 flags = read_c0_status();
diff --git a/arch/mips/kernel/rtlx.c b/arch/mips/kernel/rtlx.c
index cdab1b2cd134..8c8c8324f775 100644
--- a/arch/mips/kernel/rtlx.c
+++ b/arch/mips/kernel/rtlx.c
@@ -61,16 +61,16 @@ static int sp_stopping = 0;
 
 extern void *vpe_get_shared(int index);
 
-static void rtlx_dispatch(struct pt_regs *regs)
+static void rtlx_dispatch(void)
 {
-        do_IRQ(MIPSCPU_INT_BASE + MIPS_CPU_RTLX_IRQ, regs);
+        do_IRQ(MIPSCPU_INT_BASE + MIPS_CPU_RTLX_IRQ);
 }
 
 
 /* Interrupt handler may be called before rtlx_init has otherwise had
    a chance to run.
 */
-static irqreturn_t rtlx_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+static irqreturn_t rtlx_interrupt(int irq, void *dev_id)
 {
         int i;
 
diff --git a/arch/mips/kernel/smp-mt.c b/arch/mips/kernel/smp-mt.c
index 766253c44f3f..3b5f3b632622 100644
--- a/arch/mips/kernel/smp-mt.c
+++ b/arch/mips/kernel/smp-mt.c
@@ -106,22 +106,22 @@ void __init sanitize_tlb_entries(void)
         clear_c0_mvpcontrol(MVPCONTROL_VPC);
 }
 
-static void ipi_resched_dispatch (struct pt_regs *regs)
+static void ipi_resched_dispatch(void)
 {
-        do_IRQ(MIPSCPU_INT_BASE + MIPS_CPU_IPI_RESCHED_IRQ, regs);
+        do_IRQ(MIPSCPU_INT_BASE + MIPS_CPU_IPI_RESCHED_IRQ);
 }
 
-static void ipi_call_dispatch (struct pt_regs *regs)
+static void ipi_call_dispatch(void)
 {
-        do_IRQ(MIPSCPU_INT_BASE + MIPS_CPU_IPI_CALL_IRQ, regs);
+        do_IRQ(MIPSCPU_INT_BASE + MIPS_CPU_IPI_CALL_IRQ);
 }
 
-irqreturn_t ipi_resched_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+static irqreturn_t ipi_resched_interrupt(int irq, void *dev_id)
 {
         return IRQ_HANDLED;
 }
 
-irqreturn_t ipi_call_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+static irqreturn_t ipi_call_interrupt(int irq, void *dev_id)
 {
         smp_call_function_interrupt();
 
@@ -250,8 +250,8 @@ void __init plat_prepare_cpus(unsigned int max_cpus)
 {
         /* set up ipi interrupts */
         if (cpu_has_vint) {
-                set_vi_handler (MIPS_CPU_IPI_RESCHED_IRQ, ipi_resched_dispatch);
-                set_vi_handler (MIPS_CPU_IPI_CALL_IRQ, ipi_call_dispatch);
+                set_vi_handler(MIPS_CPU_IPI_RESCHED_IRQ, ipi_resched_dispatch);
+                set_vi_handler(MIPS_CPU_IPI_CALL_IRQ, ipi_call_dispatch);
         }
 
         cpu_ipi_resched_irq = MIPSCPU_INT_BASE + MIPS_CPU_IPI_RESCHED_IRQ;
diff --git a/arch/mips/kernel/smp.c b/arch/mips/kernel/smp.c
index 221895802dca..1af3612a1ce8 100644
--- a/arch/mips/kernel/smp.c
+++ b/arch/mips/kernel/smp.c
@@ -467,14 +467,18 @@ static DEFINE_PER_CPU(struct cpu, cpu_devices);
 
 static int __init topology_init(void)
 {
-        int cpu;
-        int ret;
+        int i, ret;
 
-        for_each_present_cpu(cpu) {
-                ret = register_cpu(&per_cpu(cpu_devices, cpu), cpu);
+#ifdef CONFIG_NUMA
+        for_each_online_node(i)
+                register_one_node(i);
+#endif /* CONFIG_NUMA */
+
+        for_each_present_cpu(i) {
+                ret = register_cpu(&per_cpu(cpu_devices, i), i);
                 if (ret)
                         printk(KERN_WARNING "topology_init: register_cpu %d "
-                               "failed (%d)\n", cpu, ret);
+                               "failed (%d)\n", i, ret);
         }
 
         return 0;
diff --git a/arch/mips/kernel/smtc-asm.S b/arch/mips/kernel/smtc-asm.S
index 76cb31d57482..1cb9441f1474 100644
--- a/arch/mips/kernel/smtc-asm.S
+++ b/arch/mips/kernel/smtc-asm.S
@@ -97,15 +97,12 @@ FEXPORT(__smtc_ipi_vector)
         SAVE_ALL
         CLI
         TRACE_IRQS_OFF
-        move    a0,sp
         /* Function to be invoked passed stack pad slot 5 */
         lw      t0,PT_PADSLOT5(sp)
         /* Argument from sender passed in stack pad slot 4 */
-        lw      a1,PT_PADSLOT4(sp)
-        jalr    t0
-        nop
-        j       ret_from_irq
-        nop
+        lw      a0,PT_PADSLOT4(sp)
+        PTR_LA  ra, _ret_from_irq
+        jr      t0
 
 /*
  * Called from idle loop to provoke processing of queued IPIs
diff --git a/arch/mips/kernel/smtc.c b/arch/mips/kernel/smtc.c
index 604bcc5cb7c8..cc1f7474f7d7 100644
--- a/arch/mips/kernel/smtc.c
+++ b/arch/mips/kernel/smtc.c
@@ -82,7 +82,7 @@ struct smtc_ipi_q freeIPIq;
 
 /* Forward declarations */
 
-void ipi_decode(struct pt_regs *, struct smtc_ipi *);
+void ipi_decode(struct smtc_ipi *);
 void post_direct_ipi(int cpu, struct smtc_ipi *pipi);
 void setup_cross_vpe_interrupts(void);
 void init_smtc_stats(void);
@@ -820,19 +820,19 @@ void post_direct_ipi(int cpu, struct smtc_ipi *pipi)
         write_tc_c0_tcrestart(__smtc_ipi_vector);
 }
 
-void ipi_resched_interrupt(struct pt_regs *regs)
+static void ipi_resched_interrupt(void)
 {
         /* Return from interrupt should be enough to cause scheduler check */
 }
 
 
-void ipi_call_interrupt(struct pt_regs *regs)
+static void ipi_call_interrupt(void)
 {
         /* Invoke generic function invocation code in smp.c */
         smp_call_function_interrupt();
 }
 
-void ipi_decode(struct pt_regs *regs, struct smtc_ipi *pipi)
+void ipi_decode(struct smtc_ipi *pipi)
 {
         void *arg_copy = pipi->arg;
         int type_copy = pipi->type;
@@ -846,15 +846,15 @@ void ipi_decode(struct pt_regs *regs, struct smtc_ipi *pipi)
 #ifdef SMTC_IDLE_HOOK_DEBUG
                 clock_hang_reported[dest_copy] = 0;
 #endif /* SMTC_IDLE_HOOK_DEBUG */
-                local_timer_interrupt(0, NULL, regs);
+                local_timer_interrupt(0, NULL);
                 break;
         case LINUX_SMP_IPI:
                 switch ((int)arg_copy) {
                 case SMP_RESCHEDULE_YOURSELF:
-                        ipi_resched_interrupt(regs);
+                        ipi_resched_interrupt();
                         break;
                 case SMP_CALL_FUNCTION:
-                        ipi_call_interrupt(regs);
+                        ipi_call_interrupt();
                         break;
                 default:
                         printk("Impossible SMTC IPI Argument 0x%x\n",
@@ -868,7 +868,7 @@ void ipi_decode(struct pt_regs *regs, struct smtc_ipi *pipi)
         }
 }
 
-void deferred_smtc_ipi(struct pt_regs *regs)
+void deferred_smtc_ipi(void)
 {
         struct smtc_ipi *pipi;
         unsigned long flags;
@@ -883,7 +883,7 @@ void deferred_smtc_ipi(struct pt_regs *regs)
                 while((pipi = smtc_ipi_dq(&IPIQ[q])) != NULL) {
                         /* ipi_decode() should be called with interrupts off */
                         local_irq_save(flags);
-                        ipi_decode(regs, pipi);
+                        ipi_decode(pipi);
                         local_irq_restore(flags);
                 }
         }
@@ -917,7 +917,7 @@ void smtc_timer_broadcast(int vpe)
 
 static int cpu_ipi_irq = MIPSCPU_INT_BASE + MIPS_CPU_IPI_IRQ;
 
-static irqreturn_t ipi_interrupt(int irq, void *dev_idm, struct pt_regs *regs)
+static irqreturn_t ipi_interrupt(int irq, void *dev_idm)
 {
         int my_vpe = cpu_data[smp_processor_id()].vpe_id;
         int my_tc = cpu_data[smp_processor_id()].tc_id;
@@ -978,7 +978,7 @@ static irqreturn_t ipi_interrupt(int irq, void *dev_idm, struct pt_regs *regs)
                                  * with interrupts off
                                  */
                                 local_irq_save(flags);
-                                ipi_decode(regs, pipi);
+                                ipi_decode(pipi);
                                 local_irq_restore(flags);
                         }
                 }
@@ -987,9 +987,9 @@ static irqreturn_t ipi_interrupt(int irq, void *dev_idm, struct pt_regs *regs)
         return IRQ_HANDLED;
 }
 
-static void ipi_irq_dispatch(struct pt_regs *regs)
+static void ipi_irq_dispatch(void)
 {
-        do_IRQ(cpu_ipi_irq, regs);
+        do_IRQ(cpu_ipi_irq);
 }
 
 static struct irqaction irq_ipi;
diff --git a/arch/mips/kernel/time.c b/arch/mips/kernel/time.c
index a8340802f2d7..debe86c2f691 100644
--- a/arch/mips/kernel/time.c
+++ b/arch/mips/kernel/time.c
@@ -322,18 +322,17 @@ static long last_rtc_update;
  * a broadcasted inter-processor interrupt which itself is triggered
  * by the global timer interrupt.
  */
-void local_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+void local_timer_interrupt(int irq, void *dev_id)
 {
-        if (current->pid)
-                profile_tick(CPU_PROFILING, regs);
-        update_process_times(user_mode(regs));
+        profile_tick(CPU_PROFILING);
+        update_process_times(user_mode(get_irq_regs()));
 }
 
 /*
  * High-level timer interrupt service routines.  This function
  * is set as irqaction->handler and is invoked through do_IRQ.
  */
-irqreturn_t timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+irqreturn_t timer_interrupt(int irq, void *dev_id)
 {
         unsigned long j;
         unsigned int count;
@@ -419,22 +418,22 @@ irqreturn_t timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
          * In SMP mode, local_timer_interrupt() is invoked by appropriate
          * low-level local timer interrupt handler.
          */
-        local_timer_interrupt(irq, dev_id, regs);
+        local_timer_interrupt(irq, dev_id);
 
         return IRQ_HANDLED;
 }
 
-int null_perf_irq(struct pt_regs *regs)
+int null_perf_irq(void)
 {
         return 0;
 }
 
-int (*perf_irq)(struct pt_regs *regs) = null_perf_irq;
+int (*perf_irq)(void) = null_perf_irq;
 
 EXPORT_SYMBOL(null_perf_irq);
 EXPORT_SYMBOL(perf_irq);
 
-asmlinkage void ll_timer_interrupt(int irq, struct pt_regs *regs)
+asmlinkage void ll_timer_interrupt(int irq)
 {
         int r2 = cpu_has_mips_r2;
 
@@ -448,25 +447,25 @@ asmlinkage void ll_timer_interrupt(int irq, struct pt_regs *regs)
          * performance counter interrupt handler anyway.
          */
         if (!r2 || (read_c0_cause() & (1 << 26)))
-                if (perf_irq(regs))
+                if (perf_irq())
                         goto out;
 
         /* we keep interrupt disabled all the time */
         if (!r2 || (read_c0_cause() & (1 << 30)))
-                timer_interrupt(irq, NULL, regs);
+                timer_interrupt(irq, NULL);
 
 out:
         irq_exit();
 }
 
-asmlinkage void ll_local_timer_interrupt(int irq, struct pt_regs *regs)
+asmlinkage void ll_local_timer_interrupt(int irq)
 {
         irq_enter();
         if (smp_processor_id() != 0)
                 kstat_this_cpu.irqs[irq]++;
 
         /* we keep interrupt disabled all the time */
-        local_timer_interrupt(irq, NULL, regs);
+        local_timer_interrupt(irq, NULL);
 
         irq_exit();
 }
diff --git a/arch/mips/kernel/traps.c b/arch/mips/kernel/traps.c
index b7292a56d4cd..cce8313ec27d 100644
--- a/arch/mips/kernel/traps.c
+++ b/arch/mips/kernel/traps.c
@@ -66,7 +66,7 @@ extern asmlinkage void handle_mcheck(void);
 extern asmlinkage void handle_reserved(void);
 
 extern int fpu_emulator_cop1Handler(struct pt_regs *xcp,
-        struct mips_fpu_struct *ctx);
+        struct mips_fpu_struct *ctx, int has_fpu);
 
 void (*board_be_init)(void);
 int (*board_be_handler)(struct pt_regs *regs, int is_fixup);
@@ -641,7 +641,7 @@ asmlinkage void do_fpe(struct pt_regs *regs, unsigned long fcr31)
                 preempt_enable();
 
                 /* Run the emulator */
-                sig = fpu_emulator_cop1Handler (regs, &current->thread.fpu);
+                sig = fpu_emulator_cop1Handler (regs, &current->thread.fpu, 1);
 
                 preempt_disable();
 
@@ -791,11 +791,13 @@ asmlinkage void do_cpu(struct pt_regs *regs)
                         set_used_math();
                 }
 
-                preempt_enable();
-
-                if (!cpu_has_fpu) {
-                        int sig = fpu_emulator_cop1Handler(regs,
-                                                &current->thread.fpu);
+                if (cpu_has_fpu) {
+                        preempt_enable();
+                } else {
+                        int sig;
+                        preempt_enable();
+                        sig = fpu_emulator_cop1Handler(regs,
+                                                &current->thread.fpu, 0);
                         if (sig)
                                 force_sig(sig, current);
 #ifdef CONFIG_MIPS_MT_FPAFF
diff --git a/arch/mips/lasat/interrupt.c b/arch/mips/lasat/interrupt.c
index 456be8fc961a..a144a002dcc4 100644
--- a/arch/mips/lasat/interrupt.c
+++ b/arch/mips/lasat/interrupt.c
@@ -108,14 +108,14 @@ static unsigned long get_int_status_200(void)
         return int_status;
 }
 
-asmlinkage void plat_irq_dispatch(struct pt_regs *regs)
+asmlinkage void plat_irq_dispatch(void)
 {
         unsigned long int_status;
         unsigned int cause = read_c0_cause();
         int irq;
 
         if (cause & CAUSEF_IP7) {       /* R4000 count / compare IRQ */
-                ll_timer_interrupt(7, regs);
+                ll_timer_interrupt(7);
                 return;
         }
 
@@ -125,7 +125,7 @@ asmlinkage void plat_irq_dispatch(struct pt_regs *regs)
         if (int_status) {
                 irq = ls1bit32(int_status);
 
-                do_IRQ(irq, regs);
+                do_IRQ(irq);
         }
 }
 
diff --git a/arch/mips/math-emu/cp1emu.c b/arch/mips/math-emu/cp1emu.c
index 3f0d5d26d506..80531b35cd61 100644
--- a/arch/mips/math-emu/cp1emu.c
+++ b/arch/mips/math-emu/cp1emu.c
@@ -38,8 +38,6 @@
 
 #include <asm/inst.h>
 #include <asm/bootinfo.h>
-#include <asm/cpu.h>
-#include <asm/cpu-features.h>
 #include <asm/processor.h>
 #include <asm/ptrace.h>
 #include <asm/signal.h>
@@ -1233,7 +1231,8 @@ static int fpu_emu(struct pt_regs *xcp, struct mips_fpu_struct *ctx,
         return 0;
 }
 
-int fpu_emulator_cop1Handler(struct pt_regs *xcp, struct mips_fpu_struct *ctx)
+int fpu_emulator_cop1Handler(struct pt_regs *xcp, struct mips_fpu_struct *ctx,
+        int has_fpu)
 {
         unsigned long oldepc, prevepc;
         mips_instruction insn;
@@ -1263,7 +1262,7 @@ int fpu_emulator_cop1Handler(struct pt_regs *xcp, struct mips_fpu_struct *ctx)
                         ieee754_csr.rm = mips_rm[ieee754_csr.rm];
                 }
 
-                if (cpu_has_fpu)
+                if (has_fpu)
                         break;
                 if (sig)
                         break;
diff --git a/arch/mips/mips-boards/atlas/atlas_int.c b/arch/mips/mips-boards/atlas/atlas_int.c
index a020a3cb4f4b..be624b8c3b0e 100644
--- a/arch/mips/mips-boards/atlas/atlas_int.c
+++ b/arch/mips/mips-boards/atlas/atlas_int.c
@@ -101,7 +101,7 @@ static inline int ls1bit32(unsigned int x)
         return b;
 }
 
-static inline void atlas_hw0_irqdispatch(struct pt_regs *regs)
+static inline void atlas_hw0_irqdispatch(void)
 {
         unsigned long int_status;
         int irq;
@@ -116,7 +116,7 @@ static inline void atlas_hw0_irqdispatch(struct pt_regs *regs)
 
         DEBUG_INT("atlas_hw0_irqdispatch: irq=%d\n", irq);
 
-        do_IRQ(irq, regs);
+        do_IRQ(irq);
 }
 
 static inline int clz(unsigned long x)
@@ -188,7 +188,7 @@ static inline unsigned int irq_ffs(unsigned int pending)
  * then we just return, if multiple IRQs are pending then we will just take
  * another exception, big deal.
  */
-asmlinkage void plat_irq_dispatch(struct pt_regs *regs)
+asmlinkage void plat_irq_dispatch(void)
 {
         unsigned int pending = read_c0_cause() & read_c0_status() & ST0_IM;
         int irq;
@@ -196,11 +196,11 @@ asmlinkage void plat_irq_dispatch(struct pt_regs *regs)
         irq = irq_ffs(pending);
 
         if (irq == MIPSCPU_INT_ATLAS)
-                atlas_hw0_irqdispatch(regs);
+                atlas_hw0_irqdispatch();
         else if (irq >= 0)
-                do_IRQ(MIPSCPU_INT_BASE + irq, regs);
+                do_IRQ(MIPSCPU_INT_BASE + irq);
         else
-                spurious_interrupt(regs);
+                spurious_interrupt();
 }
 
 static inline void init_atlas_irqs (int base)
diff --git a/arch/mips/mips-boards/generic/time.c b/arch/mips/mips-boards/generic/time.c
index 8d15861fce61..6f8a9fe7c1e3 100644
--- a/arch/mips/mips-boards/generic/time.c
+++ b/arch/mips/mips-boards/generic/time.c
@@ -30,7 +30,6 @@
 
 #include <asm/mipsregs.h>
 #include <asm/mipsmtregs.h>
-#include <asm/ptrace.h>
 #include <asm/hardirq.h>
 #include <asm/irq.h>
 #include <asm/div64.h>
@@ -82,19 +81,19 @@ static inline void scroll_display_message(void)
         }
 }
 
-static void mips_timer_dispatch (struct pt_regs *regs)
+static void mips_timer_dispatch(void)
 {
-        do_IRQ (mips_cpu_timer_irq, regs);
+        do_IRQ(mips_cpu_timer_irq);
 }
 
 /*
  * Redeclare until I get around mopping the timer code insanity on MIPS.
  */
-extern int null_perf_irq(struct pt_regs *regs);
+extern int null_perf_irq(void);
 
-extern int (*perf_irq)(struct pt_regs *regs);
+extern int (*perf_irq)(void);
 
-irqreturn_t mips_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+irqreturn_t mips_timer_interrupt(int irq, void *dev_id)
 {
         int cpu = smp_processor_id();
 
@@ -119,7 +118,7 @@ irqreturn_t mips_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
          * perf counter overflow, or both.
          */
         if (read_c0_cause() & (1 << 26))
-                perf_irq(regs);
+                perf_irq();
 
         if (read_c0_cause() & (1 << 30)) {
                 /* If timer interrupt, make it de-assert */
@@ -139,13 +138,13 @@ irqreturn_t mips_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
                  * the tick on VPE 0 to run the full timer_interrupt().
                  */
                 if (cpu_data[cpu].vpe_id == 0) {
-                                timer_interrupt(irq, NULL, regs);
+                                timer_interrupt(irq, NULL);
                                 smtc_timer_broadcast(cpu_data[cpu].vpe_id);
                                 scroll_display_message();
                 } else {
                         write_c0_compare(read_c0_count() +
                                          (mips_hpt_frequency/HZ));
-                        local_timer_interrupt(irq, dev_id, regs);
+                        local_timer_interrupt(irq, dev_id);
                         smtc_timer_broadcast(cpu_data[cpu].vpe_id);
                 }
         }
@@ -159,12 +158,12 @@ irqreturn_t mips_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
                  * timer int.
                  */
                 if (!r2 || (read_c0_cause() & (1 << 26)))
-                        if (perf_irq(regs))
+                        if (perf_irq())
                                 goto out;
 
                 /* we keep interrupt disabled all the time */
                 if (!r2 || (read_c0_cause() & (1 << 30)))
-                        timer_interrupt(irq, NULL, regs);
+                        timer_interrupt(irq, NULL);
 
                 scroll_display_message();
         } else {
@@ -180,7 +179,7 @@ irqreturn_t mips_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
                 /*
                  * Other CPUs should do profiling and process accounting
                  */
-                local_timer_interrupt(irq, dev_id, regs);
+                local_timer_interrupt(irq, dev_id);
         }
 out:
 #endif /* CONFIG_MIPS_MT_SMTC */
diff --git a/arch/mips/mips-boards/malta/malta_int.c b/arch/mips/mips-boards/malta/malta_int.c
index 7cc0ba4f553a..6244d0e2c7de 100644
--- a/arch/mips/mips-boards/malta/malta_int.c
+++ b/arch/mips/mips-boards/malta/malta_int.c
@@ -114,7 +114,7 @@ static inline int get_int(void)
         return irq;
 }
 
-static void malta_hw0_irqdispatch(struct pt_regs *regs)
+static void malta_hw0_irqdispatch(void)
 {
         int irq;
 
@@ -123,17 +123,21 @@ static void malta_hw0_irqdispatch(struct pt_regs *regs)
                 return;  /* interrupt has already been cleared */
         }
 
-        do_IRQ(MALTA_INT_BASE+irq, regs);
+        do_IRQ(MALTA_INT_BASE + irq);
 }
 
-void corehi_irqdispatch(struct pt_regs *regs)
+static void corehi_irqdispatch(void)
 {
+        unsigned int intedge, intsteer, pcicmd, pcibadaddr;
+        unsigned int pcimstat, intisr, inten, intpol;
         unsigned int intrcause,datalo,datahi;
-        unsigned int pcimstat, intisr, inten, intpol, intedge, intsteer, pcicmd, pcibadaddr;
+        struct pt_regs *regs;
 
         printk("CoreHI interrupt, shouldn't happen, so we die here!!!\n");
-        printk("epc   : %08lx\nStatus: %08lx\nCause : %08lx\nbadVaddr : %08lx\n"
-, regs->cp0_epc, regs->cp0_status, regs->cp0_cause, regs->cp0_badvaddr);
+        printk("epc   : %08lx\nStatus: %08lx\n"
+               "Cause : %08lx\nbadVaddr : %08lx\n",
+               regs->cp0_epc, regs->cp0_status,
+               regs->cp0_cause, regs->cp0_badvaddr);
 
         /* Read all the registers and then print them as there is a
            problem with interspersed printk's upsetting the Bonito controller.
@@ -146,7 +150,7 @@ void corehi_irqdispatch(struct pt_regs *regs)
         case MIPS_REVISION_CORID_CORE_FPGA3:
         case MIPS_REVISION_CORID_CORE_24K:
         case MIPS_REVISION_CORID_CORE_EMUL_MSC:
-                ll_msc_irq(regs);
+                ll_msc_irq();
                 break;
         case MIPS_REVISION_CORID_QED_RM5261:
         case MIPS_REVISION_CORID_CORE_LV:
@@ -208,23 +212,23 @@ static inline unsigned int irq_ffs(unsigned int pending)
         unsigned int a0 = 7;
         unsigned int t0;
 
-        t0 = s0 & 0xf000;
+        t0 = pending & 0xf000;
         t0 = t0 < 1;
         t0 = t0 << 2;
         a0 = a0 - t0;
-        s0 = s0 << t0;
+        pending = pending << t0;
 
-        t0 = s0 & 0xc000;
+        t0 = pending & 0xc000;
         t0 = t0 < 1;
         t0 = t0 << 1;
         a0 = a0 - t0;
-        s0 = s0 << t0;
+        pending = pending << t0;
 
-        t0 = s0 & 0x8000;
+        t0 = pending & 0x8000;
         t0 = t0 < 1;
         //t0 = t0 << 2;
         a0 = a0 - t0;
-        //s0 = s0 << t0;
+        //pending = pending << t0;
 
         return a0;
 #endif
@@ -255,7 +259,7 @@ static inline unsigned int irq_ffs(unsigned int pending)
  * another exception, big deal.
  */
 
-asmlinkage void plat_irq_dispatch(struct pt_regs *regs)
+asmlinkage void plat_irq_dispatch(void)
 {
         unsigned int pending = read_c0_cause() & read_c0_status() & ST0_IM;
         int irq;
@@ -263,11 +267,11 @@ asmlinkage void plat_irq_dispatch(struct pt_regs *regs)
         irq = irq_ffs(pending);
 
         if (irq == MIPSCPU_INT_I8259A)
-                malta_hw0_irqdispatch(regs);
+                malta_hw0_irqdispatch();
         else if (irq > 0)
-                do_IRQ(MIPSCPU_INT_BASE + irq, regs);
+                do_IRQ(MIPSCPU_INT_BASE + irq);
         else
-                spurious_interrupt(regs);
+                spurious_interrupt();
 }
 
 static struct irqaction i8259irq = {
diff --git a/arch/mips/mips-boards/sead/sead_int.c b/arch/mips/mips-boards/sead/sead_int.c
index 9168d934c661..f445fcddfdfd 100644
--- a/arch/mips/mips-boards/sead/sead_int.c
+++ b/arch/mips/mips-boards/sead/sead_int.c
@@ -98,7 +98,7 @@ static inline unsigned int irq_ffs(unsigned int pending)
  * then we just return, if multiple IRQs are pending then we will just take
  * another exception, big deal.
  */
-asmlinkage void plat_irq_dispatch(struct pt_regs *regs)
+asmlinkage void plat_irq_dispatch(void)
 {
         unsigned int pending = read_c0_cause() & read_c0_status() & ST0_IM;
         int irq;
@@ -106,7 +106,7 @@ asmlinkage void plat_irq_dispatch(struct pt_regs *regs)
         irq = irq_ffs(pending);
 
         if (irq >= 0)
-                do_IRQ(MIPSCPU_INT_BASE + irq, regs);
+                do_IRQ(MIPSCPU_INT_BASE + irq);
         else
                 spurious_interrupt(regs);
 }
diff --git a/arch/mips/mips-boards/sim/sim_int.c b/arch/mips/mips-boards/sim/sim_int.c
index 2c15c8efec4e..2ce449dce6f2 100644
--- a/arch/mips/mips-boards/sim/sim_int.c
+++ b/arch/mips/mips-boards/sim/sim_int.c
@@ -71,12 +71,7 @@ static inline unsigned int irq_ffs(unsigned int pending)
 #endif
 }
 
-static inline void sim_hw0_irqdispatch(struct pt_regs *regs)
-{
-        do_IRQ(2, regs);
-}
-
-asmlinkage void plat_irq_dispatch(struct pt_regs *regs)
+asmlinkage void plat_irq_dispatch(void)
 {
         unsigned int pending = read_c0_cause() & read_c0_status() & ST0_IM;
         int irq;
@@ -84,9 +79,9 @@ asmlinkage void plat_irq_dispatch(struct pt_regs *regs)
         irq = irq_ffs(pending);
 
         if (irq > 0)
-                do_IRQ(MIPSCPU_INT_BASE + irq, regs);
+                do_IRQ(MIPSCPU_INT_BASE + irq);
         else
-                spurious_interrupt(regs);
+                spurious_interrupt();
 }
 
 void __init arch_init_irq(void)
diff --git a/arch/mips/mips-boards/sim/sim_time.c b/arch/mips/mips-boards/sim/sim_time.c
index 230929ecd57f..c566b9bd0427 100644
--- a/arch/mips/mips-boards/sim/sim_time.c
+++ b/arch/mips/mips-boards/sim/sim_time.c
@@ -15,7 +15,6 @@
 #include <linux/mc146818rtc.h>
 #include <linux/timex.h>
 #include <asm/mipsregs.h>
-#include <asm/ptrace.h>
 #include <asm/hardirq.h>
 #include <asm/irq.h>
 #include <asm/div64.h>
@@ -33,7 +32,7 @@
 
 unsigned long cpu_khz;
 
-irqreturn_t sim_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+irqreturn_t sim_timer_interrupt(int irq, void *dev_id)
 {
 #ifdef CONFIG_SMP
         int cpu = smp_processor_id();
@@ -44,7 +43,7 @@ irqreturn_t sim_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
          */
 #ifndef CONFIG_MIPS_MT_SMTC
         if (cpu == 0) {
-                timer_interrupt(irq, dev_id, regs);
+                timer_interrupt(irq, dev_id);
         }
         else {
                 /* Everyone else needs to reset the timer int here as
@@ -84,7 +83,7 @@ irqreturn_t sim_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
         irq_enable_hazard();
         evpe(vpflags);
 
-        if(cpu_data[cpu].vpe_id == 0) timer_interrupt(irq, dev_id, regs);
+        if(cpu_data[cpu].vpe_id == 0) timer_interrupt(irq, dev_id);
         else write_c0_compare (read_c0_count() + ( mips_hpt_frequency/HZ));
         smtc_timer_broadcast(cpu_data[cpu].vpe_id);
 
@@ -93,10 +92,10 @@ irqreturn_t sim_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
         /*
          * every CPU should do profiling and process accounting
          */
-        local_timer_interrupt (irq, dev_id, regs);
+        local_timer_interrupt (irq, dev_id);
         return IRQ_HANDLED;
 #else
-        return timer_interrupt (irq, dev_id, regs);
+        return timer_interrupt (irq, dev_id);
 #endif
 }
 
@@ -177,9 +176,9 @@ void __init sim_time_init(void)
 
 static int mips_cpu_timer_irq;
 
-static void mips_timer_dispatch (struct pt_regs *regs)
+static void mips_timer_dispatch(void)
 {
-        do_IRQ (mips_cpu_timer_irq, regs);
+        do_IRQ(mips_cpu_timer_irq);
 }
 
 
diff --git a/arch/mips/momentum/jaguar_atx/irq.c b/arch/mips/momentum/jaguar_atx/irq.c
index f9067469a656..2efb25aa1aed 100644
--- a/arch/mips/momentum/jaguar_atx/irq.c
+++ b/arch/mips/momentum/jaguar_atx/irq.c
@@ -40,33 +40,33 @@
 #include <asm/mipsregs.h>
 #include <asm/time.h>
 
-asmlinkage void plat_irq_dispatch(struct pt_regs *regs)
+asmlinkage void plat_irq_dispatch(void)
 {
         unsigned int pending = read_c0_cause() & read_c0_status();
 
         if (pending & STATUSF_IP0)
-                do_IRQ(0, regs);
+                do_IRQ(0);
         else if (pending & STATUSF_IP1)
-                do_IRQ(1, regs);
+                do_IRQ(1);
         else if (pending & STATUSF_IP2)
-                do_IRQ(2, regs);
+                do_IRQ(2);
         else if (pending & STATUSF_IP3)
-                do_IRQ(3, regs);
+                do_IRQ(3);
         else if (pending & STATUSF_IP4)
-                do_IRQ(4, regs);
+                do_IRQ(4);
         else if (pending & STATUSF_IP5)
-                do_IRQ(5, regs);
+                do_IRQ(5);
         else if (pending & STATUSF_IP6)
-                do_IRQ(6, regs);
+                do_IRQ(6);
         else if (pending & STATUSF_IP7)
-                ll_timer_interrupt(7, regs);
+                ll_timer_interrupt(7);
         else {
                 /*
                  * Now look at the extended interrupts
                  */
                 pending = (read_c0_cause() & (read_c0_intcontrol() << 8)) >> 16;
                 if (pending & STATUSF_IP8)
-                        ll_mv64340_irq(regs);
+                        ll_mv64340_irq();
         }
 }
 
diff --git a/arch/mips/momentum/jaguar_atx/setup.c b/arch/mips/momentum/jaguar_atx/setup.c
index e6fe2992227d..5a510142b978 100644
--- a/arch/mips/momentum/jaguar_atx/setup.c
+++ b/arch/mips/momentum/jaguar_atx/setup.c
@@ -62,7 +62,6 @@
 #include <asm/io.h>
 #include <asm/irq.h>
 #include <asm/processor.h>
-#include <asm/ptrace.h>
 #include <asm/reboot.h>
 #include <asm/tlbflush.h>
 
diff --git a/arch/mips/momentum/ocelot_3/irq.c b/arch/mips/momentum/ocelot_3/irq.c
index 793782a9c195..cea0e5deb80e 100644
--- a/arch/mips/momentum/ocelot_3/irq.c
+++ b/arch/mips/momentum/ocelot_3/irq.c
@@ -75,26 +75,26 @@ void __init arch_init_irq(void)
 
 }
 
-asmlinkage void plat_irq_dispatch(struct pt_regs *regs)
+asmlinkage void plat_irq_dispatch(void)
 {
         unsigned int pending = read_c0_cause() & read_c0_status();
 
         if (pending & STATUSF_IP0)
-                do_IRQ(0, regs);
+                do_IRQ(0);
         else if (pending & STATUSF_IP1)
-                do_IRQ(1, regs);
+                do_IRQ(1);
         else if (pending & STATUSF_IP2)
-                do_IRQ(2, regs);
+                do_IRQ(2);
         else if (pending & STATUSF_IP3)
-                do_IRQ(3, regs);
+                do_IRQ(3);
         else if (pending & STATUSF_IP4)
-                do_IRQ(4, regs);
+                do_IRQ(4);
         else if (pending & STATUSF_IP5)
-                do_IRQ(5, regs);
+                do_IRQ(5);
         else if (pending & STATUSF_IP6)
-                do_IRQ(6, regs);
+                do_IRQ(6);
         else if (pending & STATUSF_IP7)
-                do_IRQ(7, regs);
+                do_IRQ(7);
         else {
                 /*
                  * Now look at the extended interrupts
@@ -102,8 +102,8 @@ asmlinkage void plat_irq_dispatch(struct pt_regs *regs)
                 pending = (read_c0_cause() & (read_c0_intcontrol() << 8)) >> 16;
 
                 if (pending & STATUSF_IP8)
-                        ll_mv64340_irq(regs);
+                        ll_mv64340_irq();
                 else
-                        spurious_interrupt(regs);
+                        spurious_interrupt();
         }
 }
diff --git a/arch/mips/momentum/ocelot_3/setup.c b/arch/mips/momentum/ocelot_3/setup.c
index 435d0787329e..7d74f8c54129 100644
--- a/arch/mips/momentum/ocelot_3/setup.c
+++ b/arch/mips/momentum/ocelot_3/setup.c
@@ -67,7 +67,6 @@
 #include <asm/irq.h>
 #include <asm/pci.h>
 #include <asm/processor.h>
-#include <asm/ptrace.h>
 #include <asm/reboot.h>
 #include <asm/mc146818rtc.h>
 #include <asm/tlbflush.h>
diff --git a/arch/mips/momentum/ocelot_c/cpci-irq.c b/arch/mips/momentum/ocelot_c/cpci-irq.c
index a5dc230520df..47e3fa32b075 100644
--- a/arch/mips/momentum/ocelot_c/cpci-irq.c
+++ b/arch/mips/momentum/ocelot_c/cpci-irq.c
@@ -21,7 +21,6 @@
 #include <linux/interrupt.h>
 #include <linux/irq.h>
 #include <linux/kernel.h>
-#include <asm/ptrace.h>
 #include <linux/sched.h>
 #include <linux/kernel_stat.h>
 #include <asm/io.h>
@@ -112,7 +111,7 @@ static void end_cpci_irq(unsigned int irq)
  * Interrupt handler for interrupts coming from the FPGA chip.
  * It could be built in ethernet ports etc...
  */
-void ll_cpci_irq(struct pt_regs *regs)
+void ll_cpci_irq(void)
 {
         unsigned int irq_src, irq_mask;
 
@@ -123,7 +122,7 @@ void ll_cpci_irq(struct pt_regs *regs)
         /* mask for just the interrupts we want */
         irq_src &= ~irq_mask;
 
-        do_IRQ(ls1bit8(irq_src) + CPCI_IRQ_BASE, regs);
+        do_IRQ(ls1bit8(irq_src) + CPCI_IRQ_BASE);
 }
 
 #define shutdown_cpci_irq       disable_cpci_irq
diff --git a/arch/mips/momentum/ocelot_c/irq.c b/arch/mips/momentum/ocelot_c/irq.c
index 9d44ae1e156b..ea65223a6d2c 100644
--- a/arch/mips/momentum/ocelot_c/irq.c
+++ b/arch/mips/momentum/ocelot_c/irq.c
@@ -59,31 +59,31 @@ static struct irqaction cascade_mv64340 = {
         no_action, IRQF_DISABLED, CPU_MASK_NONE, "cascade via MV64340", NULL, NULL
 };
 
-extern void ll_uart_irq(struct pt_regs *regs);
-extern void ll_cpci_irq(struct pt_regs *regs);
+extern void ll_uart_irq(void);
+extern void ll_cpci_irq(void);
 
-asmlinkage void plat_irq_dispatch(struct pt_regs *regs)
+asmlinkage void plat_irq_dispatch(void)
 {
         unsigned int pending = read_c0_cause() & read_c0_status();
 
         if (pending & STATUSF_IP0)
-                do_IRQ(0, regs);
+                do_IRQ(0);
         else if (pending & STATUSF_IP1)
-                do_IRQ(1, regs);
+                do_IRQ(1);
         else if (pending & STATUSF_IP2)
-                do_IRQ(2, regs);
+                do_IRQ(2);
         else if (pending & STATUSF_IP3)
-                ll_uart_irq(regs);
+                ll_uart_irq();
         else if (pending & STATUSF_IP4)
-                do_IRQ(4, regs);
+                do_IRQ(4);
         else if (pending & STATUSF_IP5)
-                ll_cpci_irq(regs);
+                ll_cpci_irq();
         else if (pending & STATUSF_IP6)
-                ll_mv64340_irq(regs);
+                ll_mv64340_irq();
         else if (pending & STATUSF_IP7)
-                do_IRQ(7, regs);
+                do_IRQ(7);
         else
-                spurious_interrupt(regs);
+                spurious_interrupt();
 }
 
 void __init arch_init_irq(void)
diff --git a/arch/mips/momentum/ocelot_c/setup.c b/arch/mips/momentum/ocelot_c/setup.c
index 36f570ecc6fb..9c0c462af650 100644
--- a/arch/mips/momentum/ocelot_c/setup.c
+++ b/arch/mips/momentum/ocelot_c/setup.c
@@ -62,7 +62,6 @@
 #include <asm/irq.h>
 #include <asm/pci.h>
 #include <asm/processor.h>
-#include <asm/ptrace.h>
 #include <asm/reboot.h>
 #include <asm/marvell.h>
 #include <linux/bootmem.h>
diff --git a/arch/mips/momentum/ocelot_c/uart-irq.c b/arch/mips/momentum/ocelot_c/uart-irq.c
index 9f33d8f1d826..510257dc205a 100644
--- a/arch/mips/momentum/ocelot_c/uart-irq.c
+++ b/arch/mips/momentum/ocelot_c/uart-irq.c
@@ -16,7 +16,6 @@
 #include <linux/interrupt.h>
 #include <linux/irq.h>
 #include <linux/kernel.h>
-#include <asm/ptrace.h>
 #include <linux/sched.h>
 #include <linux/kernel_stat.h>
 #include <asm/io.h>
@@ -105,7 +104,7 @@ static void end_uart_irq(unsigned int irq)
 /*
  * Interrupt handler for interrupts coming from the FPGA chip.
  */
-void ll_uart_irq(struct pt_regs *regs)
+void ll_uart_irq(void)
 {
         unsigned int irq_src, irq_mask;
 
@@ -116,7 +115,7 @@ void ll_uart_irq(struct pt_regs *regs)
         /* mask for just the interrupts we want */
         irq_src &= ~irq_mask;
 
-        do_IRQ(ls1bit8(irq_src) + 74, regs);
+        do_IRQ(ls1bit8(irq_src) + 74);
 }
 
 #define shutdown_uart_irq       disable_uart_irq
diff --git a/arch/mips/momentum/ocelot_g/gt-irq.c b/arch/mips/momentum/ocelot_g/gt-irq.c
index 6cd87cf0195a..7b5cc6648f7e 100644
--- a/arch/mips/momentum/ocelot_g/gt-irq.c
+++ b/arch/mips/momentum/ocelot_g/gt-irq.c
@@ -14,7 +14,6 @@
 #include <linux/module.h>
 #include <linux/interrupt.h>
 #include <linux/kernel.h>
-#include <asm/ptrace.h>
 #include <linux/sched.h>
 #include <linux/kernel_stat.h>
 #include <asm/gt64240.h>
@@ -108,7 +107,7 @@ int disable_galileo_irq(int int_cause, int bit_num)
  * we keep this particular structure in the function.
  */
 
-static irqreturn_t gt64240_p0int_irq(int irq, void *dev, struct pt_regs *regs)
+static irqreturn_t gt64240_p0int_irq(int irq, void *dev)
 {
         uint32_t irq_src, irq_src_mask;
         int handled;
@@ -135,7 +134,7 @@ static irqreturn_t gt64240_p0int_irq(int irq, void *dev, struct pt_regs *regs)
                 /* handle the timer call */
                 do_timer(1);
 #ifndef CONFIG_SMP
-                update_process_times(user_mode(regs));
+                update_process_times(user_mode(get_irq_regs()));
 #endif
         }
 
diff --git a/arch/mips/momentum/ocelot_g/irq.c b/arch/mips/momentum/ocelot_g/irq.c
index 7a4a419804f1..da46524e87cb 100644
--- a/arch/mips/momentum/ocelot_g/irq.c
+++ b/arch/mips/momentum/ocelot_g/irq.c
@@ -48,22 +48,22 @@
 #include <asm/mipsregs.h>
 #include <asm/system.h>
 
-asmlinkage void plat_irq_dispatch(struct pt_regs *regs)
+asmlinkage void plat_irq_dispatch(void)
 {
         unsigned int pending = read_c0_cause() & read_c0_status();
 
         if (pending & STATUSF_IP2)
-                do_IRQ(2, regs);
+                do_IRQ(2);
         else if (pending & STATUSF_IP3)
-                do_IRQ(3, regs);
+                do_IRQ(3);
         else if (pending & STATUSF_IP4)
-                do_IRQ(4, regs);
+                do_IRQ(4);
         else if (pending & STATUSF_IP5)
-                do_IRQ(5, regs);
+                do_IRQ(5);
         else if (pending & STATUSF_IP6)
-                do_IRQ(6, regs);
+                do_IRQ(6);
         else if (pending & STATUSF_IP7)
-                do_IRQ(7, regs);
+                do_IRQ(7);
         else {
                 /*
                  * Now look at the extended interrupts
@@ -71,15 +71,15 @@ asmlinkage void plat_irq_dispatch(struct pt_regs *regs)
                 pending = (read_c0_cause() & (read_c0_intcontrol() << 8)) >> 16;
 
                 if (pending & STATUSF_IP8)
-                        do_IRQ(8, regs);
+                        do_IRQ(8);
                 else if (pending & STATUSF_IP9)
-                        do_IRQ(9, regs);
+                        do_IRQ(9);
                 else if (pending & STATUSF_IP10)
-                        do_IRQ(10, regs);
+                        do_IRQ(10);
                 else if (pending & STATUSF_IP11)
-                        do_IRQ(11, regs);
+                        do_IRQ(11);
                 else
-                        spurious_interrupt(regs);
+                        spurious_interrupt();
         }
 }
 
diff --git a/arch/mips/momentum/ocelot_g/setup.c b/arch/mips/momentum/ocelot_g/setup.c
index c580b1de33bc..56ec47039c16 100644
--- a/arch/mips/momentum/ocelot_g/setup.c
+++ b/arch/mips/momentum/ocelot_g/setup.c
@@ -58,7 +58,6 @@
 #include <asm/irq.h>
 #include <asm/pci.h>
 #include <asm/processor.h>
-#include <asm/ptrace.h>
 #include <asm/reboot.h>
 #include <linux/bootmem.h>
 
diff --git a/arch/mips/oprofile/op_impl.h b/arch/mips/oprofile/op_impl.h
index 5cfce7d87a4d..354e54496406 100644
--- a/arch/mips/oprofile/op_impl.h
+++ b/arch/mips/oprofile/op_impl.h
@@ -12,8 +12,8 @@
 
 struct pt_regs;
 
-extern int null_perf_irq(struct pt_regs *regs);
-extern int (*perf_irq)(struct pt_regs *regs);
+extern int null_perf_irq(void);
+extern int (*perf_irq)(void);
 
 /* Per-counter configuration as set via oprofilefs.  */
 struct op_counter_config {
diff --git a/arch/mips/oprofile/op_model_mipsxx.c b/arch/mips/oprofile/op_model_mipsxx.c
index a175d673540f..dd0aec9c3ce1 100644
--- a/arch/mips/oprofile/op_model_mipsxx.c
+++ b/arch/mips/oprofile/op_model_mipsxx.c
@@ -3,12 +3,13 @@
  * License.  See the file "COPYING" in the main directory of this archive
  * for more details.
  *
- * Copyright (C) 2004, 2005 by Ralf Baechle
+ * Copyright (C) 2004, 05, 06 by Ralf Baechle
  * Copyright (C) 2005 by MIPS Technologies, Inc.
  */
 #include <linux/oprofile.h>
 #include <linux/interrupt.h>
 #include <linux/smp.h>
+#include <asm/irq_regs.h>
 
 #include "op_impl.h"
 
@@ -170,7 +171,7 @@ static void mipsxx_cpu_stop(void *args)
         }
 }
 
-static int mipsxx_perfcount_handler(struct pt_regs *regs)
+static int mipsxx_perfcount_handler(void)
 {
         unsigned int counters = op_model_mipsxx_ops.num_counters;
         unsigned int control;
@@ -184,7 +185,7 @@ static int mipsxx_perfcount_handler(struct pt_regs *regs)
                 counter = r_c0_perfcntr ## n();                         \
                 if ((control & M_PERFCTL_INTERRUPT_ENABLE) &&           \
                     (counter & M_COUNTER_OVERFLOW)) {                   \
-                        oprofile_add_sample(regs, n);                   \
+                        oprofile_add_sample(get_irq_regs(), n);         \
                         w_c0_perfcntr ## n(reg.counter[n]);             \
                         handled = 1;                                    \
                 }
diff --git a/arch/mips/pci/pci-ip32.c b/arch/mips/pci/pci-ip32.c
index 17c7932cf0ae..618ea7dbc474 100644
--- a/arch/mips/pci/pci-ip32.c
+++ b/arch/mips/pci/pci-ip32.c
@@ -22,7 +22,7 @@
  * registered on the bridge error irq.  It's conceivable that some of these
  * conditions warrant a panic.  Anybody care to say which ones?
  */
-static irqreturn_t macepci_error(int irq, void *dev, struct pt_regs *regs)
+static irqreturn_t macepci_error(int irq, void *dev)
 {
         char s;
         unsigned int flags = mace->pci.error;
diff --git a/arch/mips/philips/pnx8550/common/int.c b/arch/mips/philips/pnx8550/common/int.c
index 3c93512be1ec..710611615ca2 100644
--- a/arch/mips/philips/pnx8550/common/int.c
+++ b/arch/mips/philips/pnx8550/common/int.c
@@ -23,6 +23,7 @@
  *  59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
  *
  */
+#include <linux/compiler.h>
 #include <linux/init.h>
 #include <linux/irq.h>
 #include <linux/sched.h>
@@ -52,7 +53,7 @@ static char gic_prio[PNX8550_INT_GIC_TOTINT] = {
         1                       //  70
 };
 
-static void hw0_irqdispatch(int irq, struct pt_regs *regs)
+static void hw0_irqdispatch(int irq)
 {
         /* find out which interrupt */
         irq = PNX8550_GIC_VECTOR_0 >> 3;
@@ -61,42 +62,39 @@ static void hw0_irqdispatch(int irq, struct pt_regs *regs)
                 printk("hw0_irqdispatch: irq 0, spurious interrupt?\n");
                 return;
         }
-        do_IRQ(PNX8550_INT_GIC_MIN + irq, regs);
+        do_IRQ(PNX8550_INT_GIC_MIN + irq);
 }
 
 
-static void timer_irqdispatch(int irq, struct pt_regs *regs)
+static void timer_irqdispatch(int irq)
 {
         irq = (0x01c0 & read_c0_config7()) >> 6;
 
-        if (irq == 0) {
+        if (unlikely(irq == 0)) {
                 printk("timer_irqdispatch: irq 0, spurious interrupt?\n");
                 return;
         }
 
-        if (irq & 0x1) {
-                do_IRQ(PNX8550_INT_TIMER1, regs);
-        }
-        if (irq & 0x2) {
-                do_IRQ(PNX8550_INT_TIMER2, regs);
-        }
-        if (irq & 0x4) {
-                do_IRQ(PNX8550_INT_TIMER3, regs);
-        }
+        if (irq & 0x1)
+                do_IRQ(PNX8550_INT_TIMER1);
+        if (irq & 0x2)
+                do_IRQ(PNX8550_INT_TIMER2);
+        if (irq & 0x4)
+                do_IRQ(PNX8550_INT_TIMER3);
 }
 
-asmlinkage void plat_irq_dispatch(struct pt_regs *regs)
+asmlinkage void plat_irq_dispatch(void)
 {
         unsigned int pending = read_c0_status() & read_c0_cause();
 
         if (pending & STATUSF_IP2)
-                hw0_irqdispatch(2, regs);
+                hw0_irqdispatch(2);
         else if (pending & STATUSF_IP7) {
                 if (read_c0_config7() & 0x01c0)
-                        timer_irqdispatch(7, regs);
+                        timer_irqdispatch(7);
         }
 
-        spurious_interrupt(regs);
+        spurious_interrupt();
 }
 
 static inline void modify_cp0_intmask(unsigned clr_mask, unsigned set_mask)
diff --git a/arch/mips/pmc-sierra/yosemite/irq.c b/arch/mips/pmc-sierra/yosemite/irq.c
index b91d0aa3b7ed..adb048527e76 100644
--- a/arch/mips/pmc-sierra/yosemite/irq.c
+++ b/arch/mips/pmc-sierra/yosemite/irq.c
@@ -56,15 +56,13 @@
 #define HYPERTRANSPORT_INTC     0x7a            /* INTC# */
 #define HYPERTRANSPORT_INTD     0x7b            /* INTD# */
 
-extern void jaguar_mailbox_irq(struct pt_regs *);
-
 /*
  * Handle hypertransport & SMP interrupts. The interrupt lines are scarce.
  * For interprocessor interrupts, the best thing to do is to use the INTMSG
  * register. We use the same external interrupt line, i.e. INTB3 and monitor
  * another status bit
  */
-asmlinkage void ll_ht_smp_irq_handler(int irq, struct pt_regs *regs)
+static void ll_ht_smp_irq_handler(int irq)
 {
         u32 status = OCD_READ(RM9000x2_OCD_INTP0STATUS4);
 
@@ -107,50 +105,35 @@ asmlinkage void ll_ht_smp_irq_handler(int irq, struct pt_regs *regs)
         }
 #endif /* CONFIG_HT_LEVEL_TRIGGER */
 
-        do_IRQ(irq, regs);
-}
-
-asmlinkage void do_extended_irq(struct pt_regs *regs)
-{
-        unsigned int intcontrol = read_c0_intcontrol();
-        unsigned int cause = read_c0_cause();
-        unsigned int status = read_c0_status();
-        unsigned int pending_sr, pending_ic;
-
-        pending_sr = status & cause & 0xff00;
-        pending_ic = (cause >> 8) & intcontrol & 0xff00;
-
-        if (pending_ic & (1 << 13))
-                do_IRQ(13, regs);
-
+        do_IRQ(irq);
 }
 
-asmlinkage void plat_irq_dispatch(struct pt_regs *regs)
+asmlinkage void plat_irq_dispatch(void)
 {
         unsigned int cause = read_c0_cause();
         unsigned int status = read_c0_status();
         unsigned int pending = cause & status;
 
         if (pending & STATUSF_IP7) {
-                do_IRQ(7, regs);
+                do_IRQ(7);
         } else if (pending & STATUSF_IP2) {
 #ifdef CONFIG_HYPERTRANSPORT
-                ll_ht_smp_irq_handler(2, regs);
+                ll_ht_smp_irq_handler(2);
 #else
-                do_IRQ(2, regs);
+                do_IRQ(2);
 #endif
         } else if (pending & STATUSF_IP3) {
-                do_IRQ(3, regs);
+                do_IRQ(3);
         } else if (pending & STATUSF_IP4) {
-                do_IRQ(4, regs);
+                do_IRQ(4);
         } else if (pending & STATUSF_IP5) {
 #ifdef CONFIG_SMP
-                titan_mailbox_irq(regs);
+                titan_mailbox_irq();
 #else
-                do_IRQ(5, regs);
+                do_IRQ(5);
 #endif
         } else if (pending & STATUSF_IP6) {
-                do_IRQ(4, regs);
+                do_IRQ(4);
         }
 }
 
@@ -178,18 +161,3 @@ void __init arch_init_irq(void)
         register_gdb_console();
 #endif
 }
-
-#ifdef CONFIG_KGDB
-/*
- * The 16550 DUART has two ports, but is allocated one IRQ
- * for the serial console. Hence, a generic framework for
- * serial IRQ routing in place. Currently, just calls the
- * do_IRQ fuction. But, going in the future, need to check
- * DUART registers for channel A and B, then decide the
- * appropriate action
- */
-asmlinkage void yosemite_kgdb_irq(int irq, struct pt_regs *regs)
-{
-        do_IRQ(irq, regs);
-}
-#endif
diff --git a/arch/mips/pmc-sierra/yosemite/setup.c b/arch/mips/pmc-sierra/yosemite/setup.c
index 0a6ee8e5eec2..1b9b0d396d3e 100644
--- a/arch/mips/pmc-sierra/yosemite/setup.c
+++ b/arch/mips/pmc-sierra/yosemite/setup.c
@@ -46,7 +46,6 @@
 #include <asm/io.h>
 #include <asm/irq.h>
 #include <asm/processor.h>
-#include <asm/ptrace.h>
 #include <asm/reboot.h>
 #include <asm/serial.h>
 #include <asm/titan_dep.h>
diff --git a/arch/mips/pmc-sierra/yosemite/smp.c b/arch/mips/pmc-sierra/yosemite/smp.c
index c197311e15d3..65fa3a23ea5e 100644
--- a/arch/mips/pmc-sierra/yosemite/smp.c
+++ b/arch/mips/pmc-sierra/yosemite/smp.c
@@ -110,7 +110,7 @@ void prom_smp_finish(void)
 {
 }
 
-asmlinkage void titan_mailbox_irq(struct pt_regs *regs)
+asmlinkage void titan_mailbox_irq(void)
 {
         int cpu = smp_processor_id();
         unsigned long status;
diff --git a/arch/mips/qemu/q-irq.c b/arch/mips/qemu/q-irq.c
index 3352374c4c7d..f5ea2fe10f14 100644
--- a/arch/mips/qemu/q-irq.c
+++ b/arch/mips/qemu/q-irq.c
@@ -9,19 +9,19 @@
 
 extern asmlinkage void qemu_handle_int(void);
 
-asmlinkage void plat_irq_dispatch(struct pt_regs *regs)
+asmlinkage void plat_irq_dispatch(void)
 {
         unsigned int pending = read_c0_status() & read_c0_cause();
 
         if (pending & 0x8000) {
-                ll_timer_interrupt(Q_COUNT_COMPARE_IRQ, regs);
+                ll_timer_interrupt(Q_COUNT_COMPARE_IRQ);
                 return;
         }
         if (pending & 0x0400) {
                 int irq = i8259_irq();
 
                 if (likely(irq >= 0))
-                        do_IRQ(irq, regs);
+                        do_IRQ(irq);
 
                 return;
         }
diff --git a/arch/mips/sgi-ip22/ip22-berr.c b/arch/mips/sgi-ip22/ip22-berr.c
index a28dc7800072..de6a0cc32fea 100644
--- a/arch/mips/sgi-ip22/ip22-berr.c
+++ b/arch/mips/sgi-ip22/ip22-berr.c
@@ -12,6 +12,7 @@
 #include <asm/system.h>
 #include <asm/traps.h>
 #include <asm/branch.h>
+#include <asm/irq_regs.h>
 #include <asm/sgi/mc.h>
 #include <asm/sgi/hpc3.h>
 #include <asm/sgi/ioc.h>
@@ -85,9 +86,10 @@ static void print_buserr(void)
  * and then clear the interrupt when this happens.
  */
 
-void ip22_be_interrupt(int irq, struct pt_regs *regs)
+void ip22_be_interrupt(int irq)
 {
         const int field = 2 * sizeof(unsigned long);
+        const struct pt_regs *regs = get_irq_regs();
 
         save_and_clear_buserr();
         print_buserr();
diff --git a/arch/mips/sgi-ip22/ip22-eisa.c b/arch/mips/sgi-ip22/ip22-eisa.c
index ee0514a29922..0d18ed47c47a 100644
--- a/arch/mips/sgi-ip22/ip22-eisa.c
+++ b/arch/mips/sgi-ip22/ip22-eisa.c
@@ -70,7 +70,7 @@ static char __init *decode_eisa_sig(unsigned long addr)
         return sig_str;
 }
 
-static irqreturn_t ip22_eisa_intr(int irq, void *dev_id, struct pt_regs *regs)
+static irqreturn_t ip22_eisa_intr(int irq, void *dev_id)
 {
         u8 eisa_irq;
         u8 dma1, dma2;
@@ -80,7 +80,7 @@ static irqreturn_t ip22_eisa_intr(int irq, void *dev_id, struct pt_regs *regs)
         dma2 = inb(EISA_DMA2_STATUS);
 
         if (eisa_irq < EISA_MAX_IRQ) {
-                do_IRQ(eisa_irq, regs);
+                do_IRQ(eisa_irq);
                 return IRQ_HANDLED;
         }
 
@@ -89,6 +89,7 @@ static irqreturn_t ip22_eisa_intr(int irq, void *dev_id, struct pt_regs *regs)
 
         outb(0x20, EISA_INT2_CTRL);
         outb(0x20, EISA_INT1_CTRL);
+
         return IRQ_NONE;
 }
 
diff --git a/arch/mips/sgi-ip22/ip22-int.c b/arch/mips/sgi-ip22/ip22-int.c
index f66026e5d64b..af518898eaa1 100644
--- a/arch/mips/sgi-ip22/ip22-int.c
+++ b/arch/mips/sgi-ip22/ip22-int.c
@@ -222,7 +222,7 @@ static struct irq_chip ip22_local3_irq_type = {
         .end            = end_local3_irq,
 };
 
-static void indy_local0_irqdispatch(struct pt_regs *regs)
+static void indy_local0_irqdispatch(void)
 {
         u8 mask = sgint->istat0 & sgint->imask0;
         u8 mask2;
@@ -236,11 +236,10 @@ static void indy_local0_irqdispatch(struct pt_regs *regs)
 
         /* if irq == 0, then the interrupt has already been cleared */
         if (irq)
-                do_IRQ(irq, regs);
-        return;
+                do_IRQ(irq);
 }
 
-static void indy_local1_irqdispatch(struct pt_regs *regs)
+static void indy_local1_irqdispatch(void)
 {
         u8 mask = sgint->istat1 & sgint->imask1;
         u8 mask2;
@@ -254,19 +253,18 @@ static void indy_local1_irqdispatch(struct pt_regs *regs)
 
         /* if irq == 0, then the interrupt has already been cleared */
         if (irq)
-                do_IRQ(irq, regs);
-        return;
+                do_IRQ(irq);
 }
 
-extern void ip22_be_interrupt(int irq, struct pt_regs *regs);
+extern void ip22_be_interrupt(int irq);
 
-static void indy_buserror_irq(struct pt_regs *regs)
+static void indy_buserror_irq(void)
 {
         int irq = SGI_BUSERR_IRQ;
 
         irq_enter();
         kstat_this_cpu.irqs[irq]++;
-        ip22_be_interrupt(irq, regs);
+        ip22_be_interrupt(irq);
         irq_exit();
 }
 
@@ -305,8 +303,8 @@ static struct irqaction map1_cascade = {
 #define SGI_INTERRUPTS  SGINT_LOCAL3
 #endif
 
-extern void indy_r4k_timer_interrupt(struct pt_regs *regs);
-extern void indy_8254timer_irq(struct pt_regs *regs);
+extern void indy_r4k_timer_interrupt(void);
+extern void indy_8254timer_irq(void);
 
 /*
  * IRQs on the INDY look basically (barring software IRQs which we don't use
@@ -336,7 +334,7 @@ extern void indy_8254timer_irq(struct pt_regs *regs);
  * another exception, big deal.
  */
 
-asmlinkage void plat_irq_dispatch(struct pt_regs *regs)
+asmlinkage void plat_irq_dispatch(void)
 {
         unsigned int pending = read_c0_cause();
 
@@ -344,15 +342,15 @@ asmlinkage void plat_irq_dispatch(struct pt_regs *regs)
          * First we check for r4k counter/timer IRQ.
          */
         if (pending & CAUSEF_IP7)
-                indy_r4k_timer_interrupt(regs);
+                indy_r4k_timer_interrupt();
         else if (pending & CAUSEF_IP2)
-                indy_local0_irqdispatch(regs);
+                indy_local0_irqdispatch();
         else if (pending & CAUSEF_IP3)
-                indy_local1_irqdispatch(regs);
+                indy_local1_irqdispatch();
         else if (pending & CAUSEF_IP6)
-                indy_buserror_irq(regs);
+                indy_buserror_irq();
         else if (pending & (CAUSEF_IP4 | CAUSEF_IP5))
-                indy_8254timer_irq(regs);
+                indy_8254timer_irq();
 }
 
 extern void mips_cpu_irq_init(unsigned int irq_base);
diff --git a/arch/mips/sgi-ip22/ip22-reset.c b/arch/mips/sgi-ip22/ip22-reset.c
index 7a941ecff3bb..66df5ac8f089 100644
--- a/arch/mips/sgi-ip22/ip22-reset.c
+++ b/arch/mips/sgi-ip22/ip22-reset.c
@@ -169,7 +169,7 @@ static inline void volume_down_button(unsigned long data)
         }
 }
 
-static irqreturn_t panel_int(int irq, void *dev_id, struct pt_regs *regs)
+static irqreturn_t panel_int(int irq, void *dev_id)
 {
         unsigned int buttons;
 
diff --git a/arch/mips/sgi-ip22/ip22-time.c b/arch/mips/sgi-ip22/ip22-time.c
index 0e061890f797..205554734099 100644
--- a/arch/mips/sgi-ip22/ip22-time.c
+++ b/arch/mips/sgi-ip22/ip22-time.c
@@ -175,7 +175,7 @@ static __init void indy_time_init(void)
 }
 
 /* Generic SGI handler for (spurious) 8254 interrupts */
-void indy_8254timer_irq(struct pt_regs *regs)
+void indy_8254timer_irq(void)
 {
         int irq = SGI_8254_0_IRQ;
         ULONG cnt;
@@ -189,13 +189,13 @@ void indy_8254timer_irq(struct pt_regs *regs)
         irq_exit();
 }
 
-void indy_r4k_timer_interrupt(struct pt_regs *regs)
+void indy_r4k_timer_interrupt(void)
 {
         int irq = SGI_TIMER_IRQ;
 
         irq_enter();
         kstat_this_cpu.irqs[irq]++;
-        timer_interrupt(irq, NULL, regs);
+        timer_interrupt(irq, NULL);
         irq_exit();
 }
 
diff --git a/arch/mips/sgi-ip27/ip27-irq.c b/arch/mips/sgi-ip27/ip27-irq.c
index 24a85372284f..f01ba1f90770 100644
--- a/arch/mips/sgi-ip27/ip27-irq.c
+++ b/arch/mips/sgi-ip27/ip27-irq.c
@@ -30,7 +30,6 @@
 #include <asm/mipsregs.h>
 #include <asm/system.h>
 
-#include <asm/ptrace.h>
 #include <asm/processor.h>
 #include <asm/pci/bridge.h>
 #include <asm/sn/addrs.h>
@@ -129,7 +128,7 @@ static int ms1bit(unsigned long x)
  * Kanoj 05.13.00
  */
 
-static void ip27_do_irq_mask0(struct pt_regs *regs)
+static void ip27_do_irq_mask0(void)
 {
         int irq, swlevel;
         hubreg_t pend0, mask0;
@@ -164,13 +163,13 @@ static void ip27_do_irq_mask0(struct pt_regs *regs)
                 struct slice_data *si = cpu_data[cpu].data;
 
                 irq = si->level_to_irq[swlevel];
-                do_IRQ(irq, regs);
+                do_IRQ(irq);
         }
 
         LOCAL_HUB_L(PI_INT_PEND0);
 }
 
-static void ip27_do_irq_mask1(struct pt_regs *regs)
+static void ip27_do_irq_mask1(void)
 {
         int irq, swlevel;
         hubreg_t pend1, mask1;
@@ -190,17 +189,17 @@ static void ip27_do_irq_mask1(struct pt_regs *regs)
         /* "map" swlevel to irq */
         irq = si->level_to_irq[swlevel];
         LOCAL_HUB_CLR_INTR(swlevel);
-        do_IRQ(irq, regs);
+        do_IRQ(irq);
 
         LOCAL_HUB_L(PI_INT_PEND1);
 }
 
-static void ip27_prof_timer(struct pt_regs *regs)
+static void ip27_prof_timer(void)
 {
         panic("CPU %d got a profiling interrupt", smp_processor_id());
 }
 
-static void ip27_hub_error(struct pt_regs *regs)
+static void ip27_hub_error(void)
 {
         panic("CPU %d got a hub error interrupt", smp_processor_id());
 }
@@ -418,22 +417,22 @@ int __devinit request_bridge_irq(struct bridge_controller *bc)
         return irq;
 }
 
-extern void ip27_rt_timer_interrupt(struct pt_regs *regs);
+extern void ip27_rt_timer_interrupt(void);
 
-asmlinkage void plat_irq_dispatch(struct pt_regs *regs)
+asmlinkage void plat_irq_dispatch(void)
 {
         unsigned long pending = read_c0_cause() & read_c0_status();
 
         if (pending & CAUSEF_IP4)
-                ip27_rt_timer_interrupt(regs);
+                ip27_rt_timer_interrupt();
         else if (pending & CAUSEF_IP2)  /* PI_INT_PEND_0 or CC_PEND_{A|B} */
-                ip27_do_irq_mask0(regs);
+                ip27_do_irq_mask0();
         else if (pending & CAUSEF_IP3)  /* PI_INT_PEND_1 */
-                ip27_do_irq_mask1(regs);
+                ip27_do_irq_mask1();
         else if (pending & CAUSEF_IP5)
-                ip27_prof_timer(regs);
+                ip27_prof_timer();
         else if (pending & CAUSEF_IP6)
-                ip27_hub_error(regs);
+                ip27_hub_error();
 }
 
 void __init arch_init_irq(void)
diff --git a/arch/mips/sgi-ip27/ip27-timer.c b/arch/mips/sgi-ip27/ip27-timer.c
index 257ce118e380..4e870fc4469b 100644
--- a/arch/mips/sgi-ip27/ip27-timer.c
+++ b/arch/mips/sgi-ip27/ip27-timer.c
@@ -89,7 +89,7 @@ static int set_rtc_mmss(unsigned long nowtime)
 
 static unsigned int rt_timer_irq;
 
-void ip27_rt_timer_interrupt(struct pt_regs *regs)
+void ip27_rt_timer_interrupt(void)
 {
         int cpu = smp_processor_id();
         int cpuA = cputoslice(cpu) == 0;
@@ -111,7 +111,7 @@ again:
         if (cpu == 0)
                 do_timer(1);
 
-        update_process_times(user_mode(regs));
+        update_process_times(user_mode(get_irq_regs()));
 
         /*
          * If we have an externally synchronized Linux clock, then update
diff --git a/arch/mips/sgi-ip32/crime.c b/arch/mips/sgi-ip32/crime.c
index 41b5eca1148c..bff508704d03 100644
--- a/arch/mips/sgi-ip32/crime.c
+++ b/arch/mips/sgi-ip32/crime.c
@@ -14,7 +14,6 @@
 #include <asm/bootinfo.h>
 #include <asm/io.h>
 #include <asm/mipsregs.h>
-#include <asm/ptrace.h>
 #include <asm/page.h>
 #include <asm/ip32/crime.h>
 #include <asm/ip32/mace.h>
@@ -40,8 +39,7 @@ void __init crime_init(void)
                 id, rev, field, (unsigned long) CRIME_BASE);
 }
 
-irqreturn_t
-crime_memerr_intr (unsigned int irq, void *dev_id, struct pt_regs *regs)
+irqreturn_t crime_memerr_intr(unsigned int irq, void *dev_id)
 {
         unsigned long stat, addr;
         int fatal = 0;
@@ -92,8 +90,7 @@ crime_memerr_intr (unsigned int irq, void *dev_id, struct pt_regs *regs)
         return IRQ_HANDLED;
 }
 
-irqreturn_t
-crime_cpuerr_intr (unsigned int irq, void *dev_id, struct pt_regs *regs)
+irqreturn_t crime_cpuerr_intr(unsigned int irq, void *dev_id)
 {
         unsigned long stat = crime->cpu_error_stat & CRIME_CPU_ERROR_MASK;
         unsigned long addr = crime->cpu_error_addr & CRIME_CPU_ERROR_ADDR_MASK;
diff --git a/arch/mips/sgi-ip32/ip32-irq.c b/arch/mips/sgi-ip32/ip32-irq.c
index c64a820373de..c9acadd0846b 100644
--- a/arch/mips/sgi-ip32/ip32-irq.c
+++ b/arch/mips/sgi-ip32/ip32-irq.c
@@ -120,10 +120,8 @@ static void inline flush_mace_bus(void)
 static DEFINE_SPINLOCK(ip32_irq_lock);
 
 /* Some initial interrupts to set up */
-extern irqreturn_t crime_memerr_intr (int irq, void *dev_id,
-                                      struct pt_regs *regs);
-extern irqreturn_t crime_cpuerr_intr (int irq, void *dev_id,
-                                      struct pt_regs *regs);
+extern irqreturn_t crime_memerr_intr(int irq, void *dev_id);
+extern irqreturn_t crime_cpuerr_intr(int irq, void *dev_id);
 
 struct irqaction memerr_irq = { crime_memerr_intr, IRQF_DISABLED,
                         CPU_MASK_NONE, "CRIME memory error", NULL, NULL };
@@ -479,7 +477,7 @@ static struct irq_chip ip32_mace_interrupt = {
         .end = end_mace_irq,
 };
 
-static void ip32_unknown_interrupt(struct pt_regs *regs)
+static void ip32_unknown_interrupt(void)
 {
         printk ("Unknown interrupt occurred!\n");
         printk ("cp0_status: %08x\n", read_c0_status());
@@ -492,7 +490,7 @@ static void ip32_unknown_interrupt(struct pt_regs *regs)
         printk ("MACE PCI control register: %08x\n", mace->pci.control);
 
         printk("Register dump:\n");
-        show_regs(regs);
+        show_regs(get_irq_regs());
 
         printk("Please mail this report to linux-mips@linux-mips.org\n");
         printk("Spinning...");
@@ -501,7 +499,7 @@ static void ip32_unknown_interrupt(struct pt_regs *regs)
 
 /* CRIME 1.1 appears to deliver all interrupts to this one pin. */
 /* change this to loop over all edge-triggered irqs, exception masked out ones */
-static void ip32_irq0(struct pt_regs *regs)
+static void ip32_irq0(void)
 {
         uint64_t crime_int;
         int irq = 0;
@@ -516,50 +514,50 @@ static void ip32_irq0(struct pt_regs *regs)
         }
         irq++;
         DBG("*irq %u*\n", irq);
-        do_IRQ(irq, regs);
+        do_IRQ(irq);
 }
 
-static void ip32_irq1(struct pt_regs *regs)
+static void ip32_irq1(void)
 {
-        ip32_unknown_interrupt(regs);
+        ip32_unknown_interrupt();
 }
 
-static void ip32_irq2(struct pt_regs *regs)
+static void ip32_irq2(void)
 {
-        ip32_unknown_interrupt(regs);
+        ip32_unknown_interrupt();
 }
 
-static void ip32_irq3(struct pt_regs *regs)
+static void ip32_irq3(void)
 {
-        ip32_unknown_interrupt(regs);
+        ip32_unknown_interrupt();
 }
 
-static void ip32_irq4(struct pt_regs *regs)
+static void ip32_irq4(void)
 {
-        ip32_unknown_interrupt(regs);
+        ip32_unknown_interrupt();
 }
 
-static void ip32_irq5(struct pt_regs *regs)
+static void ip32_irq5(void)
 {
-        ll_timer_interrupt(IP32_R4K_TIMER_IRQ, regs);
+        ll_timer_interrupt(IP32_R4K_TIMER_IRQ);
 }
 
-asmlinkage void plat_irq_dispatch(struct pt_regs *regs)
+asmlinkage void plat_irq_dispatch(void)
 {
         unsigned int pending = read_c0_cause();
 
         if (likely(pending & IE_IRQ0))
-                ip32_irq0(regs);
+                ip32_irq0();
         else if (unlikely(pending & IE_IRQ1))
-                ip32_irq1(regs);
+                ip32_irq1();
         else if (unlikely(pending & IE_IRQ2))
-                ip32_irq2(regs);
+                ip32_irq2();
         else if (unlikely(pending & IE_IRQ3))
-                ip32_irq3(regs);
+                ip32_irq3();
         else if (unlikely(pending & IE_IRQ4))
-                ip32_irq4(regs);
+                ip32_irq4();
         else if (likely(pending & IE_IRQ5))
-                ip32_irq5(regs);
+                ip32_irq5();
 }
 
 void __init arch_init_irq(void)
diff --git a/arch/mips/sibyte/bcm1480/irq.c b/arch/mips/sibyte/bcm1480/irq.c
index a46b75b23ecb..8b1f41484923 100644
--- a/arch/mips/sibyte/bcm1480/irq.c
+++ b/arch/mips/sibyte/bcm1480/irq.c
@@ -25,9 +25,9 @@
 #include <linux/kernel_stat.h>
 
 #include <asm/errno.h>
+#include <asm/irq_regs.h>
 #include <asm/signal.h>
 #include <asm/system.h>
-#include <asm/ptrace.h>
 #include <asm/io.h>
 
 #include <asm/sibyte/bcm1480_regs.h>
@@ -284,8 +284,7 @@ void __init init_bcm1480_irqs(void)
 }
 
 
-static irqreturn_t bcm1480_dummy_handler(int irq, void *dev_id,
-        struct pt_regs *regs)
+static irqreturn_t bcm1480_dummy_handler(int irq, void *dev_id)
 {
         return IRQ_NONE;
 }
@@ -453,7 +452,7 @@ void __init arch_init_irq(void)
 #define duart_out(reg, val)     csr_out32(val, IOADDR(A_DUART_CHANREG(kgdb_port,reg)))
 #define duart_in(reg)           csr_in32(IOADDR(A_DUART_CHANREG(kgdb_port,reg)))
 
-void bcm1480_kgdb_interrupt(struct pt_regs *regs)
+static void bcm1480_kgdb_interrupt(void)
 {
         /*
          * Clear break-change status (allow some time for the remote
@@ -464,16 +463,15 @@ void bcm1480_kgdb_interrupt(struct pt_regs *regs)
         mdelay(500);
         duart_out(R_DUART_CMD, V_DUART_MISC_CMD_RESET_BREAK_INT |
                                 M_DUART_RX_EN | M_DUART_TX_EN);
-        set_async_breakpoint(&regs->cp0_epc);
+        set_async_breakpoint(&get_irq_regs()->cp0_epc);
 }
 
 #endif  /* CONFIG_KGDB */
 
-extern void bcm1480_timer_interrupt(struct pt_regs *regs);
-extern void bcm1480_mailbox_interrupt(struct pt_regs *regs);
-extern void bcm1480_kgdb_interrupt(struct pt_regs *regs);
+extern void bcm1480_timer_interrupt(void);
+extern void bcm1480_mailbox_interrupt(void);
 
-asmlinkage void plat_irq_dispatch(struct pt_regs *regs)
+asmlinkage void plat_irq_dispatch(void)
 {
         unsigned int pending;
 
@@ -486,21 +484,21 @@ asmlinkage void plat_irq_dispatch(struct pt_regs *regs)
 
 #ifdef CONFIG_SIBYTE_BCM1480_PROF
         if (pending & CAUSEF_IP7)       /* Cpu performance counter interrupt */
-                sbprof_cpu_intr(exception_epc(regs));
+                sbprof_cpu_intr();
         else
 #endif
 
         if (pending & CAUSEF_IP4)
-                bcm1480_timer_interrupt(regs);
+                bcm1480_timer_interrupt();
 
 #ifdef CONFIG_SMP
         else if (pending & CAUSEF_IP3)
-                bcm1480_mailbox_interrupt(regs);
+                bcm1480_mailbox_interrupt();
 #endif
 
 #ifdef CONFIG_KGDB
         else if (pending & CAUSEF_IP6)
-                bcm1480_kgdb_interrupt(regs);           /* KGDB (uart 1) */
+                bcm1480_kgdb_interrupt();               /* KGDB (uart 1) */
 #endif
 
         else if (pending & CAUSEF_IP2) {
@@ -521,9 +519,9 @@ asmlinkage void plat_irq_dispatch(struct pt_regs *regs)
 
                 if (mask_h) {
                         if (mask_h ^ 1)
-                                do_IRQ(fls64(mask_h) - 1, regs);
+                                do_IRQ(fls64(mask_h) - 1);
                         else
-                                do_IRQ(63 + fls64(mask_l), regs);
+                                do_IRQ(63 + fls64(mask_l));
                 }
         }
 }
diff --git a/arch/mips/sibyte/bcm1480/smp.c b/arch/mips/sibyte/bcm1480/smp.c
index 584a4b33faac..6eac36d1b8c8 100644
--- a/arch/mips/sibyte/bcm1480/smp.c
+++ b/arch/mips/sibyte/bcm1480/smp.c
@@ -88,7 +88,7 @@ void core_send_ipi(int cpu, unsigned int action)
         __raw_writeq((((u64)action)<< 48), mailbox_0_set_regs[cpu]);
 }
 
-void bcm1480_mailbox_interrupt(struct pt_regs *regs)
+void bcm1480_mailbox_interrupt(void)
 {
         int cpu = smp_processor_id();
         unsigned int action;
diff --git a/arch/mips/sibyte/bcm1480/time.c b/arch/mips/sibyte/bcm1480/time.c
index 7e088f6c4a86..bf12af46132e 100644
--- a/arch/mips/sibyte/bcm1480/time.c
+++ b/arch/mips/sibyte/bcm1480/time.c
@@ -31,7 +31,6 @@
 #include <linux/kernel_stat.h>
 
 #include <asm/irq.h>
-#include <asm/ptrace.h>
 #include <asm/addrspace.h>
 #include <asm/time.h>
 #include <asm/io.h>
@@ -100,10 +99,10 @@ void bcm1480_time_init(void)
 
 #include <asm/sibyte/sb1250.h>
 
-void bcm1480_timer_interrupt(struct pt_regs *regs)
+void bcm1480_timer_interrupt(void)
 {
         int cpu = smp_processor_id();
-        int irq = K_BCM1480_INT_TIMER_0+cpu;
+        int irq = K_BCM1480_INT_TIMER_0 + cpu;
 
         /* Reset the timer */
         __raw_writeq(M_SCD_TIMER_ENABLE|M_SCD_TIMER_MODE_CONTINUOUS,
@@ -113,13 +112,13 @@ void bcm1480_timer_interrupt(struct pt_regs *regs)
                 /*
                  * CPU 0 handles the global timer interrupt job
                  */
-                ll_timer_interrupt(irq, regs);
+                ll_timer_interrupt(irq);
         }
         else {
                 /*
                  * other CPUs should just do profiling and process accounting
                  */
-                ll_local_timer_interrupt(irq, regs);
+                ll_local_timer_interrupt(irq);
         }
 }
 
diff --git a/arch/mips/sibyte/sb1250/irq.c b/arch/mips/sibyte/sb1250/irq.c
index f9bd9f074517..d5d26770daf6 100644
--- a/arch/mips/sibyte/sb1250/irq.c
+++ b/arch/mips/sibyte/sb1250/irq.c
@@ -28,7 +28,6 @@
 #include <asm/errno.h>
 #include <asm/signal.h>
 #include <asm/system.h>
-#include <asm/ptrace.h>
 #include <asm/io.h>
 
 #include <asm/sibyte/sb1250_regs.h>
@@ -254,8 +253,7 @@ void __init init_sb1250_irqs(void)
 }
 
 
-static irqreturn_t  sb1250_dummy_handler(int irq, void *dev_id,
-        struct pt_regs *regs)
+static irqreturn_t  sb1250_dummy_handler(int irq, void *dev_id)
 {
         return IRQ_NONE;
 }
@@ -403,7 +401,7 @@ void __init arch_init_irq(void)
 #define duart_out(reg, val)     csr_out32(val, IOADDR(A_DUART_CHANREG(kgdb_port,reg)))
 #define duart_in(reg)           csr_in32(IOADDR(A_DUART_CHANREG(kgdb_port,reg)))
 
-static void sb1250_kgdb_interrupt(struct pt_regs *regs)
+static void sb1250_kgdb_interrupt(void)
 {
         /*
          * Clear break-change status (allow some time for the remote
@@ -414,16 +412,15 @@ static void sb1250_kgdb_interrupt(struct pt_regs *regs)
         mdelay(500);
         duart_out(R_DUART_CMD, V_DUART_MISC_CMD_RESET_BREAK_INT |
                                 M_DUART_RX_EN | M_DUART_TX_EN);
-        set_async_breakpoint(&regs->cp0_epc);
+        set_async_breakpoint(&get_irq_regs()->cp0_epc);
 }
 
 #endif  /* CONFIG_KGDB */
 
-extern void sb1250_timer_interrupt(struct pt_regs *regs);
-extern void sb1250_mailbox_interrupt(struct pt_regs *regs);
-extern void sb1250_kgdb_interrupt(struct pt_regs *regs);
+extern void sb1250_timer_interrupt(void);
+extern void sb1250_mailbox_interrupt(void);
 
-asmlinkage void plat_irq_dispatch(struct pt_regs *regs)
+asmlinkage void plat_irq_dispatch(void)
 {
         unsigned int pending;
 
@@ -446,21 +443,21 @@ asmlinkage void plat_irq_dispatch(struct pt_regs *regs)
 
 #ifdef CONFIG_SIBYTE_SB1250_PROF
         if (pending & CAUSEF_IP7) /* Cpu performance counter interrupt */
-                sbprof_cpu_intr(exception_epc(regs));
+                sbprof_cpu_intr();
         else
 #endif
 
         if (pending & CAUSEF_IP4)
-                sb1250_timer_interrupt(regs);
+                sb1250_timer_interrupt();
 
 #ifdef CONFIG_SMP
         else if (pending & CAUSEF_IP3)
-                sb1250_mailbox_interrupt(regs);
+                sb1250_mailbox_interrupt();
 #endif
 
 #ifdef CONFIG_KGDB
         else if (pending & CAUSEF_IP6)                  /* KGDB (uart 1) */
-                sb1250_kgdb_interrupt(regs);
+                sb1250_kgdb_interrupt();
 #endif
 
         else if (pending & CAUSEF_IP2) {
@@ -475,9 +472,9 @@ asmlinkage void plat_irq_dispatch(struct pt_regs *regs)
                 mask = __raw_readq(IOADDR(A_IMR_REGISTER(smp_processor_id(),
                                               R_IMR_INTERRUPT_STATUS_BASE)));
                 if (mask)
-                        do_IRQ(fls64(mask) - 1, regs);
+                        do_IRQ(fls64(mask) - 1);
                 else
-                        spurious_interrupt(regs);
+                        spurious_interrupt();
         } else
-                spurious_interrupt(regs);
+                spurious_interrupt();
 }
diff --git a/arch/mips/sibyte/sb1250/smp.c b/arch/mips/sibyte/sb1250/smp.c
index f859db02d3c9..c38e1f34460d 100644
--- a/arch/mips/sibyte/sb1250/smp.c
+++ b/arch/mips/sibyte/sb1250/smp.c
@@ -76,7 +76,7 @@ void core_send_ipi(int cpu, unsigned int action)
         __raw_writeq((((u64)action) << 48), mailbox_set_regs[cpu]);
 }
 
-void sb1250_mailbox_interrupt(struct pt_regs *regs)
+void sb1250_mailbox_interrupt(void)
 {
         int cpu = smp_processor_id();
         unsigned int action;
diff --git a/arch/mips/sibyte/sb1250/time.c b/arch/mips/sibyte/sb1250/time.c
index 4b669dc86ef4..0ccf1796dd78 100644
--- a/arch/mips/sibyte/sb1250/time.c
+++ b/arch/mips/sibyte/sb1250/time.c
@@ -31,7 +31,6 @@
 #include <linux/kernel_stat.h>
 
 #include <asm/irq.h>
-#include <asm/ptrace.h>
 #include <asm/addrspace.h>
 #include <asm/time.h>
 #include <asm/io.h>
@@ -125,7 +124,7 @@ void sb1250_time_init(void)
          */
 }
 
-void sb1250_timer_interrupt(struct pt_regs *regs)
+void sb1250_timer_interrupt(void)
 {
         int cpu = smp_processor_id();
         int irq = K_INT_TIMER_0 + cpu;
@@ -138,13 +137,13 @@ void sb1250_timer_interrupt(struct pt_regs *regs)
                 /*
                  * CPU 0 handles the global timer interrupt job
                  */
-                ll_timer_interrupt(irq, regs);
+                ll_timer_interrupt(irq);
         }
         else {
                 /*
                  * other CPUs should just do profiling and process accounting
                  */
-                ll_local_timer_interrupt(irq, regs);
+                ll_local_timer_interrupt(irq);
         }
 }
 
diff --git a/arch/mips/sni/irq.c b/arch/mips/sni/irq.c
index cda165f42b6a..48fb74a7aaec 100644
--- a/arch/mips/sni/irq.c
+++ b/arch/mips/sni/irq.c
@@ -69,20 +69,20 @@ static struct irq_chip pciasic_irq_type = {
  * hwint0 should deal with MP agent, ASIC PCI, EISA NMI and debug
  * button interrupts.  Later ...
  */
-static void pciasic_hwint0(struct pt_regs *regs)
+static void pciasic_hwint0(void)
 {
         panic("Received int0 but no handler yet ...");
 }
 
 /* This interrupt was used for the com1 console on the first prototypes.  */
-static void pciasic_hwint2(struct pt_regs *regs)
+static void pciasic_hwint2(void)
 {
         /* I think this shouldn't happen on production machines.  */
         panic("hwint2 and no handler yet");
 }
 
 /* hwint5 is the r4k count / compare interrupt  */
-static void pciasic_hwint5(struct pt_regs *regs)
+static void pciasic_hwint5(void)
 {
         panic("hwint5 and no handler yet");
 }
@@ -103,7 +103,7 @@ static unsigned int ls1bit8(unsigned int x)
  *
  * The EISA_INT bit in CSITPEND is high active, all others are low active.
  */
-static void pciasic_hwint1(struct pt_regs *regs)
+static void pciasic_hwint1(void)
 {
         u8 pend = *(volatile char *)PCIMT_CSITPEND;
         unsigned long flags;
@@ -119,13 +119,13 @@ static void pciasic_hwint1(struct pt_regs *regs)
                 if (unlikely(irq < 0))
                         return;
 
-                do_IRQ(irq, regs);
+                do_IRQ(irq);
         }
 
         if (!(pend & IT_SCSI)) {
                 flags = read_c0_status();
                 clear_c0_status(ST0_IM);
-                do_IRQ(PCIMT_IRQ_SCSI, regs);
+                do_IRQ(PCIMT_IRQ_SCSI);
                 write_c0_status(flags);
         }
 }
@@ -133,7 +133,7 @@ static void pciasic_hwint1(struct pt_regs *regs)
 /*
  * hwint 3 should deal with the PCI A - D interrupts,
  */
-static void pciasic_hwint3(struct pt_regs *regs)
+static void pciasic_hwint3(void)
 {
         u8 pend = *(volatile char *)PCIMT_CSITPEND;
         int irq;
@@ -141,21 +141,21 @@ static void pciasic_hwint3(struct pt_regs *regs)
         pend &= (IT_INTA | IT_INTB | IT_INTC | IT_INTD);
         clear_c0_status(IE_IRQ3);
         irq = PCIMT_IRQ_INT2 + ls1bit8(pend);
-        do_IRQ(irq, regs);
+        do_IRQ(irq);
         set_c0_status(IE_IRQ3);
 }
 
 /*
  * hwint 4 is used for only the onboard PCnet 32.
  */
-static void pciasic_hwint4(struct pt_regs *regs)
+static void pciasic_hwint4(void)
 {
         clear_c0_status(IE_IRQ4);
-        do_IRQ(PCIMT_IRQ_ETHERNET, regs);
+        do_IRQ(PCIMT_IRQ_ETHERNET);
         set_c0_status(IE_IRQ4);
 }
 
-asmlinkage void plat_irq_dispatch(struct pt_regs *regs)
+asmlinkage void plat_irq_dispatch(void)
 {
         unsigned int pending = read_c0_status() & read_c0_cause();
         static unsigned char led_cache;
@@ -163,17 +163,17 @@ asmlinkage void plat_irq_dispatch(struct pt_regs *regs)
         *(volatile unsigned char *) PCIMT_CSLED = ++led_cache;
 
         if (pending & 0x0800)
-                pciasic_hwint1(regs);
+                pciasic_hwint1();
         else if (pending & 0x4000)
-                pciasic_hwint4(regs);
+                pciasic_hwint4();
         else if (pending & 0x2000)
-                pciasic_hwint3(regs);
+                pciasic_hwint3();
         else if (pending & 0x1000)
-                pciasic_hwint2(regs);
+                pciasic_hwint2();
         else if (pending & 0x8000)
-                pciasic_hwint5(regs);
+                pciasic_hwint5();
         else if (pending & 0x0400)
-                pciasic_hwint0(regs);
+                pciasic_hwint0();
 }
 
 void __init init_pciasic(void)
diff --git a/arch/mips/sni/setup.c b/arch/mips/sni/setup.c
index 4e98feb15410..afeb7f13e5b5 100644
--- a/arch/mips/sni/setup.c
+++ b/arch/mips/sni/setup.c
@@ -31,7 +31,6 @@
 #include <asm/irq.h>
 #include <asm/mc146818-time.h>
 #include <asm/processor.h>
-#include <asm/ptrace.h>
 #include <asm/reboot.h>
 #include <asm/sni.h>
 #include <asm/time.h>
diff --git a/arch/mips/tx4927/common/tx4927_irq.c b/arch/mips/tx4927/common/tx4927_irq.c
index cd176f6a06c8..8266a88a3f88 100644
--- a/arch/mips/tx4927/common/tx4927_irq.c
+++ b/arch/mips/tx4927/common/tx4927_irq.c
@@ -576,24 +576,24 @@ static int tx4927_irq_nested(void)
         return (sw_irq);
 }
 
-asmlinkage void plat_irq_dispatch(struct pt_regs *regs)
+asmlinkage void plat_irq_dispatch(void)
 {
         unsigned int pending = read_c0_status() & read_c0_cause();
 
         if (pending & STATUSF_IP7)                      /* cpu timer */
-                do_IRQ(TX4927_IRQ_CPU_TIMER, regs);
+                do_IRQ(TX4927_IRQ_CPU_TIMER);
         else if (pending & STATUSF_IP2) {               /* tx4927 pic */
                 unsigned int irq = tx4927_irq_nested();
 
                 if (unlikely(irq == 0)) {
-                        spurious_interrupt(regs);
+                        spurious_interrupt();
                         return;
                 }
-                do_IRQ(irq, regs);
+                do_IRQ(irq);
         } else if (pending & STATUSF_IP0)               /* user line 0 */
-                do_IRQ(TX4927_IRQ_USER0, regs);
+                do_IRQ(TX4927_IRQ_USER0);
         else if (pending & STATUSF_IP1)                 /* user line 1 */
-                do_IRQ(TX4927_IRQ_USER1, regs);
+                do_IRQ(TX4927_IRQ_USER1);
         else
-                spurious_interrupt(regs);
+                spurious_interrupt();
 }
diff --git a/arch/mips/tx4927/common/tx4927_setup.c b/arch/mips/tx4927/common/tx4927_setup.c
index 3ace4037343e..4658b2ae4833 100644
--- a/arch/mips/tx4927/common/tx4927_setup.c
+++ b/arch/mips/tx4927/common/tx4927_setup.c
@@ -53,19 +53,9 @@ void __init tx4927_time_init(void);
 void dump_cp0(char *key);
 
 
-void (*__wbflush) (void);
-
-static void tx4927_write_buffer_flush(void)
-{
-        __asm__ __volatile__
-            ("sync\n\t" "nop\n\t" "loop: bc0f loop\n\t" "nop\n\t");
-}
-
-
 void __init plat_mem_setup(void)
 {
         board_time_init = tx4927_time_init;
-        __wbflush = tx4927_write_buffer_flush;
 
 #ifdef CONFIG_TOSHIBA_RBTX4927
         {
diff --git a/arch/mips/tx4927/toshiba_rbtx4927/toshiba_rbtx4927_irq.c b/arch/mips/tx4927/toshiba_rbtx4927/toshiba_rbtx4927_irq.c
index b0f021f2a6c4..0c3c3f668230 100644
--- a/arch/mips/tx4927/toshiba_rbtx4927/toshiba_rbtx4927_irq.c
+++ b/arch/mips/tx4927/toshiba_rbtx4927/toshiba_rbtx4927_irq.c
@@ -127,9 +127,9 @@ JP7 is not bus master -- do NOT use -- only 4 pci bus master's allowed -- SouthB
 #include <asm/irq.h>
 #include <asm/pci.h>
 #include <asm/processor.h>
-#include <asm/ptrace.h>
 #include <asm/reboot.h>
 #include <asm/time.h>
+#include <asm/wbflush.h>
 #include <linux/bootmem.h>
 #include <linux/blkdev.h>
 #ifdef CONFIG_RTC_DS1742
diff --git a/arch/mips/tx4927/toshiba_rbtx4927/toshiba_rbtx4927_setup.c b/arch/mips/tx4927/toshiba_rbtx4927/toshiba_rbtx4927_setup.c
index f0d70c476005..735cb8778f4c 100644
--- a/arch/mips/tx4927/toshiba_rbtx4927/toshiba_rbtx4927_setup.c
+++ b/arch/mips/tx4927/toshiba_rbtx4927/toshiba_rbtx4927_setup.c
@@ -58,8 +58,8 @@
 #include <asm/page.h>
 #include <asm/io.h>
 #include <asm/irq.h>
+#include <asm/irq_regs.h>
 #include <asm/processor.h>
-#include <asm/ptrace.h>
 #include <asm/reboot.h>
 #include <asm/time.h>
 #include <linux/bootmem.h>
@@ -160,8 +160,7 @@ int tx4927_pci66 = 0;		/* 0:auto */
 char *toshiba_name = "";
 
 #ifdef CONFIG_PCI
-static void tx4927_pcierr_interrupt(int irq, void *dev_id,
-                                    struct pt_regs *regs)
+static void tx4927_pcierr_interrupt(int irq, void *dev_id)
 {
 #ifdef CONFIG_BLK_DEV_IDEPCI
         /* ignore MasterAbort for ide probing... */
@@ -185,7 +184,7 @@ static void tx4927_pcierr_interrupt(int irq, void *dev_id,
                (unsigned long) tx4927_ccfgptr->ccfg,
                (unsigned long) (tx4927_ccfgptr->tear >> 32),
                (unsigned long) tx4927_ccfgptr->tear);
-        show_regs(regs);
+        show_regs(get_irq_regs());
 }
 
 void __init toshiba_rbtx4927_pci_irq_init(void)
diff --git a/arch/mips/tx4938/common/irq.c b/arch/mips/tx4938/common/irq.c
index cbfb34221b59..77fe2454f5b9 100644
--- a/arch/mips/tx4938/common/irq.c
+++ b/arch/mips/tx4938/common/irq.c
@@ -30,6 +30,7 @@
 #include <asm/irq.h>
 #include <asm/mipsregs.h>
 #include <asm/system.h>
+#include <asm/wbflush.h>
 #include <asm/tx4938/rbtx4938.h>
 
 /**********************************************************************************/
@@ -104,8 +105,6 @@ tx4938_irq_cp0_init(void)
                 irq_desc[i].depth = 1;
                 irq_desc[i].chip = &tx4938_irq_cp0_type;
         }
-
-        return;
 }
 
 static unsigned int
@@ -113,7 +112,7 @@ tx4938_irq_cp0_startup(unsigned int irq)
 {
         tx4938_irq_cp0_enable(irq);
 
-        return (0);
+        return 0;
 }
 
 static void
@@ -144,16 +143,12 @@ tx4938_irq_cp0_disable(unsigned int irq)
         clear_c0_status(tx4938_irq_cp0_mask(irq));
 
         spin_unlock_irqrestore(&tx4938_cp0_lock, flags);
-
-        return;
 }
 
 static void
 tx4938_irq_cp0_mask_and_ack(unsigned int irq)
 {
         tx4938_irq_cp0_disable(irq);
-
-        return;
 }
 
 static void
@@ -162,8 +157,6 @@ tx4938_irq_cp0_end(unsigned int irq)
         if (!(irq_desc[irq].status & (IRQ_DISABLED | IRQ_INPROGRESS))) {
                 tx4938_irq_cp0_enable(irq);
         }
-
-        return;
 }
 
 /**********************************************************************************/
@@ -227,7 +220,7 @@ tx4938_irq_pic_addr(int irq)
                 }
         }
 
-        return (0);
+        return 0;
 }
 
 u32
@@ -278,7 +271,7 @@ tx4938_irq_pic_mask(int irq)
                         return (0x00000007);
                 }
         }
-        return (0x00000000);
+        return 0x00000000;
 }
 
 static void
@@ -292,8 +285,6 @@ tx4938_irq_pic_modify(unsigned pic_reg, unsigned clr_bits, unsigned set_bits)
         TX4938_WR(pic_reg, val);
         mmiowb();
         TX4938_RD(pic_reg);
-
-        return;
 }
 
 static void __init
@@ -317,8 +308,6 @@ tx4938_irq_pic_init(void)
         TX4938_WR(0xff1ff600, TX4938_RD(0xff1ff600) | 0x1);     /* irq enable */
 
         spin_unlock_irqrestore(&tx4938_pic_lock, flags);
-
-        return;
 }
 
 static unsigned int
@@ -326,15 +315,13 @@ tx4938_irq_pic_startup(unsigned int irq)
 {
         tx4938_irq_pic_enable(irq);
 
-        return (0);
+        return 0;
 }
 
 static void
 tx4938_irq_pic_shutdown(unsigned int irq)
 {
         tx4938_irq_pic_disable(irq);
-
-        return;
 }
 
 static void
@@ -348,8 +335,6 @@ tx4938_irq_pic_enable(unsigned int irq)
                               tx4938_irq_pic_mask(irq));
 
         spin_unlock_irqrestore(&tx4938_pic_lock, flags);
-
-        return;
 }
 
 static void
@@ -363,16 +348,12 @@ tx4938_irq_pic_disable(unsigned int irq)
                               tx4938_irq_pic_mask(irq), 0);
 
         spin_unlock_irqrestore(&tx4938_pic_lock, flags);
-
-        return;
 }
 
 static void
 tx4938_irq_pic_mask_and_ack(unsigned int irq)
 {
         tx4938_irq_pic_disable(irq);
-
-        return;
 }
 
 static void
@@ -381,8 +362,6 @@ tx4938_irq_pic_end(unsigned int irq)
         if (!(irq_desc[irq].status & (IRQ_DISABLED | IRQ_INPROGRESS))) {
                 tx4938_irq_pic_enable(irq);
         }
-
-        return;
 }
 
 /**********************************************************************************/
@@ -394,8 +373,6 @@ tx4938_irq_init(void)
 {
         tx4938_irq_cp0_init();
         tx4938_irq_pic_init();
-
-        return;
 }
 
 int
@@ -417,23 +394,23 @@ tx4938_irq_nested(void)
         }
 
         wbflush();
-        return (sw_irq);
+        return sw_irq;
 }
 
-asmlinkage void plat_irq_dispatch(struct pt_regs *regs)
+asmlinkage void plat_irq_dispatch(void)
 {
         unsigned int pending = read_c0_cause() & read_c0_status();
 
         if (pending & STATUSF_IP7)
-                do_IRQ(TX4938_IRQ_CPU_TIMER, regs);
+                do_IRQ(TX4938_IRQ_CPU_TIMER);
         else if (pending & STATUSF_IP2) {
                 int irq = tx4938_irq_nested();
                 if (irq)
-                        do_IRQ(irq, regs);
+                        do_IRQ(irq);
                 else
-                        spurious_interrupt(regs);
+                        spurious_interrupt();
         } else if (pending & STATUSF_IP1)
-                do_IRQ(TX4938_IRQ_USER1, regs);
+                do_IRQ(TX4938_IRQ_USER1);
         else if (pending & STATUSF_IP0)
-                do_IRQ(TX4938_IRQ_USER0, regs);
+                do_IRQ(TX4938_IRQ_USER0);
 }
diff --git a/arch/mips/tx4938/common/setup.c b/arch/mips/tx4938/common/setup.c
index 71859c4fee84..f415a1f18fba 100644
--- a/arch/mips/tx4938/common/setup.c
+++ b/arch/mips/tx4938/common/setup.c
@@ -41,29 +41,10 @@ void __init tx4938_setup(void);
 void __init tx4938_time_init(void);
 void dump_cp0(char *key);
 
-void (*__wbflush) (void);
-
-static void
-tx4938_write_buffer_flush(void)
-{
-        mmiowb();
-
-        __asm__ __volatile__(
-                ".set   push\n\t"
-                ".set   noreorder\n\t"
-                "lw     $0,%0\n\t"
-                "nop\n\t"
-                ".set   pop"
-                : /* no output */
-                : "m" (*(int *)KSEG1)
-                : "memory");
-}
-
 void __init
 plat_mem_setup(void)
 {
         board_time_init = tx4938_time_init;
-        __wbflush = tx4938_write_buffer_flush;
         toshiba_rbtx4938_setup();
 }
 
diff --git a/arch/mips/tx4938/toshiba_rbtx4938/irq.c b/arch/mips/tx4938/toshiba_rbtx4938/irq.c
index 83f2750825a4..102e473c10a2 100644
--- a/arch/mips/tx4938/toshiba_rbtx4938/irq.c
+++ b/arch/mips/tx4938/toshiba_rbtx4938/irq.c
@@ -81,9 +81,9 @@ IRQ  Device
 #include <asm/io.h>
 #include <asm/irq.h>
 #include <asm/processor.h>
-#include <asm/ptrace.h>
 #include <asm/reboot.h>
 #include <asm/time.h>
+#include <asm/wbflush.h>
 #include <linux/bootmem.h>
 #include <asm/tx4938/rbtx4938.h>
 
diff --git a/arch/mips/tx4938/toshiba_rbtx4938/spi_txx9.c b/arch/mips/tx4938/toshiba_rbtx4938/spi_txx9.c
index fae3136f462d..b926e6a75c29 100644
--- a/arch/mips/tx4938/toshiba_rbtx4938/spi_txx9.c
+++ b/arch/mips/tx4938/toshiba_rbtx4938/spi_txx9.c
@@ -35,7 +35,8 @@ void __init txx9_spi_init(unsigned long base, int (*cs_func)(int chipid, int on)
 }
 
 static DECLARE_WAIT_QUEUE_HEAD(txx9_spi_wait);
-static void txx9_spi_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+
+static void txx9_spi_interrupt(int irq, void *dev_id)
 {
         /* disable rx intr */
         tx4938_spiptr->cr0 &= ~TXx9_SPCR0_RBSIE;
diff --git a/arch/mips/vr41xx/common/icu.c b/arch/mips/vr41xx/common/icu.c
index 7a5c31d58378..c215c0d39fae 100644
--- a/arch/mips/vr41xx/common/icu.c
+++ b/arch/mips/vr41xx/common/icu.c
@@ -635,7 +635,7 @@ int vr41xx_set_intassign(unsigned int irq, unsigned char intassign)
 
 EXPORT_SYMBOL(vr41xx_set_intassign);
 
-static int icu_get_irq(unsigned int irq, struct pt_regs *regs)
+static int icu_get_irq(unsigned int irq)
 {
         uint16_t pend1, pend2;
         uint16_t mask1, mask2;
diff --git a/arch/mips/vr41xx/common/irq.c b/arch/mips/vr41xx/common/irq.c
index 4733c5344467..397ba94cd7ec 100644
--- a/arch/mips/vr41xx/common/irq.c
+++ b/arch/mips/vr41xx/common/irq.c
@@ -25,7 +25,7 @@
 #include <asm/vr41xx/irq.h>
 
 typedef struct irq_cascade {
-        int (*get_irq)(unsigned int, struct pt_regs *);
+        int (*get_irq)(unsigned int);
 } irq_cascade_t;
 
 static irq_cascade_t irq_cascade[NR_IRQS] __cacheline_aligned;
@@ -36,7 +36,7 @@ static struct irqaction cascade_irqaction = {
         .name           = "cascade",
 };
 
-int cascade_irq(unsigned int irq, int (*get_irq)(unsigned int, struct pt_regs *))
+int cascade_irq(unsigned int irq, int (*get_irq)(unsigned int))
 {
         int retval = 0;
 
@@ -59,7 +59,7 @@ int cascade_irq(unsigned int irq, int (*get_irq)(unsigned int, struct pt_regs *)
 
 EXPORT_SYMBOL_GPL(cascade_irq);
 
-static void irq_dispatch(unsigned int irq, struct pt_regs *regs)
+static void irq_dispatch(unsigned int irq)
 {
         irq_cascade_t *cascade;
         struct irq_desc *desc;
@@ -74,39 +74,39 @@ static void irq_dispatch(unsigned int irq, struct pt_regs *regs)
                 unsigned int source_irq = irq;
                 desc = irq_desc + source_irq;
                 desc->chip->ack(source_irq);
-                irq = cascade->get_irq(irq, regs);
+                irq = cascade->get_irq(irq);
                 if (irq < 0)
                         atomic_inc(&irq_err_count);
                 else
-                        irq_dispatch(irq, regs);
+                        irq_dispatch(irq);
                 desc->chip->end(source_irq);
         } else
-                do_IRQ(irq, regs);
+                do_IRQ(irq);
 }
 
-asmlinkage void plat_irq_dispatch(struct pt_regs *regs)
+asmlinkage void plat_irq_dispatch(void)
 {
         unsigned int pending = read_c0_cause() & read_c0_status() & ST0_IM;
 
         if (pending & CAUSEF_IP7)
-                do_IRQ(7, regs);
+                do_IRQ(7);
         else if (pending & 0x7800) {
                 if (pending & CAUSEF_IP3)
-                        irq_dispatch(3, regs);
+                        irq_dispatch(3);
                 else if (pending & CAUSEF_IP4)
-                        irq_dispatch(4, regs);
+                        irq_dispatch(4);
                 else if (pending & CAUSEF_IP5)
-                        irq_dispatch(5, regs);
+                        irq_dispatch(5);
                 else if (pending & CAUSEF_IP6)
-                        irq_dispatch(6, regs);
+                        irq_dispatch(6);
         } else if (pending & CAUSEF_IP2)
-                irq_dispatch(2, regs);
+                irq_dispatch(2);
         else if (pending & CAUSEF_IP0)
-                do_IRQ(0, regs);
+                do_IRQ(0);
         else if (pending & CAUSEF_IP1)
-                do_IRQ(1, regs);
+                do_IRQ(1);
         else
-                spurious_interrupt(regs);
+                spurious_interrupt();
 }
 
 void __init arch_init_irq(void)
diff --git a/arch/parisc/kernel/drivers.c b/arch/parisc/kernel/drivers.c
index 2b257e4f17df..d6c486e9501c 100644
--- a/arch/parisc/kernel/drivers.c
+++ b/arch/parisc/kernel/drivers.c
@@ -424,7 +424,7 @@ struct parisc_device * create_tree_node(char id, struct device *parent)
         /* make the generic dma mask a pointer to the parisc one */
         dev->dev.dma_mask = &dev->dma_mask;
         dev->dev.coherent_dma_mask = dev->dma_mask;
-        if (!device_register(&dev->dev)) {
+        if (device_register(&dev->dev)) {
                 kfree(dev);
                 return NULL;
         }
@@ -853,9 +853,9 @@ static void print_parisc_device(struct parisc_device *dev)
  */
 void init_parisc_bus(void)
 {
-        if (!bus_register(&parisc_bus_type))
+        if (bus_register(&parisc_bus_type))
                 panic("Could not register PA-RISC bus type\n");
-        if (!device_register(&root))
+        if (device_register(&root))
                 panic("Could not register PA-RISC root device\n");
         get_device(&root);
 }
diff --git a/arch/parisc/kernel/firmware.c b/arch/parisc/kernel/firmware.c
index c2531ae032cf..9158b707c0dd 100644
--- a/arch/parisc/kernel/firmware.c
+++ b/arch/parisc/kernel/firmware.c
@@ -160,13 +160,14 @@ void __init set_firmware_width(void)
 {
 #ifdef __LP64__
         int retval;
+        unsigned long flags;
 
-        spin_lock_irq(&pdc_lock);
+        spin_lock_irqsave(&pdc_lock, flags);
         retval = mem_pdc_call(PDC_MODEL, PDC_MODEL_CAPABILITIES, __pa(pdc_result), 0);
         convert_to_wide(pdc_result);
         if(pdc_result[0] != NARROW_FIRMWARE)
                 parisc_narrow_firmware = 0;
-        spin_unlock_irq(&pdc_lock);
+        spin_unlock_irqrestore(&pdc_lock, flags);
 #endif
 }
 
@@ -196,10 +197,11 @@ void pdc_emergency_unlock(void)
 int pdc_add_valid(unsigned long address)
 {
         int retval;
+        unsigned long flags;
 
-        spin_lock_irq(&pdc_lock);
+        spin_lock_irqsave(&pdc_lock, flags);
         retval = mem_pdc_call(PDC_ADD_VALID, PDC_ADD_VALID_VERIFY, address);
-        spin_unlock_irq(&pdc_lock);
+        spin_unlock_irqrestore(&pdc_lock, flags);
 
         return retval;
 }
@@ -216,15 +218,16 @@ EXPORT_SYMBOL(pdc_add_valid);
 int __init pdc_chassis_info(struct pdc_chassis_info *chassis_info, void *led_info, unsigned long len)
 {
         int retval;
+        unsigned long flags;
 
-        spin_lock_irq(&pdc_lock);
+        spin_lock_irqsave(&pdc_lock, flags);
         memcpy(&pdc_result, chassis_info, sizeof(*chassis_info));
         memcpy(&pdc_result2, led_info, len);
         retval = mem_pdc_call(PDC_CHASSIS, PDC_RETURN_CHASSIS_INFO,
                               __pa(pdc_result), __pa(pdc_result2), len);
         memcpy(chassis_info, pdc_result, sizeof(*chassis_info));
         memcpy(led_info, pdc_result2, len);
-        spin_unlock_irq(&pdc_lock);
+        spin_unlock_irqrestore(&pdc_lock, flags);
 
         return retval;
 }
@@ -239,13 +242,14 @@ int __init pdc_chassis_info(struct pdc_chassis_info *chassis_info, void *led_inf
 int pdc_pat_chassis_send_log(unsigned long state, unsigned long data)
 {
         int retval = 0;
+        unsigned long flags;
         
         if (!is_pdc_pat())
                 return -1;
 
-        spin_lock_irq(&pdc_lock);
+        spin_lock_irqsave(&pdc_lock, flags);
         retval = mem_pdc_call(PDC_PAT_CHASSIS_LOG, PDC_PAT_CHASSIS_WRITE_LOG, __pa(&state), __pa(&data));
-        spin_unlock_irq(&pdc_lock);
+        spin_unlock_irqrestore(&pdc_lock, flags);
 
         return retval;
 }
@@ -258,10 +262,11 @@ int pdc_pat_chassis_send_log(unsigned long state, unsigned long data)
 int pdc_chassis_disp(unsigned long disp)
 {
         int retval = 0;
+        unsigned long flags;
 
-        spin_lock_irq(&pdc_lock);
+        spin_lock_irqsave(&pdc_lock, flags);
         retval = mem_pdc_call(PDC_CHASSIS, PDC_CHASSIS_DISP, disp);
-        spin_unlock_irq(&pdc_lock);
+        spin_unlock_irqrestore(&pdc_lock, flags);
 
         return retval;
 }
@@ -273,11 +278,12 @@ int pdc_chassis_disp(unsigned long disp)
 int pdc_chassis_warn(unsigned long *warn)
 {
         int retval = 0;
+        unsigned long flags;
 
-        spin_lock_irq(&pdc_lock);
+        spin_lock_irqsave(&pdc_lock, flags);
         retval = mem_pdc_call(PDC_CHASSIS, PDC_CHASSIS_WARN, __pa(pdc_result));
         *warn = pdc_result[0];
-        spin_unlock_irq(&pdc_lock);
+        spin_unlock_irqrestore(&pdc_lock, flags);
 
         return retval;
 }
@@ -292,15 +298,16 @@ int pdc_chassis_warn(unsigned long *warn)
 int __init pdc_coproc_cfg(struct pdc_coproc_cfg *pdc_coproc_info)
 {
         int retval;
+        unsigned long flags;
 
-        spin_lock_irq(&pdc_lock);
+        spin_lock_irqsave(&pdc_lock, flags);
         retval = mem_pdc_call(PDC_COPROC, PDC_COPROC_CFG, __pa(pdc_result));
         convert_to_wide(pdc_result);
         pdc_coproc_info->ccr_functional = pdc_result[0];
         pdc_coproc_info->ccr_present = pdc_result[1];
         pdc_coproc_info->revision = pdc_result[17];
         pdc_coproc_info->model = pdc_result[18];
-        spin_unlock_irq(&pdc_lock);
+        spin_unlock_irqrestore(&pdc_lock, flags);
 
         return retval;
 }
@@ -320,14 +327,15 @@ int pdc_iodc_read(unsigned long *actcnt, unsigned long hpa, unsigned int index,
                   void *iodc_data, unsigned int iodc_data_size)
 {
         int retval;
+        unsigned long flags;
 
-        spin_lock_irq(&pdc_lock);
+        spin_lock_irqsave(&pdc_lock, flags);
         retval = mem_pdc_call(PDC_IODC, PDC_IODC_READ, __pa(pdc_result), hpa, 
                               index, __pa(pdc_result2), iodc_data_size);
         convert_to_wide(pdc_result);
         *actcnt = pdc_result[0];
         memcpy(iodc_data, pdc_result2, iodc_data_size);
-        spin_unlock_irq(&pdc_lock);
+        spin_unlock_irqrestore(&pdc_lock, flags);
 
         return retval;
 }
@@ -346,14 +354,15 @@ int pdc_system_map_find_mods(struct pdc_system_map_mod_info *pdc_mod_info,
                              struct pdc_module_path *mod_path, long mod_index)
 {
         int retval;
+        unsigned long flags;
 
-        spin_lock_irq(&pdc_lock);
+        spin_lock_irqsave(&pdc_lock, flags);
         retval = mem_pdc_call(PDC_SYSTEM_MAP, PDC_FIND_MODULE, __pa(pdc_result), 
                               __pa(pdc_result2), mod_index);
         convert_to_wide(pdc_result);
         memcpy(pdc_mod_info, pdc_result, sizeof(*pdc_mod_info));
         memcpy(mod_path, pdc_result2, sizeof(*mod_path));
-        spin_unlock_irq(&pdc_lock);
+        spin_unlock_irqrestore(&pdc_lock, flags);
 
         pdc_mod_info->mod_addr = f_extend(pdc_mod_info->mod_addr);
         return retval;
@@ -372,13 +381,14 @@ int pdc_system_map_find_addrs(struct pdc_system_map_addr_info *pdc_addr_info,
                               long mod_index, long addr_index)
 {
         int retval;
+        unsigned long flags;
 
-        spin_lock_irq(&pdc_lock);
+        spin_lock_irqsave(&pdc_lock, flags);
         retval = mem_pdc_call(PDC_SYSTEM_MAP, PDC_FIND_ADDRESS, __pa(pdc_result),
                               mod_index, addr_index);
         convert_to_wide(pdc_result);
         memcpy(pdc_addr_info, pdc_result, sizeof(*pdc_addr_info));
-        spin_unlock_irq(&pdc_lock);
+        spin_unlock_irqrestore(&pdc_lock, flags);
 
         pdc_addr_info->mod_addr = f_extend(pdc_addr_info->mod_addr);
         return retval;
@@ -393,12 +403,13 @@ int pdc_system_map_find_addrs(struct pdc_system_map_addr_info *pdc_addr_info,
 int pdc_model_info(struct pdc_model *model) 
 {
         int retval;
+        unsigned long flags;
 
-        spin_lock_irq(&pdc_lock);
+        spin_lock_irqsave(&pdc_lock, flags);
         retval = mem_pdc_call(PDC_MODEL, PDC_MODEL_INFO, __pa(pdc_result), 0);
         convert_to_wide(pdc_result);
         memcpy(model, pdc_result, sizeof(*model));
-        spin_unlock_irq(&pdc_lock);
+        spin_unlock_irqrestore(&pdc_lock, flags);
 
         return retval;
 }
@@ -414,8 +425,9 @@ int pdc_model_info(struct pdc_model *model)
 int pdc_model_sysmodel(char *name)
 {
         int retval;
+        unsigned long flags;
 
-        spin_lock_irq(&pdc_lock);
+        spin_lock_irqsave(&pdc_lock, flags);
         retval = mem_pdc_call(PDC_MODEL, PDC_MODEL_SYSMODEL, __pa(pdc_result),
                               OS_ID_HPUX, __pa(name));
         convert_to_wide(pdc_result);
@@ -425,7 +437,7 @@ int pdc_model_sysmodel(char *name)
         } else {
                 name[0] = 0;
         }
-        spin_unlock_irq(&pdc_lock);
+        spin_unlock_irqrestore(&pdc_lock, flags);
 
         return retval;
 }
@@ -443,12 +455,13 @@ int pdc_model_sysmodel(char *name)
 int pdc_model_versions(unsigned long *versions, int id)
 {
         int retval;
+        unsigned long flags;
 
-        spin_lock_irq(&pdc_lock);
+        spin_lock_irqsave(&pdc_lock, flags);
         retval = mem_pdc_call(PDC_MODEL, PDC_MODEL_VERSIONS, __pa(pdc_result), id);
         convert_to_wide(pdc_result);
         *versions = pdc_result[0];
-        spin_unlock_irq(&pdc_lock);
+        spin_unlock_irqrestore(&pdc_lock, flags);
 
         return retval;
 }
@@ -463,13 +476,14 @@ int pdc_model_versions(unsigned long *versions, int id)
 int pdc_model_cpuid(unsigned long *cpu_id)
 {
         int retval;
+        unsigned long flags;
 
-        spin_lock_irq(&pdc_lock);
+        spin_lock_irqsave(&pdc_lock, flags);
         pdc_result[0] = 0; /* preset zero (call may not be implemented!) */
         retval = mem_pdc_call(PDC_MODEL, PDC_MODEL_CPU_ID, __pa(pdc_result), 0);
         convert_to_wide(pdc_result);
         *cpu_id = pdc_result[0];
-        spin_unlock_irq(&pdc_lock);
+        spin_unlock_irqrestore(&pdc_lock, flags);
 
         return retval;
 }
@@ -484,13 +498,14 @@ int pdc_model_cpuid(unsigned long *cpu_id)
 int pdc_model_capabilities(unsigned long *capabilities)
 {
         int retval;
+        unsigned long flags;
 
-        spin_lock_irq(&pdc_lock);
+        spin_lock_irqsave(&pdc_lock, flags);
         pdc_result[0] = 0; /* preset zero (call may not be implemented!) */
         retval = mem_pdc_call(PDC_MODEL, PDC_MODEL_CAPABILITIES, __pa(pdc_result), 0);
         convert_to_wide(pdc_result);
         *capabilities = pdc_result[0];
-        spin_unlock_irq(&pdc_lock);
+        spin_unlock_irqrestore(&pdc_lock, flags);
 
         return retval;
 }
@@ -504,12 +519,13 @@ int pdc_model_capabilities(unsigned long *capabilities)
 int pdc_cache_info(struct pdc_cache_info *cache_info)
 {
         int retval;
+        unsigned long flags;
 
-        spin_lock_irq(&pdc_lock);
+        spin_lock_irqsave(&pdc_lock, flags);
         retval = mem_pdc_call(PDC_CACHE, PDC_CACHE_INFO, __pa(pdc_result), 0);
         convert_to_wide(pdc_result);
         memcpy(cache_info, pdc_result, sizeof(*cache_info));
-        spin_unlock_irq(&pdc_lock);
+        spin_unlock_irqrestore(&pdc_lock, flags);
 
         return retval;
 }
@@ -523,13 +539,14 @@ int pdc_cache_info(struct pdc_cache_info *cache_info)
 int pdc_spaceid_bits(unsigned long *space_bits)
 {
         int retval;
+        unsigned long flags;
 
-        spin_lock_irq(&pdc_lock);
+        spin_lock_irqsave(&pdc_lock, flags);
         pdc_result[0] = 0;
         retval = mem_pdc_call(PDC_CACHE, PDC_CACHE_RET_SPID, __pa(pdc_result), 0);
         convert_to_wide(pdc_result);
         *space_bits = pdc_result[0];
-        spin_unlock_irq(&pdc_lock);
+        spin_unlock_irqrestore(&pdc_lock, flags);
 
         return retval;
 }
@@ -544,11 +561,12 @@ int pdc_spaceid_bits(unsigned long *space_bits)
 int pdc_btlb_info(struct pdc_btlb_info *btlb) 
 {
         int retval;
+        unsigned long flags;
 
-        spin_lock_irq(&pdc_lock);
+        spin_lock_irqsave(&pdc_lock, flags);
         retval = mem_pdc_call(PDC_BLOCK_TLB, PDC_BTLB_INFO, __pa(pdc_result), 0);
         memcpy(btlb, pdc_result, sizeof(*btlb));
-        spin_unlock_irq(&pdc_lock);
+        spin_unlock_irqrestore(&pdc_lock, flags);
 
         if(retval < 0) {
                 btlb->max_size = 0;
@@ -572,13 +590,14 @@ int pdc_mem_map_hpa(struct pdc_memory_map *address,
                 struct pdc_module_path *mod_path)
 {
         int retval;
+        unsigned long flags;
 
-        spin_lock_irq(&pdc_lock);
+        spin_lock_irqsave(&pdc_lock, flags);
         memcpy(pdc_result2, mod_path, sizeof(*mod_path));
         retval = mem_pdc_call(PDC_MEM_MAP, PDC_MEM_MAP_HPA, __pa(pdc_result),
                                 __pa(pdc_result2));
         memcpy(address, pdc_result, sizeof(*address));
-        spin_unlock_irq(&pdc_lock);
+        spin_unlock_irqrestore(&pdc_lock, flags);
 
         return retval;
 }
@@ -594,8 +613,9 @@ int pdc_mem_map_hpa(struct pdc_memory_map *address,
 int pdc_lan_station_id(char *lan_addr, unsigned long hpa)
 {
         int retval;
+        unsigned long flags;
 
-        spin_lock_irq(&pdc_lock);
+        spin_lock_irqsave(&pdc_lock, flags);
         retval = mem_pdc_call(PDC_LAN_STATION_ID, PDC_LAN_STATION_ID_READ,
                         __pa(pdc_result), hpa);
         if (retval < 0) {
@@ -604,7 +624,7 @@ int pdc_lan_station_id(char *lan_addr, unsigned long hpa)
         } else {
                 memcpy(lan_addr, pdc_result, PDC_LAN_STATION_ID_SIZE);
         }
-        spin_unlock_irq(&pdc_lock);
+        spin_unlock_irqrestore(&pdc_lock, flags);
 
         return retval;
 }
@@ -623,13 +643,14 @@ EXPORT_SYMBOL(pdc_lan_station_id);
 int pdc_stable_read(unsigned long staddr, void *memaddr, unsigned long count)
 {
        int retval;
+        unsigned long flags;
 
-       spin_lock_irq(&pdc_lock);
+       spin_lock_irqsave(&pdc_lock, flags);
        retval = mem_pdc_call(PDC_STABLE, PDC_STABLE_READ, staddr,
                __pa(pdc_result), count);
        convert_to_wide(pdc_result);
        memcpy(memaddr, pdc_result, count);
-       spin_unlock_irq(&pdc_lock);
+       spin_unlock_irqrestore(&pdc_lock, flags);
 
        return retval;
 }
@@ -648,13 +669,14 @@ EXPORT_SYMBOL(pdc_stable_read);
 int pdc_stable_write(unsigned long staddr, void *memaddr, unsigned long count)
 {
        int retval;
+        unsigned long flags;
 
-       spin_lock_irq(&pdc_lock);
+       spin_lock_irqsave(&pdc_lock, flags);
        memcpy(pdc_result, memaddr, count);
        convert_to_wide(pdc_result);
        retval = mem_pdc_call(PDC_STABLE, PDC_STABLE_WRITE, staddr,
                __pa(pdc_result), count);
-       spin_unlock_irq(&pdc_lock);
+       spin_unlock_irqrestore(&pdc_lock, flags);
 
        return retval;
 }
@@ -672,11 +694,12 @@ EXPORT_SYMBOL(pdc_stable_write);
 int pdc_stable_get_size(unsigned long *size)
 {
        int retval;
+        unsigned long flags;
 
-       spin_lock_irq(&pdc_lock);
+       spin_lock_irqsave(&pdc_lock, flags);
        retval = mem_pdc_call(PDC_STABLE, PDC_STABLE_RETURN_SIZE, __pa(pdc_result));
        *size = pdc_result[0];
-       spin_unlock_irq(&pdc_lock);
+       spin_unlock_irqrestore(&pdc_lock, flags);
 
        return retval;
 }
@@ -691,10 +714,11 @@ EXPORT_SYMBOL(pdc_stable_get_size);
 int pdc_stable_verify_contents(void)
 {
        int retval;
+        unsigned long flags;
 
-       spin_lock_irq(&pdc_lock);
+       spin_lock_irqsave(&pdc_lock, flags);
        retval = mem_pdc_call(PDC_STABLE, PDC_STABLE_VERIFY_CONTENTS);
-       spin_unlock_irq(&pdc_lock);
+       spin_unlock_irqrestore(&pdc_lock, flags);
 
        return retval;
 }
@@ -709,10 +733,11 @@ EXPORT_SYMBOL(pdc_stable_verify_contents);
 int pdc_stable_initialize(void)
 {
        int retval;
+        unsigned long flags;
 
-       spin_lock_irq(&pdc_lock);
+       spin_lock_irqsave(&pdc_lock, flags);
        retval = mem_pdc_call(PDC_STABLE, PDC_STABLE_INITIALIZE);
-       spin_unlock_irq(&pdc_lock);
+       spin_unlock_irqrestore(&pdc_lock, flags);
 
        return retval;
 }
@@ -735,8 +760,9 @@ EXPORT_SYMBOL(pdc_stable_initialize);
 int pdc_get_initiator(struct hardware_path *hwpath, struct pdc_initiator *initiator)
 {
         int retval;
+        unsigned long flags;
 
-        spin_lock_irq(&pdc_lock);
+        spin_lock_irqsave(&pdc_lock, flags);
 
 /* BCJ-XXXX series boxes. E.G. "9000/785/C3000" */
 #define IS_SPROCKETS() (strlen(boot_cpu_data.pdc.sys_model_name) == 14 && \
@@ -776,7 +802,8 @@ int pdc_get_initiator(struct hardware_path *hwpath, struct pdc_initiator *initia
         }
 
  out:
-        spin_unlock_irq(&pdc_lock);
+        spin_unlock_irqrestore(&pdc_lock, flags);
+
         return (retval >= PDC_OK);
 }
 EXPORT_SYMBOL(pdc_get_initiator);
@@ -794,13 +821,14 @@ EXPORT_SYMBOL(pdc_get_initiator);
 int pdc_pci_irt_size(unsigned long *num_entries, unsigned long hpa)
 {
         int retval;
+        unsigned long flags;
 
-        spin_lock_irq(&pdc_lock);
+        spin_lock_irqsave(&pdc_lock, flags);
         retval = mem_pdc_call(PDC_PCI_INDEX, PDC_PCI_GET_INT_TBL_SIZE, 
                               __pa(pdc_result), hpa);
         convert_to_wide(pdc_result);
         *num_entries = pdc_result[0];
-        spin_unlock_irq(&pdc_lock);
+        spin_unlock_irqrestore(&pdc_lock, flags);
 
         return retval;
 }
@@ -817,14 +845,15 @@ int pdc_pci_irt_size(unsigned long *num_entries, unsigned long hpa)
 int pdc_pci_irt(unsigned long num_entries, unsigned long hpa, void *tbl)
 {
         int retval;
+        unsigned long flags;
 
         BUG_ON((unsigned long)tbl & 0x7);
 
-        spin_lock_irq(&pdc_lock);
+        spin_lock_irqsave(&pdc_lock, flags);
         pdc_result[0] = num_entries;
         retval = mem_pdc_call(PDC_PCI_INDEX, PDC_PCI_GET_INT_TBL, 
                               __pa(pdc_result), hpa, __pa(tbl));
-        spin_unlock_irq(&pdc_lock);
+        spin_unlock_irqrestore(&pdc_lock, flags);
 
         return retval;
 }
@@ -842,12 +871,15 @@ int pdc_pci_irt(unsigned long num_entries, unsigned long hpa, void *tbl)
 unsigned int pdc_pci_config_read(void *hpa, unsigned long cfg_addr)
 {
         int retval;
-        spin_lock_irq(&pdc_lock);
+        unsigned long flags;
+
+        spin_lock_irqsave(&pdc_lock, flags);
         pdc_result[0] = 0;
         pdc_result[1] = 0;
         retval = mem_pdc_call(PDC_PCI_INDEX, PDC_PCI_READ_CONFIG, 
                               __pa(pdc_result), hpa, cfg_addr&~3UL, 4UL);
-        spin_unlock_irq(&pdc_lock);
+        spin_unlock_irqrestore(&pdc_lock, flags);
+
         return retval ? ~0 : (unsigned int) pdc_result[0];
 }
 
@@ -863,12 +895,15 @@ unsigned int pdc_pci_config_read(void *hpa, unsigned long cfg_addr)
 void pdc_pci_config_write(void *hpa, unsigned long cfg_addr, unsigned int val)
 {
         int retval;
-        spin_lock_irq(&pdc_lock);
+        unsigned long flags;
+
+        spin_lock_irqsave(&pdc_lock, flags);
         pdc_result[0] = 0;
         retval = mem_pdc_call(PDC_PCI_INDEX, PDC_PCI_WRITE_CONFIG, 
                               __pa(pdc_result), hpa,
                               cfg_addr&~3UL, 4UL, (unsigned long) val);
-        spin_unlock_irq(&pdc_lock);
+        spin_unlock_irqrestore(&pdc_lock, flags);
+
         return retval;
 }
 #endif /* UNTESTED CODE */
@@ -882,12 +917,13 @@ void pdc_pci_config_write(void *hpa, unsigned long cfg_addr, unsigned int val)
 int pdc_tod_read(struct pdc_tod *tod)
 {
         int retval;
+        unsigned long flags;
 
-        spin_lock_irq(&pdc_lock);
+        spin_lock_irqsave(&pdc_lock, flags);
         retval = mem_pdc_call(PDC_TOD, PDC_TOD_READ, __pa(pdc_result), 0);
         convert_to_wide(pdc_result);
         memcpy(tod, pdc_result, sizeof(*tod));
-        spin_unlock_irq(&pdc_lock);
+        spin_unlock_irqrestore(&pdc_lock, flags);
 
         return retval;
 }
@@ -903,10 +939,11 @@ EXPORT_SYMBOL(pdc_tod_read);
 int pdc_tod_set(unsigned long sec, unsigned long usec)
 {
         int retval;
+        unsigned long flags;
 
-        spin_lock_irq(&pdc_lock);
+        spin_lock_irqsave(&pdc_lock, flags);
         retval = mem_pdc_call(PDC_TOD, PDC_TOD_WRITE, sec, usec);
-        spin_unlock_irq(&pdc_lock);
+        spin_unlock_irqrestore(&pdc_lock, flags);
 
         return retval;
 }
@@ -917,13 +954,14 @@ int pdc_mem_mem_table(struct pdc_memory_table_raddr *r_addr,
                 struct pdc_memory_table *tbl, unsigned long entries)
 {
         int retval;
+        unsigned long flags;
 
-        spin_lock_irq(&pdc_lock);
+        spin_lock_irqsave(&pdc_lock, flags);
         retval = mem_pdc_call(PDC_MEM, PDC_MEM_TABLE, __pa(pdc_result), __pa(pdc_result2), entries);
         convert_to_wide(pdc_result);
         memcpy(r_addr, pdc_result, sizeof(*r_addr));
         memcpy(tbl, pdc_result2, entries * sizeof(*tbl));
-        spin_unlock_irq(&pdc_lock);
+        spin_unlock_irqrestore(&pdc_lock, flags);
 
         return retval;
 }
@@ -936,11 +974,12 @@ int pdc_mem_mem_table(struct pdc_memory_table_raddr *r_addr,
 int pdc_do_firm_test_reset(unsigned long ftc_bitmap)
 {
         int retval;
+        unsigned long flags;
 
-        spin_lock_irq(&pdc_lock);
+        spin_lock_irqsave(&pdc_lock, flags);
         retval = mem_pdc_call(PDC_BROADCAST_RESET, PDC_DO_FIRM_TEST_RESET,
                               PDC_FIRM_TEST_MAGIC, ftc_bitmap);
-        spin_unlock_irq(&pdc_lock);
+        spin_unlock_irqrestore(&pdc_lock, flags);
 
         return retval;
 }
@@ -953,10 +992,11 @@ int pdc_do_firm_test_reset(unsigned long ftc_bitmap)
 int pdc_do_reset(void)
 {
         int retval;
+        unsigned long flags;
 
-        spin_lock_irq(&pdc_lock);
+        spin_lock_irqsave(&pdc_lock, flags);
         retval = mem_pdc_call(PDC_BROADCAST_RESET, PDC_DO_RESET);
-        spin_unlock_irq(&pdc_lock);
+        spin_unlock_irqrestore(&pdc_lock, flags);
 
         return retval;
 }
@@ -970,16 +1010,17 @@ int pdc_do_reset(void)
 int __init pdc_soft_power_info(unsigned long *power_reg)
 {
         int retval;
+        unsigned long flags;
 
         *power_reg = (unsigned long) (-1);
         
-        spin_lock_irq(&pdc_lock);
+        spin_lock_irqsave(&pdc_lock, flags);
         retval = mem_pdc_call(PDC_SOFT_POWER, PDC_SOFT_POWER_INFO, __pa(pdc_result), 0);
         if (retval == PDC_OK) {
                 convert_to_wide(pdc_result);
                 *power_reg = f_extend(pdc_result[0]);
         }
-        spin_unlock_irq(&pdc_lock);
+        spin_unlock_irqrestore(&pdc_lock, flags);
 
         return retval;
 }
@@ -998,9 +1039,12 @@ int __init pdc_soft_power_info(unsigned long *power_reg)
 int pdc_soft_power_button(int sw_control)
 {
         int retval;
-        spin_lock_irq(&pdc_lock);
+        unsigned long flags;
+
+        spin_lock_irqsave(&pdc_lock, flags);
         retval = mem_pdc_call(PDC_SOFT_POWER, PDC_SOFT_POWER_ENABLE, __pa(pdc_result), sw_control);
-        spin_unlock_irq(&pdc_lock);
+        spin_unlock_irqrestore(&pdc_lock, flags);
+
         return retval;
 }
 
@@ -1011,9 +1055,11 @@ int pdc_soft_power_button(int sw_control)
  */
 void pdc_io_reset(void)
 {
-        spin_lock_irq(&pdc_lock);  
+        unsigned long flags;
+
+        spin_lock_irqsave(&pdc_lock, flags);
         mem_pdc_call(PDC_IO, PDC_IO_RESET, 0);
-        spin_unlock_irq(&pdc_lock);
+        spin_unlock_irqrestore(&pdc_lock, flags);
 }
 
 /*
@@ -1027,9 +1073,11 @@ void pdc_io_reset(void)
  */
 void pdc_io_reset_devices(void)
 {
-        spin_lock_irq(&pdc_lock);  
+        unsigned long flags;
+
+        spin_lock_irqsave(&pdc_lock, flags);
         mem_pdc_call(PDC_IO, PDC_IO_RESET_DEVICES, 0);
-        spin_unlock_irq(&pdc_lock);
+        spin_unlock_irqrestore(&pdc_lock, flags);
 }
 
 
@@ -1146,10 +1194,11 @@ int pdc_sti_call(unsigned long func, unsigned long flags,
                  unsigned long glob_cfg)
 {
         int retval;
+        unsigned long irqflags;
 
-        spin_lock_irq(&pdc_lock);  
+        spin_lock_irqsave(&pdc_lock, irqflags);  
         retval = real32_call(func, flags, inptr, outputr, glob_cfg);
-        spin_unlock_irq(&pdc_lock);
+        spin_unlock_irqrestore(&pdc_lock, irqflags);
 
         return retval;
 }
@@ -1166,11 +1215,12 @@ EXPORT_SYMBOL(pdc_sti_call);
 int pdc_pat_cell_get_number(struct pdc_pat_cell_num *cell_info)
 {
         int retval;
+        unsigned long flags;
 
-        spin_lock_irq(&pdc_lock);
+        spin_lock_irqsave(&pdc_lock, flags);
         retval = mem_pdc_call(PDC_PAT_CELL, PDC_PAT_CELL_GET_NUMBER, __pa(pdc_result));
         memcpy(cell_info, pdc_result, sizeof(*cell_info));
-        spin_unlock_irq(&pdc_lock);
+        spin_unlock_irqrestore(&pdc_lock, flags);
 
         return retval;
 }
@@ -1190,16 +1240,17 @@ int pdc_pat_cell_module(unsigned long *actcnt, unsigned long ploc, unsigned long
                         unsigned long view_type, void *mem_addr)
 {
         int retval;
+        unsigned long flags;
         static struct pdc_pat_cell_mod_maddr_block result __attribute__ ((aligned (8)));
 
-        spin_lock_irq(&pdc_lock);
+        spin_lock_irqsave(&pdc_lock, flags);
         retval = mem_pdc_call(PDC_PAT_CELL, PDC_PAT_CELL_MODULE, __pa(pdc_result), 
                               ploc, mod, view_type, __pa(&result));
         if(!retval) {
                 *actcnt = pdc_result[0];
                 memcpy(mem_addr, &result, *actcnt);
         }
-        spin_unlock_irq(&pdc_lock);
+        spin_unlock_irqrestore(&pdc_lock, flags);
 
         return retval;
 }
@@ -1214,12 +1265,13 @@ int pdc_pat_cell_module(unsigned long *actcnt, unsigned long ploc, unsigned long
 int pdc_pat_cpu_get_number(struct pdc_pat_cpu_num *cpu_info, void *hpa)
 {
         int retval;
+        unsigned long flags;
 
-        spin_lock_irq(&pdc_lock);
+        spin_lock_irqsave(&pdc_lock, flags);
         retval = mem_pdc_call(PDC_PAT_CPU, PDC_PAT_CPU_GET_NUMBER,
                               __pa(&pdc_result), hpa);
         memcpy(cpu_info, pdc_result, sizeof(*cpu_info));
-        spin_unlock_irq(&pdc_lock);
+        spin_unlock_irqrestore(&pdc_lock, flags);
 
         return retval;
 }
@@ -1235,12 +1287,13 @@ int pdc_pat_cpu_get_number(struct pdc_pat_cpu_num *cpu_info, void *hpa)
 int pdc_pat_get_irt_size(unsigned long *num_entries, unsigned long cell_num)
 {
         int retval;
+        unsigned long flags;
 
-        spin_lock_irq(&pdc_lock);
+        spin_lock_irqsave(&pdc_lock, flags);
         retval = mem_pdc_call(PDC_PAT_IO, PDC_PAT_IO_GET_PCI_ROUTING_TABLE_SIZE,
                               __pa(pdc_result), cell_num);
         *num_entries = pdc_result[0];
-        spin_unlock_irq(&pdc_lock);
+        spin_unlock_irqrestore(&pdc_lock, flags);
 
         return retval;
 }
@@ -1255,11 +1308,12 @@ int pdc_pat_get_irt_size(unsigned long *num_entries, unsigned long cell_num)
 int pdc_pat_get_irt(void *r_addr, unsigned long cell_num)
 {
         int retval;
+        unsigned long flags;
 
-        spin_lock_irq(&pdc_lock);
+        spin_lock_irqsave(&pdc_lock, flags);
         retval = mem_pdc_call(PDC_PAT_IO, PDC_PAT_IO_GET_PCI_ROUTING_TABLE,
                               __pa(r_addr), cell_num);
-        spin_unlock_irq(&pdc_lock);
+        spin_unlock_irqrestore(&pdc_lock, flags);
 
         return retval;
 }
@@ -1276,13 +1330,14 @@ int pdc_pat_pd_get_addr_map(unsigned long *actual_len, void *mem_addr,
                             unsigned long count, unsigned long offset)
 {
         int retval;
+        unsigned long flags;
 
-        spin_lock_irq(&pdc_lock);
+        spin_lock_irqsave(&pdc_lock, flags);
         retval = mem_pdc_call(PDC_PAT_PD, PDC_PAT_PD_GET_ADDR_MAP, __pa(pdc_result), 
                               __pa(pdc_result2), count, offset);
         *actual_len = pdc_result[0];
         memcpy(mem_addr, pdc_result2, *actual_len);
-        spin_unlock_irq(&pdc_lock);
+        spin_unlock_irqrestore(&pdc_lock, flags);
 
         return retval;
 }
@@ -1297,7 +1352,9 @@ int pdc_pat_pd_get_addr_map(unsigned long *actual_len, void *mem_addr,
 int pdc_pat_io_pci_cfg_read(unsigned long pci_addr, int pci_size, u32 *mem_addr)
 {
         int retval;
-        spin_lock_irq(&pdc_lock);
+        unsigned long flags;
+
+        spin_lock_irqsave(&pdc_lock, flags);
         retval = mem_pdc_call(PDC_PAT_IO, PDC_PAT_IO_PCI_CONFIG_READ,
                                         __pa(pdc_result), pci_addr, pci_size);
         switch(pci_size) {
@@ -1305,7 +1362,7 @@ int pdc_pat_io_pci_cfg_read(unsigned long pci_addr, int pci_size, u32 *mem_addr)
                 case 2: *(u16 *)mem_addr =  (u16) pdc_result[0];
                 case 4: *(u32 *)mem_addr =  (u32) pdc_result[0];
         }
-        spin_unlock_irq(&pdc_lock);
+        spin_unlock_irqrestore(&pdc_lock, flags);
 
         return retval;
 }
@@ -1321,11 +1378,12 @@ int pdc_pat_io_pci_cfg_read(unsigned long pci_addr, int pci_size, u32 *mem_addr)
 int pdc_pat_io_pci_cfg_write(unsigned long pci_addr, int pci_size, u32 val)
 {
         int retval;
+        unsigned long flags;
 
-        spin_lock_irq(&pdc_lock);
+        spin_lock_irqsave(&pdc_lock, flags);
         retval = mem_pdc_call(PDC_PAT_IO, PDC_PAT_IO_PCI_CONFIG_WRITE,
                                 pci_addr, pci_size, val);
-        spin_unlock_irq(&pdc_lock);
+        spin_unlock_irqrestore(&pdc_lock, flags);
 
         return retval;
 }
diff --git a/arch/parisc/kernel/irq.c b/arch/parisc/kernel/irq.c
index 9bdd0197ceb7..b39c5b9aff46 100644
--- a/arch/parisc/kernel/irq.c
+++ b/arch/parisc/kernel/irq.c
@@ -35,8 +35,8 @@
 
 #undef PARISC_IRQ_CR16_COUNTS
 
-extern irqreturn_t timer_interrupt(int, void *, struct pt_regs *);
-extern irqreturn_t ipi_interrupt(int, void *, struct pt_regs *);
+extern irqreturn_t timer_interrupt(int, void *);
+extern irqreturn_t ipi_interrupt(int, void *);
 
 #define EIEM_MASK(irq)       (1UL<<(CPU_IRQ_MAX - irq))
 
@@ -347,12 +347,14 @@ static inline int eirr_to_irq(unsigned long eirr)
 /* ONLY called from entry.S:intr_extint() */
 void do_cpu_irq_mask(struct pt_regs *regs)
 {
+        struct pt_regs *old_regs;
         unsigned long eirr_val;
         int irq, cpu = smp_processor_id();
 #ifdef CONFIG_SMP
         cpumask_t dest;
 #endif
 
+        old_regs = set_irq_regs(regs);
         local_irq_disable();
         irq_enter();
 
@@ -375,10 +377,11 @@ void do_cpu_irq_mask(struct pt_regs *regs)
                 goto set_out;
         }
 #endif
-        __do_IRQ(irq, regs);
+        __do_IRQ(irq);
 
  out:
         irq_exit();
+        set_irq_regs(old_regs);
         return;
 
  set_out:
diff --git a/arch/parisc/kernel/smp.c b/arch/parisc/kernel/smp.c
index faad338f310e..4a23a97b06cd 100644
--- a/arch/parisc/kernel/smp.c
+++ b/arch/parisc/kernel/smp.c
@@ -154,7 +154,7 @@ halt_processor(void)
 
 
 irqreturn_t
-ipi_interrupt(int irq, void *dev_id, struct pt_regs *regs) 
+ipi_interrupt(int irq, void *dev_id) 
 {
         int this_cpu = smp_processor_id();
         struct cpuinfo_parisc *p = &cpu_data[this_cpu];
@@ -414,19 +414,6 @@ smp_flush_tlb_all(void)
         on_each_cpu(flush_tlb_all_local, NULL, 1, 1);
 }
 
-
-void 
-smp_do_timer(struct pt_regs *regs)
-{
-        int cpu = smp_processor_id();
-        struct cpuinfo_parisc *data = &cpu_data[cpu];
-
-        if (!--data->prof_counter) {
-                data->prof_counter = data->prof_multiplier;
-                update_process_times(user_mode(regs));
-        }
-}
-
 /*
  * Called by secondaries to update state and initialize CPU registers.
  */
diff --git a/arch/parisc/kernel/time.c b/arch/parisc/kernel/time.c
index 1d58ce0e37ad..bad7d1eb62b9 100644
--- a/arch/parisc/kernel/time.c
+++ b/arch/parisc/kernel/time.c
@@ -34,10 +34,6 @@
 
 static unsigned long clocktick __read_mostly;   /* timer cycles per tick */
 
-#ifdef CONFIG_SMP
-extern void smp_do_timer(struct pt_regs *regs);
-#endif
-
 /*
  * We keep time on PA-RISC Linux by using the Interval Timer which is
  * a pair of registers; one is read-only and one is write-only; both
@@ -55,21 +51,22 @@ extern void smp_do_timer(struct pt_regs *regs);
  * held off for an arbitrarily long period of time by interrupts being
  * disabled, so we may miss one or more ticks.
  */
-irqreturn_t timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+irqreturn_t timer_interrupt(int irq, void *dev_id)
 {
         unsigned long now;
         unsigned long next_tick;
         unsigned long cycles_elapsed, ticks_elapsed;
         unsigned long cycles_remainder;
         unsigned int cpu = smp_processor_id();
+        struct cpuinfo_parisc *cpuinfo = &cpu_data[cpu];
 
         /* gcc can optimize for "read-only" case with a local clocktick */
         unsigned long cpt = clocktick;
 
-        profile_tick(CPU_PROFILING, regs);
+        profile_tick(CPU_PROFILING);
 
         /* Initialize next_tick to the expected tick time. */
-        next_tick = cpu_data[cpu].it_value;
+        next_tick = cpuinfo->it_value;
 
         /* Get current interval timer.
          * CR16 reads as 64 bits in CPU wide mode.
@@ -120,7 +117,7 @@ irqreturn_t timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
          */
         next_tick = now + cycles_remainder;
 
-        cpu_data[cpu].it_value = next_tick;
+        cpuinfo->it_value = next_tick;
 
         /* Skip one clocktick on purpose if we are likely to miss next_tick.
          * We want to avoid the new next_tick being less than CR16.
@@ -131,18 +128,19 @@ irqreturn_t timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
                 next_tick += cpt;
 
         /* Program the IT when to deliver the next interrupt. */
-        /* Only bottom 32-bits of next_tick are written to cr16.  */
+        /* Only bottom 32-bits of next_tick are written to cr16.  */
         mtctl(next_tick, 16);
 
 
         /* Done mucking with unreliable delivery of interrupts.
          * Go do system house keeping.
          */
-#ifdef CONFIG_SMP
-        smp_do_timer(regs);
-#else
-        update_process_times(user_mode(regs));
-#endif
+
+        if (!--cpuinfo->prof_counter) {
+                cpuinfo->prof_counter = cpuinfo->prof_multiplier;
+                update_process_times(user_mode(get_irq_regs()));
+        }
+
         if (cpu == 0) {
                 write_seqlock(&xtime_lock);
                 do_timer(ticks_elapsed);
@@ -319,13 +317,15 @@ void __init time_init(void)
 
         start_cpu_itimer();     /* get CPU 0 started */
 
-        if(pdc_tod_read(&tod_data) == 0) {
-                write_seqlock_irq(&xtime_lock);
+        if (pdc_tod_read(&tod_data) == 0) {
+                unsigned long flags;
+
+                write_seqlock_irqsave(&xtime_lock, flags);
                 xtime.tv_sec = tod_data.tod_sec;
                 xtime.tv_nsec = tod_data.tod_usec * 1000;
                 set_normalized_timespec(&wall_to_monotonic,
                                         -xtime.tv_sec, -xtime.tv_nsec);
-                write_sequnlock_irq(&xtime_lock);
+                write_sequnlock_irqrestore(&xtime_lock, flags);
         } else {
                 printk(KERN_ERR "Error reading tod clock\n");
                 xtime.tv_sec = 0;
diff --git a/arch/powerpc/boot/Makefile b/arch/powerpc/boot/Makefile
index 003520b56303..37ddfcab0003 100644
--- a/arch/powerpc/boot/Makefile
+++ b/arch/powerpc/boot/Makefile
@@ -105,10 +105,10 @@ wrapperbits	:= $(extra-y) $(addprefix $(obj)/,addnote hack-coff)
 # Bits for building various flavours of zImage
 
 ifneq ($(CROSS32_COMPILE),)
-CROSSWRAP := -C $(CROSS32_COMPILE)
+CROSSWRAP := -C "$(CROSS32_COMPILE)"
 else
 ifneq ($(CROSS_COMPILE),)
-CROSSWRAP := -C $(CROSS_COMPILE)
+CROSSWRAP := -C "$(CROSS_COMPILE)"
 endif
 endif
 
@@ -151,12 +151,12 @@ $(obj)/zImage.initrd.miboot: vmlinux $(wrapperbits)
 $(obj)/uImage: vmlinux $(wrapperbits)
         $(call cmd,wrap,uboot)
 
-image-$(CONFIG_PPC_PSERIES)     += zImage.pseries
-image-$(CONFIG_PPC_MAPLE)       += zImage.pseries
-image-$(CONFIG_PPC_CELL)        += zImage.pseries
-image-$(CONFIG_PPC_CHRP)        += zImage.chrp
-image-$(CONFIG_PPC_PMAC)        += zImage.pmac
-image-$(CONFIG_DEFAULT_UIMAGE)  += uImage
+image-$(CONFIG_PPC_PSERIES)             += zImage.pseries
+image-$(CONFIG_PPC_MAPLE)               += zImage.pseries
+image-$(CONFIG_PPC_IBM_CELL_BLADE)      += zImage.pseries
+image-$(CONFIG_PPC_CHRP)                += zImage.chrp
+image-$(CONFIG_PPC_PMAC)                += zImage.pmac
+image-$(CONFIG_DEFAULT_UIMAGE)          += uImage
 
 # For 32-bit powermacs, build the COFF and miboot images
 # as well as the ELF images.
diff --git a/arch/powerpc/boot/dts/mpc8349emitx.dts b/arch/powerpc/boot/dts/mpc8349emitx.dts
new file mode 100644
index 000000000000..27807fc45888
--- /dev/null
+++ b/arch/powerpc/boot/dts/mpc8349emitx.dts
@@ -0,0 +1,246 @@
+/*
+ * MPC8349E-mITX Device Tree Source
+ *
+ * Copyright 2006 Freescale Semiconductor Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+/ {
+        model = "MPC8349EMITX";
+        compatible = "MPC834xMITX";
+        #address-cells = <1>;
+        #size-cells = <1>;
+
+        cpus {
+                #cpus = <1>;
+                #address-cells = <1>;
+                #size-cells = <0>;
+
+                PowerPC,8349@0 {
+                        device_type = "cpu";
+                        reg = <0>;
+                        d-cache-line-size = <20>;
+                        i-cache-line-size = <20>;
+                        d-cache-size = <8000>;
+                        i-cache-size = <8000>;
+                        timebase-frequency = <0>;       // from bootloader
+                        bus-frequency = <0>;            // from bootloader
+                        clock-frequency = <0>;          // from bootloader
+                        32-bit;
+                };
+        };
+
+        memory {
+                device_type = "memory";
+                reg = <00000000 10000000>;
+        };
+
+        soc8349@e0000000 {
+                #address-cells = <1>;
+                #size-cells = <1>;
+                #interrupt-cells = <2>;
+                device_type = "soc";
+                ranges = <0 e0000000 00100000>;
+                reg = <e0000000 00000200>;
+                bus-frequency = <0>;                    // from bootloader
+
+                wdt@200 {
+                        device_type = "watchdog";
+                        compatible = "mpc83xx_wdt";
+                        reg = <200 100>;
+                };
+
+                i2c@3000 {
+                        device_type = "i2c";
+                        compatible = "fsl-i2c";
+                        reg = <3000 100>;
+                        interrupts = <e 8>;
+                        interrupt-parent = <700>;
+                        dfsrr;
+                };
+
+                i2c@3100 {
+                        device_type = "i2c";
+                        compatible = "fsl-i2c";
+                        reg = <3100 100>;
+                        interrupts = <f 8>;
+                        interrupt-parent = <700>;
+                        dfsrr;
+                };
+
+                spi@7000 {
+                        device_type = "spi";
+                        compatible = "mpc83xx_spi";
+                        reg = <7000 1000>;
+                        interrupts = <10 8>;
+                        interrupt-parent = <700>;
+                        mode = <0>;
+                };
+
+                usb@22000 {
+                        device_type = "usb";
+                        compatible = "fsl-usb2-mph";
+                        reg = <22000 1000>;
+                        #address-cells = <1>;
+                        #size-cells = <0>;
+                        interrupt-parent = <700>;
+                        interrupts = <27 2>;
+                        phy_type = "ulpi";
+                        port1;
+                };
+
+                usb@23000 {
+                        device_type = "usb";
+                        compatible = "fsl-usb2-dr";
+                        reg = <23000 1000>;
+                        #address-cells = <1>;
+                        #size-cells = <0>;
+                        interrupt-parent = <700>;
+                        interrupts = <26 2>;
+                        phy_type = "ulpi";
+                };
+
+                mdio@24520 {
+                        device_type = "mdio";
+                        compatible = "gianfar";
+                        reg = <24520 20>;
+                        #address-cells = <1>;
+                        #size-cells = <0>;
+                        linux,phandle = <24520>;
+
+                        /* Vitesse 8201 */
+                        ethernet-phy@1c {
+                                linux,phandle = <245201c>;
+                                interrupt-parent = <700>;
+                                interrupts = <12 2>;
+                                reg = <1c>;
+                                device_type = "ethernet-phy";
+                        };
+
+                        /* Vitesse 7385 */
+                        ethernet-phy@1f {
+                                linux,phandle = <245201f>;
+                                interrupt-parent = <700>;
+                                interrupts = <12 2>;
+                                reg = <1f>;
+                                device_type = "ethernet-phy";
+                        };
+                };
+
+                ethernet@24000 {
+                        device_type = "network";
+                        model = "TSEC";
+                        compatible = "gianfar";
+                        reg = <24000 1000>;
+                        address = [ 00 00 00 00 00 00 ];
+                        local-mac-address = [ 00 00 00 00 00 00 ];
+                        interrupts = <20 8 21 8 22 8>;
+                        interrupt-parent = <700>;
+                        phy-handle = <245201c>;
+                };
+
+                ethernet@25000 {
+                        #address-cells = <1>;
+                        #size-cells = <0>;
+                        device_type = "network";
+                        model = "TSEC";
+                        compatible = "gianfar";
+                        reg = <25000 1000>;
+                        address = [ 00 00 00 00 00 00 ];
+                        local-mac-address = [ 00 00 00 00 00 00 ];
+                        interrupts = <23 8 24 8 25 8>;
+                        interrupt-parent = <700>;
+                        phy-handle = <245201f>;
+                };
+
+                serial@4500 {
+                        device_type = "serial";
+                        compatible = "ns16550";
+                        reg = <4500 100>;
+                        clock-frequency = <0>;          // from bootloader
+                        interrupts = <9 8>;
+                        interrupt-parent = <700>;
+                };
+
+                serial@4600 {
+                        device_type = "serial";
+                        compatible = "ns16550";
+                        reg = <4600 100>;
+                        clock-frequency = <0>;          // from bootloader
+                        interrupts = <a 8>;
+                        interrupt-parent = <700>;
+                };
+
+                pci@8500 {
+                        interrupt-map-mask = <f800 0 0 7>;
+                        interrupt-map = <
+                                        /* IDSEL 0x10 - SATA */
+                                        8000 0 0 1 700 16 8 /* SATA_INTA */
+                                        >;
+                        interrupt-parent = <700>;
+                        interrupts = <42 8>;
+                        bus-range = <0 0>;
+                        ranges = <42000000 0 80000000 80000000 0 10000000
+                                  02000000 0 90000000 90000000 0 10000000
+                                  01000000 0 00000000 e2000000 0 01000000>;
+                        clock-frequency = <3f940aa>;
+                        #interrupt-cells = <1>;
+                        #size-cells = <2>;
+                        #address-cells = <3>;
+                        reg = <8500 100>;
+                        compatible = "83xx";
+                        device_type = "pci";
+                };
+
+                pci@8600 {
+                        interrupt-map-mask = <f800 0 0 7>;
+                        interrupt-map = <
+                                        /* IDSEL 0x0E - MiniPCI Slot */
+                                        7000 0 0 1 700 15 8 /* PCI_INTA */
+
+                                        /* IDSEL 0x0F - PCI Slot */
+                                        7800 0 0 1 700 14 8 /* PCI_INTA */
+                                        7800 0 0 2 700 15 8 /* PCI_INTB */
+                                         >;
+                        interrupt-parent = <700>;
+                        interrupts = <43 8>;
+                        bus-range = <1 1>;
+                        ranges = <42000000 0 a0000000 a0000000 0 10000000
+                                  02000000 0 b0000000 b0000000 0 10000000
+                                  01000000 0 00000000 e3000000 0 01000000>;
+                        clock-frequency = <3f940aa>;
+                        #interrupt-cells = <1>;
+                        #size-cells = <2>;
+                        #address-cells = <3>;
+                        reg = <8600 100>;
+                        compatible = "83xx";
+                        device_type = "pci";
+                };
+
+                crypto@30000 {
+                        device_type = "crypto";
+                        model = "SEC2";
+                        compatible = "talitos";
+                        reg = <30000 10000>;
+                        interrupts = <b 8>;
+                        interrupt-parent = <700>;
+                        num-channels = <4>;
+                        channel-fifo-len = <18>;
+                        exec-units-mask = <0000007e>;
+                        descriptor-types-mask = <01010ebf>;
+                };
+
+                pic@700 {
+                        linux,phandle = <700>;
+                        interrupt-controller;
+                        #address-cells = <0>;
+                        #interrupt-cells = <2>;
+                        reg = <700 100>;
+                        built-in;
+                        device_type = "ipic";
+                };
+        };
+};
diff --git a/arch/powerpc/boot/of.c b/arch/powerpc/boot/of.c
index fd99f789a37b..3a71845afc6c 100644
--- a/arch/powerpc/boot/of.c
+++ b/arch/powerpc/boot/of.c
@@ -176,12 +176,9 @@ static void *claim(unsigned long virt, unsigned long size, unsigned long align)
 static void *of_try_claim(u32 size)
 {
         unsigned long addr = 0;
-        static u8 first_time = 1;
 
-        if (first_time) {
+        if (claim_base == 0)
                 claim_base = _ALIGN_UP((unsigned long)_end, ONE_MB);
-                first_time = 0;
-        }
 
         for(; claim_base < RAM_END; claim_base += ONE_MB) {
 #ifdef DEBUG
diff --git a/arch/powerpc/configs/iseries_defconfig b/arch/powerpc/configs/iseries_defconfig
index d58f82f836f8..b5005506c2f8 100644
--- a/arch/powerpc/configs/iseries_defconfig
+++ b/arch/powerpc/configs/iseries_defconfig
@@ -1,7 +1,7 @@
 #
 # Automatically generated make config: don't edit
-# Linux kernel version: 2.6.18-rc6
-# Sun Sep 10 10:22:57 2006
+# Linux kernel version: 2.6.19-rc1
+# Fri Oct  6 13:25:04 2006
 #
 CONFIG_PPC64=y
 CONFIG_64BIT=y
@@ -22,6 +22,7 @@ CONFIG_ARCH_MAY_HAVE_PC_FDC=y
 CONFIG_PPC_OF=y
 # CONFIG_PPC_UDBG_16550 is not set
 # CONFIG_GENERIC_TBSYNC is not set
+CONFIG_AUDIT_ARCH=y
 # CONFIG_DEFAULT_UIMAGE is not set
 
 #
@@ -52,10 +53,11 @@ CONFIG_LOCALVERSION=""
 CONFIG_LOCALVERSION_AUTO=y
 CONFIG_SWAP=y
 CONFIG_SYSVIPC=y
+# CONFIG_IPC_NS is not set
 CONFIG_POSIX_MQUEUE=y
 # CONFIG_BSD_PROCESS_ACCT is not set
 # CONFIG_TASKSTATS is not set
-CONFIG_SYSCTL=y
+# CONFIG_UTS_NS is not set
 CONFIG_AUDIT=y
 CONFIG_AUDITSYSCALL=y
 CONFIG_IKCONFIG=y
@@ -64,7 +66,9 @@ CONFIG_IKCONFIG_PROC=y
 # CONFIG_RELAY is not set
 CONFIG_INITRAMFS_SOURCE=""
 CONFIG_CC_OPTIMIZE_FOR_SIZE=y
+CONFIG_SYSCTL=y
 # CONFIG_EMBEDDED is not set
+# CONFIG_SYSCTL_SYSCALL is not set
 CONFIG_KALLSYMS=y
 # CONFIG_KALLSYMS_ALL is not set
 # CONFIG_KALLSYMS_EXTRA_PASS is not set
@@ -73,12 +77,12 @@ CONFIG_PRINTK=y
 CONFIG_BUG=y
 CONFIG_ELF_CORE=y
 CONFIG_BASE_FULL=y
-CONFIG_RT_MUTEXES=y
 CONFIG_FUTEX=y
 CONFIG_EPOLL=y
 CONFIG_SHMEM=y
 CONFIG_SLAB=y
 CONFIG_VM_EVENT_COUNTERS=y
+CONFIG_RT_MUTEXES=y
 # CONFIG_TINY_SHMEM is not set
 CONFIG_BASE_SMALL=0
 # CONFIG_SLOB is not set
@@ -97,6 +101,7 @@ CONFIG_STOP_MACHINE=y
 #
 # Block layer
 #
+CONFIG_BLOCK=y
 # CONFIG_BLK_DEV_IO_TRACE is not set
 
 #
@@ -115,13 +120,18 @@ CONFIG_DEFAULT_IOSCHED="anticipatory"
 #
 # Platform support
 #
-# CONFIG_PPC_MULTIPLATFORM is not set
-CONFIG_PPC_ISERIES=y
+CONFIG_PPC_MULTIPLATFORM=y
 # CONFIG_EMBEDDED6xx is not set
 # CONFIG_APUS is not set
+# CONFIG_PPC_PSERIES is not set
+CONFIG_PPC_ISERIES=y
+# CONFIG_PPC_PMAC is not set
+# CONFIG_PPC_MAPLE is not set
+# CONFIG_PPC_PASEMI is not set
 # CONFIG_PPC_CELL is not set
 # CONFIG_PPC_CELL_NATIVE is not set
-# CONFIG_UDBG_RTAS_CONSOLE is not set
+# CONFIG_PPC_IBM_CELL_BLADE is not set
+# CONFIG_U3_DART is not set
 # CONFIG_PPC_RTAS is not set
 # CONFIG_MMIO_NVRAM is not set
 CONFIG_IBMVIO=y
@@ -147,12 +157,15 @@ CONFIG_BINFMT_ELF=y
 CONFIG_FORCE_MAX_ZONEORDER=13
 CONFIG_IOMMU_VMERGE=y
 CONFIG_ARCH_ENABLE_MEMORY_HOTPLUG=y
+# CONFIG_KEXEC is not set
+# CONFIG_CRASH_DUMP is not set
 CONFIG_IRQ_ALL_CPUS=y
 CONFIG_LPARCFG=y
 # CONFIG_NUMA is not set
 CONFIG_ARCH_SELECT_MEMORY_MODEL=y
 CONFIG_ARCH_FLATMEM_ENABLE=y
 CONFIG_ARCH_SPARSEMEM_ENABLE=y
+CONFIG_ARCH_POPULATES_NODE_MAP=y
 CONFIG_SELECT_MEMORY_MODEL=y
 CONFIG_FLATMEM_MANUAL=y
 # CONFIG_DISCONTIGMEM_MANUAL is not set
@@ -179,6 +192,7 @@ CONFIG_GENERIC_ISA_DMA=y
 CONFIG_PCI=y
 CONFIG_PCI_DOMAINS=y
 # CONFIG_PCIEPORTBUS is not set
+# CONFIG_PCI_MULTITHREAD_PROBE is not set
 # CONFIG_PCI_DEBUG is not set
 
 #
@@ -206,6 +220,7 @@ CONFIG_PACKET=y
 CONFIG_UNIX=y
 CONFIG_XFRM=y
 CONFIG_XFRM_USER=m
+CONFIG_XFRM_SUB_POLICY=y
 CONFIG_NET_KEY=m
 CONFIG_INET=y
 CONFIG_IP_MULTICAST=y
@@ -224,10 +239,12 @@ CONFIG_INET_XFRM_TUNNEL=m
 CONFIG_INET_TUNNEL=y
 CONFIG_INET_XFRM_MODE_TRANSPORT=y
 CONFIG_INET_XFRM_MODE_TUNNEL=y
+CONFIG_INET_XFRM_MODE_BEET=m
 CONFIG_INET_DIAG=y
 CONFIG_INET_TCP_DIAG=y
 # CONFIG_TCP_CONG_ADVANCED is not set
-CONFIG_TCP_CONG_BIC=y
+CONFIG_TCP_CONG_CUBIC=y
+CONFIG_DEFAULT_TCP_CONG="cubic"
 
 #
 # IP: Virtual Server Configuration
@@ -247,6 +264,7 @@ CONFIG_NETFILTER=y
 CONFIG_NETFILTER_XTABLES=m
 CONFIG_NETFILTER_XT_TARGET_CLASSIFY=m
 CONFIG_NETFILTER_XT_TARGET_CONNMARK=m
+CONFIG_NETFILTER_XT_TARGET_DSCP=m
 CONFIG_NETFILTER_XT_TARGET_MARK=m
 CONFIG_NETFILTER_XT_TARGET_NFQUEUE=m
 CONFIG_NETFILTER_XT_TARGET_NOTRACK=m
@@ -255,6 +273,7 @@ CONFIG_NETFILTER_XT_MATCH_CONNBYTES=m
 CONFIG_NETFILTER_XT_MATCH_CONNMARK=m
 CONFIG_NETFILTER_XT_MATCH_CONNTRACK=m
 # CONFIG_NETFILTER_XT_MATCH_DCCP is not set
+CONFIG_NETFILTER_XT_MATCH_DSCP=m
 # CONFIG_NETFILTER_XT_MATCH_ESP is not set
 CONFIG_NETFILTER_XT_MATCH_HELPER=m
 CONFIG_NETFILTER_XT_MATCH_LENGTH=m
@@ -294,7 +313,6 @@ CONFIG_IP_NF_MATCH_IPRANGE=m
 CONFIG_IP_NF_MATCH_TOS=m
 CONFIG_IP_NF_MATCH_RECENT=m
 CONFIG_IP_NF_MATCH_ECN=m
-CONFIG_IP_NF_MATCH_DSCP=m
 # CONFIG_IP_NF_MATCH_AH is not set
 CONFIG_IP_NF_MATCH_TTL=m
 CONFIG_IP_NF_MATCH_OWNER=m
@@ -319,7 +337,6 @@ CONFIG_IP_NF_NAT_AMANDA=m
 CONFIG_IP_NF_MANGLE=m
 CONFIG_IP_NF_TARGET_TOS=m
 CONFIG_IP_NF_TARGET_ECN=m
-CONFIG_IP_NF_TARGET_DSCP=m
 CONFIG_IP_NF_TARGET_TTL=m
 CONFIG_IP_NF_TARGET_CLUSTERIP=m
 CONFIG_IP_NF_RAW=m
@@ -351,7 +368,6 @@ CONFIG_LLC=y
 # CONFIG_ATALK is not set
 # CONFIG_X25 is not set
 # CONFIG_LAPB is not set
-# CONFIG_NET_DIVERT is not set
 # CONFIG_ECONET is not set
 # CONFIG_WAN_ROUTER is not set
 
@@ -433,6 +449,7 @@ CONFIG_BLK_DEV_INITRD=y
 #
 # CONFIG_RAID_ATTRS is not set
 CONFIG_SCSI=y
+CONFIG_SCSI_NETLINK=y
 CONFIG_SCSI_PROC_FS=y
 
 #
@@ -454,12 +471,14 @@ CONFIG_SCSI_CONSTANTS=y
 # CONFIG_SCSI_LOGGING is not set
 
 #
-# SCSI Transport Attributes
+# SCSI Transports
 #
 CONFIG_SCSI_SPI_ATTRS=y
 CONFIG_SCSI_FC_ATTRS=y
 # CONFIG_SCSI_ISCSI_ATTRS is not set
-# CONFIG_SCSI_SAS_ATTRS is not set
+CONFIG_SCSI_SAS_ATTRS=m
+CONFIG_SCSI_SAS_LIBSAS=m
+CONFIG_SCSI_SAS_LIBSAS_DEBUG=y
 
 #
 # SCSI low-level drivers
@@ -472,10 +491,11 @@ CONFIG_SCSI_FC_ATTRS=y
 # CONFIG_SCSI_AIC7XXX is not set
 # CONFIG_SCSI_AIC7XXX_OLD is not set
 # CONFIG_SCSI_AIC79XX is not set
+# CONFIG_SCSI_AIC94XX is not set
+# CONFIG_SCSI_ARCMSR is not set
 # CONFIG_MEGARAID_NEWGEN is not set
 # CONFIG_MEGARAID_LEGACY is not set
 # CONFIG_MEGARAID_SAS is not set
-# CONFIG_ATA is not set
 # CONFIG_SCSI_HPTIOP is not set
 # CONFIG_SCSI_BUSLOGIC is not set
 # CONFIG_SCSI_DMX3191D is not set
@@ -486,16 +506,22 @@ CONFIG_SCSI_FC_ATTRS=y
 CONFIG_SCSI_IBMVSCSI=m
 # CONFIG_SCSI_INITIO is not set
 # CONFIG_SCSI_INIA100 is not set
+# CONFIG_SCSI_STEX is not set
 # CONFIG_SCSI_SYM53C8XX_2 is not set
-# CONFIG_SCSI_IPR is not set
 # CONFIG_SCSI_QLOGIC_1280 is not set
 # CONFIG_SCSI_QLA_FC is not set
+# CONFIG_SCSI_QLA_ISCSI is not set
 # CONFIG_SCSI_LPFC is not set
 # CONFIG_SCSI_DC395x is not set
 # CONFIG_SCSI_DC390T is not set
 # CONFIG_SCSI_DEBUG is not set
 
 #
+# Serial ATA (prod) and Parallel ATA (experimental) drivers
+#
+# CONFIG_ATA is not set
+
+#
 # Multi-device support (RAID and LVM)
 #
 CONFIG_MD=y
@@ -508,6 +534,7 @@ CONFIG_MD_RAID10=m
 CONFIG_MD_MULTIPATH=m
 CONFIG_MD_FAULTY=m
 CONFIG_BLK_DEV_DM=y
+# CONFIG_DM_DEBUG is not set
 CONFIG_DM_CRYPT=m
 CONFIG_DM_SNAPSHOT=m
 CONFIG_DM_MIRROR=m
@@ -573,6 +600,7 @@ CONFIG_MII=y
 # CONFIG_HP100 is not set
 CONFIG_NET_PCI=y
 CONFIG_PCNET32=y
+CONFIG_PCNET32_NAPI=y
 # CONFIG_AMD8111_ETH is not set
 # CONFIG_ADAPTEC_STARFIRE is not set
 # CONFIG_B44 is not set
@@ -610,6 +638,7 @@ CONFIG_E1000=m
 # CONFIG_VIA_VELOCITY is not set
 # CONFIG_TIGON3 is not set
 # CONFIG_BNX2 is not set
+# CONFIG_QLA3XXX is not set
 
 #
 # Ethernet (10000 Mbit)
@@ -649,6 +678,7 @@ CONFIG_PPP_BSDCOMP=m
 # CONFIG_PPP_MPPE is not set
 CONFIG_PPPOE=m
 # CONFIG_SLIP is not set
+CONFIG_SLHC=m
 # CONFIG_NET_FC is not set
 # CONFIG_SHAPER is not set
 CONFIG_NETCONSOLE=y
@@ -671,6 +701,7 @@ CONFIG_NET_POLL_CONTROLLER=y
 # Input device support
 #
 CONFIG_INPUT=y
+# CONFIG_INPUT_FF_MEMLESS is not set
 
 #
 # Userland interfaces
@@ -774,12 +805,12 @@ CONFIG_MAX_RAW_DEVS=256
 #
 # Misc devices
 #
+# CONFIG_TIFM_CORE is not set
 
 #
 # Multimedia devices
 #
 # CONFIG_VIDEO_DEV is not set
-CONFIG_VIDEO_V4L2=y
 
 #
 # Digital Video Broadcasting Devices
@@ -893,6 +924,9 @@ CONFIG_XFS_FS=m
 CONFIG_XFS_SECURITY=y
 CONFIG_XFS_POSIX_ACL=y
 # CONFIG_XFS_RT is not set
+CONFIG_GFS2_FS=m
+CONFIG_GFS2_FS_LOCKING_NOLOCK=m
+CONFIG_GFS2_FS_LOCKING_DLM=m
 # CONFIG_OCFS2_FS is not set
 # CONFIG_MINIX_FS is not set
 # CONFIG_ROMFS_FS is not set
@@ -929,12 +963,14 @@ CONFIG_FAT_DEFAULT_IOCHARSET="iso8859-1"
 #
 CONFIG_PROC_FS=y
 CONFIG_PROC_KCORE=y
+CONFIG_PROC_SYSCTL=y
 CONFIG_SYSFS=y
 CONFIG_TMPFS=y
+CONFIG_TMPFS_POSIX_ACL=y
 # CONFIG_HUGETLBFS is not set
 # CONFIG_HUGETLB_PAGE is not set
 CONFIG_RAMFS=y
-# CONFIG_CONFIGFS_FS is not set
+CONFIG_CONFIGFS_FS=m
 
 #
 # Miscellaneous filesystems
@@ -988,6 +1024,7 @@ CONFIG_CIFS_POSIX=y
 # CONFIG_CODA_FS is not set
 # CONFIG_AFS_FS is not set
 # CONFIG_9P_FS is not set
+CONFIG_GENERIC_ACL=y
 
 #
 # Partition Types
@@ -1040,6 +1077,12 @@ CONFIG_NLS_ISO8859_1=y
 # CONFIG_NLS_UTF8 is not set
 
 #
+# Distributed Lock Manager
+#
+CONFIG_DLM=m
+# CONFIG_DLM_DEBUG is not set
+
+#
 # iSeries device drivers
 #
 CONFIG_VIOCONS=y
@@ -1073,6 +1116,7 @@ CONFIG_PLIST=y
 # Kernel hacking
 #
 # CONFIG_PRINTK_TIME is not set
+CONFIG_ENABLE_MUST_CHECK=y
 CONFIG_MAGIC_SYSRQ=y
 # CONFIG_UNUSED_SYMBOLS is not set
 CONFIG_DEBUG_KERNEL=y
@@ -1091,6 +1135,7 @@ CONFIG_DETECT_SOFTLOCKUP=y
 # CONFIG_DEBUG_INFO is not set
 CONFIG_DEBUG_FS=y
 # CONFIG_DEBUG_VM is not set
+# CONFIG_DEBUG_LIST is not set
 # CONFIG_FORCED_INLINING is not set
 # CONFIG_RCU_TORTURE_TEST is not set
 CONFIG_DEBUG_STACKOVERFLOW=y
@@ -1109,6 +1154,10 @@ CONFIG_IRQSTACKS=y
 # Cryptographic options
 #
 CONFIG_CRYPTO=y
+CONFIG_CRYPTO_ALGAPI=y
+CONFIG_CRYPTO_BLKCIPHER=m
+CONFIG_CRYPTO_HASH=y
+CONFIG_CRYPTO_MANAGER=m
 CONFIG_CRYPTO_HMAC=y
 CONFIG_CRYPTO_NULL=m
 CONFIG_CRYPTO_MD4=m
@@ -1118,9 +1167,12 @@ CONFIG_CRYPTO_SHA256=m
 CONFIG_CRYPTO_SHA512=m
 CONFIG_CRYPTO_WP512=m
 CONFIG_CRYPTO_TGR192=m
+CONFIG_CRYPTO_ECB=m
+CONFIG_CRYPTO_CBC=m
 CONFIG_CRYPTO_DES=y
 CONFIG_CRYPTO_BLOWFISH=m
 CONFIG_CRYPTO_TWOFISH=m
+CONFIG_CRYPTO_TWOFISH_COMMON=m
 CONFIG_CRYPTO_SERPENT=m
 CONFIG_CRYPTO_AES=m
 CONFIG_CRYPTO_CAST5=m
diff --git a/arch/powerpc/configs/maple_defconfig b/arch/powerpc/configs/maple_defconfig
index 62ba66091a13..ae96a5b2f00d 100644
--- a/arch/powerpc/configs/maple_defconfig
+++ b/arch/powerpc/configs/maple_defconfig
@@ -1,7 +1,7 @@
 #
 # Automatically generated make config: don't edit
-# Linux kernel version: 2.6.18-rc6
-# Sun Sep 10 10:24:55 2006
+# Linux kernel version: 2.6.18
+# Mon Oct  9 11:59:34 2006
 #
 CONFIG_PPC64=y
 CONFIG_64BIT=y
@@ -22,6 +22,7 @@ CONFIG_ARCH_MAY_HAVE_PC_FDC=y
 CONFIG_PPC_OF=y
 CONFIG_PPC_UDBG_16550=y
 CONFIG_GENERIC_TBSYNC=y
+CONFIG_AUDIT_ARCH=y
 # CONFIG_DEFAULT_UIMAGE is not set
 
 #
@@ -34,7 +35,7 @@ CONFIG_PPC_FPU=y
 CONFIG_PPC_STD_MMU=y
 CONFIG_VIRT_CPU_ACCOUNTING=y
 CONFIG_SMP=y
-CONFIG_NR_CPUS=2
+CONFIG_NR_CPUS=4
 CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
 
 #
@@ -51,10 +52,11 @@ CONFIG_LOCALVERSION=""
 CONFIG_LOCALVERSION_AUTO=y
 CONFIG_SWAP=y
 CONFIG_SYSVIPC=y
+# CONFIG_IPC_NS is not set
 CONFIG_POSIX_MQUEUE=y
 # CONFIG_BSD_PROCESS_ACCT is not set
 # CONFIG_TASKSTATS is not set
-CONFIG_SYSCTL=y
+# CONFIG_UTS_NS is not set
 # CONFIG_AUDIT is not set
 CONFIG_IKCONFIG=y
 CONFIG_IKCONFIG_PROC=y
@@ -62,7 +64,9 @@ CONFIG_IKCONFIG_PROC=y
 # CONFIG_RELAY is not set
 CONFIG_INITRAMFS_SOURCE=""
 CONFIG_CC_OPTIMIZE_FOR_SIZE=y
+CONFIG_SYSCTL=y
 # CONFIG_EMBEDDED is not set
+# CONFIG_SYSCTL_SYSCALL is not set
 CONFIG_KALLSYMS=y
 CONFIG_KALLSYMS_ALL=y
 # CONFIG_KALLSYMS_EXTRA_PASS is not set
@@ -71,12 +75,12 @@ CONFIG_PRINTK=y
 CONFIG_BUG=y
 CONFIG_ELF_CORE=y
 CONFIG_BASE_FULL=y
-CONFIG_RT_MUTEXES=y
 CONFIG_FUTEX=y
 CONFIG_EPOLL=y
 CONFIG_SHMEM=y
 CONFIG_SLAB=y
 CONFIG_VM_EVENT_COUNTERS=y
+CONFIG_RT_MUTEXES=y
 # CONFIG_TINY_SHMEM is not set
 CONFIG_BASE_SMALL=0
 # CONFIG_SLOB is not set
@@ -95,6 +99,7 @@ CONFIG_STOP_MACHINE=y
 #
 # Block layer
 #
+CONFIG_BLOCK=y
 # CONFIG_BLK_DEV_IO_TRACE is not set
 
 #
@@ -114,16 +119,16 @@ CONFIG_DEFAULT_IOSCHED="anticipatory"
 # Platform support
 #
 CONFIG_PPC_MULTIPLATFORM=y
-# CONFIG_PPC_ISERIES is not set
 # CONFIG_EMBEDDED6xx is not set
 # CONFIG_APUS is not set
 # CONFIG_PPC_PSERIES is not set
+# CONFIG_PPC_ISERIES is not set
 # CONFIG_PPC_PMAC is not set
 CONFIG_PPC_MAPLE=y
+# CONFIG_PPC_PASEMI is not set
 # CONFIG_PPC_CELL is not set
 # CONFIG_PPC_CELL_NATIVE is not set
 # CONFIG_PPC_IBM_CELL_BLADE is not set
-# CONFIG_UDBG_RTAS_CONSOLE is not set
 CONFIG_U3_DART=y
 # CONFIG_PPC_RTAS is not set
 # CONFIG_MMIO_NVRAM is not set
@@ -157,6 +162,7 @@ CONFIG_IRQ_ALL_CPUS=y
 CONFIG_ARCH_SELECT_MEMORY_MODEL=y
 CONFIG_ARCH_FLATMEM_ENABLE=y
 CONFIG_ARCH_SPARSEMEM_ENABLE=y
+CONFIG_ARCH_POPULATES_NODE_MAP=y
 CONFIG_SELECT_MEMORY_MODEL=y
 CONFIG_FLATMEM_MANUAL=y
 # CONFIG_DISCONTIGMEM_MANUAL is not set
@@ -184,6 +190,7 @@ CONFIG_GENERIC_ISA_DMA=y
 CONFIG_PCI=y
 CONFIG_PCI_DOMAINS=y
 # CONFIG_PCIEPORTBUS is not set
+# CONFIG_PCI_MULTITHREAD_PROBE is not set
 # CONFIG_PCI_DEBUG is not set
 
 #
@@ -211,6 +218,7 @@ CONFIG_PACKET_MMAP=y
 CONFIG_UNIX=y
 CONFIG_XFRM=y
 CONFIG_XFRM_USER=m
+# CONFIG_XFRM_SUB_POLICY is not set
 # CONFIG_NET_KEY is not set
 CONFIG_INET=y
 CONFIG_IP_MULTICAST=y
@@ -232,10 +240,12 @@ CONFIG_IP_PNP_DHCP=y
 # CONFIG_INET_TUNNEL is not set
 CONFIG_INET_XFRM_MODE_TRANSPORT=y
 CONFIG_INET_XFRM_MODE_TUNNEL=y
+CONFIG_INET_XFRM_MODE_BEET=y
 CONFIG_INET_DIAG=y
 CONFIG_INET_TCP_DIAG=y
 # CONFIG_TCP_CONG_ADVANCED is not set
-CONFIG_TCP_CONG_BIC=y
+CONFIG_TCP_CONG_CUBIC=y
+CONFIG_DEFAULT_TCP_CONG="cubic"
 # CONFIG_IPV6 is not set
 # CONFIG_INET6_XFRM_TUNNEL is not set
 # CONFIG_INET6_TUNNEL is not set
@@ -265,7 +275,6 @@ CONFIG_TCP_CONG_BIC=y
 # CONFIG_ATALK is not set
 # CONFIG_X25 is not set
 # CONFIG_LAPB is not set
-# CONFIG_NET_DIVERT is not set
 # CONFIG_ECONET is not set
 # CONFIG_WAN_ROUTER is not set
 
@@ -377,6 +386,7 @@ CONFIG_BLK_DEV_AMD74XX=y
 # CONFIG_BLK_DEV_CS5530 is not set
 # CONFIG_BLK_DEV_HPT34X is not set
 # CONFIG_BLK_DEV_HPT366 is not set
+# CONFIG_BLK_DEV_JMICRON is not set
 # CONFIG_BLK_DEV_SC1200 is not set
 # CONFIG_BLK_DEV_PIIX is not set
 # CONFIG_BLK_DEV_IT821X is not set
@@ -399,6 +409,12 @@ CONFIG_IDEDMA_AUTO=y
 #
 # CONFIG_RAID_ATTRS is not set
 # CONFIG_SCSI is not set
+# CONFIG_SCSI_NETLINK is not set
+
+#
+# Serial ATA (prod) and Parallel ATA (experimental) drivers
+#
+# CONFIG_ATA is not set
 
 #
 # Multi-device support (RAID and LVM)
@@ -498,7 +514,7 @@ CONFIG_E1000=y
 # CONFIG_VIA_VELOCITY is not set
 CONFIG_TIGON3=y
 # CONFIG_BNX2 is not set
-# CONFIG_MV643XX_ETH is not set
+# CONFIG_QLA3XXX is not set
 
 #
 # Ethernet (10000 Mbit)
@@ -545,6 +561,7 @@ CONFIG_TIGON3=y
 # Input device support
 #
 CONFIG_INPUT=y
+# CONFIG_INPUT_FF_MEMLESS is not set
 
 #
 # Userland interfaces
@@ -704,6 +721,7 @@ CONFIG_I2C_AMD8111=y
 #
 # Misc devices
 #
+# CONFIG_TIFM_CORE is not set
 
 #
 # Multimedia devices
@@ -779,7 +797,6 @@ CONFIG_USB_UHCI_HCD=y
 #
 # may also be needed; see USB_STORAGE Help for more information
 #
-# CONFIG_USB_STORAGE is not set
 # CONFIG_USB_LIBUSUAL is not set
 
 #
@@ -802,6 +819,7 @@ CONFIG_USB_HIDINPUT=y
 # CONFIG_USB_ATI_REMOTE2 is not set
 # CONFIG_USB_KEYSPAN_REMOTE is not set
 # CONFIG_USB_APPLETOUCH is not set
+# CONFIG_USB_TRANCEVIBRATOR is not set
 
 #
 # USB Imaging devices
@@ -828,6 +846,7 @@ CONFIG_USB_MON=y
 CONFIG_USB_SERIAL=y
 # CONFIG_USB_SERIAL_CONSOLE is not set
 CONFIG_USB_SERIAL_GENERIC=y
+# CONFIG_USB_SERIAL_AIRCABLE is not set
 # CONFIG_USB_SERIAL_AIRPRIME is not set
 # CONFIG_USB_SERIAL_ARK3116 is not set
 # CONFIG_USB_SERIAL_BELKIN is not set
@@ -862,6 +881,7 @@ CONFIG_USB_SERIAL_KEYSPAN_USA49WLC=y
 # CONFIG_USB_SERIAL_KLSI is not set
 # CONFIG_USB_SERIAL_KOBIL_SCT is not set
 # CONFIG_USB_SERIAL_MCT_U232 is not set
+# CONFIG_USB_SERIAL_MOS7840 is not set
 # CONFIG_USB_SERIAL_NAVMAN is not set
 # CONFIG_USB_SERIAL_PL2303 is not set
 # CONFIG_USB_SERIAL_HP4X is not set
@@ -879,6 +899,7 @@ CONFIG_USB_EZUSB=y
 #
 # CONFIG_USB_EMI62 is not set
 # CONFIG_USB_EMI26 is not set
+# CONFIG_USB_ADUTUX is not set
 # CONFIG_USB_AUERSWALD is not set
 # CONFIG_USB_RIO500 is not set
 # CONFIG_USB_LEGOTOWER is not set
@@ -886,9 +907,9 @@ CONFIG_USB_EZUSB=y
 # CONFIG_USB_LED is not set
 # CONFIG_USB_CYPRESS_CY7C63 is not set
 # CONFIG_USB_CYTHERM is not set
-# CONFIG_USB_PHIDGETKIT is not set
-# CONFIG_USB_PHIDGETSERVO is not set
+# CONFIG_USB_PHIDGET is not set
 # CONFIG_USB_IDMOUSE is not set
+# CONFIG_USB_FTDI_ELAN is not set
 # CONFIG_USB_APPLEDISPLAY is not set
 # CONFIG_USB_SISUSBVGA is not set
 # CONFIG_USB_LD is not set
@@ -995,8 +1016,10 @@ CONFIG_FAT_DEFAULT_IOCHARSET="iso8859-1"
 #
 CONFIG_PROC_FS=y
 CONFIG_PROC_KCORE=y
+CONFIG_PROC_SYSCTL=y
 CONFIG_SYSFS=y
 CONFIG_TMPFS=y
+# CONFIG_TMPFS_POSIX_ACL is not set
 CONFIG_HUGETLBFS=y
 CONFIG_HUGETLB_PAGE=y
 CONFIG_RAMFS=y
@@ -1129,6 +1152,7 @@ CONFIG_PLIST=y
 # Kernel hacking
 #
 # CONFIG_PRINTK_TIME is not set
+CONFIG_ENABLE_MUST_CHECK=y
 CONFIG_MAGIC_SYSRQ=y
 # CONFIG_UNUSED_SYMBOLS is not set
 CONFIG_DEBUG_KERNEL=y
@@ -1148,6 +1172,7 @@ CONFIG_DEBUG_SPINLOCK_SLEEP=y
 # CONFIG_DEBUG_INFO is not set
 CONFIG_DEBUG_FS=y
 # CONFIG_DEBUG_VM is not set
+# CONFIG_DEBUG_LIST is not set
 # CONFIG_FORCED_INLINING is not set
 # CONFIG_RCU_TORTURE_TEST is not set
 CONFIG_DEBUG_STACKOVERFLOW=y
@@ -1169,6 +1194,9 @@ CONFIG_BOOTX_TEXT=y
 # Cryptographic options
 #
 CONFIG_CRYPTO=y
+CONFIG_CRYPTO_ALGAPI=y
+CONFIG_CRYPTO_BLKCIPHER=m
+CONFIG_CRYPTO_MANAGER=m
 # CONFIG_CRYPTO_HMAC is not set
 # CONFIG_CRYPTO_NULL is not set
 # CONFIG_CRYPTO_MD4 is not set
@@ -1178,6 +1206,8 @@ CONFIG_CRYPTO_MD5=y
 # CONFIG_CRYPTO_SHA512 is not set
 # CONFIG_CRYPTO_WP512 is not set
 # CONFIG_CRYPTO_TGR192 is not set
+CONFIG_CRYPTO_ECB=m
+CONFIG_CRYPTO_CBC=m
 CONFIG_CRYPTO_DES=y
 # CONFIG_CRYPTO_BLOWFISH is not set
 # CONFIG_CRYPTO_TWOFISH is not set
diff --git a/arch/powerpc/configs/pseries_defconfig b/arch/powerpc/configs/pseries_defconfig
index 44175fb7adec..9828663652e9 100644
--- a/arch/powerpc/configs/pseries_defconfig
+++ b/arch/powerpc/configs/pseries_defconfig
@@ -506,7 +506,7 @@ CONFIG_SCSI_SAS_ATTRS=m
 # CONFIG_MEGARAID_NEWGEN is not set
 # CONFIG_MEGARAID_LEGACY is not set
 # CONFIG_MEGARAID_SAS is not set
-# CONFIG_ATA is not set
+CONFIG_ATA=y
 # CONFIG_SCSI_HPTIOP is not set
 # CONFIG_SCSI_BUSLOGIC is not set
 # CONFIG_SCSI_DMX3191D is not set
diff --git a/arch/powerpc/kernel/ibmebus.c b/arch/powerpc/kernel/ibmebus.c
index 124dbcba94a8..39db7a3affe1 100644
--- a/arch/powerpc/kernel/ibmebus.c
+++ b/arch/powerpc/kernel/ibmebus.c
@@ -319,7 +319,7 @@ EXPORT_SYMBOL(ibmebus_unregister_driver);
 
 int ibmebus_request_irq(struct ibmebus_dev *dev,
                         u32 ist, 
-                        irqreturn_t (*handler)(int, void*, struct pt_regs *),
+                        irq_handler_t handler,
                         unsigned long irq_flags, const char * devname,
                         void *dev_id)
 {
diff --git a/arch/powerpc/kernel/iommu.c b/arch/powerpc/kernel/iommu.c
index ba0694071728..f88a2a675d90 100644
--- a/arch/powerpc/kernel/iommu.c
+++ b/arch/powerpc/kernel/iommu.c
@@ -75,7 +75,7 @@ static unsigned long iommu_range_alloc(struct iommu_table *tbl,
         /* This allocator was derived from x86_64's bit string search */
 
         /* Sanity check */
-        if (unlikely(npages) == 0) {
+        if (unlikely(npages == 0)) {
                 if (printk_ratelimit())
                         WARN_ON(1);
                 return DMA_ERROR_CODE;
diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c
index c3f58f2f9f52..5e37bf14ef2d 100644
--- a/arch/powerpc/kernel/irq.c
+++ b/arch/powerpc/kernel/irq.c
@@ -187,6 +187,7 @@ void fixup_irqs(cpumask_t map)
 
 void do_IRQ(struct pt_regs *regs)
 {
+        struct pt_regs *old_regs = set_irq_regs(regs);
         unsigned int irq;
 #ifdef CONFIG_IRQSTACKS
         struct thread_info *curtp, *irqtp;
@@ -216,7 +217,7 @@ void do_IRQ(struct pt_regs *regs)
          * The value -2 is for buggy hardware and means that this IRQ
          * has already been handled. -- Tom
          */
-        irq = ppc_md.get_irq(regs);
+        irq = ppc_md.get_irq();
 
         if (irq != NO_IRQ && irq != NO_IRQ_IGNORE) {
 #ifdef CONFIG_IRQSTACKS
@@ -230,18 +231,19 @@ void do_IRQ(struct pt_regs *regs)
                                 handler = &__do_IRQ;
                         irqtp->task = curtp->task;
                         irqtp->flags = 0;
-                        call_handle_irq(irq, desc, regs, irqtp, handler);
+                        call_handle_irq(irq, desc, irqtp, handler);
                         irqtp->task = NULL;
                         if (irqtp->flags)
                                 set_bits(irqtp->flags, &curtp->flags);
                 } else
 #endif
-                        generic_handle_irq(irq, regs);
+                        generic_handle_irq(irq);
         } else if (irq != NO_IRQ_IGNORE)
                 /* That's not SMP safe ... but who cares ? */
                 ppc_spurious_interrupts++;
 
         irq_exit();
+        set_irq_regs(old_regs);
 
 #ifdef CONFIG_PPC_ISERIES
         if (get_lppaca()->int_dword.fields.decr_int) {
@@ -570,8 +572,8 @@ unsigned int irq_create_mapping(struct irq_host *host,
 }
 EXPORT_SYMBOL_GPL(irq_create_mapping);
 
-extern unsigned int irq_create_of_mapping(struct device_node *controller,
-                                          u32 *intspec, unsigned int intsize)
+unsigned int irq_create_of_mapping(struct device_node *controller,
+                                   u32 *intspec, unsigned int intsize)
 {
         struct irq_host *host;
         irq_hw_number_t hwirq;
diff --git a/arch/powerpc/kernel/misc_64.S b/arch/powerpc/kernel/misc_64.S
index 41521b30c3cd..c70e20708a1f 100644
--- a/arch/powerpc/kernel/misc_64.S
+++ b/arch/powerpc/kernel/misc_64.S
@@ -52,12 +52,12 @@ _GLOBAL(call_do_softirq)
         blr
 
 _GLOBAL(call_handle_irq)
-        ld      r8,0(r7)
+        ld      r8,0(r6)
         mflr    r0
         std     r0,16(r1)
         mtctr   r8
-        stdu    r1,THREAD_SIZE-112(r6)
-        mr      r1,r6
+        stdu    r1,THREAD_SIZE-112(r5)
+        mr      r1,r5
         bctrl
         ld      r1,0(r1)
         ld      r0,16(r1)
diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c
index eb913f80bfb1..865b9648d0d5 100644
--- a/arch/powerpc/kernel/prom.c
+++ b/arch/powerpc/kernel/prom.c
@@ -724,7 +724,7 @@ static int __init early_init_dt_scan_chosen(unsigned long node,
                 strlcpy(cmd_line, p, min((int)l, COMMAND_LINE_SIZE));
 
 #ifdef CONFIG_CMDLINE
-        if (l == 0 || (l == 1 && (*p) == 0))
+        if (p == NULL || l == 0 || (l == 1 && (*p) == 0))
                 strlcpy(cmd_line, CONFIG_CMDLINE, COMMAND_LINE_SIZE);
 #endif /* CONFIG_CMDLINE */
 
diff --git a/arch/powerpc/kernel/smp.c b/arch/powerpc/kernel/smp.c
index 6a9bc9ce54e0..35c6309bdb76 100644
--- a/arch/powerpc/kernel/smp.c
+++ b/arch/powerpc/kernel/smp.c
@@ -115,7 +115,7 @@ void __devinit smp_generic_kick_cpu(int nr)
 }
 #endif
 
-void smp_message_recv(int msg, struct pt_regs *regs)
+void smp_message_recv(int msg)
 {
         switch(msg) {
         case PPC_MSG_CALL_FUNCTION:
@@ -127,11 +127,11 @@ void smp_message_recv(int msg, struct pt_regs *regs)
                 break;
         case PPC_MSG_DEBUGGER_BREAK:
                 if (crash_ipi_function_ptr) {
-                        crash_ipi_function_ptr(regs);
+                        crash_ipi_function_ptr(get_irq_regs());
                         break;
                 }
 #ifdef CONFIG_DEBUGGER
-                debugger_ipi(regs);
+                debugger_ipi(get_irq_regs());
                 break;
 #endif /* CONFIG_DEBUGGER */
                 /* FALLTHROUGH */
diff --git a/arch/powerpc/kernel/time.c b/arch/powerpc/kernel/time.c
index 85b9244a098c..5b59bc18dfe7 100644
--- a/arch/powerpc/kernel/time.c
+++ b/arch/powerpc/kernel/time.c
@@ -51,6 +51,7 @@
 #include <linux/rtc.h>
 #include <linux/jiffies.h>
 #include <linux/posix-timers.h>
+#include <linux/irq.h>
 
 #include <asm/io.h>
 #include <asm/processor.h>
@@ -643,6 +644,7 @@ static void iSeries_tb_recal(void)
  */
 void timer_interrupt(struct pt_regs * regs)
 {
+        struct pt_regs *old_regs;
         int next_dec;
         int cpu = smp_processor_id();
         unsigned long ticks;
@@ -653,9 +655,10 @@ void timer_interrupt(struct pt_regs * regs)
                 do_IRQ(regs);
 #endif
 
+        old_regs = set_irq_regs(regs);
         irq_enter();
 
-        profile_tick(CPU_PROFILING, regs);
+        profile_tick(CPU_PROFILING);
         calculate_steal_time();
 
 #ifdef CONFIG_PPC_ISERIES
@@ -703,7 +706,7 @@ void timer_interrupt(struct pt_regs * regs)
 
 #ifdef CONFIG_PPC_ISERIES
         if (hvlpevent_is_pending())
-                process_hvlpevents(regs);
+                process_hvlpevents();
 #endif
 
 #ifdef CONFIG_PPC64
@@ -715,6 +718,7 @@ void timer_interrupt(struct pt_regs * regs)
 #endif
 
         irq_exit();
+        set_irq_regs(old_regs);
 }
 
 void wakeup_decrementer(void)
diff --git a/arch/powerpc/platforms/82xx/mpc82xx.c b/arch/powerpc/platforms/82xx/mpc82xx.c
index 89d702de4863..0f5b30dc60da 100644
--- a/arch/powerpc/platforms/82xx/mpc82xx.c
+++ b/arch/powerpc/platforms/82xx/mpc82xx.c
@@ -11,7 +11,6 @@
  * option) any later version.
  */
 
-#include <linux/config.h>
 #include <linux/stddef.h>
 #include <linux/kernel.h>
 #include <linux/init.h>
diff --git a/arch/powerpc/platforms/82xx/mpc82xx_ads.c b/arch/powerpc/platforms/82xx/mpc82xx_ads.c
index 4276f087f26e..bb9acbb98176 100644
--- a/arch/powerpc/platforms/82xx/mpc82xx_ads.c
+++ b/arch/powerpc/platforms/82xx/mpc82xx_ads.c
@@ -12,8 +12,6 @@
  * option) any later version.
  */
 
-
-#include <linux/config.h>
 #include <linux/stddef.h>
 #include <linux/kernel.h>
 #include <linux/init.h>
@@ -384,8 +382,7 @@ struct hw_interrupt_type m82xx_pci_ic = {
 };
 
 static void
-m82xx_pci_irq_demux(unsigned int irq, struct irq_desc *desc,
-                    struct pt_regs *regs)
+m82xx_pci_irq_demux(unsigned int irq, struct irq_desc *desc)
 {
         unsigned long stat, mask, pend;
         int bit;
@@ -398,7 +395,7 @@ m82xx_pci_irq_demux(unsigned int irq, struct irq_desc *desc,
                         break;
                 for (bit = 0; pend != 0; ++bit, pend <<= 1) {
                         if (pend & 0x80000000)
-                                __do_IRQ(pci_int_base + bit, regs);
+                                __do_IRQ(pci_int_base + bit);
                 }
         }
 }
diff --git a/arch/powerpc/platforms/82xx/pq2ads.h b/arch/powerpc/platforms/82xx/pq2ads.h
index a7348213508f..fb2f92bcd770 100644
--- a/arch/powerpc/platforms/82xx/pq2ads.h
+++ b/arch/powerpc/platforms/82xx/pq2ads.h
@@ -22,8 +22,6 @@
 #ifndef __MACH_ADS8260_DEFS
 #define __MACH_ADS8260_DEFS
 
-#include <linux/config.h>
-
 #include <asm/ppcboot.h>
 
 /* For our show_cpuinfo hooks. */
diff --git a/arch/powerpc/platforms/85xx/mpc85xx_ads.c b/arch/powerpc/platforms/85xx/mpc85xx_ads.c
index 28070e7ae507..d3e669d69c73 100644
--- a/arch/powerpc/platforms/85xx/mpc85xx_ads.c
+++ b/arch/powerpc/platforms/85xx/mpc85xx_ads.c
@@ -66,13 +66,12 @@ mpc85xx_pcibios_fixup(void)
 
 #ifdef CONFIG_CPM2
 
-static void cpm2_cascade(unsigned int irq, struct irq_desc *desc,
-                         struct pt_regs *regs)
+static void cpm2_cascade(unsigned int irq, struct irq_desc *desc)
 {
         int cascade_irq;
 
-        while ((cascade_irq = cpm2_get_irq(regs)) >= 0) {
-                generic_handle_irq(cascade_irq, regs);
+        while ((cascade_irq = cpm2_get_irq()) >= 0) {
+                generic_handle_irq(cascade_irq);
         }
         desc->chip->eoi(irq);
 }
diff --git a/arch/powerpc/platforms/85xx/mpc85xx_cds.c b/arch/powerpc/platforms/85xx/mpc85xx_cds.c
index 193a5d7921b5..953cd5dd3f54 100644
--- a/arch/powerpc/platforms/85xx/mpc85xx_cds.c
+++ b/arch/powerpc/platforms/85xx/mpc85xx_cds.c
@@ -132,13 +132,12 @@ mpc85xx_cds_pcibios_fixup(void)
 
 #ifdef CONFIG_PPC_I8259
 #warning The i8259 PIC support is currently broken
-static void mpc85xx_8259_cascade(unsigned int irq, struct
-                irq_desc *desc, struct pt_regs *regs)
+static void mpc85xx_8259_cascade(unsigned int irq, struct irq_desc *desc)
 {
-        unsigned int cascade_irq = i8259_irq(regs);
+        unsigned int cascade_irq = i8259_irq();
 
         if (cascade_irq != NO_IRQ)
-                generic_handle_irq(cascade_irq, regs);
+                generic_handle_irq(cascade_irq);
 
         desc->chip->eoi(irq);
 }
@@ -150,8 +149,10 @@ void __init mpc85xx_cds_pic_init(void)
         struct mpic *mpic;
         struct resource r;
         struct device_node *np = NULL;
+#ifdef CONFIG_PPC_I8259
         struct device_node *cascade_node = NULL;
         int cascade_irq;
+#endif
 
         np = of_find_node_by_type(np, "open-pic");
 
diff --git a/arch/powerpc/platforms/86xx/mpc86xx_hpcn.c b/arch/powerpc/platforms/86xx/mpc86xx_hpcn.c
index b637e8157f7b..1a1c226ad4d9 100644
--- a/arch/powerpc/platforms/86xx/mpc86xx_hpcn.c
+++ b/arch/powerpc/platforms/86xx/mpc86xx_hpcn.c
@@ -53,12 +53,11 @@ unsigned long pci_dram_offset = 0;
 
 
 #ifdef CONFIG_PCI
-static void mpc86xx_8259_cascade(unsigned int irq, struct irq_desc *desc,
-                                 struct pt_regs *regs)
+static void mpc86xx_8259_cascade(unsigned int irq, struct irq_desc *desc)
 {
-        unsigned int cascade_irq = i8259_irq(regs);
+        unsigned int cascade_irq = i8259_irq();
         if (cascade_irq != NO_IRQ)
-                generic_handle_irq(cascade_irq, regs);
+                generic_handle_irq(cascade_irq);
         desc->chip->eoi(irq);
 }
 #endif  /* CONFIG_PCI */
diff --git a/arch/powerpc/platforms/cell/interrupt.c b/arch/powerpc/platforms/cell/interrupt.c
index 8533f13a5ed1..a914c12b4060 100644
--- a/arch/powerpc/platforms/cell/interrupt.c
+++ b/arch/powerpc/platforms/cell/interrupt.c
@@ -98,8 +98,7 @@ static void iic_ioexc_eoi(unsigned int irq)
 {
 }
 
-static void iic_ioexc_cascade(unsigned int irq, struct irq_desc *desc,
-                            struct pt_regs *regs)
+static void iic_ioexc_cascade(unsigned int irq, struct irq_desc *desc)
 {
         struct cbe_iic_regs __iomem *node_iic = (void __iomem *)desc->handler_data;
         unsigned int base = (irq & 0xffffff00) | IIC_IRQ_TYPE_IOEXC;
@@ -121,7 +120,7 @@ static void iic_ioexc_cascade(unsigned int irq, struct irq_desc *desc,
                                         irq_linear_revmap(iic_host,
                                                           base | cascade);
                                 if (cirq != NO_IRQ)
-                                        generic_handle_irq(cirq, regs);
+                                        generic_handle_irq(cirq);
                         }
                 /* post-ack level interrupts */
                 ack = bits & ~IIC_ISR_EDGE_MASK;
@@ -140,7 +139,7 @@ static struct irq_chip iic_ioexc_chip = {
 };
 
 /* Get an IRQ number from the pending state register of the IIC */
-static unsigned int iic_get_irq(struct pt_regs *regs)
+static unsigned int iic_get_irq(void)
 {
         struct cbe_iic_pending_bits pending;
         struct iic *iic;
@@ -190,11 +189,11 @@ struct irq_host *iic_get_irq_host(int node)
 EXPORT_SYMBOL_GPL(iic_get_irq_host);
 
 
-static irqreturn_t iic_ipi_action(int irq, void *dev_id, struct pt_regs *regs)
+static irqreturn_t iic_ipi_action(int irq, void *dev_id)
 {
         int ipi = (int)(long)dev_id;
 
-        smp_message_recv(ipi, regs);
+        smp_message_recv(ipi);
 
         return IRQ_HANDLED;
 }
diff --git a/arch/powerpc/platforms/cell/spider-pic.c b/arch/powerpc/platforms/cell/spider-pic.c
index b0e95d594c51..21a9ebd4978e 100644
--- a/arch/powerpc/platforms/cell/spider-pic.c
+++ b/arch/powerpc/platforms/cell/spider-pic.c
@@ -213,8 +213,7 @@ static struct irq_host_ops spider_host_ops = {
         .xlate = spider_host_xlate,
 };
 
-static void spider_irq_cascade(unsigned int irq, struct irq_desc *desc,
-                               struct pt_regs *regs)
+static void spider_irq_cascade(unsigned int irq, struct irq_desc *desc)
 {
         struct spider_pic *pic = desc->handler_data;
         unsigned int cs, virq;
@@ -225,7 +224,7 @@ static void spider_irq_cascade(unsigned int irq, struct irq_desc *desc,
         else
                 virq = irq_linear_revmap(pic->host, cs);
         if (virq != NO_IRQ)
-                generic_handle_irq(virq, regs);
+                generic_handle_irq(virq);
         desc->chip->eoi(irq);
 }
 
diff --git a/arch/powerpc/platforms/cell/spu_base.c b/arch/powerpc/platforms/cell/spu_base.c
index ac5f12662dbb..ccfd0c4db874 100644
--- a/arch/powerpc/platforms/cell/spu_base.c
+++ b/arch/powerpc/platforms/cell/spu_base.c
@@ -147,7 +147,7 @@ static int __spu_trap_data_map(struct spu *spu, unsigned long ea, u64 dsisr)
 }
 
 static irqreturn_t
-spu_irq_class_0(int irq, void *data, struct pt_regs *regs)
+spu_irq_class_0(int irq, void *data)
 {
         struct spu *spu;
 
@@ -186,7 +186,7 @@ spu_irq_class_0_bottom(struct spu *spu)
 EXPORT_SYMBOL_GPL(spu_irq_class_0_bottom);
 
 static irqreturn_t
-spu_irq_class_1(int irq, void *data, struct pt_regs *regs)
+spu_irq_class_1(int irq, void *data)
 {
         struct spu *spu;
         unsigned long stat, mask, dar, dsisr;
@@ -224,7 +224,7 @@ spu_irq_class_1(int irq, void *data, struct pt_regs *regs)
 EXPORT_SYMBOL_GPL(spu_irq_class_1_bottom);
 
 static irqreturn_t
-spu_irq_class_2(int irq, void *data, struct pt_regs *regs)
+spu_irq_class_2(int irq, void *data)
 {
         struct spu *spu;
         unsigned long stat;
diff --git a/arch/powerpc/platforms/chrp/setup.c b/arch/powerpc/platforms/chrp/setup.c
index 488dbd9b51ae..cae3d13229b9 100644
--- a/arch/powerpc/platforms/chrp/setup.c
+++ b/arch/powerpc/platforms/chrp/setup.c
@@ -70,7 +70,7 @@ unsigned long event_scan_interval;
  * has to include <linux/interrupt.h> (to get irqreturn_t), which
  * causes all sorts of problems.  -- paulus
  */
-extern irqreturn_t xmon_irq(int, void *, struct pt_regs *);
+extern irqreturn_t xmon_irq(int, void *);
 
 extern unsigned long loops_per_jiffy;
 
@@ -335,12 +335,11 @@ chrp_event_scan(unsigned long unused)
                   jiffies + event_scan_interval);
 }
 
-static void chrp_8259_cascade(unsigned int irq, struct irq_desc *desc,
-                              struct pt_regs *regs)
+static void chrp_8259_cascade(unsigned int irq, struct irq_desc *desc)
 {
-        unsigned int cascade_irq = i8259_irq(regs);
+        unsigned int cascade_irq = i8259_irq();
         if (cascade_irq != NO_IRQ)
-                generic_handle_irq(cascade_irq, regs);
+                generic_handle_irq(cascade_irq);
         desc->chip->eoi(irq);
 }
 
diff --git a/arch/powerpc/platforms/embedded6xx/mpc7448_hpc2.c b/arch/powerpc/platforms/embedded6xx/mpc7448_hpc2.c
index cb6f084844f2..bdb475c65cba 100644
--- a/arch/powerpc/platforms/embedded6xx/mpc7448_hpc2.c
+++ b/arch/powerpc/platforms/embedded6xx/mpc7448_hpc2.c
@@ -61,8 +61,7 @@ pci_dram_offset = MPC7448_HPC2_PCI_MEM_OFFSET;
 extern int tsi108_setup_pci(struct device_node *dev);
 extern void _nmask_and_or_msr(unsigned long nmask, unsigned long or_val);
 extern void tsi108_pci_int_init(void);
-extern void tsi108_irq_cascade(unsigned int irq, struct irq_desc *desc,
-                            struct pt_regs *regs);
+extern void tsi108_irq_cascade(unsigned int irq, struct irq_desc *desc);
 
 int mpc7448_hpc2_exclude_device(u_char bus, u_char devfn)
 {
@@ -200,7 +199,7 @@ static void __init mpc7448_hpc2_init_IRQ(void)
         tsi_pic = of_find_node_by_type(NULL, "open-pic");
         if (tsi_pic) {
                 unsigned int size;
-                void *prop = get_property(tsi_pic, "reg", &size);
+                const void *prop = get_property(tsi_pic, "reg", &size);
                 mpic_paddr = of_translate_address(tsi_pic, prop);
         }
 
diff --git a/arch/powerpc/platforms/iseries/irq.c b/arch/powerpc/platforms/iseries/irq.c
index e32446877e78..5225abfafd9b 100644
--- a/arch/powerpc/platforms/iseries/irq.c
+++ b/arch/powerpc/platforms/iseries/irq.c
@@ -43,10 +43,7 @@
 #include "irq.h"
 #include "pci.h"
 #include "call_pci.h"
-
-#if defined(CONFIG_SMP)
-extern void iSeries_smp_message_recv(struct pt_regs *);
-#endif
+#include "smp.h"
 
 #ifdef CONFIG_PCI
 
@@ -88,7 +85,7 @@ static DEFINE_SPINLOCK(pending_irqs_lock);
 static int num_pending_irqs;
 static int pending_irqs[NR_IRQS];
 
-static void int_received(struct pci_event *event, struct pt_regs *regs)
+static void int_received(struct pci_event *event)
 {
         int irq;
 
@@ -146,11 +143,11 @@ static void int_received(struct pci_event *event, struct pt_regs *regs)
         }
 }
 
-static void pci_event_handler(struct HvLpEvent *event, struct pt_regs *regs)
+static void pci_event_handler(struct HvLpEvent *event)
 {
         if (event && (event->xType == HvLpEvent_Type_PciIo)) {
                 if (hvlpevent_is_int(event))
-                        int_received((struct pci_event *)event, regs);
+                        int_received((struct pci_event *)event);
                 else
                         printk(KERN_ERR
                                 "pci_event_handler: unexpected ack received\n");
@@ -308,18 +305,18 @@ int __init iSeries_allocate_IRQ(HvBusNumber bus,
 /*
  * Get the next pending IRQ.
  */
-unsigned int iSeries_get_irq(struct pt_regs *regs)
+unsigned int iSeries_get_irq(void)
 {
         int irq = NO_IRQ_IGNORE;
 
 #ifdef CONFIG_SMP
         if (get_lppaca()->int_dword.fields.ipi_cnt) {
                 get_lppaca()->int_dword.fields.ipi_cnt = 0;
-                iSeries_smp_message_recv(regs);
+                iSeries_smp_message_recv();
         }
 #endif /* CONFIG_SMP */
         if (hvlpevent_is_pending())
-                process_hvlpevents(regs);
+                process_hvlpevents();
 
 #ifdef CONFIG_PCI
         if (num_pending_irqs) {
diff --git a/arch/powerpc/platforms/iseries/irq.h b/arch/powerpc/platforms/iseries/irq.h
index 1ee8985140e5..69f1b437fc7b 100644
--- a/arch/powerpc/platforms/iseries/irq.h
+++ b/arch/powerpc/platforms/iseries/irq.h
@@ -4,6 +4,6 @@
 extern void iSeries_init_IRQ(void);
 extern int  iSeries_allocate_IRQ(HvBusNumber, HvSubBusNumber, u32);
 extern void iSeries_activate_IRQs(void);
-extern unsigned int iSeries_get_irq(struct pt_regs *);
+extern unsigned int iSeries_get_irq(void);
 
 #endif /* _ISERIES_IRQ_H */
diff --git a/arch/powerpc/platforms/iseries/lpevents.c b/arch/powerpc/platforms/iseries/lpevents.c
index 98c1c2440aad..e3e929e1b460 100644
--- a/arch/powerpc/platforms/iseries/lpevents.c
+++ b/arch/powerpc/platforms/iseries/lpevents.c
@@ -116,7 +116,7 @@ static void hvlpevent_clear_valid(struct HvLpEvent * event)
         hvlpevent_invalidate(event);
 }
 
-void process_hvlpevents(struct pt_regs *regs)
+void process_hvlpevents(void)
 {
         struct HvLpEvent * event;
 
@@ -144,7 +144,7 @@ void process_hvlpevents(struct pt_regs *regs)
                                 __get_cpu_var(hvlpevent_counts)[event->xType]++;
                         if (event->xType < HvLpEvent_Type_NumTypes &&
                                         lpEventHandler[event->xType])
-                                lpEventHandler[event->xType](event, regs);
+                                lpEventHandler[event->xType](event);
                         else
                                 printk(KERN_INFO "Unexpected Lp Event type=%d\n", event->xType );
 
diff --git a/arch/powerpc/platforms/iseries/mf.c b/arch/powerpc/platforms/iseries/mf.c
index 1983b640bac1..b5737d68d6c4 100644
--- a/arch/powerpc/platforms/iseries/mf.c
+++ b/arch/powerpc/platforms/iseries/mf.c
@@ -513,7 +513,7 @@ static void handle_ack(struct io_mf_lp_event *event)
  * parse it enough to know if it is an interrupt or an
  * acknowledge.
  */
-static void hv_handler(struct HvLpEvent *event, struct pt_regs *regs)
+static void hv_handler(struct HvLpEvent *event)
 {
         if ((event != NULL) && (event->xType == HvLpEvent_Type_MachineFac)) {
                 if (hvlpevent_is_ack(event))
@@ -847,7 +847,7 @@ static int mf_get_boot_rtc(struct rtc_time *tm)
         /* We need to poll here as we are not yet taking interrupts */
         while (rtc_data.busy) {
                 if (hvlpevent_is_pending())
-                        process_hvlpevents(NULL);
+                        process_hvlpevents();
         }
         return rtc_set_tm(rtc_data.rc, rtc_data.ce_msg.ce_msg, tm);
 }
diff --git a/arch/powerpc/platforms/iseries/smp.c b/arch/powerpc/platforms/iseries/smp.c
index 2eb095edb472..aee5908df700 100644
--- a/arch/powerpc/platforms/iseries/smp.c
+++ b/arch/powerpc/platforms/iseries/smp.c
@@ -43,9 +43,11 @@
 #include <asm/cputable.h>
 #include <asm/system.h>
 
+#include "smp.h"
+
 static unsigned long iSeries_smp_message[NR_CPUS];
 
-void iSeries_smp_message_recv(struct pt_regs *regs)
+void iSeries_smp_message_recv(void)
 {
         int cpu = smp_processor_id();
         int msg;
@@ -55,7 +57,7 @@ void iSeries_smp_message_recv(struct pt_regs *regs)
 
         for (msg = 0; msg < 4; msg++)
                 if (test_and_clear_bit(msg, &iSeries_smp_message[cpu]))
-                        smp_message_recv(msg, regs);
+                        smp_message_recv(msg);
 }
 
 static inline void smp_iSeries_do_message(int cpu, int msg)
diff --git a/arch/powerpc/platforms/iseries/smp.h b/arch/powerpc/platforms/iseries/smp.h
new file mode 100644
index 000000000000..d501f7de01e7
--- /dev/null
+++ b/arch/powerpc/platforms/iseries/smp.h
@@ -0,0 +1,6 @@
+#ifndef _PLATFORMS_ISERIES_SMP_H
+#define _PLATFORMS_ISERIES_SMP_H
+
+extern void iSeries_smp_message_recv(void);
+
+#endif  /* _PLATFORMS_ISERIES_SMP_H */
diff --git a/arch/powerpc/platforms/iseries/viopath.c b/arch/powerpc/platforms/iseries/viopath.c
index 9baa4ee82592..04e07e5da0c1 100644
--- a/arch/powerpc/platforms/iseries/viopath.c
+++ b/arch/powerpc/platforms/iseries/viopath.c
@@ -378,7 +378,7 @@ void vio_set_hostlp(void)
 }
 EXPORT_SYMBOL(vio_set_hostlp);
 
-static void vio_handleEvent(struct HvLpEvent *event, struct pt_regs *regs)
+static void vio_handleEvent(struct HvLpEvent *event)
 {
         HvLpIndex remoteLp;
         int subtype = (event->xSubtype & VIOMAJOR_SUBTYPE_MASK)
diff --git a/arch/powerpc/platforms/maple/pci.c b/arch/powerpc/platforms/maple/pci.c
index 1b827618e05f..63b4d1bff359 100644
--- a/arch/powerpc/platforms/maple/pci.c
+++ b/arch/powerpc/platforms/maple/pci.c
@@ -8,7 +8,7 @@
  * 2 of the License, or (at your option) any later version.
  */
 
-#define DEBUG
+#undef DEBUG
 
 #include <linux/kernel.h>
 #include <linux/pci.h>
@@ -16,6 +16,7 @@
 #include <linux/string.h>
 #include <linux/init.h>
 #include <linux/bootmem.h>
+#include <linux/irq.h>
 
 #include <asm/sections.h>
 #include <asm/io.h>
@@ -33,7 +34,7 @@
 #define DBG(x...)
 #endif
 
-static struct pci_controller *u3_agp, *u3_ht;
+static struct pci_controller *u3_agp, *u3_ht, *u4_pcie;
 
 static int __init fixup_one_level_bus_range(struct device_node *node, int higher)
 {
@@ -287,6 +288,114 @@ static struct pci_ops u3_ht_pci_ops =
         u3_ht_write_config
 };
 
+static unsigned int u4_pcie_cfa0(unsigned int devfn, unsigned int off)
+{
+        return (1 << PCI_SLOT(devfn))   |
+               (PCI_FUNC(devfn) << 8)   |
+               ((off >> 8) << 28)       |
+               (off & 0xfcu);
+}
+
+static unsigned int u4_pcie_cfa1(unsigned int bus, unsigned int devfn,
+                                 unsigned int off)
+{
+        return (bus << 16)              |
+               (devfn << 8)             |
+               ((off >> 8) << 28)       |
+               (off & 0xfcu)            | 1u;
+}
+
+static volatile void __iomem *u4_pcie_cfg_access(struct pci_controller* hose,
+                                        u8 bus, u8 dev_fn, int offset)
+{
+        unsigned int caddr;
+
+        if (bus == hose->first_busno)
+                caddr = u4_pcie_cfa0(dev_fn, offset);
+        else
+                caddr = u4_pcie_cfa1(bus, dev_fn, offset);
+
+        /* Uninorth will return garbage if we don't read back the value ! */
+        do {
+                out_le32(hose->cfg_addr, caddr);
+        } while (in_le32(hose->cfg_addr) != caddr);
+
+        offset &= 0x03;
+        return hose->cfg_data + offset;
+}
+
+static int u4_pcie_read_config(struct pci_bus *bus, unsigned int devfn,
+                               int offset, int len, u32 *val)
+{
+        struct pci_controller *hose;
+        volatile void __iomem *addr;
+
+        hose = pci_bus_to_host(bus);
+        if (hose == NULL)
+                return PCIBIOS_DEVICE_NOT_FOUND;
+        if (offset >= 0x1000)
+                return  PCIBIOS_BAD_REGISTER_NUMBER;
+        addr = u4_pcie_cfg_access(hose, bus->number, devfn, offset);
+        if (!addr)
+                return PCIBIOS_DEVICE_NOT_FOUND;
+        /*
+         * Note: the caller has already checked that offset is
+         * suitably aligned and that len is 1, 2 or 4.
+         */
+        switch (len) {
+        case 1:
+                *val = in_8(addr);
+                break;
+        case 2:
+                *val = in_le16(addr);
+                break;
+        default:
+                *val = in_le32(addr);
+                break;
+        }
+        return PCIBIOS_SUCCESSFUL;
+}
+static int u4_pcie_write_config(struct pci_bus *bus, unsigned int devfn,
+                                int offset, int len, u32 val)
+{
+        struct pci_controller *hose;
+        volatile void __iomem *addr;
+
+        hose = pci_bus_to_host(bus);
+        if (hose == NULL)
+                return PCIBIOS_DEVICE_NOT_FOUND;
+        if (offset >= 0x1000)
+                return  PCIBIOS_BAD_REGISTER_NUMBER;
+        addr = u4_pcie_cfg_access(hose, bus->number, devfn, offset);
+        if (!addr)
+                return PCIBIOS_DEVICE_NOT_FOUND;
+        /*
+         * Note: the caller has already checked that offset is
+         * suitably aligned and that len is 1, 2 or 4.
+         */
+        switch (len) {
+        case 1:
+                out_8(addr, val);
+                (void) in_8(addr);
+                break;
+        case 2:
+                out_le16(addr, val);
+                (void) in_le16(addr);
+                break;
+        default:
+                out_le32(addr, val);
+                (void) in_le32(addr);
+                break;
+        }
+        return PCIBIOS_SUCCESSFUL;
+}
+
+static struct pci_ops u4_pcie_pci_ops =
+{
+        u4_pcie_read_config,
+        u4_pcie_write_config
+};
+
 static void __init setup_u3_agp(struct pci_controller* hose)
 {
         /* On G5, we move AGP up to high bus number so we don't need
@@ -307,6 +416,26 @@ static void __init setup_u3_agp(struct pci_controller* hose)
         u3_agp = hose;
 }
 
+static void __init setup_u4_pcie(struct pci_controller* hose)
+{
+        /* We currently only implement the "non-atomic" config space, to
+         * be optimised later.
+         */
+        hose->ops = &u4_pcie_pci_ops;
+        hose->cfg_addr = ioremap(0xf0000000 + 0x800000, 0x1000);
+        hose->cfg_data = ioremap(0xf0000000 + 0xc00000, 0x1000);
+
+        /* The bus contains a bridge from root -> device, we need to
+         * make it visible on bus 0 so that we pick the right type
+         * of config cycles. If we didn't, we would have to force all
+         * config cycles to be type 1. So we override the "bus-range"
+         * property here
+         */
+        hose->first_busno = 0x00;
+        hose->last_busno = 0xff;
+        u4_pcie = hose;
+}
+
 static void __init setup_u3_ht(struct pci_controller* hose)
 {
         hose->ops = &u3_ht_pci_ops;
@@ -354,6 +483,10 @@ static int __init add_bridge(struct device_node *dev)
                 setup_u3_ht(hose);
                 disp_name = "U3-HT";
                 primary = 1;
+        } else if (device_is_compatible(dev, "u4-pcie")) {
+                setup_u4_pcie(hose);
+                disp_name = "U4-PCIE";
+                primary = 0;
         }
         printk(KERN_INFO "Found %s PCI host bridge. Firmware bus number: %d->%d\n",
                 disp_name, hose->first_busno, hose->last_busno);
@@ -361,7 +494,6 @@ static int __init add_bridge(struct device_node *dev)
         /* Interpret the "ranges" property */
         /* This also maps the I/O region and sets isa_io/mem_base */
         pci_process_bridge_OF_ranges(hose, dev, primary);
-        pci_setup_phb_io(hose, primary);
 
         /* Fixup "bus-range" OF property */
         fixup_bus_range(dev);
@@ -376,8 +508,30 @@ void __init maple_pcibios_fixup(void)
 
         DBG(" -> maple_pcibios_fixup\n");
 
-        for_each_pci_dev(dev)
+        for_each_pci_dev(dev) {
+                /* Fixup IRQ for PCIe host */
+                if (u4_pcie != NULL && dev->bus->number == 0 &&
+                    pci_bus_to_host(dev->bus) == u4_pcie) {
+                        printk(KERN_DEBUG "Fixup U4 PCIe IRQ\n");
+                        dev->irq = irq_create_mapping(NULL, 1);
+                        if (dev->irq != NO_IRQ)
+                                set_irq_type(dev->irq, IRQ_TYPE_LEVEL_LOW);
+                        continue;
+                }
+
+                /* Hide AMD8111 IDE interrupt when in legacy mode so
+                 * the driver calls pci_get_legacy_ide_irq()
+                 */
+                if (dev->vendor == PCI_VENDOR_ID_AMD &&
+                    dev->device == PCI_DEVICE_ID_AMD_8111_IDE &&
+                    (dev->class & 5) != 5) {
+                        dev->irq = NO_IRQ;
+                        continue;
+                }
+
+                /* For all others, map the interrupt from the device-tree */
                 pci_read_irq_line(dev);
+        }
 
         DBG(" <- maple_pcibios_fixup\n");
 }
@@ -388,8 +542,10 @@ static void __init maple_fixup_phb_resources(void)
         
         list_for_each_entry_safe(hose, tmp, &hose_list, list_node) {
                 unsigned long offset = (unsigned long)hose->io_base_virt - pci_io_base;
+
                 hose->io_resource.start += offset;
                 hose->io_resource.end += offset;
+
                 printk(KERN_INFO "PCI Host %d, io start: %llx; io end: %llx\n",
                        hose->global_number,
                        (unsigned long long)hose->io_resource.start,
@@ -431,6 +587,19 @@ void __init maple_pci_init(void)
         if (ht && add_bridge(ht) != 0)
                 of_node_put(ht);
 
+        /*
+         * We need to call pci_setup_phb_io for the HT bridge first
+         * so it gets the I/O port numbers starting at 0, and we
+         * need to call it for the AGP bridge after that so it gets
+         * small positive I/O port numbers.
+         */
+        if (u3_ht)
+                pci_setup_phb_io(u3_ht, 1);
+        if (u3_agp)
+                pci_setup_phb_io(u3_agp, 0);
+        if (u4_pcie)
+                pci_setup_phb_io(u4_pcie, 0);
+
         /* Fixup the IO resources on our host bridges as the common code
          * does it only for childs of the host bridges
          */
@@ -465,8 +634,11 @@ int maple_pci_get_legacy_ide_irq(struct pci_dev *pdev, int channel)
                 return defirq;
 
         np = pci_device_to_OF_node(pdev);
-        if (np == NULL)
+        if (np == NULL) {
+                printk("Failed to locate OF node for IDE %s\n",
+                       pci_name(pdev));
                 return defirq;
+        }
         irq = irq_of_parse_and_map(np, channel & 0x1);
         if (irq == NO_IRQ) {
                 printk("Failed to map onboard IDE interrupt for channel %d\n",
@@ -479,6 +651,9 @@ int maple_pci_get_legacy_ide_irq(struct pci_dev *pdev, int channel)
 /* XXX: To remove once all firmwares are ok */
 static void fixup_maple_ide(struct pci_dev* dev)
 {
+        if (!machine_is(maple))
+                return;
+
 #if 0 /* Enable this to enable IDE port 0 */
         {
                 u8 v;
@@ -495,7 +670,7 @@ static void fixup_maple_ide(struct pci_dev* dev)
         dev->resource[4].start = 0xcc00;
         dev->resource[4].end = 0xcc10;
 #endif
-#if 1 /* Enable this to fixup IDE sense/polarity of irqs in IO-APICs */
+#if 0 /* Enable this to fixup IDE sense/polarity of irqs in IO-APICs */
         {
                 struct pci_dev *apicdev;
                 u32 v;
diff --git a/arch/powerpc/platforms/pasemi/pci.c b/arch/powerpc/platforms/pasemi/pci.c
index 4679c5230413..39020c1fa13d 100644
--- a/arch/powerpc/platforms/pasemi/pci.c
+++ b/arch/powerpc/platforms/pasemi/pci.c
@@ -35,17 +35,17 @@
 
 #define CONFIG_OFFSET_VALID(off) ((off) < 4096)
 
-static unsigned long pa_pxp_cfg_addr(struct pci_controller *hose,
+static void volatile __iomem *pa_pxp_cfg_addr(struct pci_controller *hose,
                                        u8 bus, u8 devfn, int offset)
 {
-        return ((unsigned long)hose->cfg_data) + PA_PXP_CFA(bus, devfn, offset);
+        return hose->cfg_data + PA_PXP_CFA(bus, devfn, offset);
 }
 
 static int pa_pxp_read_config(struct pci_bus *bus, unsigned int devfn,
                               int offset, int len, u32 *val)
 {
         struct pci_controller *hose;
-        unsigned long addr;
+        void volatile __iomem *addr;
 
         hose = pci_bus_to_host(bus);
         if (!hose)
@@ -62,13 +62,13 @@ static int pa_pxp_read_config(struct pci_bus *bus, unsigned int devfn,
          */
         switch (len) {
         case 1:
-                *val = in_8((u8 *)addr);
+                *val = in_8(addr);
                 break;
         case 2:
-                *val = in_le16((u16 *)addr);
+                *val = in_le16(addr);
                 break;
         default:
-                *val = in_le32((u32 *)addr);
+                *val = in_le32(addr);
                 break;
         }
 
@@ -79,7 +79,7 @@ static int pa_pxp_write_config(struct pci_bus *bus, unsigned int devfn,
                                int offset, int len, u32 val)
 {
         struct pci_controller *hose;
-        unsigned long addr;
+        void volatile __iomem *addr;
 
         hose = pci_bus_to_host(bus);
         if (!hose)
@@ -96,16 +96,16 @@ static int pa_pxp_write_config(struct pci_bus *bus, unsigned int devfn,
          */
         switch (len) {
         case 1:
-                out_8((u8 *)addr, val);
-                (void) in_8((u8 *)addr);
+                out_8(addr, val);
+                (void) in_8(addr);
                 break;
         case 2:
-                out_le16((u16 *)addr, val);
-                (void) in_le16((u16 *)addr);
+                out_le16(addr, val);
+                (void) in_le16(addr);
                 break;
         default:
-                out_le32((u32 *)addr, val);
-                (void) in_le32((u32 *)addr);
+                out_le32(addr, val);
+                (void) in_le32(addr);
                 break;
         }
         return PCIBIOS_SUCCESSFUL;
diff --git a/arch/powerpc/platforms/powermac/low_i2c.c b/arch/powerpc/platforms/powermac/low_i2c.c
index c2c7cf75dd5f..bfc4829162f1 100644
--- a/arch/powerpc/platforms/powermac/low_i2c.c
+++ b/arch/powerpc/platforms/powermac/low_i2c.c
@@ -342,7 +342,7 @@ static void kw_i2c_handle_interrupt(struct pmac_i2c_host_kw *host, u8 isr)
 }
 
 /* Interrupt handler */
-static irqreturn_t kw_i2c_irq(int irq, void *dev_id, struct pt_regs *regs)
+static irqreturn_t kw_i2c_irq(int irq, void *dev_id)
 {
         struct pmac_i2c_host_kw *host = dev_id;
         unsigned long flags;
diff --git a/arch/powerpc/platforms/powermac/pfunc_base.c b/arch/powerpc/platforms/powermac/pfunc_base.c
index ee3b223ab17a..5c6c15c5f9a3 100644
--- a/arch/powerpc/platforms/powermac/pfunc_base.c
+++ b/arch/powerpc/platforms/powermac/pfunc_base.c
@@ -15,7 +15,7 @@
 #define DBG(fmt...)
 #endif
 
-static irqreturn_t macio_gpio_irq(int irq, void *data, struct pt_regs *regs)
+static irqreturn_t macio_gpio_irq(int irq, void *data)
 {
         pmf_do_irq(data);
 
diff --git a/arch/powerpc/platforms/powermac/pic.c b/arch/powerpc/platforms/powermac/pic.c
index 39f7ddb554ea..39db12890214 100644
--- a/arch/powerpc/platforms/powermac/pic.c
+++ b/arch/powerpc/platforms/powermac/pic.c
@@ -42,7 +42,7 @@
  * has to include <linux/interrupt.h> (to get irqreturn_t), which
  * causes all sorts of problems.  -- paulus
  */
-extern irqreturn_t xmon_irq(int, void *, struct pt_regs *);
+extern irqreturn_t xmon_irq(int, void *);
 
 #ifdef CONFIG_PPC32
 struct pmac_irq_hw {
@@ -210,7 +210,7 @@ static struct irq_chip pmac_pic = {
         .retrigger      = pmac_retrigger,
 };
 
-static irqreturn_t gatwick_action(int cpl, void *dev_id, struct pt_regs *regs)
+static irqreturn_t gatwick_action(int cpl, void *dev_id)
 {
         unsigned long flags;
         int irq, bits;
@@ -227,7 +227,7 @@ static irqreturn_t gatwick_action(int cpl, void *dev_id, struct pt_regs *regs)
                         continue;
                 irq += __ilog2(bits);
                 spin_unlock_irqrestore(&pmac_pic_lock, flags);
-                __do_IRQ(irq, regs);
+                __do_IRQ(irq);
                 spin_lock_irqsave(&pmac_pic_lock, flags);
                 rc = IRQ_HANDLED;
         }
@@ -235,18 +235,18 @@ static irqreturn_t gatwick_action(int cpl, void *dev_id, struct pt_regs *regs)
         return rc;
 }
 
-static unsigned int pmac_pic_get_irq(struct pt_regs *regs)
+static unsigned int pmac_pic_get_irq(void)
 {
         int irq;
         unsigned long bits = 0;
         unsigned long flags;
 
 #ifdef CONFIG_SMP
-        void psurge_smp_message_recv(struct pt_regs *);
+        void psurge_smp_message_recv(void);
 
         /* IPI's are a hack on the powersurge -- Cort */
         if ( smp_processor_id() != 0 ) {
-                psurge_smp_message_recv(regs);
+                psurge_smp_message_recv();
                 return NO_IRQ_IGNORE;   /* ignore, already handled */
         }
 #endif /* CONFIG_SMP */
@@ -440,14 +440,13 @@ static void __init pmac_pic_probe_oldstyle(void)
 }
 #endif /* CONFIG_PPC32 */
 
-static void pmac_u3_cascade(unsigned int irq, struct irq_desc *desc,
-                            struct pt_regs *regs)
+static void pmac_u3_cascade(unsigned int irq, struct irq_desc *desc)
 {
         struct mpic *mpic = desc->handler_data;
 
-        unsigned int cascade_irq = mpic_get_one_irq(mpic, regs);
+        unsigned int cascade_irq = mpic_get_one_irq(mpic);
         if (cascade_irq != NO_IRQ)
-                generic_handle_irq(cascade_irq, regs);
+                generic_handle_irq(cascade_irq);
         desc->chip->eoi(irq);
 }
 
diff --git a/arch/powerpc/platforms/powermac/pic.h b/arch/powerpc/platforms/powermac/pic.h
index 664103dfeef9..c44c89f5e532 100644
--- a/arch/powerpc/platforms/powermac/pic.h
+++ b/arch/powerpc/platforms/powermac/pic.h
@@ -5,7 +5,7 @@
 
 extern struct hw_interrupt_type pmac_pic;
 
-void pmac_pic_init(void);
-int pmac_get_irq(struct pt_regs *regs);
+extern void pmac_pic_init(void);
+extern int pmac_get_irq(void);
 
 #endif /* __PPC_PLATFORMS_PMAC_PIC_H */
diff --git a/arch/powerpc/platforms/powermac/smp.c b/arch/powerpc/platforms/powermac/smp.c
index 1949b657b092..eeb2ae5ffc58 100644
--- a/arch/powerpc/platforms/powermac/smp.c
+++ b/arch/powerpc/platforms/powermac/smp.c
@@ -160,7 +160,7 @@ static inline void psurge_clr_ipi(int cpu)
  */
 static unsigned long psurge_smp_message[NR_CPUS];
 
-void psurge_smp_message_recv(struct pt_regs *regs)
+void psurge_smp_message_recv(void)
 {
         int cpu = smp_processor_id();
         int msg;
@@ -174,12 +174,12 @@ void psurge_smp_message_recv(struct pt_regs *regs)
         /* make sure there is a message there */
         for (msg = 0; msg < 4; msg++)
                 if (test_and_clear_bit(msg, &psurge_smp_message[cpu]))
-                        smp_message_recv(msg, regs);
+                        smp_message_recv(msg);
 }
 
-irqreturn_t psurge_primary_intr(int irq, void *d, struct pt_regs *regs)
+irqreturn_t psurge_primary_intr(int irq, void *d)
 {
-        psurge_smp_message_recv(regs);
+        psurge_smp_message_recv();
         return IRQ_HANDLED;
 }
 
@@ -328,6 +328,7 @@ static void __init smp_psurge_kick_cpu(int nr)
 {
         unsigned long start = __pa(__secondary_start_pmac_0) + nr * 8;
         unsigned long a;
+        int i;
 
         /* may need to flush here if secondary bats aren't setup */
         for (a = KERNELBASE; a < KERNELBASE + 0x800000; a += 32)
@@ -340,7 +341,11 @@ static void __init smp_psurge_kick_cpu(int nr)
         mb();
 
         psurge_set_ipi(nr);
-        udelay(10);
+        /*
+         * We can't use udelay here because the timebase is now frozen.
+         */
+        for (i = 0; i < 2000; ++i)
+                barrier();
         psurge_clr_ipi(nr);
 
         if (ppc_md.progress) ppc_md.progress("smp_psurge_kick_cpu - done", 0x354);
diff --git a/arch/powerpc/platforms/pseries/iommu.c b/arch/powerpc/platforms/pseries/iommu.c
index bbf2e34dc358..d24ba547e53f 100644
--- a/arch/powerpc/platforms/pseries/iommu.c
+++ b/arch/powerpc/platforms/pseries/iommu.c
@@ -267,7 +267,8 @@ static void iommu_table_setparms(struct pci_controller *phb,
                                  struct iommu_table *tbl)
 {
         struct device_node *node;
-        const unsigned long *basep, *sizep;
+        const unsigned long *basep;
+        const u32 *sizep;
 
         node = (struct device_node *)phb->arch_data;
 
diff --git a/arch/powerpc/platforms/pseries/ras.c b/arch/powerpc/platforms/pseries/ras.c
index 311ed1993fc0..b1d3d161249e 100644
--- a/arch/powerpc/platforms/pseries/ras.c
+++ b/arch/powerpc/platforms/pseries/ras.c
@@ -65,16 +65,14 @@ static int ras_check_exception_token;
 #define EPOW_SENSOR_INDEX       0
 #define RAS_VECTOR_OFFSET       0x500
 
-static irqreturn_t ras_epow_interrupt(int irq, void *dev_id,
-                                        struct pt_regs * regs);
-static irqreturn_t ras_error_interrupt(int irq, void *dev_id,
-                                        struct pt_regs * regs);
+static irqreturn_t ras_epow_interrupt(int irq, void *dev_id);
+static irqreturn_t ras_error_interrupt(int irq, void *dev_id);
 
 /* #define DEBUG */
 
 
 static void request_ras_irqs(struct device_node *np,
-                        irqreturn_t (*handler)(int, void *, struct pt_regs *),
+                        irq_handler_t handler,
                         const char *name)
 {
         int i, index, count = 0;
@@ -166,8 +164,7 @@ __initcall(init_ras_IRQ);
  * to examine the type of power failure and take appropriate action where
  * the time horizon permits something useful to be done.
  */
-static irqreturn_t
-ras_epow_interrupt(int irq, void *dev_id, struct pt_regs * regs)
+static irqreturn_t ras_epow_interrupt(int irq, void *dev_id)
 {
         int status = 0xdeadbeef;
         int state = 0;
@@ -210,8 +207,7 @@ ras_epow_interrupt(int irq, void *dev_id, struct pt_regs * regs)
  * For nonrecoverable errors, an error is logged and we stop all processing
  * as quickly as possible in order to prevent propagation of the failure.
  */
-static irqreturn_t
-ras_error_interrupt(int irq, void *dev_id, struct pt_regs * regs)
+static irqreturn_t ras_error_interrupt(int irq, void *dev_id)
 {
         struct rtas_error_log *rtas_elog;
         int status = 0xdeadbeef;
diff --git a/arch/powerpc/platforms/pseries/setup.c b/arch/powerpc/platforms/pseries/setup.c
index f82b13e531a3..89a8119f988d 100644
--- a/arch/powerpc/platforms/pseries/setup.c
+++ b/arch/powerpc/platforms/pseries/setup.c
@@ -121,12 +121,11 @@ static void __init fwnmi_init(void)
                 fwnmi_active = 1;
 }
 
-void pseries_8259_cascade(unsigned int irq, struct irq_desc *desc,
-                          struct pt_regs *regs)
+void pseries_8259_cascade(unsigned int irq, struct irq_desc *desc)
 {
-        unsigned int cascade_irq = i8259_irq(regs);
+        unsigned int cascade_irq = i8259_irq();
         if (cascade_irq != NO_IRQ)
-                generic_handle_irq(cascade_irq, regs);
+                generic_handle_irq(cascade_irq);
         desc->chip->eoi(irq);
 }
 
diff --git a/arch/powerpc/platforms/pseries/xics.c b/arch/powerpc/platforms/pseries/xics.c
index 253972e5479f..d071abe78ab1 100644
--- a/arch/powerpc/platforms/pseries/xics.c
+++ b/arch/powerpc/platforms/pseries/xics.c
@@ -308,14 +308,14 @@ static inline unsigned int xics_remap_irq(unsigned int vec)
         return NO_IRQ;
 }
 
-static unsigned int xics_get_irq_direct(struct pt_regs *regs)
+static unsigned int xics_get_irq_direct(void)
 {
         unsigned int cpu = smp_processor_id();
 
         return xics_remap_irq(direct_xirr_info_get(cpu));
 }
 
-static unsigned int xics_get_irq_lpar(struct pt_regs *regs)
+static unsigned int xics_get_irq_lpar(void)
 {
         unsigned int cpu = smp_processor_id();
 
@@ -324,7 +324,7 @@ static unsigned int xics_get_irq_lpar(struct pt_regs *regs)
 
 #ifdef CONFIG_SMP
 
-static irqreturn_t xics_ipi_dispatch(int cpu, struct pt_regs *regs)
+static irqreturn_t xics_ipi_dispatch(int cpu)
 {
         WARN_ON(cpu_is_offline(cpu));
 
@@ -332,47 +332,47 @@ static irqreturn_t xics_ipi_dispatch(int cpu, struct pt_regs *regs)
                 if (test_and_clear_bit(PPC_MSG_CALL_FUNCTION,
                                        &xics_ipi_message[cpu].value)) {
                         mb();
-                        smp_message_recv(PPC_MSG_CALL_FUNCTION, regs);
+                        smp_message_recv(PPC_MSG_CALL_FUNCTION);
                 }
                 if (test_and_clear_bit(PPC_MSG_RESCHEDULE,
                                        &xics_ipi_message[cpu].value)) {
                         mb();
-                        smp_message_recv(PPC_MSG_RESCHEDULE, regs);
+                        smp_message_recv(PPC_MSG_RESCHEDULE);
                 }
 #if 0
                 if (test_and_clear_bit(PPC_MSG_MIGRATE_TASK,
                                        &xics_ipi_message[cpu].value)) {
                         mb();
-                        smp_message_recv(PPC_MSG_MIGRATE_TASK, regs);
+                        smp_message_recv(PPC_MSG_MIGRATE_TASK);
                 }
 #endif
 #if defined(CONFIG_DEBUGGER) || defined(CONFIG_KEXEC)
                 if (test_and_clear_bit(PPC_MSG_DEBUGGER_BREAK,
                                        &xics_ipi_message[cpu].value)) {
                         mb();
-                        smp_message_recv(PPC_MSG_DEBUGGER_BREAK, regs);
+                        smp_message_recv(PPC_MSG_DEBUGGER_BREAK);
                 }
 #endif
         }
         return IRQ_HANDLED;
 }
 
-static irqreturn_t xics_ipi_action_direct(int irq, void *dev_id, struct pt_regs *regs)
+static irqreturn_t xics_ipi_action_direct(int irq, void *dev_id)
 {
         int cpu = smp_processor_id();
 
         direct_qirr_info(cpu, 0xff);
 
-        return xics_ipi_dispatch(cpu, regs);
+        return xics_ipi_dispatch(cpu);
 }
 
-static irqreturn_t xics_ipi_action_lpar(int irq, void *dev_id, struct pt_regs *regs)
+static irqreturn_t xics_ipi_action_lpar(int irq, void *dev_id)
 {
         int cpu = smp_processor_id();
 
         lpar_qirr_info(cpu, 0xff);
 
-        return xics_ipi_dispatch(cpu, regs);
+        return xics_ipi_dispatch(cpu);
 }
 
 void xics_cause_IPI(int cpu)
diff --git a/arch/powerpc/platforms/pseries/xics.h b/arch/powerpc/platforms/pseries/xics.h
index 6ee1055b0ffb..db0ec3ba3ae2 100644
--- a/arch/powerpc/platforms/pseries/xics.h
+++ b/arch/powerpc/platforms/pseries/xics.h
@@ -31,7 +31,6 @@ struct xics_ipi_struct {
 extern struct xics_ipi_struct xics_ipi_message[NR_CPUS] __cacheline_aligned;
 
 struct irq_desc;
-extern void pseries_8259_cascade(unsigned int irq, struct irq_desc *desc,
-                                 struct pt_regs *regs);
+extern void pseries_8259_cascade(unsigned int irq, struct irq_desc *desc);
 
 #endif /* _POWERPC_KERNEL_XICS_H */
diff --git a/arch/powerpc/sysdev/cpm2_pic.c b/arch/powerpc/sysdev/cpm2_pic.c
index 28b018994746..767ee6651adc 100644
--- a/arch/powerpc/sysdev/cpm2_pic.c
+++ b/arch/powerpc/sysdev/cpm2_pic.c
@@ -147,7 +147,7 @@ static struct irq_chip cpm2_pic = {
         .end = cpm2_end_irq,
 };
 
-unsigned int cpm2_get_irq(struct pt_regs *regs)
+unsigned int cpm2_get_irq(void)
 {
         int irq;
         unsigned long bits;
diff --git a/arch/powerpc/sysdev/cpm2_pic.h b/arch/powerpc/sysdev/cpm2_pic.h
index 3c513e5a688e..2840616529e4 100644
--- a/arch/powerpc/sysdev/cpm2_pic.h
+++ b/arch/powerpc/sysdev/cpm2_pic.h
@@ -3,7 +3,7 @@
 
 extern intctl_cpm2_t *cpm2_intctl;
 
-extern unsigned int cpm2_get_irq(struct pt_regs *regs);
+extern unsigned int cpm2_get_irq(void);
 
 extern void cpm2_pic_init(struct device_node*);
 
diff --git a/arch/powerpc/sysdev/fsl_soc.c b/arch/powerpc/sysdev/fsl_soc.c
index 7d759f1c26b1..dbe92ae20333 100644
--- a/arch/powerpc/sysdev/fsl_soc.c
+++ b/arch/powerpc/sysdev/fsl_soc.c
@@ -567,7 +567,7 @@ static int __init fs_enet_of_init(void)
                 struct resource r[4];
                 struct device_node *phy, *mdio;
                 struct fs_platform_info fs_enet_data;
-                const unsigned int *id, *phy_addr, phy_irq;
+                const unsigned int *id, *phy_addr, *phy_irq;
                 const void *mac_addr;
                 const phandle *ph;
                 const char *model;
@@ -641,7 +641,7 @@ static int __init fs_enet_of_init(void)
 
                 if (strstr(model, "FCC")) {
                         int fcc_index = *id - 1;
-                        unsigned char* mdio_bb_prop;
+                        const unsigned char *mdio_bb_prop;
 
                         fs_enet_data.dpram_offset = (u32)cpm_dpram_addr(0);
                         fs_enet_data.rx_ring = 32;
@@ -708,8 +708,9 @@ static int __init fs_enet_of_init(void)
                         ret = platform_device_add_data(fs_enet_dev, &fs_enet_data,
                                                      sizeof(struct
                                                             fs_platform_info));
-                if (ret)
-                        goto unreg;
+                        if (ret)
+                                goto unreg;
+                }
         }
         return 0;
 
diff --git a/arch/powerpc/sysdev/i8259.c b/arch/powerpc/sysdev/i8259.c
index 26a6a3becd66..0450265d73bb 100644
--- a/arch/powerpc/sysdev/i8259.c
+++ b/arch/powerpc/sysdev/i8259.c
@@ -34,7 +34,7 @@ static struct irq_host *i8259_host;
  * which is called.  It should be noted that polling is broken on some
  * IBM and Motorola PReP boxes so we must use the int-ack feature on them.
  */
-unsigned int i8259_irq(struct pt_regs *regs)
+unsigned int i8259_irq(void)
 {
         int irq;
         int lock = 0;
diff --git a/arch/powerpc/sysdev/ipic.c b/arch/powerpc/sysdev/ipic.c
index 6ebdae8e6f69..bc4d4a7f9657 100644
--- a/arch/powerpc/sysdev/ipic.c
+++ b/arch/powerpc/sysdev/ipic.c
@@ -709,7 +709,7 @@ void ipic_clear_mcp_status(u32 mask)
 }
 
 /* Return an interrupt vector or NO_IRQ if no interrupt is pending. */
-unsigned int ipic_get_irq(struct pt_regs *regs)
+unsigned int ipic_get_irq(void)
 {
         int irq;
 
diff --git a/arch/powerpc/sysdev/mpic.c b/arch/powerpc/sysdev/mpic.c
index 3ee03a9a98fa..ba4833f57d47 100644
--- a/arch/powerpc/sysdev/mpic.c
+++ b/arch/powerpc/sysdev/mpic.c
@@ -489,9 +489,9 @@ static inline void mpic_eoi(struct mpic *mpic)
 }
 
 #ifdef CONFIG_SMP
-static irqreturn_t mpic_ipi_action(int irq, void *dev_id, struct pt_regs *regs)
+static irqreturn_t mpic_ipi_action(int irq, void *dev_id)
 {
-        smp_message_recv(mpic_irq_to_hw(irq) - MPIC_VEC_IPI_0, regs);
+        smp_message_recv(mpic_irq_to_hw(irq) - MPIC_VEC_IPI_0);
         return IRQ_HANDLED;
 }
 #endif /* CONFIG_SMP */
@@ -1217,7 +1217,7 @@ void mpic_send_ipi(unsigned int ipi_no, unsigned int cpu_mask)
                        mpic_physmask(cpu_mask & cpus_addr(cpu_online_map)[0]));
 }
 
-unsigned int mpic_get_one_irq(struct mpic *mpic, struct pt_regs *regs)
+unsigned int mpic_get_one_irq(struct mpic *mpic)
 {
         u32 src;
 
@@ -1230,13 +1230,13 @@ unsigned int mpic_get_one_irq(struct mpic *mpic, struct pt_regs *regs)
         return irq_linear_revmap(mpic->irqhost, src);
 }
 
-unsigned int mpic_get_irq(struct pt_regs *regs)
+unsigned int mpic_get_irq(void)
 {
         struct mpic *mpic = mpic_primary;
 
         BUG_ON(mpic == NULL);
 
-        return mpic_get_one_irq(mpic, regs);
+        return mpic_get_one_irq(mpic);
 }
 
 
diff --git a/arch/powerpc/sysdev/qe_lib/qe_ic.c b/arch/powerpc/sysdev/qe_lib/qe_ic.c
index c229d07d4957..6995f51b9488 100644
--- a/arch/powerpc/sysdev/qe_lib/qe_ic.c
+++ b/arch/powerpc/sysdev/qe_lib/qe_ic.c
@@ -300,7 +300,7 @@ static struct irq_host_ops qe_ic_host_ops = {
 };
 
 /* Return an interrupt vector or NO_IRQ if no interrupt is pending. */
-unsigned int qe_ic_get_low_irq(struct qe_ic *qe_ic, struct pt_regs *regs)
+unsigned int qe_ic_get_low_irq(struct qe_ic *qe_ic)
 {
         int irq;
 
@@ -316,7 +316,7 @@ unsigned int qe_ic_get_low_irq(struct qe_ic *qe_ic, struct pt_regs *regs)
 }
 
 /* Return an interrupt vector or NO_IRQ if no interrupt is pending. */
-unsigned int qe_ic_get_high_irq(struct qe_ic *qe_ic, struct pt_regs *regs)
+unsigned int qe_ic_get_high_irq(struct qe_ic *qe_ic)
 {
         int irq;
 
@@ -333,33 +333,31 @@ unsigned int qe_ic_get_high_irq(struct qe_ic *qe_ic, struct pt_regs *regs)
 
 /* FIXME: We mask all the QE Low interrupts while handling.  We should
  * let other interrupt come in, but BAD interrupts are generated */
-void fastcall qe_ic_cascade_low(unsigned int irq, struct irq_desc *desc,
-                                struct pt_regs *regs)
+void fastcall qe_ic_cascade_low(unsigned int irq, struct irq_desc *desc)
 {
         struct qe_ic *qe_ic = desc->handler_data;
         struct irq_chip *chip = irq_desc[irq].chip;
 
-        unsigned int cascade_irq = qe_ic_get_low_irq(qe_ic, regs);
+        unsigned int cascade_irq = qe_ic_get_low_irq(qe_ic);
 
         chip->mask_ack(irq);
         if (cascade_irq != NO_IRQ)
-                generic_handle_irq(cascade_irq, regs);
+                generic_handle_irq(cascade_irq);
         chip->unmask(irq);
 }
 
 /* FIXME: We mask all the QE High interrupts while handling.  We should
  * let other interrupt come in, but BAD interrupts are generated */
-void fastcall qe_ic_cascade_high(unsigned int irq, struct irq_desc *desc,
-                                 struct pt_regs *regs)
+void fastcall qe_ic_cascade_high(unsigned int irq, struct irq_desc *desc)
 {
         struct qe_ic *qe_ic = desc->handler_data;
         struct irq_chip *chip = irq_desc[irq].chip;
 
-        unsigned int cascade_irq = qe_ic_get_high_irq(qe_ic, regs);
+        unsigned int cascade_irq = qe_ic_get_high_irq(qe_ic);
 
         chip->mask_ack(irq);
         if (cascade_irq != NO_IRQ)
-                generic_handle_irq(cascade_irq, regs);
+                generic_handle_irq(cascade_irq);
         chip->unmask(irq);
 }
 
diff --git a/arch/powerpc/sysdev/qe_lib/qe_io.c b/arch/powerpc/sysdev/qe_lib/qe_io.c
index aea435970389..0afe6bfe3714 100644
--- a/arch/powerpc/sysdev/qe_lib/qe_io.c
+++ b/arch/powerpc/sysdev/qe_lib/qe_io.c
@@ -14,7 +14,6 @@
  * option) any later version.
  */
 
-#include <linux/config.h>
 #include <linux/stddef.h>
 #include <linux/kernel.h>
 #include <linux/init.h>
diff --git a/arch/powerpc/sysdev/tsi108_pci.c b/arch/powerpc/sysdev/tsi108_pci.c
index c28f69bef8e2..322f86e93de5 100644
--- a/arch/powerpc/sysdev/tsi108_pci.c
+++ b/arch/powerpc/sysdev/tsi108_pci.c
@@ -405,11 +405,10 @@ void __init tsi108_pci_int_init(void)
         init_pci_source();
 }
 
-void tsi108_irq_cascade(unsigned int irq, struct irq_desc *desc,
-                            struct pt_regs *regs)
+void tsi108_irq_cascade(unsigned int irq, struct irq_desc *desc)
 {
         unsigned int cascade_irq = get_pci_source();
         if (cascade_irq != NO_IRQ)
-                generic_handle_irq(cascade_irq, regs);
+                generic_handle_irq(cascade_irq);
         desc->chip->eoi(irq);
 }
diff --git a/arch/powerpc/xmon/xmon.c b/arch/powerpc/xmon/xmon.c
index 708236f34746..f56ffef4defa 100644
--- a/arch/powerpc/xmon/xmon.c
+++ b/arch/powerpc/xmon/xmon.c
@@ -21,6 +21,7 @@
 #include <linux/module.h>
 #include <linux/sysrq.h>
 #include <linux/interrupt.h>
+#include <linux/irq.h>
 
 #include <asm/ptrace.h>
 #include <asm/string.h>
@@ -35,6 +36,7 @@
 #include <asm/rtas.h>
 #include <asm/sstep.h>
 #include <asm/bug.h>
+#include <asm/irq_regs.h>
 
 #ifdef CONFIG_PPC64
 #include <asm/hvcall.h>
@@ -520,13 +522,12 @@ int xmon(struct pt_regs *excp)
 }
 EXPORT_SYMBOL(xmon);
 
-irqreturn_t
-xmon_irq(int irq, void *d, struct pt_regs *regs)
+irqreturn_t xmon_irq(int irq, void *d)
 {
         unsigned long flags;
         local_irq_save(flags);
         printf("Keyboard interrupt\n");
-        xmon(regs);
+        xmon(get_irq_regs());
         local_irq_restore(flags);
         return IRQ_HANDLED;
 }
@@ -2577,12 +2578,11 @@ void xmon_init(int enable)
 }
 
 #ifdef CONFIG_MAGIC_SYSRQ
-static void sysrq_handle_xmon(int key, struct pt_regs *pt_regs,
-                              struct tty_struct *tty) 
+static void sysrq_handle_xmon(int key, struct tty_struct *tty) 
 {
         /* ensure xmon is enabled */
         xmon_init(1);
-        debugger(pt_regs);
+        debugger(get_irq_regs());
 }
 
 static struct sysrq_key_op sysrq_xmon_op = 
diff --git a/arch/ppc/4xx_io/serial_sicc.c b/arch/ppc/4xx_io/serial_sicc.c
index 87fe9a89dba7..e35483961b90 100644
--- a/arch/ppc/4xx_io/serial_sicc.c
+++ b/arch/ppc/4xx_io/serial_sicc.c
@@ -414,7 +414,7 @@ static void siccuart_event(struct SICC_info *info, int event)
 }
 
 static void
-siccuart_rx_chars(struct SICC_info *info, struct pt_regs *regs)
+siccuart_rx_chars(struct SICC_info *info)
 {
     struct tty_struct *tty = info->tty;
     unsigned int status, ch, rsr, flg, ignored = 0;
@@ -441,7 +441,7 @@ siccuart_rx_chars(struct SICC_info *info, struct pt_regs *regs)
 #ifdef SUPPORT_SYSRQ
         if (info->sysrq) {
             if (ch && time_before(jiffies, info->sysrq)) {
-                handle_sysrq(ch, regs, NULL);
+                handle_sysrq(ch, NULL);
                 info->sysrq = 0;
                 goto ignore_char;
             }
@@ -553,15 +553,15 @@ static void siccuart_tx_chars(struct SICC_info *info)
 }
 
 
-static irqreturn_t siccuart_int_rx(int irq, void *dev_id, struct pt_regs *regs)
+static irqreturn_t siccuart_int_rx(int irq, void *dev_id)
 {
     struct SICC_info *info = dev_id;
-    siccuart_rx_chars(info, regs);
+    siccuart_rx_chars(info)
     return IRQ_HANDLED;
 }
 
 
-static irqreturn_t siccuart_int_tx(int irq, void *dev_id, struct pt_regs *regs)
+static irqreturn_t siccuart_int_tx(int irq, void *dev_id)
 {
     struct SICC_info *info = dev_id;
     siccuart_tx_chars(info);
diff --git a/arch/ppc/8260_io/enet.c b/arch/ppc/8260_io/enet.c
index ac6d55fe2235..a6056c29cf00 100644
--- a/arch/ppc/8260_io/enet.c
+++ b/arch/ppc/8260_io/enet.c
@@ -122,7 +122,7 @@ struct scc_enet_private {
 static int scc_enet_open(struct net_device *dev);
 static int scc_enet_start_xmit(struct sk_buff *skb, struct net_device *dev);
 static int scc_enet_rx(struct net_device *dev);
-static irqreturn_t scc_enet_interrupt(int irq, void *dev_id, struct pt_regs *);
+static irqreturn_t scc_enet_interrupt(int irq, void *dev_id);
 static int scc_enet_close(struct net_device *dev);
 static struct net_device_stats *scc_enet_get_stats(struct net_device *dev);
 static void set_multicast_list(struct net_device *dev);
@@ -273,7 +273,7 @@ scc_enet_timeout(struct net_device *dev)
  * This is called from the CPM handler, not the MPC core interrupt.
  */
 static irqreturn_t
-scc_enet_interrupt(int irq, void * dev_id, struct pt_regs * regs)
+scc_enet_interrupt(int irq, void * dev_id)
 {
         struct  net_device *dev = dev_id;
         volatile struct scc_enet_private *cep;
diff --git a/arch/ppc/8260_io/fcc_enet.c b/arch/ppc/8260_io/fcc_enet.c
index e347fe88316d..2e1943e27819 100644
--- a/arch/ppc/8260_io/fcc_enet.c
+++ b/arch/ppc/8260_io/fcc_enet.c
@@ -140,7 +140,7 @@ typedef struct {
 static int fcc_enet_open(struct net_device *dev);
 static int fcc_enet_start_xmit(struct sk_buff *skb, struct net_device *dev);
 static int fcc_enet_rx(struct net_device *dev);
-static irqreturn_t fcc_enet_interrupt(int irq, void *dev_id, struct pt_regs *);
+static irqreturn_t fcc_enet_interrupt(int irq, void *dev_id);
 static int fcc_enet_close(struct net_device *dev);
 static struct net_device_stats *fcc_enet_get_stats(struct net_device *dev);
 /* static void set_multicast_list(struct net_device *dev); */
@@ -524,7 +524,7 @@ fcc_enet_timeout(struct net_device *dev)
 
 /* The interrupt handler. */
 static irqreturn_t
-fcc_enet_interrupt(int irq, void * dev_id, struct pt_regs * regs)
+fcc_enet_interrupt(int irq, void * dev_id)
 {
         struct  net_device *dev = dev_id;
         volatile struct fcc_enet_private *cep;
@@ -1563,7 +1563,7 @@ mii_discover_phy(uint mii_reg, struct net_device *dev)
 #ifdef PHY_INTERRUPT
 /* This interrupt occurs when the PHY detects a link change. */
 static irqreturn_t
-mii_link_interrupt(int irq, void * dev_id, struct pt_regs * regs)
+mii_link_interrupt(int irq, void * dev_id)
 {
         struct  net_device *dev = dev_id;
         struct fcc_enet_private *fep = dev->priv;
diff --git a/arch/ppc/8xx_io/commproc.c b/arch/ppc/8xx_io/commproc.c
index 9b3ace26280c..3b23bcb35b7a 100644
--- a/arch/ppc/8xx_io/commproc.c
+++ b/arch/ppc/8xx_io/commproc.c
@@ -47,12 +47,12 @@ cpm8xx_t	*cpmp;		/* Pointer to comm processor space */
 /* CPM interrupt vector functions.
 */
 struct  cpm_action {
-        void    (*handler)(void *, struct pt_regs * regs);
+        void    (*handler)(void *);
         void    *dev_id;
 };
 static  struct  cpm_action cpm_vecs[CPMVEC_NR];
-static  irqreturn_t cpm_interrupt(int irq, void * dev, struct pt_regs * regs);
-static  irqreturn_t cpm_error_interrupt(int irq, void *dev, struct pt_regs * regs);
+static  irqreturn_t cpm_interrupt(int irq, void * dev);
+static  irqreturn_t cpm_error_interrupt(int irq, void *dev);
 static  void    alloc_host_memory(void);
 /* Define a table of names to identify CPM interrupt handlers in
  * /proc/interrupts.
@@ -205,7 +205,7 @@ cpm_interrupt_init(void)
  * Get the CPM interrupt vector.
  */
 int
-cpm_get_irq(struct pt_regs *regs)
+cpm_get_irq(void)
 {
         int cpm_vec;
 
@@ -222,7 +222,7 @@ cpm_get_irq(struct pt_regs *regs)
 /* CPM interrupt controller cascade interrupt.
 */
 static  irqreturn_t
-cpm_interrupt(int irq, void * dev, struct pt_regs * regs)
+cpm_interrupt(int irq, void * dev)
 {
         /* This interrupt handler never actually gets called.  It is
          * installed only to unmask the CPM cascade interrupt in the SIU
@@ -237,7 +237,7 @@ cpm_interrupt(int irq, void * dev, struct pt_regs * regs)
  * tests in the interrupt handler.
  */
 static  irqreturn_t
-cpm_error_interrupt(int irq, void *dev, struct pt_regs *regs)
+cpm_error_interrupt(int irq, void *dev)
 {
         return IRQ_HANDLED;
 }
@@ -246,11 +246,11 @@ cpm_error_interrupt(int irq, void *dev, struct pt_regs *regs)
  * request_irq() to the handler prototype required by cpm_install_handler().
  */
 static irqreturn_t
-cpm_handler_helper(int irq, void *dev_id, struct pt_regs *regs)
+cpm_handler_helper(int irq, void *dev_id)
 {
         int cpm_vec = irq - CPM_IRQ_OFFSET;
 
-        (*cpm_vecs[cpm_vec].handler)(dev_id, regs);
+        (*cpm_vecs[cpm_vec].handler)(dev_id);
 
         return IRQ_HANDLED;
 }
@@ -267,8 +267,7 @@ cpm_handler_helper(int irq, void *dev_id, struct pt_regs *regs)
  * request_irq() or cpm_install_handler().
  */
 void
-cpm_install_handler(int cpm_vec, void (*handler)(void *, struct pt_regs *regs),
-                    void *dev_id)
+cpm_install_handler(int cpm_vec, void (*handler)(void *), void *dev_id)
 {
         int err;
 
diff --git a/arch/ppc/8xx_io/cs4218_tdm.c b/arch/ppc/8xx_io/cs4218_tdm.c
index f5f300fc213d..959d31c26cbb 100644
--- a/arch/ppc/8xx_io/cs4218_tdm.c
+++ b/arch/ppc/8xx_io/cs4218_tdm.c
@@ -331,7 +331,7 @@ static int CS_SetFormat(int format);
 static int CS_SetVolume(int volume);
 static void cs4218_tdm_tx_intr(void *devid);
 static void cs4218_tdm_rx_intr(void *devid);
-static void cs4218_intr(void *devid, struct pt_regs *regs);
+static void cs4218_intr(void *devid);
 static int cs_get_volume(uint reg);
 static int cs_volume_setter(int volume, int mute);
 static int cs_get_gain(uint reg);
@@ -2646,7 +2646,7 @@ int __init tdm8xx_sound_init(void)
  * full duplex operation.
  */
 static void
-cs4218_intr(void *dev_id, struct pt_regs *regs)
+cs4218_intr(void *dev_id)
 {
         volatile smc_t  *sp;
         volatile cpm8xx_t       *cp;
diff --git a/arch/ppc/8xx_io/enet.c b/arch/ppc/8xx_io/enet.c
index a695375c3e4c..b23c45bc151a 100644
--- a/arch/ppc/8xx_io/enet.c
+++ b/arch/ppc/8xx_io/enet.c
@@ -149,7 +149,7 @@ struct scc_enet_private {
 static int scc_enet_open(struct net_device *dev);
 static int scc_enet_start_xmit(struct sk_buff *skb, struct net_device *dev);
 static int scc_enet_rx(struct net_device *dev);
-static void scc_enet_interrupt(void *dev_id, struct pt_regs *regs);
+static void scc_enet_interrupt(void *dev_id);
 static int scc_enet_close(struct net_device *dev);
 static struct net_device_stats *scc_enet_get_stats(struct net_device *dev);
 static void set_multicast_list(struct net_device *dev);
@@ -305,7 +305,7 @@ scc_enet_timeout(struct net_device *dev)
  * This is called from the CPM handler, not the MPC core interrupt.
  */
 static void
-scc_enet_interrupt(void *dev_id, struct pt_regs *regs)
+scc_enet_interrupt(void *dev_id)
 {
         struct  net_device *dev = dev_id;
         volatile struct scc_enet_private *cep;
diff --git a/arch/ppc/8xx_io/fec.c b/arch/ppc/8xx_io/fec.c
index 8b6295bbb564..2f9fa9e3d331 100644
--- a/arch/ppc/8xx_io/fec.c
+++ b/arch/ppc/8xx_io/fec.c
@@ -198,8 +198,7 @@ static int fec_enet_start_xmit(struct sk_buff *skb, struct net_device *dev);
 #ifdef  CONFIG_USE_MDIO
 static void fec_enet_mii(struct net_device *dev);
 #endif  /* CONFIG_USE_MDIO */
-static irqreturn_t fec_enet_interrupt(int irq, void * dev_id,
-                                                        struct pt_regs * regs);
+static irqreturn_t fec_enet_interrupt(int irq, void * dev_id);
 #ifdef CONFIG_FEC_PACKETHOOK
 static void  fec_enet_tx(struct net_device *dev, __u32 regval);
 static void  fec_enet_rx(struct net_device *dev, __u32 regval);
@@ -472,7 +471,7 @@ fec_timeout(struct net_device *dev)
  * This is called from the MPC core interrupt.
  */
 static  irqreturn_t
-fec_enet_interrupt(int irq, void * dev_id, struct pt_regs * regs)
+fec_enet_interrupt(int irq, void * dev_id)
 {
         struct  net_device *dev = dev_id;
         volatile fec_t  *fecp;
@@ -1408,7 +1407,7 @@ static
 #ifdef CONFIG_RPXCLASSIC
 void mii_link_interrupt(void *dev_id)
 #else
-irqreturn_t mii_link_interrupt(int irq, void * dev_id, struct pt_regs * regs)
+irqreturn_t mii_link_interrupt(int irq, void * dev_id)
 #endif
 {
 #ifdef  CONFIG_USE_MDIO
diff --git a/arch/ppc/kernel/smp.c b/arch/ppc/kernel/smp.c
index ca57e896a36c..96a55972b986 100644
--- a/arch/ppc/kernel/smp.c
+++ b/arch/ppc/kernel/smp.c
@@ -84,7 +84,7 @@ smp_message_pass(int target, int msg)
 /*
  * Common functions
  */
-void smp_message_recv(int msg, struct pt_regs *regs)
+void smp_message_recv(int msg)
 {
         atomic_inc(&ipi_recv);
 
@@ -100,7 +100,7 @@ void smp_message_recv(int msg, struct pt_regs *regs)
                 break;
 #ifdef CONFIG_XMON
         case PPC_MSG_XMON_BREAK:
-                xmon(regs);
+                xmon(get_irq_regs());
                 break;
 #endif /* CONFIG_XMON */
         default:
diff --git a/arch/ppc/kernel/time.c b/arch/ppc/kernel/time.c
index 187388625a76..d4b2cf74da6a 100644
--- a/arch/ppc/kernel/time.c
+++ b/arch/ppc/kernel/time.c
@@ -142,7 +142,7 @@ void timer_interrupt(struct pt_regs * regs)
         while ((next_dec = tb_ticks_per_jiffy - tb_delta(&jiffy_stamp)) <= 0) {
                 jiffy_stamp += tb_ticks_per_jiffy;
                 
-                profile_tick(CPU_PROFILING, regs);
+                profile_tick(CPU_PROFILING);
                 update_process_times(user_mode(regs));
 
                 if (smp_processor_id())
diff --git a/arch/ppc/platforms/85xx/mpc8560_ads.c b/arch/ppc/platforms/85xx/mpc8560_ads.c
index 94badafe4ef1..14ecec7bbed7 100644
--- a/arch/ppc/platforms/85xx/mpc8560_ads.c
+++ b/arch/ppc/platforms/85xx/mpc8560_ads.c
@@ -211,10 +211,10 @@ mpc8560ads_setup_arch(void)
 #endif
 }
 
-static irqreturn_t cpm2_cascade(int irq, void *dev_id, struct pt_regs *regs)
+static irqreturn_t cpm2_cascade(int irq, void *dev_id)
 {
-        while ((irq = cpm2_get_irq(regs)) >= 0)
-                __do_IRQ(irq, regs);
+        while ((irq = cpm2_get_irq()) >= 0)
+                __do_IRQ(irq);
         return IRQ_HANDLED;
 }
 
diff --git a/arch/ppc/platforms/85xx/mpc85xx_cds_common.c b/arch/ppc/platforms/85xx/mpc85xx_cds_common.c
index 75204588a3e7..5ce0f69c1db6 100644
--- a/arch/ppc/platforms/85xx/mpc85xx_cds_common.c
+++ b/arch/ppc/platforms/85xx/mpc85xx_cds_common.c
@@ -127,10 +127,10 @@ mpc85xx_cds_show_cpuinfo(struct seq_file *m)
 }
 
 #ifdef CONFIG_CPM2
-static irqreturn_t cpm2_cascade(int irq, void *dev_id, struct pt_regs *regs)
+static irqreturn_t cpm2_cascade(int irq, void *dev_id)
 {
-        while((irq = cpm2_get_irq(regs)) >= 0)
-                __do_IRQ(irq, regs);
+        while((irq = cpm2_get_irq()) >= 0)
+                __do_IRQ(irq);
         return IRQ_HANDLED;
 }
 
diff --git a/arch/ppc/platforms/85xx/stx_gp3.c b/arch/ppc/platforms/85xx/stx_gp3.c
index 495aa79bb3a1..4bb18ab27672 100644
--- a/arch/ppc/platforms/85xx/stx_gp3.c
+++ b/arch/ppc/platforms/85xx/stx_gp3.c
@@ -156,10 +156,10 @@ gp3_setup_arch(void)
         printk ("bi_immr_base = %8.8lx\n", binfo->bi_immr_base);
 }
 
-static irqreturn_t cpm2_cascade(int irq, void *dev_id, struct pt_regs *regs)
+static irqreturn_t cpm2_cascade(int irq, void *dev_id)
 {
-        while ((irq = cpm2_get_irq(regs)) >= 0)
-                __do_IRQ(irq, regs);
+        while ((irq = cpm2_get_irq()) >= 0)
+                __do_IRQ(irq);
 
         return IRQ_HANDLED;
 }
diff --git a/arch/ppc/platforms/85xx/tqm85xx.c b/arch/ppc/platforms/85xx/tqm85xx.c
index 189ed4175f9f..dd45f2e18449 100644
--- a/arch/ppc/platforms/85xx/tqm85xx.c
+++ b/arch/ppc/platforms/85xx/tqm85xx.c
@@ -181,10 +181,10 @@ tqm85xx_setup_arch(void)
 }
 
 #ifdef CONFIG_MPC8560
-static irqreturn_t cpm2_cascade(int irq, void *dev_id, struct pt_regs *regs)
+static irqreturn_t cpm2_cascade(int irq, void *dev_id)
 {
-        while ((irq = cpm2_get_irq(regs)) >= 0)
-                __do_IRQ(irq, regs);
+        while ((irq = cpm2_get_irq()) >= 0)
+                __do_IRQ(irq);
         return IRQ_HANDLED;
 }
 
diff --git a/arch/ppc/platforms/apus_setup.c b/arch/ppc/platforms/apus_setup.c
index 1d034ead2c9a..063274d2c503 100644
--- a/arch/ppc/platforms/apus_setup.c
+++ b/arch/ppc/platforms/apus_setup.c
@@ -492,7 +492,7 @@ apus_halt(void)
 
 static unsigned char last_ipl[8];
 
-int apus_get_irq(struct pt_regs* regs)
+int apus_get_irq(void)
 {
         unsigned char ipl_emu, mask;
         unsigned int level;
diff --git a/arch/ppc/platforms/hdpu.c b/arch/ppc/platforms/hdpu.c
index e0f112a1fd0b..d809e17aa536 100644
--- a/arch/ppc/platforms/hdpu.c
+++ b/arch/ppc/platforms/hdpu.c
@@ -659,8 +659,7 @@ static void __init hdpu_map_io(void)
 char hdpu_smp0[] = "SMP Cpu #0";
 char hdpu_smp1[] = "SMP Cpu #1";
 
-static irqreturn_t hdpu_smp_cpu0_int_handler(int irq, void *dev_id,
-                                             struct pt_regs *regs)
+static irqreturn_t hdpu_smp_cpu0_int_handler(int irq, void *dev_id)
 {
         volatile unsigned int doorbell;
 
@@ -670,22 +669,21 @@ static irqreturn_t hdpu_smp_cpu0_int_handler(int irq, void *dev_id,
         mv64x60_write(&bh, MV64360_CPU0_DOORBELL_CLR, doorbell);
 
         if (doorbell & 1) {
-                smp_message_recv(0, regs);
+                smp_message_recv(0);
         }
         if (doorbell & 2) {
-                smp_message_recv(1, regs);
+                smp_message_recv(1);
         }
         if (doorbell & 4) {
-                smp_message_recv(2, regs);
+                smp_message_recv(2);
         }
         if (doorbell & 8) {
-                smp_message_recv(3, regs);
+                smp_message_recv(3);
         }
         return IRQ_HANDLED;
 }
 
-static irqreturn_t hdpu_smp_cpu1_int_handler(int irq, void *dev_id,
-                                             struct pt_regs *regs)
+static irqreturn_t hdpu_smp_cpu1_int_handler(int irq, void *dev_id)
 {
         volatile unsigned int doorbell;
 
@@ -695,16 +693,16 @@ static irqreturn_t hdpu_smp_cpu1_int_handler(int irq, void *dev_id,
         mv64x60_write(&bh, MV64360_CPU1_DOORBELL_CLR, doorbell);
 
         if (doorbell & 1) {
-                smp_message_recv(0, regs);
+                smp_message_recv(0);
         }
         if (doorbell & 2) {
-                smp_message_recv(1, regs);
+                smp_message_recv(1);
         }
         if (doorbell & 4) {
-                smp_message_recv(2, regs);
+                smp_message_recv(2);
         }
         if (doorbell & 8) {
-                smp_message_recv(3, regs);
+                smp_message_recv(3);
         }
         return IRQ_HANDLED;
 }
diff --git a/arch/ppc/platforms/radstone_ppc7d.c b/arch/ppc/platforms/radstone_ppc7d.c
index 3bb530af0297..13d70ab50bf1 100644
--- a/arch/ppc/platforms/radstone_ppc7d.c
+++ b/arch/ppc/platforms/radstone_ppc7d.c
@@ -451,11 +451,11 @@ static void __init ppc7d_calibrate_decr(void)
  * Interrupt stuff
  *****************************************************************************/
 
-static irqreturn_t ppc7d_i8259_intr(int irq, void *dev_id, struct pt_regs *regs)
+static irqreturn_t ppc7d_i8259_intr(int irq, void *dev_id)
 {
         u32 temp = mv64x60_read(&bh, MV64x60_GPP_INTR_CAUSE);
         if (temp & (1 << 28)) {
-                i8259_irq(regs);
+                i8259_irq();
                 mv64x60_write(&bh, MV64x60_GPP_INTR_CAUSE, temp & (~(1 << 28)));
                 return IRQ_HANDLED;
         }
@@ -536,13 +536,13 @@ static u32 ppc7d_irq_canonicalize(u32 irq)
         return irq;
 }
 
-static int ppc7d_get_irq(struct pt_regs *regs)
+static int ppc7d_get_irq(void)
 {
         int irq;
 
-        irq = mv64360_get_irq(regs);
+        irq = mv64360_get_irq();
         if (irq == (mv64360_irq_base + MV64x60_IRQ_GPP28))
-                irq = i8259_irq(regs);
+                irq = i8259_irq();
         return irq;
 }
 
diff --git a/arch/ppc/platforms/sbc82xx.c b/arch/ppc/platforms/sbc82xx.c
index 60b769c7f3fc..cc0935ccab7a 100644
--- a/arch/ppc/platforms/sbc82xx.c
+++ b/arch/ppc/platforms/sbc82xx.c
@@ -121,7 +121,7 @@ struct hw_interrupt_type sbc82xx_i8259_ic = {
         .end = sbc82xx_i8259_end_irq,
 };
 
-static irqreturn_t sbc82xx_i8259_demux(int irq, void *dev_id, struct pt_regs *regs)
+static irqreturn_t sbc82xx_i8259_demux(int irq, void *dev_id)
 {
         spin_lock(&sbc82xx_i8259_lock);
 
@@ -139,7 +139,7 @@ static irqreturn_t sbc82xx_i8259_demux(int irq, void *dev_id, struct pt_regs *re
                         return IRQ_HANDLED;
                 }
         }
-        __do_IRQ(NR_SIU_INTS + irq, regs);
+        __do_IRQ(NR_SIU_INTS + irq);
         return IRQ_HANDLED;
 }
 
diff --git a/arch/ppc/syslib/cpc700.h b/arch/ppc/syslib/cpc700.h
index 0a8a5d84390f..987e9aa0dd45 100644
--- a/arch/ppc/syslib/cpc700.h
+++ b/arch/ppc/syslib/cpc700.h
@@ -91,6 +91,6 @@ extern struct hw_interrupt_type cpc700_pic;
 extern unsigned int cpc700_irq_assigns[32][2];
 
 extern void __init cpc700_init_IRQ(void);
-extern int cpc700_get_irq(struct pt_regs *);
+extern int cpc700_get_irq(void);
 
 #endif  /* __PPC_SYSLIB_CPC700_H__ */
diff --git a/arch/ppc/syslib/cpc700_pic.c b/arch/ppc/syslib/cpc700_pic.c
index 172aa215fdb0..d48e8f45c050 100644
--- a/arch/ppc/syslib/cpc700_pic.c
+++ b/arch/ppc/syslib/cpc700_pic.c
@@ -158,7 +158,7 @@ cpc700_init_IRQ(void)
  * Find the highest IRQ that generating an interrupt, if any.
  */
 int
-cpc700_get_irq(struct pt_regs *regs)
+cpc700_get_irq(void)
 {
         int irq = 0;
         u_int irq_status, irq_test = 1;
diff --git a/arch/ppc/syslib/cpm2_pic.c b/arch/ppc/syslib/cpm2_pic.c
index c0fee0beb815..fb2d5842641a 100644
--- a/arch/ppc/syslib/cpm2_pic.c
+++ b/arch/ppc/syslib/cpm2_pic.c
@@ -123,7 +123,7 @@ static struct hw_interrupt_type cpm2_pic = {
         .end = cpm2_end_irq,
 };
 
-int cpm2_get_irq(struct pt_regs *regs)
+int cpm2_get_irq(void)
 {
         int irq;
         unsigned long bits;
diff --git a/arch/ppc/syslib/cpm2_pic.h b/arch/ppc/syslib/cpm2_pic.h
index 97cab8f13a1a..467339337a78 100644
--- a/arch/ppc/syslib/cpm2_pic.h
+++ b/arch/ppc/syslib/cpm2_pic.h
@@ -1,7 +1,7 @@
 #ifndef _PPC_KERNEL_CPM2_H
 #define _PPC_KERNEL_CPM2_H
 
-extern int cpm2_get_irq(struct pt_regs *regs);
+extern int cpm2_get_irq(void);
 
 extern void cpm2_init_IRQ(void);
 
diff --git a/arch/ppc/syslib/gt64260_pic.c b/arch/ppc/syslib/gt64260_pic.c
index 7fd550a7d586..e84d432c0657 100644
--- a/arch/ppc/syslib/gt64260_pic.c
+++ b/arch/ppc/syslib/gt64260_pic.c
@@ -110,9 +110,6 @@ gt64260_init_irq(void)
  *  This function returns the lowest interrupt number of all interrupts that
  *  are currently asserted.
  *
- * Input Variable(s):
- *  struct pt_regs*     not used
- *
  * Output Variable(s):
  *  None.
  *
@@ -120,7 +117,7 @@ gt64260_init_irq(void)
  *  int <interrupt number> or -2 (bogus interrupt)
  */
 int
-gt64260_get_irq(struct pt_regs *regs)
+gt64260_get_irq(void)
 {
         int irq;
         int irq_gpp;
@@ -229,7 +226,7 @@ gt64260_mask_irq(unsigned int irq)
 }
 
 static irqreturn_t
-gt64260_cpu_error_int_handler(int irq, void *dev_id, struct pt_regs *regs)
+gt64260_cpu_error_int_handler(int irq, void *dev_id)
 {
         printk(KERN_ERR "gt64260_cpu_error_int_handler: %s 0x%08x\n",
                 "Error on CPU interface - Cause regiser",
@@ -250,7 +247,7 @@ gt64260_cpu_error_int_handler(int irq, void *dev_id, struct pt_regs *regs)
 }
 
 static irqreturn_t
-gt64260_pci_error_int_handler(int irq, void *dev_id, struct pt_regs *regs)
+gt64260_pci_error_int_handler(int irq, void *dev_id)
 {
         u32 val;
         unsigned int pci_bus = (unsigned int)dev_id;
diff --git a/arch/ppc/syslib/i8259.c b/arch/ppc/syslib/i8259.c
index eb35353af837..a43dda5a8334 100644
--- a/arch/ppc/syslib/i8259.c
+++ b/arch/ppc/syslib/i8259.c
@@ -28,7 +28,7 @@ static int i8259_pic_irq_offset;
  * which is called.  It should be noted that polling is broken on some
  * IBM and Motorola PReP boxes so we must use the int-ack feature on them.
  */
-int i8259_irq(struct pt_regs *regs)
+int i8259_irq(void)
 {
         int irq;
 
diff --git a/arch/ppc/syslib/ibm440gx_common.c b/arch/ppc/syslib/ibm440gx_common.c
index 4b77e6c8c87f..6ad52f4a26e1 100644
--- a/arch/ppc/syslib/ibm440gx_common.c
+++ b/arch/ppc/syslib/ibm440gx_common.c
@@ -119,7 +119,7 @@ static inline u32 l2c_diag(u32 addr)
         return mfdcr(DCRN_L2C0_DATA);
 }
 
-static irqreturn_t l2c_error_handler(int irq, void* dev, struct pt_regs* regs)
+static irqreturn_t l2c_error_handler(int irq, void* dev)
 {
         u32 sr = mfdcr(DCRN_L2C0_SR);
         if (sr & L2C_SR_CPE){
diff --git a/arch/ppc/syslib/ipic.c b/arch/ppc/syslib/ipic.c
index 46801f5ec03f..10659c24b1be 100644
--- a/arch/ppc/syslib/ipic.c
+++ b/arch/ppc/syslib/ipic.c
@@ -601,7 +601,7 @@ void ipic_clear_mcp_status(u32 mask)
 }
 
 /* Return an interrupt vector or -1 if no interrupt is pending. */
-int ipic_get_irq(struct pt_regs *regs)
+int ipic_get_irq(void)
 {
         int irq;
 
diff --git a/arch/ppc/syslib/m82xx_pci.c b/arch/ppc/syslib/m82xx_pci.c
index d3fa264e179e..e3b586b1ede9 100644
--- a/arch/ppc/syslib/m82xx_pci.c
+++ b/arch/ppc/syslib/m82xx_pci.c
@@ -117,7 +117,7 @@ struct hw_interrupt_type pq2pci_ic = {
 };
 
 static irqreturn_t
-pq2pci_irq_demux(int irq, void *dev_id, struct pt_regs *regs)
+pq2pci_irq_demux(int irq, void *dev_id)
 {
         unsigned long stat, mask, pend;
         int bit;
@@ -130,7 +130,7 @@ pq2pci_irq_demux(int irq, void *dev_id, struct pt_regs *regs)
                         break;
                 for (bit = 0; pend != 0; ++bit, pend <<= 1) {
                         if (pend & 0x80000000)
-                                __do_IRQ(NR_CPM_INTS + bit, regs);
+                                __do_IRQ(NR_CPM_INTS + bit);
                 }
         }
 
diff --git a/arch/ppc/syslib/m8xx_setup.c b/arch/ppc/syslib/m8xx_setup.c
index 54303a7b4e69..d8d299bd1a12 100644
--- a/arch/ppc/syslib/m8xx_setup.c
+++ b/arch/ppc/syslib/m8xx_setup.c
@@ -169,7 +169,7 @@ abort(void)
 }
 
 /* A place holder for time base interrupts, if they are ever enabled. */
-irqreturn_t timebase_interrupt(int irq, void * dev, struct pt_regs * regs)
+irqreturn_t timebase_interrupt(int irq, void * dev)
 {
         printk ("timebase_interrupt()\n");
 
diff --git a/arch/ppc/syslib/m8xx_wdt.c b/arch/ppc/syslib/m8xx_wdt.c
index ac11d7bab443..fffac8cbeb51 100644
--- a/arch/ppc/syslib/m8xx_wdt.c
+++ b/arch/ppc/syslib/m8xx_wdt.c
@@ -21,7 +21,7 @@
 static int wdt_timeout;
 int m8xx_has_internal_rtc = 0;
 
-static irqreturn_t m8xx_wdt_interrupt(int, void *, struct pt_regs *);
+static irqreturn_t m8xx_wdt_interrupt(int, void *);
 static struct irqaction m8xx_wdt_irqaction = {
         .handler = m8xx_wdt_interrupt,
         .name = "watchdog",
@@ -35,7 +35,7 @@ void m8xx_wdt_reset(void)
         out_be16(&imap->im_siu_conf.sc_swsr, 0xaa39);   /* write magic2 */
 }
 
-static irqreturn_t m8xx_wdt_interrupt(int irq, void *dev, struct pt_regs *regs)
+static irqreturn_t m8xx_wdt_interrupt(int irq, void *dev)
 {
         volatile immap_t *imap = (volatile immap_t *)IMAP_ADDR;
 
diff --git a/arch/ppc/syslib/mpc52xx_pic.c b/arch/ppc/syslib/mpc52xx_pic.c
index 6425b5cee7db..af35a316544a 100644
--- a/arch/ppc/syslib/mpc52xx_pic.c
+++ b/arch/ppc/syslib/mpc52xx_pic.c
@@ -220,7 +220,7 @@ mpc52xx_init_irq(void)
 }
 
 int
-mpc52xx_get_irq(struct pt_regs *regs)
+mpc52xx_get_irq(void)
 {
         u32 status;
         int irq = -1;
diff --git a/arch/ppc/syslib/mv64360_pic.c b/arch/ppc/syslib/mv64360_pic.c
index 3f6d162f87cf..4b7a3338e122 100644
--- a/arch/ppc/syslib/mv64360_pic.c
+++ b/arch/ppc/syslib/mv64360_pic.c
@@ -55,10 +55,9 @@
 
 static void mv64360_unmask_irq(unsigned int);
 static void mv64360_mask_irq(unsigned int);
-static irqreturn_t mv64360_cpu_error_int_handler(int, void *, struct pt_regs *);
-static irqreturn_t mv64360_sram_error_int_handler(int, void *,
-                                                  struct pt_regs *);
-static irqreturn_t mv64360_pci_error_int_handler(int, void *, struct pt_regs *);
+static irqreturn_t mv64360_cpu_error_int_handler(int, void *);
+static irqreturn_t mv64360_sram_error_int_handler(int, void *);
+static irqreturn_t mv64360_pci_error_int_handler(int, void *);
 
 /* ========================== local declarations =========================== */
 
@@ -131,9 +130,6 @@ mv64360_init_irq(void)
  * This function returns the lowest interrupt number of all interrupts that
  * are currently asserted.
  *
- * Input Variable(s):
- *  struct pt_regs*     not used
- *
  * Output Variable(s):
  *  None.
  *
@@ -142,7 +138,7 @@ mv64360_init_irq(void)
  *
  */
 int
-mv64360_get_irq(struct pt_regs *regs)
+mv64360_get_irq(void)
 {
         int irq;
         int irq_gpp;
@@ -283,7 +279,7 @@ mv64360_mask_irq(unsigned int irq)
 }
 
 static irqreturn_t
-mv64360_cpu_error_int_handler(int irq, void *dev_id, struct pt_regs *regs)
+mv64360_cpu_error_int_handler(int irq, void *dev_id)
 {
         printk(KERN_ERR "mv64360_cpu_error_int_handler: %s 0x%08x\n",
                 "Error on CPU interface - Cause regiser",
@@ -304,7 +300,7 @@ mv64360_cpu_error_int_handler(int irq, void *dev_id, struct pt_regs *regs)
 }
 
 static irqreturn_t
-mv64360_sram_error_int_handler(int irq, void *dev_id, struct pt_regs *regs)
+mv64360_sram_error_int_handler(int irq, void *dev_id)
 {
         printk(KERN_ERR "mv64360_sram_error_int_handler: %s 0x%08x\n",
                 "Error in internal SRAM - Cause register",
@@ -325,7 +321,7 @@ mv64360_sram_error_int_handler(int irq, void *dev_id, struct pt_regs *regs)
 }
 
 static irqreturn_t
-mv64360_pci_error_int_handler(int irq, void *dev_id, struct pt_regs *regs)
+mv64360_pci_error_int_handler(int irq, void *dev_id)
 {
         u32 val;
         unsigned int pci_bus = (unsigned int)dev_id;
@@ -380,7 +376,7 @@ mv64360_register_hdlrs(void)
         /* Clear old errors and register CPU interface error intr handler */
         mv64x60_write(&bh, MV64x60_CPU_ERR_CAUSE, 0);
         if ((rc = request_irq(MV64x60_IRQ_CPU_ERR + mv64360_irq_base,
-                mv64360_cpu_error_int_handler, IRQF_DISABLED, CPU_INTR_STR, 0)))
+                mv64360_cpu_error_int_handler, IRQF_DISABLED, CPU_INTR_STR, NULL)))
                 printk(KERN_WARNING "Can't register cpu error handler: %d", rc);
 
         mv64x60_write(&bh, MV64x60_CPU_ERR_MASK, 0);
@@ -389,7 +385,7 @@ mv64360_register_hdlrs(void)
         /* Clear old errors and register internal SRAM error intr handler */
         mv64x60_write(&bh, MV64360_SRAM_ERR_CAUSE, 0);
         if ((rc = request_irq(MV64360_IRQ_SRAM_PAR_ERR + mv64360_irq_base,
-                mv64360_sram_error_int_handler,IRQF_DISABLED,SRAM_INTR_STR, 0)))
+                mv64360_sram_error_int_handler,IRQF_DISABLED,SRAM_INTR_STR, NULL)))
                 printk(KERN_WARNING "Can't register SRAM error handler: %d",rc);
 
         /* Clear old errors and register PCI 0 error intr handler */
diff --git a/arch/ppc/syslib/open_pic.c b/arch/ppc/syslib/open_pic.c
index aa0b95788705..18ec94733293 100644
--- a/arch/ppc/syslib/open_pic.c
+++ b/arch/ppc/syslib/open_pic.c
@@ -45,7 +45,7 @@ static u_int NumSources;
 static int open_pic_irq_offset;
 static volatile OpenPIC_Source __iomem *ISR[NR_IRQS];
 static int openpic_cascade_irq = -1;
-static int (*openpic_cascade_fn)(struct pt_regs *);
+static int (*openpic_cascade_fn)(void);
 
 /* Global Operations */
 static void openpic_disable_8259_pass_through(void);
@@ -54,7 +54,7 @@ static void openpic_set_spurious(u_int vector);
 #ifdef CONFIG_SMP
 /* Interprocessor Interrupts */
 static void openpic_initipi(u_int ipi, u_int pri, u_int vector);
-static irqreturn_t openpic_ipi_action(int cpl, void *dev_id, struct pt_regs *);
+static irqreturn_t openpic_ipi_action(int cpl, void *dev_id);
 #endif
 
 /* Timer Interrupts */
@@ -700,7 +700,7 @@ static struct irqaction openpic_cascade_irqaction = {
 
 void __init
 openpic_hookup_cascade(u_int irq, char *name,
-        int (*cascade_fn)(struct pt_regs *))
+        int (*cascade_fn)(void))
 {
         openpic_cascade_irq = irq;
         openpic_cascade_fn = cascade_fn;
@@ -857,16 +857,16 @@ static void openpic_end_ipi(unsigned int irq_nr)
 {
 }
 
-static irqreturn_t openpic_ipi_action(int cpl, void *dev_id, struct pt_regs *regs)
+static irqreturn_t openpic_ipi_action(int cpl, void *dev_id)
 {
-        smp_message_recv(cpl-OPENPIC_VEC_IPI-open_pic_irq_offset, regs);
+        smp_message_recv(cpl-OPENPIC_VEC_IPI-open_pic_irq_offset);
         return IRQ_HANDLED;
 }
 
 #endif /* CONFIG_SMP */
 
 int
-openpic_get_irq(struct pt_regs *regs)
+openpic_get_irq(void)
 {
         int irq = openpic_irq();
 
@@ -876,7 +876,7 @@ openpic_get_irq(struct pt_regs *regs)
          * This should move to irq.c eventually.  -- paulus
          */
         if (irq == openpic_cascade_irq && openpic_cascade_fn != NULL) {
-                int cirq = openpic_cascade_fn(regs);
+                int cirq = openpic_cascade_fn();
 
                 /* Allow for the cascade being shared with other devices */
                 if (cirq != -1) {
diff --git a/arch/ppc/syslib/open_pic2.c b/arch/ppc/syslib/open_pic2.c
index e1ff971539ea..d585207f9f77 100644
--- a/arch/ppc/syslib/open_pic2.c
+++ b/arch/ppc/syslib/open_pic2.c
@@ -529,7 +529,7 @@ static void openpic2_end_irq(unsigned int irq_nr)
 }
 
 int
-openpic2_get_irq(struct pt_regs *regs)
+openpic2_get_irq(void)
 {
         int irq = openpic2_irq();
 
diff --git a/arch/ppc/syslib/ppc403_pic.c b/arch/ppc/syslib/ppc403_pic.c
index 1584c8b1229f..607ebd111d44 100644
--- a/arch/ppc/syslib/ppc403_pic.c
+++ b/arch/ppc/syslib/ppc403_pic.c
@@ -42,7 +42,7 @@ static struct hw_interrupt_type ppc403_aic = {
 };
 
 int
-ppc403_pic_get_irq(struct pt_regs *regs)
+ppc403_pic_get_irq(void)
 {
         int irq;
         unsigned long bits;
diff --git a/arch/ppc/syslib/ppc4xx_pic.c b/arch/ppc/syslib/ppc4xx_pic.c
index 745685df5984..ee0da4b4b993 100644
--- a/arch/ppc/syslib/ppc4xx_pic.c
+++ b/arch/ppc/syslib/ppc4xx_pic.c
@@ -96,7 +96,7 @@ UIC_HANDLERS(1);
 UIC_HANDLERS(2);
 UIC_HANDLERS(3);
 
-static int ppc4xx_pic_get_irq(struct pt_regs *regs)
+static int ppc4xx_pic_get_irq(void)
 {
         u32 uic0 = mfdcr(DCRN_UIC_MSR(UIC0));
         if (uic0 & UIC0_UIC1NC)
@@ -125,7 +125,7 @@ UIC_HANDLERS(0);
 UIC_HANDLERS(1);
 UIC_HANDLERS(2);
 
-static int ppc4xx_pic_get_irq(struct pt_regs *regs)
+static int ppc4xx_pic_get_irq(void)
 {
         u32 uicb = mfdcr(DCRN_UIC_MSR(UICB));
         if (uicb & UICB_UIC0NC)
@@ -158,7 +158,7 @@ static void __init ppc4xx_pic_impl_init(void)
 UIC_HANDLERS(0);
 UIC_HANDLERS(1);
 
-static int ppc4xx_pic_get_irq(struct pt_regs *regs)
+static int ppc4xx_pic_get_irq(void)
 {
         u32 uic0 = mfdcr(DCRN_UIC_MSR(UIC0));
         if (uic0 & UIC0_UIC1NC)
@@ -179,7 +179,7 @@ static void __init ppc4xx_pic_impl_init(void)
 #define ACK_UIC0_PARENT
 UIC_HANDLERS(0);
 
-static int ppc4xx_pic_get_irq(struct pt_regs *regs)
+static int ppc4xx_pic_get_irq(void)
 {
         u32 uic0 = mfdcr(DCRN_UIC_MSR(UIC0));
         return uic0 ? 32 - ffs(uic0) : -1;
diff --git a/arch/ppc/syslib/ppc85xx_rio.c b/arch/ppc/syslib/ppc85xx_rio.c
index d9b471b4d695..05b0e9415085 100644
--- a/arch/ppc/syslib/ppc85xx_rio.c
+++ b/arch/ppc/syslib/ppc85xx_rio.c
@@ -349,13 +349,12 @@ EXPORT_SYMBOL_GPL(rio_hw_add_outb_message);
  * mpc85xx_rio_tx_handler - MPC85xx outbound message interrupt handler
  * @irq: Linux interrupt number
  * @dev_instance: Pointer to interrupt-specific data
- * @regs: Register context
  *
  * Handles outbound message interrupts. Executes a register outbound
  * mailbox event handler and acks the interrupt occurence.
  */
 static irqreturn_t
-mpc85xx_rio_tx_handler(int irq, void *dev_instance, struct pt_regs *regs)
+mpc85xx_rio_tx_handler(int irq, void *dev_instance)
 {
         int osr;
         struct rio_mport *port = (struct rio_mport *)dev_instance;
@@ -517,13 +516,12 @@ void rio_close_outb_mbox(struct rio_mport *mport, int mbox)
  * mpc85xx_rio_rx_handler - MPC85xx inbound message interrupt handler
  * @irq: Linux interrupt number
  * @dev_instance: Pointer to interrupt-specific data
- * @regs: Register context
  *
  * Handles inbound message interrupts. Executes a registered inbound
  * mailbox event handler and acks the interrupt occurence.
  */
 static irqreturn_t
-mpc85xx_rio_rx_handler(int irq, void *dev_instance, struct pt_regs *regs)
+mpc85xx_rio_rx_handler(int irq, void *dev_instance)
 {
         int isr;
         struct rio_mport *port = (struct rio_mport *)dev_instance;
@@ -736,13 +734,12 @@ EXPORT_SYMBOL_GPL(rio_hw_get_inb_message);
  * mpc85xx_rio_dbell_handler - MPC85xx doorbell interrupt handler
  * @irq: Linux interrupt number
  * @dev_instance: Pointer to interrupt-specific data
- * @regs: Register context
  *
  * Handles doorbell interrupts. Parses a list of registered
  * doorbell event handlers and executes a matching event handler.
  */
 static irqreturn_t
-mpc85xx_rio_dbell_handler(int irq, void *dev_instance, struct pt_regs *regs)
+mpc85xx_rio_dbell_handler(int irq, void *dev_instance)
 {
         int dsr;
         struct rio_mport *port = (struct rio_mport *)dev_instance;
diff --git a/arch/ppc/syslib/ppc8xx_pic.c b/arch/ppc/syslib/ppc8xx_pic.c
index d6c25fe25011..e8619c750732 100644
--- a/arch/ppc/syslib/ppc8xx_pic.c
+++ b/arch/ppc/syslib/ppc8xx_pic.c
@@ -10,7 +10,7 @@
 #include <asm/mpc8xx.h>
 #include "ppc8xx_pic.h"
 
-extern int cpm_get_irq(struct pt_regs *regs);
+extern int cpm_get_irq(void);
 
 /* The 8xx internal interrupt controller.  It is usually
  * the only interrupt controller.  Some boards, like the MBX and
@@ -96,7 +96,7 @@ m8xx_get_irq(struct pt_regs *regs)
          * get back SIU_LEVEL7.  In this case, return -1
          */
         if (irq == CPM_INTERRUPT)
-                irq = CPM_IRQ_OFFSET + cpm_get_irq(regs);
+                irq = CPM_IRQ_OFFSET + cpm_get_irq();
 #if defined(CONFIG_PCI)
         else if (irq == ISA_BRIDGE_INT) {
                 int isa_irq;
diff --git a/arch/ppc/syslib/xilinx_pic.c b/arch/ppc/syslib/xilinx_pic.c
index 39a93dc6375b..6fd4cdbada72 100644
--- a/arch/ppc/syslib/xilinx_pic.c
+++ b/arch/ppc/syslib/xilinx_pic.c
@@ -86,7 +86,7 @@ static struct hw_interrupt_type xilinx_intc = {
 };
 
 int
-xilinx_pic_get_irq(struct pt_regs *regs)
+xilinx_pic_get_irq(void)
 {
         int irq;
 
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index 51c2dfe89c62..608193cfe43f 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -30,6 +30,9 @@ config GENERIC_CALIBRATE_DELAY
         bool
         default y
 
+config GENERIC_TIME
+        def_bool y
+
 config GENERIC_BUST_SPINLOCK
         bool
 
diff --git a/arch/s390/defconfig b/arch/s390/defconfig
index b6cad75fd1f4..a3257398ea8d 100644
--- a/arch/s390/defconfig
+++ b/arch/s390/defconfig
@@ -9,6 +9,7 @@ CONFIG_STACKTRACE_SUPPORT=y
 CONFIG_RWSEM_XCHGADD_ALGORITHM=y
 CONFIG_GENERIC_HWEIGHT=y
 CONFIG_GENERIC_CALIBRATE_DELAY=y
+CONFIG_GENERIC_TIME=y
 CONFIG_S390=y
 CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
 
diff --git a/arch/s390/kernel/s390_ext.c b/arch/s390/kernel/s390_ext.c
index c1b383537fec..c49ab8c784d2 100644
--- a/arch/s390/kernel/s390_ext.c
+++ b/arch/s390/kernel/s390_ext.c
@@ -16,6 +16,7 @@
 
 #include <asm/lowcore.h>
 #include <asm/s390_ext.h>
+#include <asm/irq_regs.h>
 #include <asm/irq.h>
 
 /*
@@ -114,26 +115,28 @@ void do_extint(struct pt_regs *regs, unsigned short code)
 {
         ext_int_info_t *p;
         int index;
+        struct pt_regs *old_regs;
 
         irq_enter();
+        old_regs = set_irq_regs(regs);
         asm volatile ("mc 0,0");
         if (S390_lowcore.int_clock >= S390_lowcore.jiffy_timer)
                 /**
                  * Make sure that the i/o interrupt did not "overtake"
                  * the last HZ timer interrupt.
                  */
-                account_ticks(regs);
+                account_ticks();
         kstat_cpu(smp_processor_id()).irqs[EXTERNAL_INTERRUPT]++;
         index = ext_hash(code);
         for (p = ext_int_hash[index]; p; p = p->next) {
                 if (likely(p->code == code)) {
                         if (likely(p->handler))
-                                p->handler(regs, code);
+                                p->handler(code);
                 }
         }
+        set_irq_regs(old_regs);
         irq_exit();
 }
 
 EXPORT_SYMBOL(register_external_interrupt);
 EXPORT_SYMBOL(unregister_external_interrupt);
-
diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c
index a8e6199755d4..62822245f9be 100644
--- a/arch/s390/kernel/smp.c
+++ b/arch/s390/kernel/smp.c
@@ -339,7 +339,7 @@ void machine_power_off_smp(void)
  * cpus are handled.
  */
 
-void do_ext_call_interrupt(struct pt_regs *regs, __u16 code)
+void do_ext_call_interrupt(__u16 code)
 {
         unsigned long bits;
 
diff --git a/arch/s390/kernel/time.c b/arch/s390/kernel/time.c
index 4bf66cc4a267..6cceed4df73e 100644
--- a/arch/s390/kernel/time.c
+++ b/arch/s390/kernel/time.c
@@ -28,12 +28,14 @@
 #include <linux/profile.h>
 #include <linux/timex.h>
 #include <linux/notifier.h>
+#include <linux/clocksource.h>
 
 #include <asm/uaccess.h>
 #include <asm/delay.h>
 #include <asm/s390_ext.h>
 #include <asm/div64.h>
 #include <asm/irq.h>
+#include <asm/irq_regs.h>
 #include <asm/timer.h>
 
 /* change this if you have some constant time drift */
@@ -81,78 +83,10 @@ void tod_to_timeval(__u64 todval, struct timespec *xtime)
         xtime->tv_nsec = ((todval * 1000) >> 12);
 }
 
-static inline unsigned long do_gettimeoffset(void) 
-{
-        __u64 now;
-
-        now = (get_clock() - jiffies_timer_cc) >> 12;
-        now -= (__u64) jiffies * USECS_PER_JIFFY;
-        return (unsigned long) now;
-}
-
-/*
- * This version of gettimeofday has microsecond resolution.
- */
-void do_gettimeofday(struct timeval *tv)
-{
-        unsigned long flags;
-        unsigned long seq;
-        unsigned long usec, sec;
-
-        do {
-                seq = read_seqbegin_irqsave(&xtime_lock, flags);
-
-                sec = xtime.tv_sec;
-                usec = xtime.tv_nsec / 1000 + do_gettimeoffset();
-        } while (read_seqretry_irqrestore(&xtime_lock, seq, flags));
-
-        while (usec >= 1000000) {
-                usec -= 1000000;
-                sec++;
-        }
-
-        tv->tv_sec = sec;
-        tv->tv_usec = usec;
-}
-
-EXPORT_SYMBOL(do_gettimeofday);
-
-int do_settimeofday(struct timespec *tv)
-{
-        time_t wtm_sec, sec = tv->tv_sec;
-        long wtm_nsec, nsec = tv->tv_nsec;
-
-        if ((unsigned long)tv->tv_nsec >= NSEC_PER_SEC)
-                return -EINVAL;
-
-        write_seqlock_irq(&xtime_lock);
-        /* This is revolting. We need to set the xtime.tv_nsec
-         * correctly. However, the value in this location is
-         * is value at the last tick.
-         * Discover what correction gettimeofday
-         * would have done, and then undo it!
-         */
-        nsec -= do_gettimeoffset() * 1000;
-
-        wtm_sec  = wall_to_monotonic.tv_sec + (xtime.tv_sec - sec);
-        wtm_nsec = wall_to_monotonic.tv_nsec + (xtime.tv_nsec - nsec);
-
-        set_normalized_timespec(&xtime, sec, nsec);
-        set_normalized_timespec(&wall_to_monotonic, wtm_sec, wtm_nsec);
-
-        ntp_clear();
-        write_sequnlock_irq(&xtime_lock);
-        clock_was_set();
-        return 0;
-}
-
-EXPORT_SYMBOL(do_settimeofday);
-
-
 #ifdef CONFIG_PROFILING
-#define s390_do_profile(regs)   profile_tick(CPU_PROFILING, regs)
+#define s390_do_profile()       profile_tick(CPU_PROFILING)
 #else
-#define s390_do_profile(regs)  do { ; } while(0)
+#define s390_do_profile()       do { ; } while(0)
 #endif /* CONFIG_PROFILING */
 
 
@@ -160,7 +94,7 @@ EXPORT_SYMBOL(do_settimeofday);
  * timer_interrupt() needs to keep up the real-time clock,
  * as well as call the "do_timer()" routine every clocktick
  */
-void account_ticks(struct pt_regs *regs)
+void account_ticks(void)
 {
         __u64 tmp;
         __u32 ticks;
@@ -221,10 +155,10 @@ void account_ticks(struct pt_regs *regs)
         account_tick_vtime(current);
 #else
         while (ticks--)
-                update_process_times(user_mode(regs));
+                update_process_times(user_mode(get_irq_regs()));
 #endif
 
-        s390_do_profile(regs);
+        s390_do_profile();
 }
 
 #ifdef CONFIG_NO_IDLE_HZ
@@ -285,9 +219,11 @@ static inline void stop_hz_timer(void)
  */
 static inline void start_hz_timer(void)
 {
+        BUG_ON(!in_interrupt());
+
         if (!cpu_isset(smp_processor_id(), nohz_cpu_mask))
                 return;
-        account_ticks(task_pt_regs(current));
+        account_ticks();
         cpu_clear(smp_processor_id(), nohz_cpu_mask);
 }
 
@@ -337,6 +273,22 @@ void init_cpu_timer(void)
 
 extern void vtime_init(void);
 
+static cycle_t read_tod_clock(void)
+{
+        return get_clock();
+}
+
+static struct clocksource clocksource_tod = {
+        .name           = "tod",
+        .rating         = 100,
+        .read           = read_tod_clock,
+        .mask           = -1ULL,
+        .mult           = 1000,
+        .shift          = 12,
+        .is_continuous  = 1,
+};
+
+
 /*
  * Initialize the TOD clock and the CPU timer of
  * the boot cpu.
@@ -381,6 +333,9 @@ void __init time_init(void)
                                               &ext_int_info_cc) != 0)
                 panic("Couldn't request external interrupt 0x1004");
 
+        if (clocksource_register(&clocksource_tod) != 0)
+                panic("Could not register TOD clock source");
+
         init_cpu_timer();
 
 #ifdef CONFIG_NO_IDLE_HZ
diff --git a/arch/s390/kernel/traps.c b/arch/s390/kernel/traps.c
index 3eb4fab048b8..66375a5e3d12 100644
--- a/arch/s390/kernel/traps.c
+++ b/arch/s390/kernel/traps.c
@@ -61,7 +61,7 @@ extern pgm_check_handler_t do_dat_exception;
 #ifdef CONFIG_PFAULT
 extern int pfault_init(void);
 extern void pfault_fini(void);
-extern void pfault_interrupt(struct pt_regs *regs, __u16 error_code);
+extern void pfault_interrupt(__u16 error_code);
 static ext_int_info_t ext_int_pfault;
 #endif
 extern pgm_check_handler_t do_monitor_call;
@@ -474,7 +474,7 @@ asmlinkage void illegal_op(struct pt_regs * regs, long interruption_code)
                         signal = math_emu_b3(opcode, regs);
                 } else if (opcode[0] == 0xed) {
                         get_user(*((__u32 *) (opcode+2)),
-                                 (__u32 *)(location+1));
+                                 (__u32 __user *)(location+1));
                         signal = math_emu_ed(opcode, regs);
                 } else if (*((__u16 *) opcode) == 0xb299) {
                         get_user(*((__u16 *) (opcode+2)), location+1);
@@ -499,7 +499,7 @@ asmlinkage void illegal_op(struct pt_regs * regs, long interruption_code)
                 info.si_signo = signal;
                 info.si_errno = 0;
                 info.si_code = SEGV_MAPERR;
-                info.si_addr = (void *) location;
+                info.si_addr = (void __user *) location;
                 do_trap(interruption_code, signal,
                         "user address fault", regs, &info);
         } else
@@ -520,10 +520,10 @@ asmlinkage void
 specification_exception(struct pt_regs * regs, long interruption_code)
 {
         __u8 opcode[6];
-        __u16 *location = NULL;
+        __u16 __user *location = NULL;
         int signal = 0;
 
-        location = (__u16 *) get_check_address(regs);
+        location = (__u16 __user *) get_check_address(regs);
 
         /*
          * We got all needed information from the lowcore and can
@@ -632,7 +632,7 @@ asmlinkage void data_exception(struct pt_regs * regs, long interruption_code)
                         break;
                 case 0xed:
                         get_user(*((__u32 *) (opcode+2)),
-                                 (__u32 *)(location+1));
+                                 (__u32 __user *)(location+1));
                         signal = math_emu_ed(opcode, regs);
                         break;
                 case 0xb2:
diff --git a/arch/s390/kernel/vtime.c b/arch/s390/kernel/vtime.c
index 2306cd83fca1..1d7d3938b2b1 100644
--- a/arch/s390/kernel/vtime.c
+++ b/arch/s390/kernel/vtime.c
@@ -22,6 +22,7 @@
 
 #include <asm/s390_ext.h>
 #include <asm/timer.h>
+#include <asm/irq_regs.h>
 
 static ext_int_info_t ext_int_info_timer;
 DEFINE_PER_CPU(struct vtimer_queue, virt_cpu_timer);
@@ -241,7 +242,7 @@ static void do_callbacks(struct list_head *cb_list, struct pt_regs *regs)
 /*
  * Handler for the virtual CPU timer.
  */
-static void do_cpu_timer_interrupt(struct pt_regs *regs, __u16 error_code)
+static void do_cpu_timer_interrupt(__u16 error_code)
 {
         int cpu;
         __u64 next, delta;
@@ -274,7 +275,7 @@ static void do_cpu_timer_interrupt(struct pt_regs *regs, __u16 error_code)
                 list_move_tail(&event->entry, &cb_list);
         }
         spin_unlock(&vt_list->lock);
-        do_callbacks(&cb_list, regs);
+        do_callbacks(&cb_list, get_irq_regs());
 
         /* next event is first in list */
         spin_lock(&vt_list->lock);
diff --git a/arch/s390/mm/fault.c b/arch/s390/mm/fault.c
index 9c3c19fe62fc..1c323bbfda91 100644
--- a/arch/s390/mm/fault.c
+++ b/arch/s390/mm/fault.c
@@ -451,7 +451,7 @@ void pfault_fini(void)
 }
 
 asmlinkage void
-pfault_interrupt(struct pt_regs *regs, __u16 error_code)
+pfault_interrupt(__u16 error_code)
 {
         struct task_struct *tsk;
         __u16 subcode;
diff --git a/arch/sparc/kernel/irq.c b/arch/sparc/kernel/irq.c
index 72f0201051a0..b3b6680a2a30 100644
--- a/arch/sparc/kernel/irq.c
+++ b/arch/sparc/kernel/irq.c
@@ -46,6 +46,7 @@
 #include <asm/pgtable.h>
 #include <asm/pcic.h>
 #include <asm/cacheflush.h>
+#include <asm/irq_regs.h>
 
 #ifdef CONFIG_SMP
 #define SMP_NOP2 "nop; nop;\n\t"
@@ -133,8 +134,8 @@ static void irq_panic(void)
     prom_halt();
 }
 
-void (*sparc_init_timers)(irqreturn_t (*)(int, void *,struct pt_regs *)) =
-    (void (*)(irqreturn_t (*)(int, void *,struct pt_regs *))) irq_panic;
+void (*sparc_init_timers)(irq_handler_t ) =
+    (void (*)(irq_handler_t )) irq_panic;
 
 /*
  * Dave Redman (djhr@tadpole.co.uk)
@@ -319,12 +320,14 @@ void unexpected_irq(int irq, void *dev_id, struct pt_regs * regs)
 
 void handler_irq(int irq, struct pt_regs * regs)
 {
+        struct pt_regs *old_regs;
         struct irqaction * action;
         int cpu = smp_processor_id();
 #ifdef CONFIG_SMP
         extern void smp4m_irq_rotate(int cpu);
 #endif
 
+        old_regs = set_irq_regs(regs);
         irq_enter();
         disable_pil_irq(irq);
 #ifdef CONFIG_SMP
@@ -338,27 +341,31 @@ void handler_irq(int irq, struct pt_regs * regs)
         do {
                 if (!action || !action->handler)
                         unexpected_irq(irq, NULL, regs);
-                action->handler(irq, action->dev_id, regs);
+                action->handler(irq, action->dev_id);
                 action = action->next;
         } while (action);
         sparc_irq[irq].flags &= ~SPARC_IRQ_INPROGRESS;
         enable_pil_irq(irq);
         irq_exit();
+        set_irq_regs(old_regs);
 }
 
 #ifdef CONFIG_BLK_DEV_FD
-extern void floppy_interrupt(int irq, void *dev_id, struct pt_regs *regs);
+extern void floppy_interrupt(int irq, void *dev_id)
 
 void sparc_floppy_irq(int irq, void *dev_id, struct pt_regs *regs)
 {
+        struct pt_regs *old_regs;
         int cpu = smp_processor_id();
 
+        old_regs = set_irq_regs(regs);
         disable_pil_irq(irq);
         irq_enter();
         kstat_cpu(cpu).irqs[irq]++;
-        floppy_interrupt(irq, dev_id, regs);
+        floppy_interrupt(irq, dev_id);
         irq_exit();
         enable_pil_irq(irq);
+        set_irq_regs(old_regs);
         // XXX Eek, it's totally changed with preempt_count() and such
         // if (softirq_pending(cpu))
         //      do_softirq();
@@ -369,7 +376,7 @@ void sparc_floppy_irq(int irq, void *dev_id, struct pt_regs *regs)
  * thus no sharing possible.
  */
 int request_fast_irq(unsigned int irq,
-                     irqreturn_t (*handler)(int, void *, struct pt_regs *),
+                     irq_handler_t handler,
                      unsigned long irqflags, const char *devname)
 {
         struct irqaction *action;
@@ -468,7 +475,7 @@ out:
 }
 
 int request_irq(unsigned int irq,
-                irqreturn_t (*handler)(int, void *, struct pt_regs *),
+                irq_handler_t handler,
                 unsigned long irqflags, const char * devname, void *dev_id)
 {
         struct irqaction * action, **actionp;
@@ -478,7 +485,7 @@ int request_irq(unsigned int irq,
         
         if (sparc_cpu_model == sun4d) {
                 extern int sun4d_request_irq(unsigned int, 
-                                             irqreturn_t (*)(int, void *, struct pt_regs *),
+                                             irq_handler_t ,
                                              unsigned long, const char *, void *);
                 return sun4d_request_irq(irq, handler, irqflags, devname, dev_id);
         }
diff --git a/arch/sparc/kernel/pcic.c b/arch/sparc/kernel/pcic.c
index edb6cc665f56..b4e50ae323bf 100644
--- a/arch/sparc/kernel/pcic.c
+++ b/arch/sparc/kernel/pcic.c
@@ -708,13 +708,13 @@ static void pcic_clear_clock_irq(void)
         pcic_timer_dummy = readl(pcic0.pcic_regs+PCI_SYS_LIMIT);
 }
 
-static irqreturn_t pcic_timer_handler (int irq, void *h, struct pt_regs *regs)
+static irqreturn_t pcic_timer_handler (int irq, void *h)
 {
         write_seqlock(&xtime_lock);     /* Dummy, to show that we remember */
         pcic_clear_clock_irq();
         do_timer(1);
 #ifndef CONFIG_SMP
-        update_process_times(user_mode(regs));
+        update_process_times(user_mode(get_irq_regs()));
 #endif
         write_sequnlock(&xtime_lock);
         return IRQ_HANDLED;
diff --git a/arch/sparc/kernel/prom.c b/arch/sparc/kernel/prom.c
index 4ca9e5fc97f4..2cc302b6bec0 100644
--- a/arch/sparc/kernel/prom.c
+++ b/arch/sparc/kernel/prom.c
@@ -243,7 +243,7 @@ int of_set_property(struct device_node *dp, const char *name, void *val, int len
                         void *old_val = prop->value;
                         int ret;
 
-                        ret = prom_setprop(dp->node, name, val, len);
+                        ret = prom_setprop(dp->node, (char *) name, val, len);
                         err = -EINVAL;
                         if (ret >= 0) {
                                 prop->value = new_val;
@@ -477,7 +477,10 @@ static struct property * __init build_one_prop(phandle node, char *prev, char *s
                         p->length = 0;
                 } else {
                         p->value = prom_early_alloc(p->length + 1);
-                        prom_getproperty(node, p->name, p->value, p->length);
+                        len = prom_getproperty(node, p->name, p->value,
+                                               p->length);
+                        if (len <= 0)
+                                p->length = 0;
                         ((unsigned char *)p->value)[p->length] = '\0';
                 }
         }
diff --git a/arch/sparc/kernel/sparc_ksyms.c b/arch/sparc/kernel/sparc_ksyms.c
index 4d441a554d35..33dadd9f2871 100644
--- a/arch/sparc/kernel/sparc_ksyms.c
+++ b/arch/sparc/kernel/sparc_ksyms.c
@@ -87,6 +87,7 @@ extern void ___set_bit(void);
 extern void ___clear_bit(void);
 extern void ___change_bit(void);
 extern void ___rw_read_enter(void);
+extern void ___rw_read_try(void);
 extern void ___rw_read_exit(void);
 extern void ___rw_write_enter(void);
 
@@ -104,8 +105,9 @@ extern unsigned _Urem(unsigned, unsigned);
 EXPORT_SYMBOL(sparc_cpu_model);
 EXPORT_SYMBOL(kernel_thread);
 #ifdef CONFIG_SMP
-// XXX find what uses (or used) these.
+// XXX find what uses (or used) these.   AV: see asm/spinlock.h
 EXPORT_SYMBOL(___rw_read_enter);
+EXPORT_SYMBOL(___rw_read_try);
 EXPORT_SYMBOL(___rw_read_exit);
 EXPORT_SYMBOL(___rw_write_enter);
 #endif
diff --git a/arch/sparc/kernel/sun4c_irq.c b/arch/sparc/kernel/sun4c_irq.c
index 4be2c86ea540..009e891a4329 100644
--- a/arch/sparc/kernel/sun4c_irq.c
+++ b/arch/sparc/kernel/sun4c_irq.c
@@ -154,7 +154,7 @@ static void sun4c_load_profile_irq(int cpu, unsigned int limit)
         /* Errm.. not sure how to do this.. */
 }
 
-static void __init sun4c_init_timers(irqreturn_t (*counter_fn)(int, void *, struct pt_regs *))
+static void __init sun4c_init_timers(irq_handler_t counter_fn)
 {
         int irq;
 
diff --git a/arch/sparc/kernel/sun4d_irq.c b/arch/sparc/kernel/sun4d_irq.c
index 74eed9775ac0..d4f9da8170c5 100644
--- a/arch/sparc/kernel/sun4d_irq.c
+++ b/arch/sparc/kernel/sun4d_irq.c
@@ -38,6 +38,7 @@
 #include <asm/sbus.h>
 #include <asm/sbi.h>
 #include <asm/cacheflush.h>
+#include <asm/irq_regs.h>
 
 /* If you trust current SCSI layer to handle different SCSI IRQs, enable this. I don't trust it... -jj */
 /* #define DISTRIBUTE_IRQS */
@@ -198,6 +199,7 @@ extern void unexpected_irq(int, void *, struct pt_regs *);
 
 void sun4d_handler_irq(int irq, struct pt_regs * regs)
 {
+        struct pt_regs *old_regs;
         struct irqaction * action;
         int cpu = smp_processor_id();
         /* SBUS IRQ level (1 - 7) */
@@ -208,6 +210,7 @@ void sun4d_handler_irq(int irq, struct pt_regs * regs)
         
         cc_set_iclr(1 << irq);
         
+        old_regs = set_irq_regs(regs);
         irq_enter();
         kstat_cpu(cpu).irqs[irq]++;
         if (!sbusl) {
@@ -215,7 +218,7 @@ void sun4d_handler_irq(int irq, struct pt_regs * regs)
                 if (!action)
                         unexpected_irq(irq, NULL, regs);
                 do {
-                        action->handler(irq, action->dev_id, regs);
+                        action->handler(irq, action->dev_id);
                         action = action->next;
                 } while (action);
         } else {
@@ -242,7 +245,7 @@ void sun4d_handler_irq(int irq, struct pt_regs * regs)
                                                 if (!action)
                                                         unexpected_irq(irq, NULL, regs);
                                                 do {
-                                                        action->handler(irq, action->dev_id, regs);
+                                                        action->handler(irq, action->dev_id);
                                                         action = action->next;
                                                 } while (action);
                                                 release_sbi(SBI2DEVID(sbino), slot);
@@ -250,6 +253,7 @@ void sun4d_handler_irq(int irq, struct pt_regs * regs)
                         }
         }
         irq_exit();
+        set_irq_regs(old_regs);
 }
 
 unsigned int sun4d_build_irq(struct sbus_dev *sdev, int irq)
@@ -272,7 +276,7 @@ unsigned int sun4d_sbint_to_irq(struct sbus_dev *sdev, unsigned int sbint)
 }
 
 int sun4d_request_irq(unsigned int irq,
-                irqreturn_t (*handler)(int, void *, struct pt_regs *),
+                irq_handler_t handler,
                 unsigned long irqflags, const char * devname, void *dev_id)
 {
         struct irqaction *action, *tmp = NULL, **actionp;
@@ -466,7 +470,7 @@ static void sun4d_load_profile_irq(int cpu, unsigned int limit)
         bw_set_prof_limit(cpu, limit);
 }
 
-static void __init sun4d_init_timers(irqreturn_t (*counter_fn)(int, void *, struct pt_regs *))
+static void __init sun4d_init_timers(irq_handler_t counter_fn)
 {
         int irq;
         int cpu;
diff --git a/arch/sparc/kernel/sun4d_smp.c b/arch/sparc/kernel/sun4d_smp.c
index 3ff4edd32815..c80ea61e8ba0 100644
--- a/arch/sparc/kernel/sun4d_smp.c
+++ b/arch/sparc/kernel/sun4d_smp.c
@@ -23,6 +23,7 @@
 
 #include <asm/ptrace.h>
 #include <asm/atomic.h>
+#include <asm/irq_regs.h>
 
 #include <asm/delay.h>
 #include <asm/irq.h>
@@ -369,10 +370,12 @@ void smp4d_message_pass(int target, int msg, unsigned long data, int wait)
 
 void smp4d_percpu_timer_interrupt(struct pt_regs *regs)
 {
+        struct pt_regs *old_regs;
         int cpu = hard_smp4d_processor_id();
         static int cpu_tick[NR_CPUS];
         static char led_mask[] = { 0xe, 0xd, 0xb, 0x7, 0xb, 0xd };
 
+        old_regs = set_irq_regs(regs);
         bw_get_prof_limit(cpu); 
         bw_clear_intr_mask(0, 1);       /* INTR_TABLE[0] & 1 is Profile IRQ */
 
@@ -384,7 +387,7 @@ void smp4d_percpu_timer_interrupt(struct pt_regs *regs)
                 show_leds(cpu);
         }
 
-        profile_tick(CPU_PROFILING, regs);
+        profile_tick(CPU_PROFILING);
 
         if(!--prof_counter(cpu)) {
                 int user = user_mode(regs);
@@ -395,6 +398,7 @@ void smp4d_percpu_timer_interrupt(struct pt_regs *regs)
 
                 prof_counter(cpu) = prof_multiplier(cpu);
         }
+        set_irq_regs(old_regs);
 }
 
 extern unsigned int lvl14_resolution;
diff --git a/arch/sparc/kernel/sun4m_irq.c b/arch/sparc/kernel/sun4m_irq.c
index 7cefa301efea..a654c16f4027 100644
--- a/arch/sparc/kernel/sun4m_irq.c
+++ b/arch/sparc/kernel/sun4m_irq.c
@@ -228,7 +228,7 @@ static void sun4m_load_profile_irq(int cpu, unsigned int limit)
         sun4m_timers->cpu_timers[cpu].l14_timer_limit = limit;
 }
 
-static void __init sun4m_init_timers(irqreturn_t (*counter_fn)(int, void *, struct pt_regs *))
+static void __init sun4m_init_timers(irq_handler_t counter_fn)
 {
         int reg_count, irq, cpu;
         struct linux_prom_registers cnt_regs[PROMREG_MAX];
diff --git a/arch/sparc/kernel/sun4m_smp.c b/arch/sparc/kernel/sun4m_smp.c
index 7d4a649138f6..e2d9c018bd56 100644
--- a/arch/sparc/kernel/sun4m_smp.c
+++ b/arch/sparc/kernel/sun4m_smp.c
@@ -19,6 +19,7 @@
 #include <linux/profile.h>
 #include <asm/cacheflush.h>
 #include <asm/tlbflush.h>
+#include <asm/irq_regs.h>
 
 #include <asm/ptrace.h>
 #include <asm/atomic.h>
@@ -353,11 +354,14 @@ void smp4m_cross_call_irq(void)
 
 void smp4m_percpu_timer_interrupt(struct pt_regs *regs)
 {
+        struct pt_regs *old_regs;
         int cpu = smp_processor_id();
 
+        old_regs = set_irq_regs(regs);
+
         clear_profile_irq(cpu);
 
-        profile_tick(CPU_PROFILING, regs);
+        profile_tick(CPU_PROFILING);
 
         if(!--prof_counter(cpu)) {
                 int user = user_mode(regs);
@@ -368,6 +372,7 @@ void smp4m_percpu_timer_interrupt(struct pt_regs *regs)
 
                 prof_counter(cpu) = prof_multiplier(cpu);
         }
+        set_irq_regs(old_regs);
 }
 
 extern unsigned int lvl14_resolution;
diff --git a/arch/sparc/kernel/tick14.c b/arch/sparc/kernel/tick14.c
index d3b4daac705f..f1a7bd19e04f 100644
--- a/arch/sparc/kernel/tick14.c
+++ b/arch/sparc/kernel/tick14.c
@@ -55,7 +55,7 @@ void install_obp_ticker(void)
         linux_lvl14[3] =  obp_lvl14[3]; 
 }
 
-void claim_ticker14(irqreturn_t (*handler)(int, void *, struct pt_regs *),
+void claim_ticker14(irq_handler_t handler,
                     int irq_nr, unsigned int timeout )
 {
         int cpu = smp_processor_id();
diff --git a/arch/sparc/kernel/time.c b/arch/sparc/kernel/time.c
index e10dc831944d..7dcd1a16c6e4 100644
--- a/arch/sparc/kernel/time.c
+++ b/arch/sparc/kernel/time.c
@@ -42,6 +42,7 @@
 #include <asm/page.h>
 #include <asm/pcic.h>
 #include <asm/of_device.h>
+#include <asm/irq_regs.h>
 
 DEFINE_SPINLOCK(rtc_lock);
 enum sparc_clock_type sp_clock_typ;
@@ -104,13 +105,13 @@ __volatile__ unsigned int *master_l10_limit;
 
 #define TICK_SIZE (tick_nsec / 1000)
 
-irqreturn_t timer_interrupt(int irq, void *dev_id, struct pt_regs * regs)
+irqreturn_t timer_interrupt(int irq, void *dev_id)
 {
         /* last time the cmos clock got updated */
         static long last_rtc_update;
 
 #ifndef CONFIG_SMP
-        profile_tick(CPU_PROFILING, regs);
+        profile_tick(CPU_PROFILING);
 #endif
 
         /* Protect counter clear so that do_gettimeoffset works */
@@ -128,7 +129,7 @@ irqreturn_t timer_interrupt(int irq, void *dev_id, struct pt_regs * regs)
 
         do_timer(1);
 #ifndef CONFIG_SMP
-        update_process_times(user_mode(regs));
+        update_process_times(user_mode(get_irq_regs()));
 #endif
 
 
diff --git a/arch/sparc/lib/locks.S b/arch/sparc/lib/locks.S
index 95fa48424967..b1df55cb2215 100644
--- a/arch/sparc/lib/locks.S
+++ b/arch/sparc/lib/locks.S
@@ -25,6 +25,15 @@ ___rw_read_enter_spin_on_wlock:
          ldstub [%g1 + 3], %g2
         b       ___rw_read_enter_spin_on_wlock
          ldub   [%g1 + 3], %g2
+___rw_read_try_spin_on_wlock:
+        andcc   %g2, 0xff, %g0
+        be,a    ___rw_read_try
+         ldstub [%g1 + 3], %g2
+        xnorcc  %g2, 0x0, %o0   /* if g2 is ~0, set o0 to 0 and bugger off */
+        bne,a   ___rw_read_enter_spin_on_wlock
+         ld     [%g1], %g2
+        retl
+         mov    %g4, %o7
 ___rw_read_exit_spin_on_wlock:
         orcc    %g2, 0x0, %g0
         be,a    ___rw_read_exit
@@ -60,6 +69,17 @@ ___rw_read_exit:
         retl
          mov    %g4, %o7
 
+        .globl  ___rw_read_try
+___rw_read_try:
+        orcc    %g2, 0x0, %g0
+        bne     ___rw_read_try_spin_on_wlock
+         ld     [%g1], %g2
+        add     %g2, 1, %g2
+        st      %g2, [%g1]
+        set     1, %o1
+        retl
+         mov    %g4, %o7
+
         .globl  ___rw_write_enter
 ___rw_write_enter:
         orcc    %g2, 0x0, %g0
diff --git a/arch/sparc64/defconfig b/arch/sparc64/defconfig
index f54ab375464b..dcae559879ae 100644
--- a/arch/sparc64/defconfig
+++ b/arch/sparc64/defconfig
@@ -1,7 +1,7 @@
 #
 # Automatically generated make config: don't edit
-# Linux kernel version: 2.6.18
-# Mon Oct  2 14:24:40 2006
+# Linux kernel version: 2.6.19-rc1
+# Thu Oct  5 02:08:41 2006
 #
 CONFIG_SPARC=y
 CONFIG_SPARC64=y
@@ -197,6 +197,7 @@ CONFIG_INET_XFRM_TUNNEL=y
 CONFIG_INET_TUNNEL=y
 CONFIG_INET_XFRM_MODE_TRANSPORT=y
 CONFIG_INET_XFRM_MODE_TUNNEL=y
+CONFIG_INET_XFRM_MODE_BEET=y
 CONFIG_INET_DIAG=y
 CONFIG_INET_TCP_DIAG=y
 # CONFIG_TCP_CONG_ADVANCED is not set
@@ -214,6 +215,7 @@ CONFIG_INET6_XFRM_TUNNEL=m
 CONFIG_INET6_TUNNEL=m
 CONFIG_INET6_XFRM_MODE_TRANSPORT=m
 CONFIG_INET6_XFRM_MODE_TUNNEL=m
+CONFIG_INET6_XFRM_MODE_BEET=m
 # CONFIG_INET6_XFRM_MODE_ROUTEOPTIMIZATION is not set
 CONFIG_IPV6_TUNNEL=m
 # CONFIG_IPV6_SUBTREES is not set
@@ -373,6 +375,7 @@ CONFIG_BLK_DEV_ALI15X3=y
 # CONFIG_BLK_DEV_CS5530 is not set
 # CONFIG_BLK_DEV_HPT34X is not set
 # CONFIG_BLK_DEV_HPT366 is not set
+# CONFIG_BLK_DEV_JMICRON is not set
 # CONFIG_BLK_DEV_SC1200 is not set
 # CONFIG_BLK_DEV_PIIX is not set
 # CONFIG_BLK_DEV_IT821X is not set
@@ -449,10 +452,10 @@ CONFIG_ISCSI_TCP=m
 # CONFIG_SCSI_INIA100 is not set
 # CONFIG_SCSI_STEX is not set
 # CONFIG_SCSI_SYM53C8XX_2 is not set
-# CONFIG_SCSI_IPR is not set
 # CONFIG_SCSI_QLOGIC_1280 is not set
 # CONFIG_SCSI_QLOGICPTI is not set
 # CONFIG_SCSI_QLA_FC is not set
+# CONFIG_SCSI_QLA_ISCSI is not set
 # CONFIG_SCSI_LPFC is not set
 # CONFIG_SCSI_DC395x is not set
 # CONFIG_SCSI_DC390T is not set
@@ -478,6 +481,7 @@ CONFIG_MD_RAID456=m
 CONFIG_MD_MULTIPATH=m
 # CONFIG_MD_FAULTY is not set
 CONFIG_BLK_DEV_DM=m
+# CONFIG_DM_DEBUG is not set
 CONFIG_DM_CRYPT=m
 CONFIG_DM_SNAPSHOT=m
 CONFIG_DM_MIRROR=m
@@ -840,12 +844,12 @@ CONFIG_HWMON=y
 #
 # Misc devices
 #
+# CONFIG_TIFM_CORE is not set
 
 #
 # Multimedia devices
 #
 # CONFIG_VIDEO_DEV is not set
-CONFIG_VIDEO_V4L2=y
 
 #
 # Digital Video Broadcasting Devices
@@ -858,6 +862,7 @@ CONFIG_VIDEO_V4L2=y
 #
 # CONFIG_FIRMWARE_EDID is not set
 CONFIG_FB=y
+CONFIG_FB_DDC=y
 CONFIG_FB_CFB_FILLRECT=y
 CONFIG_FB_CFB_COPYAREA=y
 CONFIG_FB_CFB_IMAGEBLIT=y
@@ -1236,6 +1241,7 @@ CONFIG_FS_MBCACHE=y
 # CONFIG_JFS_FS is not set
 CONFIG_FS_POSIX_ACL=y
 # CONFIG_XFS_FS is not set
+# CONFIG_GFS2_FS is not set
 # CONFIG_OCFS2_FS is not set
 # CONFIG_MINIX_FS is not set
 # CONFIG_ROMFS_FS is not set
@@ -1279,6 +1285,7 @@ CONFIG_RAMFS=y
 #
 # CONFIG_ADFS_FS is not set
 # CONFIG_AFFS_FS is not set
+# CONFIG_ECRYPT_FS is not set
 # CONFIG_HFS_FS is not set
 # CONFIG_HFSPLUS_FS is not set
 # CONFIG_BEFS_FS is not set
@@ -1355,6 +1362,10 @@ CONFIG_NLS_DEFAULT="iso8859-1"
 # CONFIG_NLS_UTF8 is not set
 
 #
+# Distributed Lock Manager
+#
+
+#
 # Instrumentation Support
 #
 CONFIG_PROFILING=y
diff --git a/arch/sparc64/kernel/ebus.c b/arch/sparc64/kernel/ebus.c
index 8a9b470e1b65..2df25c2b4071 100644
--- a/arch/sparc64/kernel/ebus.c
+++ b/arch/sparc64/kernel/ebus.c
@@ -79,7 +79,7 @@ static void __ebus_dma_reset(struct ebus_dma_info *p, int no_drain)
         }
 }
 
-static irqreturn_t ebus_dma_irq(int irq, void *dev_id, struct pt_regs *regs)
+static irqreturn_t ebus_dma_irq(int irq, void *dev_id)
 {
         struct ebus_dma_info *p = dev_id;
         unsigned long flags;
diff --git a/arch/sparc64/kernel/irq.c b/arch/sparc64/kernel/irq.c
index 4e64724cb9ae..d64b1ea848de 100644
--- a/arch/sparc64/kernel/irq.c
+++ b/arch/sparc64/kernel/irq.c
@@ -522,12 +522,13 @@ void ack_bad_irq(unsigned int virt_irq)
 }
 
 #ifndef CONFIG_SMP
-extern irqreturn_t timer_interrupt(int, void *, struct pt_regs *);
+extern irqreturn_t timer_interrupt(int, void *);
 
 void timer_irq(int irq, struct pt_regs *regs)
 {
         unsigned long clr_mask = 1 << irq;
         unsigned long tick_mask = tick_ops->softint_mask;
+        struct pt_regs *old_regs;
 
         if (get_softint() & tick_mask) {
                 irq = 0;
@@ -535,21 +536,25 @@ void timer_irq(int irq, struct pt_regs *regs)
         }
         clear_softint(clr_mask);
 
+        old_regs = set_irq_regs(regs);
         irq_enter();
 
         kstat_this_cpu.irqs[0]++;
-        timer_interrupt(irq, NULL, regs);
+        timer_interrupt(irq, NULL);
 
         irq_exit();
+        set_irq_regs(old_regs);
 }
 #endif
 
 void handler_irq(int irq, struct pt_regs *regs)
 {
         struct ino_bucket *bucket;
+        struct pt_regs *old_regs;
 
         clear_softint(1 << irq);
 
+        old_regs = set_irq_regs(regs);
         irq_enter();
 
         /* Sliiiick... */
@@ -558,12 +563,13 @@ void handler_irq(int irq, struct pt_regs *regs)
                 struct ino_bucket *next = __bucket(bucket->irq_chain);
 
                 bucket->irq_chain = 0;
-                __do_IRQ(bucket->virt_irq, regs);
+                __do_IRQ(bucket->virt_irq);
 
                 bucket = next;
         }
 
         irq_exit();
+        set_irq_regs(old_regs);
 }
 
 struct sun5_timer {
diff --git a/arch/sparc64/kernel/of_device.c b/arch/sparc64/kernel/of_device.c
index 7f9204535770..d822c7c18e1f 100644
--- a/arch/sparc64/kernel/of_device.c
+++ b/arch/sparc64/kernel/of_device.c
@@ -841,7 +841,7 @@ static struct of_device * __init scan_one_device(struct device_node *dp,
         if (!parent)
                 strcpy(op->dev.bus_id, "root");
         else
-                strcpy(op->dev.bus_id, dp->path_component_name);
+                sprintf(op->dev.bus_id, "%s@%08x", dp->name, dp->node);
 
         if (of_device_register(op)) {
                 printk("%s: Could not register of device.\n",
diff --git a/arch/sparc64/kernel/pci_psycho.c b/arch/sparc64/kernel/pci_psycho.c
index 1ec0aab68c08..fda5db223d96 100644
--- a/arch/sparc64/kernel/pci_psycho.c
+++ b/arch/sparc64/kernel/pci_psycho.c
@@ -533,7 +533,7 @@ static void psycho_check_iommu_error(struct pci_controller_info *p,
 #define  PSYCHO_UEAFSR_RESV2    0x00000000007fffffUL /* Reserved                     */
 #define PSYCHO_UE_AFAR  0x0038UL
 
-static irqreturn_t psycho_ue_intr(int irq, void *dev_id, struct pt_regs *regs)
+static irqreturn_t psycho_ue_intr(int irq, void *dev_id)
 {
         struct pci_controller_info *p = dev_id;
         unsigned long afsr_reg = p->pbm_A.controller_regs + PSYCHO_UE_AFSR;
@@ -610,7 +610,7 @@ static irqreturn_t psycho_ue_intr(int irq, void *dev_id, struct pt_regs *regs)
 #define  PSYCHO_CEAFSR_RESV2    0x00000000007fffffUL /* Reserved                     */
 #define PSYCHO_CE_AFAR  0x0040UL
 
-static irqreturn_t psycho_ce_intr(int irq, void *dev_id, struct pt_regs *regs)
+static irqreturn_t psycho_ce_intr(int irq, void *dev_id)
 {
         struct pci_controller_info *p = dev_id;
         unsigned long afsr_reg = p->pbm_A.controller_regs + PSYCHO_CE_AFSR;
@@ -735,7 +735,7 @@ static irqreturn_t psycho_pcierr_intr_other(struct pci_pbm_info *pbm, int is_pbm
         return ret;
 }
 
-static irqreturn_t psycho_pcierr_intr(int irq, void *dev_id, struct pt_regs *regs)
+static irqreturn_t psycho_pcierr_intr(int irq, void *dev_id)
 {
         struct pci_pbm_info *pbm = dev_id;
         struct pci_controller_info *p = pbm->parent;
diff --git a/arch/sparc64/kernel/pci_sabre.c b/arch/sparc64/kernel/pci_sabre.c
index 45891850b90d..6ec569828c29 100644
--- a/arch/sparc64/kernel/pci_sabre.c
+++ b/arch/sparc64/kernel/pci_sabre.c
@@ -574,7 +574,7 @@ static void sabre_check_iommu_error(struct pci_controller_info *p,
         spin_unlock_irqrestore(&iommu->lock, flags);
 }
 
-static irqreturn_t sabre_ue_intr(int irq, void *dev_id, struct pt_regs *regs)
+static irqreturn_t sabre_ue_intr(int irq, void *dev_id)
 {
         struct pci_controller_info *p = dev_id;
         unsigned long afsr_reg = p->pbm_A.controller_regs + SABRE_UE_AFSR;
@@ -634,7 +634,7 @@ static irqreturn_t sabre_ue_intr(int irq, void *dev_id, struct pt_regs *regs)
         return IRQ_HANDLED;
 }
 
-static irqreturn_t sabre_ce_intr(int irq, void *dev_id, struct pt_regs *regs)
+static irqreturn_t sabre_ce_intr(int irq, void *dev_id)
 {
         struct pci_controller_info *p = dev_id;
         unsigned long afsr_reg = p->pbm_A.controller_regs + SABRE_CE_AFSR;
@@ -726,7 +726,7 @@ static irqreturn_t sabre_pcierr_intr_other(struct pci_controller_info *p)
         return ret;
 }
 
-static irqreturn_t sabre_pcierr_intr(int irq, void *dev_id, struct pt_regs *regs)
+static irqreturn_t sabre_pcierr_intr(int irq, void *dev_id)
 {
         struct pci_controller_info *p = dev_id;
         unsigned long afsr_reg, afar_reg;
diff --git a/arch/sparc64/kernel/pci_schizo.c b/arch/sparc64/kernel/pci_schizo.c
index 75ade83ecc65..66911b126aed 100644
--- a/arch/sparc64/kernel/pci_schizo.c
+++ b/arch/sparc64/kernel/pci_schizo.c
@@ -515,7 +515,7 @@ static void schizo_check_iommu_error(struct pci_controller_info *p,
 #define SCHIZO_UEAFSR_MTAG      0x000000000000e000UL /* Safari */
 #define SCHIZO_UEAFSR_ECCSYND   0x00000000000001ffUL /* Safari */
 
-static irqreturn_t schizo_ue_intr(int irq, void *dev_id, struct pt_regs *regs)
+static irqreturn_t schizo_ue_intr(int irq, void *dev_id)
 {
         struct pci_controller_info *p = dev_id;
         unsigned long afsr_reg = p->pbm_B.controller_regs + SCHIZO_UE_AFSR;
@@ -603,7 +603,7 @@ static irqreturn_t schizo_ue_intr(int irq, void *dev_id, struct pt_regs *regs)
 #define SCHIZO_CEAFSR_MTAG      0x000000000000e000UL
 #define SCHIZO_CEAFSR_ECCSYND   0x00000000000001ffUL
 
-static irqreturn_t schizo_ce_intr(int irq, void *dev_id, struct pt_regs *regs)
+static irqreturn_t schizo_ce_intr(int irq, void *dev_id)
 {
         struct pci_controller_info *p = dev_id;
         unsigned long afsr_reg = p->pbm_B.controller_regs + SCHIZO_CE_AFSR;
@@ -778,7 +778,7 @@ static irqreturn_t schizo_pcierr_intr_other(struct pci_pbm_info *pbm)
         return ret;
 }
 
-static irqreturn_t schizo_pcierr_intr(int irq, void *dev_id, struct pt_regs *regs)
+static irqreturn_t schizo_pcierr_intr(int irq, void *dev_id)
 {
         struct pci_pbm_info *pbm = dev_id;
         struct pci_controller_info *p = pbm->parent;
@@ -933,7 +933,7 @@ static irqreturn_t schizo_pcierr_intr(int irq, void *dev_id, struct pt_regs *reg
 /* We only expect UNMAP errors here.  The rest of the Safari errors
  * are marked fatal and thus cause a system reset.
  */
-static irqreturn_t schizo_safarierr_intr(int irq, void *dev_id, struct pt_regs *regs)
+static irqreturn_t schizo_safarierr_intr(int irq, void *dev_id)
 {
         struct pci_controller_info *p = dev_id;
         u64 errlog;
diff --git a/arch/sparc64/kernel/power.c b/arch/sparc64/kernel/power.c
index 0b9c70627ce4..699b24b890df 100644
--- a/arch/sparc64/kernel/power.c
+++ b/arch/sparc64/kernel/power.c
@@ -35,7 +35,7 @@ static void __iomem *power_reg;
 static DECLARE_WAIT_QUEUE_HEAD(powerd_wait);
 static int button_pressed;
 
-static irqreturn_t power_handler(int irq, void *dev_id, struct pt_regs *regs)
+static irqreturn_t power_handler(int irq, void *dev_id)
 {
         if (button_pressed == 0) {
                 button_pressed = 1;
diff --git a/arch/sparc64/kernel/sbus.c b/arch/sparc64/kernel/sbus.c
index c49a57795743..01d6d869ea2b 100644
--- a/arch/sparc64/kernel/sbus.c
+++ b/arch/sparc64/kernel/sbus.c
@@ -839,7 +839,7 @@ unsigned int sbus_build_irq(void *buscookie, unsigned int ino)
 #define  SYSIO_UEAFSR_SIZE  0x00001c0000000000UL /* Bad transfer size 2^SIZE  */
 #define  SYSIO_UEAFSR_MID   0x000003e000000000UL /* UPA MID causing the fault */
 #define  SYSIO_UEAFSR_RESV2 0x0000001fffffffffUL /* Reserved                  */
-static irqreturn_t sysio_ue_handler(int irq, void *dev_id, struct pt_regs *regs)
+static irqreturn_t sysio_ue_handler(int irq, void *dev_id)
 {
         struct sbus_bus *sbus = dev_id;
         struct sbus_iommu *iommu = sbus->iommu;
@@ -911,7 +911,7 @@ static irqreturn_t sysio_ue_handler(int irq, void *dev_id, struct pt_regs *regs)
 #define  SYSIO_CEAFSR_SIZE  0x00001c0000000000UL /* Bad transfer size 2^SIZE  */
 #define  SYSIO_CEAFSR_MID   0x000003e000000000UL /* UPA MID causing the fault */
 #define  SYSIO_CEAFSR_RESV2 0x0000001fffffffffUL /* Reserved                  */
-static irqreturn_t sysio_ce_handler(int irq, void *dev_id, struct pt_regs *regs)
+static irqreturn_t sysio_ce_handler(int irq, void *dev_id)
 {
         struct sbus_bus *sbus = dev_id;
         struct sbus_iommu *iommu = sbus->iommu;
@@ -988,7 +988,7 @@ static irqreturn_t sysio_ce_handler(int irq, void *dev_id, struct pt_regs *regs)
 #define  SYSIO_SBAFSR_SIZE  0x00001c0000000000UL /* Size of transfer          */
 #define  SYSIO_SBAFSR_MID   0x000003e000000000UL /* MID causing the error     */
 #define  SYSIO_SBAFSR_RESV3 0x0000001fffffffffUL /* Reserved                  */
-static irqreturn_t sysio_sbus_error_handler(int irq, void *dev_id, struct pt_regs *regs)
+static irqreturn_t sysio_sbus_error_handler(int irq, void *dev_id)
 {
         struct sbus_bus *sbus = dev_id;
         struct sbus_iommu *iommu = sbus->iommu;
diff --git a/arch/sparc64/kernel/smp.c b/arch/sparc64/kernel/smp.c
index f62bf3a2de1a..cc09d8266414 100644
--- a/arch/sparc64/kernel/smp.c
+++ b/arch/sparc64/kernel/smp.c
@@ -31,6 +31,7 @@
 #include <asm/cpudata.h>
 
 #include <asm/irq.h>
+#include <asm/irq_regs.h>
 #include <asm/page.h>
 #include <asm/pgtable.h>
 #include <asm/oplib.h>
@@ -1187,6 +1188,7 @@ void smp_percpu_timer_interrupt(struct pt_regs *regs)
         unsigned long compare, tick, pstate;
         int cpu = smp_processor_id();
         int user = user_mode(regs);
+        struct pt_regs *old_regs;
 
         /*
          * Check for level 14 softint.
@@ -1203,8 +1205,9 @@ void smp_percpu_timer_interrupt(struct pt_regs *regs)
                 clear_softint(tick_mask);
         }
 
+        old_regs = set_irq_regs(regs);
         do {
-                profile_tick(CPU_PROFILING, regs);
+                profile_tick(CPU_PROFILING);
                 if (!--prof_counter(cpu)) {
                         irq_enter();
 
@@ -1236,6 +1239,7 @@ void smp_percpu_timer_interrupt(struct pt_regs *regs)
                                      : /* no outputs */
                                      : "r" (pstate));
         } while (time_after_eq(tick, compare));
+        set_irq_regs(old_regs);
 }
 
 static void __init smp_setup_percpu_timer(void)
diff --git a/arch/sparc64/kernel/time.c b/arch/sparc64/kernel/time.c
index 00f6fc4aaaff..061e1b1fa583 100644
--- a/arch/sparc64/kernel/time.c
+++ b/arch/sparc64/kernel/time.c
@@ -45,6 +45,7 @@
 #include <asm/cpudata.h>
 #include <asm/uaccess.h>
 #include <asm/prom.h>
+#include <asm/irq_regs.h>
 
 DEFINE_SPINLOCK(mostek_lock);
 DEFINE_SPINLOCK(rtc_lock);
@@ -452,7 +453,7 @@ static inline void timer_check_rtc(void)
         }
 }
 
-irqreturn_t timer_interrupt(int irq, void *dev_id, struct pt_regs * regs)
+irqreturn_t timer_interrupt(int irq, void *dev_id)
 {
         unsigned long ticks, compare, pstate;
 
@@ -460,8 +461,8 @@ irqreturn_t timer_interrupt(int irq, void *dev_id, struct pt_regs * regs)
 
         do {
 #ifndef CONFIG_SMP
-                profile_tick(CPU_PROFILING, regs);
-                update_process_times(user_mode(regs));
+                profile_tick(CPU_PROFILING);
+                update_process_times(user_mode(get_irq_regs()));
 #endif
                 do_timer(1);
 
diff --git a/arch/um/drivers/line.c b/arch/um/drivers/line.c
index cfd9f01fd464..426633e5d6e3 100644
--- a/arch/um/drivers/line.c
+++ b/arch/um/drivers/line.c
@@ -20,7 +20,7 @@
 
 #define LINE_BUFSIZE 4096
 
-static irqreturn_t line_interrupt(int irq, void *data, struct pt_regs *unused)
+static irqreturn_t line_interrupt(int irq, void *data)
 {
         struct chan *chan = data;
         struct line *line = chan->line;
@@ -364,8 +364,7 @@ void line_unthrottle(struct tty_struct *tty)
                 reactivate_chan(&line->chan_list, line->driver->read_irq);
 }
 
-static irqreturn_t line_write_interrupt(int irq, void *data,
-                                        struct pt_regs *unused)
+static irqreturn_t line_write_interrupt(int irq, void *data)
 {
         struct chan *chan = data;
         struct line *line = chan->line;
@@ -712,7 +711,7 @@ struct winch {
         struct tty_struct *tty;
 };
 
-static irqreturn_t winch_interrupt(int irq, void *data, struct pt_regs *unused)
+static irqreturn_t winch_interrupt(int irq, void *data)
 {
         struct winch *winch = data;
         struct tty_struct *tty;
diff --git a/arch/um/drivers/mconsole_kern.c b/arch/um/drivers/mconsole_kern.c
index a67dcbd78de4..d08bd036ccb8 100644
--- a/arch/um/drivers/mconsole_kern.c
+++ b/arch/um/drivers/mconsole_kern.c
@@ -74,8 +74,7 @@ static void mc_work_proc(void *unused)
 
 static DECLARE_WORK(mconsole_work, mc_work_proc, NULL);
 
-static irqreturn_t mconsole_interrupt(int irq, void *dev_id,
-                                      struct pt_regs *regs)
+static irqreturn_t mconsole_interrupt(int irq, void *dev_id)
 {
         /* long to avoid size mismatch warnings from gcc */
         long fd;
@@ -674,8 +673,9 @@ static void with_console(struct mc_request *req, void (*proc)(void *),
 static void sysrq_proc(void *arg)
 {
         char *op = arg;
-
-        handle_sysrq(*op, &current->thread.regs, NULL);
+        struct pt_regs *old_regs = set_irq_regs(&current->thread.regs);
+        handle_sysrq(*op, NULL);
+        set_irq_regs(old_regs);
 }
 
 void mconsole_sysrq(struct mc_request *req)
diff --git a/arch/um/drivers/net_kern.c b/arch/um/drivers/net_kern.c
index c1c5604752fb..ec9eb8bd9432 100644
--- a/arch/um/drivers/net_kern.c
+++ b/arch/um/drivers/net_kern.c
@@ -77,7 +77,7 @@ static void uml_dev_close(void* dev)
         dev_close( (struct net_device *) dev);
 }
 
-irqreturn_t uml_net_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+irqreturn_t uml_net_interrupt(int irq, void *dev_id)
 {
         struct net_device *dev = dev_id;
         struct uml_net_private *lp = dev->priv;
diff --git a/arch/um/drivers/pcap_user.h b/arch/um/drivers/pcap_user.h
index 58f9f6a1420f..96b80b565eeb 100644
--- a/arch/um/drivers/pcap_user.h
+++ b/arch/um/drivers/pcap_user.h
@@ -15,7 +15,7 @@ struct pcap_data {
         void *dev;
 };
 
-extern struct net_user_info pcap_user_info;
+extern const struct net_user_info pcap_user_info;
 
 extern int pcap_user_read(int fd, void *buf, int len, struct pcap_data *pri);
 
diff --git a/arch/um/drivers/port_kern.c b/arch/um/drivers/port_kern.c
index 73755f37a8a8..ce9f3733f73e 100644
--- a/arch/um/drivers/port_kern.c
+++ b/arch/um/drivers/port_kern.c
@@ -47,7 +47,7 @@ struct connection {
         struct port_list *port;
 };
 
-static irqreturn_t pipe_interrupt(int irq, void *data, struct pt_regs *regs)
+static irqreturn_t pipe_interrupt(int irq, void *data)
 {
         struct connection *conn = data;
         int fd;
@@ -152,7 +152,7 @@ void port_work_proc(void *unused)
 
 DECLARE_WORK(port_work, port_work_proc, NULL);
 
-static irqreturn_t port_interrupt(int irq, void *data, struct pt_regs *regs)
+static irqreturn_t port_interrupt(int irq, void *data)
 {
         struct port_list *port = data;
 
diff --git a/arch/um/drivers/ubd_kern.c b/arch/um/drivers/ubd_kern.c
index f0b0668458b7..bc458f57921b 100644
--- a/arch/um/drivers/ubd_kern.c
+++ b/arch/um/drivers/ubd_kern.c
@@ -524,7 +524,7 @@ static void ubd_handler(void)
         do_ubd_request(ubd_queue);
 }
 
-static irqreturn_t ubd_intr(int irq, void *dev, struct pt_regs *unused)
+static irqreturn_t ubd_intr(int irq, void *dev)
 {
         ubd_handler();
         return(IRQ_HANDLED);
diff --git a/arch/um/drivers/xterm_kern.c b/arch/um/drivers/xterm_kern.c
index 6036ec85895a..a4ce7058e10e 100644
--- a/arch/um/drivers/xterm_kern.c
+++ b/arch/um/drivers/xterm_kern.c
@@ -21,7 +21,7 @@ struct xterm_wait {
         int new_fd;
 };
 
-static irqreturn_t xterm_interrupt(int irq, void *data, struct pt_regs *regs)
+static irqreturn_t xterm_interrupt(int irq, void *data)
 {
         struct xterm_wait *xterm = data;
         int fd;
diff --git a/arch/um/include/irq_kern.h b/arch/um/include/irq_kern.h
index c222d56b1494..4f775597fd5f 100644
--- a/arch/um/include/irq_kern.h
+++ b/arch/um/include/irq_kern.h
@@ -10,12 +10,11 @@
 #include "asm/ptrace.h"
 
 extern int um_request_irq(unsigned int irq, int fd, int type,
-                          irqreturn_t (*handler)(int, void *,
-                                                 struct pt_regs *),
+                          irq_handler_t handler,
                           unsigned long irqflags,  const char * devname,
                           void *dev_id);
 extern int init_aio_irq(int irq, char *name,
-                        irqreturn_t (*handler)(int, void *, struct pt_regs *));
+                        irq_handler_t handler);
 
 #endif
 
diff --git a/arch/um/kernel/irq.c b/arch/um/kernel/irq.c
index eee97bb81ba5..ef259569fd8c 100644
--- a/arch/um/kernel/irq.c
+++ b/arch/um/kernel/irq.c
@@ -355,14 +355,16 @@ void forward_interrupts(int pid)
  */
 unsigned int do_IRQ(int irq, union uml_pt_regs *regs)
 {
-       irq_enter();
-       __do_IRQ(irq, (struct pt_regs *)regs);
-       irq_exit();
-       return 1;
+        struct pt_regs *old_regs = set_irq_regs((struct pt_regs *)regs);
+        irq_enter();
+        __do_IRQ(irq);
+        irq_exit();
+        set_irq_regs(old_regs);
+        return 1;
 }
 
 int um_request_irq(unsigned int irq, int fd, int type,
-                   irqreturn_t (*handler)(int, void *, struct pt_regs *),
+                   irq_handler_t handler,
                    unsigned long irqflags, const char * devname,
                    void *dev_id)
 {
@@ -423,8 +425,7 @@ void __init init_IRQ(void)
         }
 }
 
-int init_aio_irq(int irq, char *name, irqreturn_t (*handler)(int, void *,
-                                                             struct pt_regs *))
+int init_aio_irq(int irq, char *name, irq_handler_t handler)
 {
         int fds[2], err;
 
diff --git a/arch/um/kernel/sigio.c b/arch/um/kernel/sigio.c
index 0ad755ceb212..2b0ab438301c 100644
--- a/arch/um/kernel/sigio.c
+++ b/arch/um/kernel/sigio.c
@@ -17,7 +17,7 @@
 /* Protected by sigio_lock() called from write_sigio_workaround */
 static int sigio_irq_fd = -1;
 
-static irqreturn_t sigio_interrupt(int irq, void *data, struct pt_regs *unused)
+static irqreturn_t sigio_interrupt(int irq, void *data)
 {
         char c;
 
diff --git a/arch/um/kernel/time.c b/arch/um/kernel/time.c
index a92965f8f9cd..2e354b3ca060 100644
--- a/arch/um/kernel/time.c
+++ b/arch/um/kernel/time.c
@@ -86,7 +86,7 @@ static inline unsigned long long get_time(void)
         return nsecs;
 }
 
-irqreturn_t um_timer(int irq, void *dev, struct pt_regs *regs)
+irqreturn_t um_timer(int irq, void *dev)
 {
         unsigned long long nsecs;
         unsigned long flags;
diff --git a/arch/x86_64/defconfig b/arch/x86_64/defconfig
index 4844b543bed0..47bfba6e9dc4 100644
--- a/arch/x86_64/defconfig
+++ b/arch/x86_64/defconfig
@@ -1,7 +1,7 @@
 #
 # Automatically generated make config: don't edit
-# Linux kernel version: 2.6.18-git7
-# Wed Sep 27 21:53:10 2006
+# Linux kernel version: 2.6.19-rc1
+# Thu Oct  5 13:04:43 2006
 #
 CONFIG_X86_64=y
 CONFIG_64BIT=y
@@ -19,6 +19,7 @@ CONFIG_EARLY_PRINTK=y
 CONFIG_GENERIC_ISA_DMA=y
 CONFIG_GENERIC_IOMAP=y
 CONFIG_ARCH_MAY_HAVE_PC_FDC=y
+CONFIG_ARCH_POPULATES_NODE_MAP=y
 CONFIG_DMI=y
 CONFIG_AUDIT_ARCH=y
 CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
@@ -37,9 +38,11 @@ CONFIG_LOCALVERSION=""
 CONFIG_LOCALVERSION_AUTO=y
 CONFIG_SWAP=y
 CONFIG_SYSVIPC=y
+# CONFIG_IPC_NS is not set
 CONFIG_POSIX_MQUEUE=y
 # CONFIG_BSD_PROCESS_ACCT is not set
 # CONFIG_TASKSTATS is not set
+# CONFIG_UTS_NS is not set
 # CONFIG_AUDIT is not set
 CONFIG_IKCONFIG=y
 CONFIG_IKCONFIG_PROC=y
@@ -47,9 +50,10 @@ CONFIG_IKCONFIG_PROC=y
 # CONFIG_RELAY is not set
 CONFIG_INITRAMFS_SOURCE=""
 CONFIG_CC_OPTIMIZE_FOR_SIZE=y
+CONFIG_SYSCTL=y
 # CONFIG_EMBEDDED is not set
 CONFIG_UID16=y
-CONFIG_SYSCTL=y
+# CONFIG_SYSCTL_SYSCALL is not set
 CONFIG_KALLSYMS=y
 CONFIG_KALLSYMS_ALL=y
 # CONFIG_KALLSYMS_EXTRA_PASS is not set
@@ -82,6 +86,7 @@ CONFIG_STOP_MACHINE=y
 #
 # Block layer
 #
+CONFIG_BLOCK=y
 CONFIG_LBD=y
 # CONFIG_BLK_DEV_IO_TRACE is not set
 # CONFIG_LSF is not set
@@ -252,9 +257,11 @@ CONFIG_PCI=y
 CONFIG_PCI_DIRECT=y
 CONFIG_PCI_MMCONFIG=y
 CONFIG_PCIEPORTBUS=y
+CONFIG_PCIEAER=y
 CONFIG_PCI_MSI=y
 # CONFIG_PCI_MULTITHREAD_PROBE is not set
 # CONFIG_PCI_DEBUG is not set
+# CONFIG_HT_IRQ is not set
 
 #
 # PCCARD (PCMCIA/CardBus) support
@@ -309,6 +316,7 @@ CONFIG_IP_PNP_DHCP=y
 # CONFIG_INET_TUNNEL is not set
 # CONFIG_INET_XFRM_MODE_TRANSPORT is not set
 # CONFIG_INET_XFRM_MODE_TUNNEL is not set
+# CONFIG_INET_XFRM_MODE_BEET is not set
 CONFIG_INET_DIAG=y
 CONFIG_INET_TCP_DIAG=y
 # CONFIG_TCP_CONG_ADVANCED is not set
@@ -325,6 +333,7 @@ CONFIG_IPV6=y
 # CONFIG_INET6_TUNNEL is not set
 # CONFIG_INET6_XFRM_MODE_TRANSPORT is not set
 # CONFIG_INET6_XFRM_MODE_TUNNEL is not set
+# CONFIG_INET6_XFRM_MODE_BEET is not set
 # CONFIG_INET6_XFRM_MODE_ROUTEOPTIMIZATION is not set
 # CONFIG_IPV6_TUNNEL is not set
 # CONFIG_IPV6_SUBTREES is not set
@@ -473,6 +482,7 @@ CONFIG_BLK_DEV_ATIIXP=y
 # CONFIG_BLK_DEV_CS5530 is not set
 # CONFIG_BLK_DEV_HPT34X is not set
 # CONFIG_BLK_DEV_HPT366 is not set
+# CONFIG_BLK_DEV_JMICRON is not set
 # CONFIG_BLK_DEV_SC1200 is not set
 CONFIG_BLK_DEV_PIIX=y
 # CONFIG_BLK_DEV_IT821X is not set
@@ -564,6 +574,7 @@ CONFIG_MEGARAID_SAS=y
 # CONFIG_SCSI_IPR is not set
 # CONFIG_SCSI_QLOGIC_1280 is not set
 # CONFIG_SCSI_QLA_FC is not set
+# CONFIG_SCSI_QLA_ISCSI is not set
 # CONFIG_SCSI_LPFC is not set
 # CONFIG_SCSI_DC395x is not set
 # CONFIG_SCSI_DC390T is not set
@@ -605,7 +616,6 @@ CONFIG_SATA_INTEL_COMBINED=y
 # CONFIG_PATA_HPT3X3 is not set
 # CONFIG_PATA_IT821X is not set
 # CONFIG_PATA_JMICRON is not set
-# CONFIG_PATA_LEGACY is not set
 # CONFIG_PATA_TRIFLEX is not set
 # CONFIG_PATA_MPIIX is not set
 # CONFIG_PATA_OLDPIIX is not set
@@ -614,7 +624,6 @@ CONFIG_SATA_INTEL_COMBINED=y
 # CONFIG_PATA_OPTI is not set
 # CONFIG_PATA_OPTIDMA is not set
 # CONFIG_PATA_PDC_OLD is not set
-# CONFIG_PATA_QDI is not set
 # CONFIG_PATA_RADISYS is not set
 # CONFIG_PATA_RZ1000 is not set
 # CONFIG_PATA_SC1200 is not set
@@ -631,6 +640,7 @@ CONFIG_SATA_INTEL_COMBINED=y
 CONFIG_MD=y
 # CONFIG_BLK_DEV_MD is not set
 CONFIG_BLK_DEV_DM=y
+# CONFIG_DM_DEBUG is not set
 # CONFIG_DM_CRYPT is not set
 # CONFIG_DM_SNAPSHOT is not set
 # CONFIG_DM_MIRROR is not set
@@ -819,6 +829,7 @@ CONFIG_NET_POLL_CONTROLLER=y
 # Input device support
 #
 CONFIG_INPUT=y
+# CONFIG_INPUT_FF_MEMLESS is not set
 
 #
 # Userland interfaces
@@ -841,6 +852,7 @@ CONFIG_KEYBOARD_ATKBD=y
 # CONFIG_KEYBOARD_LKKBD is not set
 # CONFIG_KEYBOARD_XTKBD is not set
 # CONFIG_KEYBOARD_NEWTON is not set
+# CONFIG_KEYBOARD_STOWAWAY is not set
 CONFIG_INPUT_MOUSE=y
 CONFIG_MOUSE_PS2=y
 # CONFIG_MOUSE_SERIAL is not set
@@ -1008,6 +1020,7 @@ CONFIG_HWMON=y
 # CONFIG_SENSORS_ADM1026 is not set
 # CONFIG_SENSORS_ADM1031 is not set
 # CONFIG_SENSORS_ADM9240 is not set
+# CONFIG_SENSORS_K8TEMP is not set
 # CONFIG_SENSORS_ASB100 is not set
 # CONFIG_SENSORS_ATXP1 is not set
 # CONFIG_SENSORS_DS1621 is not set
@@ -1034,6 +1047,7 @@ CONFIG_HWMON=y
 # CONFIG_SENSORS_SMSC47M192 is not set
 CONFIG_SENSORS_SMSC47B397=m
 # CONFIG_SENSORS_VIA686A is not set
+# CONFIG_SENSORS_VT1211 is not set
 # CONFIG_SENSORS_VT8231 is not set
 # CONFIG_SENSORS_W83781D is not set
 # CONFIG_SENSORS_W83791D is not set
@@ -1048,12 +1062,12 @@ CONFIG_SENSORS_SMSC47B397=m
 # Misc devices
 #
 # CONFIG_IBM_ASM is not set
+# CONFIG_TIFM_CORE is not set
 
 #
 # Multimedia devices
 #
 # CONFIG_VIDEO_DEV is not set
-CONFIG_VIDEO_V4L2=y
 
 #
 # Digital Video Broadcasting Devices
@@ -1159,6 +1173,7 @@ CONFIG_USB_STORAGE=y
 # CONFIG_USB_STORAGE_SDDR55 is not set
 # CONFIG_USB_STORAGE_JUMPSHOT is not set
 # CONFIG_USB_STORAGE_ALAUDA is not set
+# CONFIG_USB_STORAGE_KARMA is not set
 # CONFIG_USB_LIBUSUAL is not set
 
 #
@@ -1181,6 +1196,7 @@ CONFIG_USB_HIDINPUT=y
 # CONFIG_USB_ATI_REMOTE2 is not set
 # CONFIG_USB_KEYSPAN_REMOTE is not set
 # CONFIG_USB_APPLETOUCH is not set
+# CONFIG_USB_TRANCEVIBRATOR is not set
 
 #
 # USB Imaging devices
@@ -1212,6 +1228,7 @@ CONFIG_USB_MON=y
 #
 # CONFIG_USB_EMI62 is not set
 # CONFIG_USB_EMI26 is not set
+# CONFIG_USB_ADUTUX is not set
 # CONFIG_USB_AUERSWALD is not set
 # CONFIG_USB_RIO500 is not set
 # CONFIG_USB_LEGOTOWER is not set
@@ -1219,9 +1236,9 @@ CONFIG_USB_MON=y
 # CONFIG_USB_LED is not set
 # CONFIG_USB_CYPRESS_CY7C63 is not set
 # CONFIG_USB_CYTHERM is not set
-# CONFIG_USB_PHIDGETKIT is not set
-# CONFIG_USB_PHIDGETSERVO is not set
+# CONFIG_USB_PHIDGET is not set
 # CONFIG_USB_IDMOUSE is not set
+# CONFIG_USB_FTDI_ELAN is not set
 # CONFIG_USB_APPLEDISPLAY is not set
 # CONFIG_USB_SISUSBVGA is not set
 # CONFIG_USB_LD is not set
@@ -1313,6 +1330,7 @@ CONFIG_REISERFS_FS_POSIX_ACL=y
 # CONFIG_JFS_FS is not set
 CONFIG_FS_POSIX_ACL=y
 # CONFIG_XFS_FS is not set
+# CONFIG_GFS2_FS is not set
 # CONFIG_OCFS2_FS is not set
 # CONFIG_MINIX_FS is not set
 # CONFIG_ROMFS_FS is not set
@@ -1347,8 +1365,10 @@ CONFIG_FAT_DEFAULT_IOCHARSET="iso8859-1"
 #
 CONFIG_PROC_FS=y
 CONFIG_PROC_KCORE=y
+CONFIG_PROC_SYSCTL=y
 CONFIG_SYSFS=y
 CONFIG_TMPFS=y
+CONFIG_TMPFS_POSIX_ACL=y
 CONFIG_HUGETLBFS=y
 CONFIG_HUGETLB_PAGE=y
 CONFIG_RAMFS=y
@@ -1398,6 +1418,7 @@ CONFIG_SUNRPC=y
 # CONFIG_CODA_FS is not set
 # CONFIG_AFS_FS is not set
 # CONFIG_9P_FS is not set
+CONFIG_GENERIC_ACL=y
 
 #
 # Partition Types
@@ -1450,6 +1471,10 @@ CONFIG_NLS_ISO8859_15=y
 CONFIG_NLS_UTF8=y
 
 #
+# Distributed Lock Manager
+#
+
+#
 # Instrumentation Support
 #
 CONFIG_PROFILING=y
@@ -1482,11 +1507,13 @@ CONFIG_DETECT_SOFTLOCKUP=y
 # CONFIG_DEBUG_INFO is not set
 CONFIG_DEBUG_FS=y
 # CONFIG_DEBUG_VM is not set
+# CONFIG_DEBUG_LIST is not set
 # CONFIG_FRAME_POINTER is not set
 CONFIG_UNWIND_INFO=y
 CONFIG_STACK_UNWIND=y
 # CONFIG_FORCED_INLINING is not set
 # CONFIG_RCU_TORTURE_TEST is not set
+# CONFIG_LKDTM is not set
 # CONFIG_DEBUG_RODATA is not set
 # CONFIG_IOMMU_DEBUG is not set
 CONFIG_DEBUG_STACKOVERFLOW=y
diff --git a/arch/x86_64/ia32/ptrace32.c b/arch/x86_64/ia32/ptrace32.c
index d18198ed636b..3a7561d4703e 100644
--- a/arch/x86_64/ia32/ptrace32.c
+++ b/arch/x86_64/ia32/ptrace32.c
@@ -205,9 +205,9 @@ static int getreg32(struct task_struct *child, unsigned regno, u32 *val)
 static long ptrace32_siginfo(unsigned request, u32 pid, u32 addr, u32 data)
 {
         int ret;
-        compat_siginfo_t *si32 = (compat_siginfo_t *)compat_ptr(data);
+        compat_siginfo_t __user *si32 = compat_ptr(data);
         siginfo_t ssi; 
-        siginfo_t *si = compat_alloc_user_space(sizeof(siginfo_t));
+        siginfo_t __user *si = compat_alloc_user_space(sizeof(siginfo_t));
         if (request == PTRACE_SETSIGINFO) {
                 memset(&ssi, 0, sizeof(siginfo_t));
                 ret = copy_siginfo_from_user32(&ssi, si32);
diff --git a/arch/x86_64/kernel/apic.c b/arch/x86_64/kernel/apic.c
index 6472e321cad7..4d9d5ed942b2 100644
--- a/arch/x86_64/kernel/apic.c
+++ b/arch/x86_64/kernel/apic.c
@@ -885,14 +885,14 @@ void setup_APIC_extened_lvt(unsigned char lvt_off, unsigned char vector,
  * value into /proc/profile.
  */
 
-void smp_local_timer_interrupt(struct pt_regs *regs)
+void smp_local_timer_interrupt(void)
 {
-        profile_tick(CPU_PROFILING, regs);
+        profile_tick(CPU_PROFILING);
 #ifdef CONFIG_SMP
-        update_process_times(user_mode(regs));
+        update_process_times(user_mode(get_irq_regs()));
 #endif
         if (apic_runs_main_timer > 1 && smp_processor_id() == boot_cpu_id)
-                main_timer_handler(regs);
+                main_timer_handler();
         /*
          * We take the 'long' return path, and there every subsystem
          * grabs the appropriate locks (kernel lock/ irq lock).
@@ -915,6 +915,8 @@ void smp_local_timer_interrupt(struct pt_regs *regs)
  */
 void smp_apic_timer_interrupt(struct pt_regs *regs)
 {
+        struct pt_regs *old_regs = set_irq_regs(regs);
+
         /*
          * the NMI deadlock-detector uses this.
          */
@@ -932,8 +934,9 @@ void smp_apic_timer_interrupt(struct pt_regs *regs)
          */
         exit_idle();
         irq_enter();
-        smp_local_timer_interrupt(regs);
+        smp_local_timer_interrupt();
         irq_exit();
+        set_irq_regs(old_regs);
 }
 
 /*
diff --git a/arch/x86_64/kernel/entry.S b/arch/x86_64/kernel/entry.S
index b8285cf1a9c3..38a7b2d528e2 100644
--- a/arch/x86_64/kernel/entry.S
+++ b/arch/x86_64/kernel/entry.S
@@ -535,6 +535,8 @@ END(stub_rt_sigreturn)
 1:      incl    %gs:pda_irqcount
         cmoveq %gs:pda_irqstackptr,%rsp
         push    %rbp                    # backlink for old unwinder
+        CFI_ADJUST_CFA_OFFSET 8
+        CFI_REL_OFFSET rbp,0
         /*
          * We entered an interrupt context - irqs are off:
          */
@@ -978,6 +980,11 @@ ENTRY(kernel_thread)
         call do_fork
         movq %rax,RAX(%rsp)
         xorl %edi,%edi
+        test %rax,%rax
+        jnz  1f
+        /* terminate stack in child */
+        movq %rdi,RIP(%rsp)
+1:
 
         /*
          * It isn't worth to check for reschedule here,
@@ -1169,6 +1176,7 @@ ENTRY(call_softirq)
         incl %gs:pda_irqcount
         cmove %gs:pda_irqstackptr,%rsp
         push  %rbp                      # backlink for old unwinder
+        CFI_ADJUST_CFA_OFFSET    8
         call __do_softirq
         leaveq
         CFI_DEF_CFA_REGISTER    rsp
diff --git a/arch/x86_64/kernel/genapic_cluster.c b/arch/x86_64/kernel/genapic_cluster.c
index cdb90e671b88..73d76308b955 100644
--- a/arch/x86_64/kernel/genapic_cluster.c
+++ b/arch/x86_64/kernel/genapic_cluster.c
@@ -63,6 +63,13 @@ static cpumask_t cluster_target_cpus(void)
         return cpumask_of_cpu(0);
 }
 
+static cpumask_t cluster_vector_allocation_domain(int cpu)
+{
+        cpumask_t domain = CPU_MASK_NONE;
+        cpu_set(cpu, domain);
+        return domain;
+}
+
 static void cluster_send_IPI_mask(cpumask_t mask, int vector)
 {
         send_IPI_mask_sequence(mask, vector);
@@ -119,6 +126,7 @@ struct genapic apic_cluster = {
         .int_delivery_mode = dest_Fixed,
         .int_dest_mode = (APIC_DEST_PHYSICAL != 0),
         .target_cpus = cluster_target_cpus,
+        .vector_allocation_domain = cluster_vector_allocation_domain,
         .apic_id_registered = cluster_apic_id_registered,
         .init_apic_ldr = cluster_init_apic_ldr,
         .send_IPI_all = cluster_send_IPI_all,
diff --git a/arch/x86_64/kernel/genapic_flat.c b/arch/x86_64/kernel/genapic_flat.c
index 50ad153eaac4..0dfc223c1839 100644
--- a/arch/x86_64/kernel/genapic_flat.c
+++ b/arch/x86_64/kernel/genapic_flat.c
@@ -22,6 +22,20 @@ static cpumask_t flat_target_cpus(void)
         return cpu_online_map;
 }
 
+static cpumask_t flat_vector_allocation_domain(int cpu)
+{
+        /* Careful. Some cpus do not strictly honor the set of cpus
+         * specified in the interrupt destination when using lowest
+         * priority interrupt delivery mode.
+         *
+         * In particular there was a hyperthreading cpu observed to
+         * deliver interrupts to the wrong hyperthread when only one
+         * hyperthread was specified in the interrupt desitination.
+         */
+        cpumask_t domain = { { [0] = APIC_ALL_CPUS, } };
+        return domain;
+}
+
 /*
  * Set up the logical destination ID.
  *
@@ -121,6 +135,7 @@ struct genapic apic_flat =  {
         .int_delivery_mode = dest_LowestPrio,
         .int_dest_mode = (APIC_DEST_LOGICAL != 0),
         .target_cpus = flat_target_cpus,
+        .vector_allocation_domain = flat_vector_allocation_domain,
         .apic_id_registered = flat_apic_id_registered,
         .init_apic_ldr = flat_init_apic_ldr,
         .send_IPI_all = flat_send_IPI_all,
@@ -141,6 +156,14 @@ static cpumask_t physflat_target_cpus(void)
         return cpumask_of_cpu(0);
 }
 
+static cpumask_t physflat_vector_allocation_domain(int cpu)
+{
+        cpumask_t domain = CPU_MASK_NONE;
+        cpu_set(cpu, domain);
+        return domain;
+}
+
+
 static void physflat_send_IPI_mask(cpumask_t cpumask, int vector)
 {
         send_IPI_mask_sequence(cpumask, vector);
@@ -179,6 +202,7 @@ struct genapic apic_physflat =  {
         .int_delivery_mode = dest_Fixed,
         .int_dest_mode = (APIC_DEST_PHYSICAL != 0),
         .target_cpus = physflat_target_cpus,
+        .vector_allocation_domain = physflat_vector_allocation_domain,
         .apic_id_registered = flat_apic_id_registered,
         .init_apic_ldr = flat_init_apic_ldr,/*not needed, but shouldn't hurt*/
         .send_IPI_all = physflat_send_IPI_all,
diff --git a/arch/x86_64/kernel/io_apic.c b/arch/x86_64/kernel/io_apic.c
index 91728d9d3472..771bcf77daf2 100644
--- a/arch/x86_64/kernel/io_apic.c
+++ b/arch/x86_64/kernel/io_apic.c
@@ -47,7 +47,7 @@
 #include <asm/msidef.h>
 #include <asm/hypertransport.h>
 
-static int assign_irq_vector(int irq, cpumask_t mask);
+static int assign_irq_vector(int irq, cpumask_t mask, cpumask_t *result);
 
 #define __apicdebuginit  __init
 
@@ -174,12 +174,10 @@ static void set_ioapic_affinity_irq(unsigned int irq, cpumask_t mask)
 
         cpus_and(mask, tmp, CPU_MASK_ALL);
 
-        vector = assign_irq_vector(irq, mask);
+        vector = assign_irq_vector(irq, mask, &tmp);
         if (vector < 0)
                 return;
 
-        cpus_clear(tmp);
-        cpu_set(vector >> 8, tmp);
         dest = cpu_mask_to_apicid(tmp);
 
         /*
@@ -188,7 +186,7 @@ static void set_ioapic_affinity_irq(unsigned int irq, cpumask_t mask)
         dest = SET_APIC_LOGICAL_ID(dest);
 
         spin_lock_irqsave(&ioapic_lock, flags);
-        __target_IO_APIC_irq(irq, dest, vector & 0xff);
+        __target_IO_APIC_irq(irq, dest, vector);
         set_native_irq_info(irq, mask);
         spin_unlock_irqrestore(&ioapic_lock, flags);
 }
@@ -563,9 +561,45 @@ static inline int IO_APIC_irq_trigger(int irq)
 }
 
 /* irq_vectors is indexed by the sum of all RTEs in all I/O APICs. */
-unsigned int irq_vector[NR_IRQ_VECTORS] __read_mostly = { FIRST_EXTERNAL_VECTOR, 0 };
+static u8 irq_vector[NR_IRQ_VECTORS] __read_mostly = {
+        [0] = FIRST_EXTERNAL_VECTOR + 0,
+        [1] = FIRST_EXTERNAL_VECTOR + 1,
+        [2] = FIRST_EXTERNAL_VECTOR + 2,
+        [3] = FIRST_EXTERNAL_VECTOR + 3,
+        [4] = FIRST_EXTERNAL_VECTOR + 4,
+        [5] = FIRST_EXTERNAL_VECTOR + 5,
+        [6] = FIRST_EXTERNAL_VECTOR + 6,
+        [7] = FIRST_EXTERNAL_VECTOR + 7,
+        [8] = FIRST_EXTERNAL_VECTOR + 8,
+        [9] = FIRST_EXTERNAL_VECTOR + 9,
+        [10] = FIRST_EXTERNAL_VECTOR + 10,
+        [11] = FIRST_EXTERNAL_VECTOR + 11,
+        [12] = FIRST_EXTERNAL_VECTOR + 12,
+        [13] = FIRST_EXTERNAL_VECTOR + 13,
+        [14] = FIRST_EXTERNAL_VECTOR + 14,
+        [15] = FIRST_EXTERNAL_VECTOR + 15,
+};
+
+static cpumask_t irq_domain[NR_IRQ_VECTORS] __read_mostly = {
+        [0] = CPU_MASK_ALL,
+        [1] = CPU_MASK_ALL,
+        [2] = CPU_MASK_ALL,
+        [3] = CPU_MASK_ALL,
+        [4] = CPU_MASK_ALL,
+        [5] = CPU_MASK_ALL,
+        [6] = CPU_MASK_ALL,
+        [7] = CPU_MASK_ALL,
+        [8] = CPU_MASK_ALL,
+        [9] = CPU_MASK_ALL,
+        [10] = CPU_MASK_ALL,
+        [11] = CPU_MASK_ALL,
+        [12] = CPU_MASK_ALL,
+        [13] = CPU_MASK_ALL,
+        [14] = CPU_MASK_ALL,
+        [15] = CPU_MASK_ALL,
+};
 
-static int __assign_irq_vector(int irq, cpumask_t mask)
+static int __assign_irq_vector(int irq, cpumask_t mask, cpumask_t *result)
 {
         /*
          * NOTE! The local APIC isn't very good at handling
@@ -587,16 +621,24 @@ static int __assign_irq_vector(int irq, cpumask_t mask)
 
         BUG_ON((unsigned)irq >= NR_IRQ_VECTORS);
 
-        if (IO_APIC_VECTOR(irq) > 0)
-                old_vector = IO_APIC_VECTOR(irq);
-        if ((old_vector > 0) && cpu_isset(old_vector >> 8, mask)) {
-                return old_vector;
+        if (irq_vector[irq] > 0)
+                old_vector = irq_vector[irq];
+        if (old_vector > 0) {
+                cpus_and(*result, irq_domain[irq], mask);
+                if (!cpus_empty(*result))
+                        return old_vector;
         }
 
         for_each_cpu_mask(cpu, mask) {
+                cpumask_t domain;
+                int first, new_cpu;
                 int vector, offset;
-                vector = pos[cpu].vector;
-                offset = pos[cpu].offset;
+
+                domain = vector_allocation_domain(cpu);
+                first = first_cpu(domain);
+
+                vector = pos[first].vector;
+                offset = pos[first].offset;
 next:
                 vector += 8;
                 if (vector >= FIRST_SYSTEM_VECTOR) {
@@ -604,35 +646,40 @@ next:
                         offset = (offset + 1) % 8;
                         vector = FIRST_DEVICE_VECTOR + offset;
                 }
-                if (unlikely(pos[cpu].vector == vector))
+                if (unlikely(pos[first].vector == vector))
                         continue;
                 if (vector == IA32_SYSCALL_VECTOR)
                         goto next;
-                if (per_cpu(vector_irq, cpu)[vector] != -1)
-                        goto next;
+                for_each_cpu_mask(new_cpu, domain)
+                        if (per_cpu(vector_irq, cpu)[vector] != -1)
+                                goto next;
                 /* Found one! */
-                pos[cpu].vector = vector;
-                pos[cpu].offset = offset;
+                for_each_cpu_mask(new_cpu, domain) {
+                        pos[cpu].vector = vector;
+                        pos[cpu].offset = offset;
+                }
                 if (old_vector >= 0) {
-                        int old_cpu = old_vector >> 8;
-                        old_vector &= 0xff;
-                        per_cpu(vector_irq, old_cpu)[old_vector] = -1;
+                        int old_cpu;
+                        for_each_cpu_mask(old_cpu, domain)
+                                per_cpu(vector_irq, old_cpu)[old_vector] = -1;
                 }
-                per_cpu(vector_irq, cpu)[vector] = irq;
-                vector |= cpu << 8;
-                IO_APIC_VECTOR(irq) = vector;
+                for_each_cpu_mask(new_cpu, domain)
+                        per_cpu(vector_irq, new_cpu)[vector] = irq;
+                irq_vector[irq] = vector;
+                irq_domain[irq] = domain;
+                cpus_and(*result, domain, mask);
                 return vector;
         }
         return -ENOSPC;
 }
 
-static int assign_irq_vector(int irq, cpumask_t mask)
+static int assign_irq_vector(int irq, cpumask_t mask, cpumask_t *result)
 {
         int vector;
         unsigned long flags;
 
         spin_lock_irqsave(&vector_lock, flags);
-        vector = __assign_irq_vector(irq, mask);
+        vector = __assign_irq_vector(irq, mask, result);
         spin_unlock_irqrestore(&vector_lock, flags);
         return vector;
 }
@@ -704,14 +751,12 @@ static void __init setup_IO_APIC_irqs(void)
 
                 if (IO_APIC_IRQ(irq)) {
                         cpumask_t mask;
-                        vector = assign_irq_vector(irq, TARGET_CPUS);
+                        vector = assign_irq_vector(irq, TARGET_CPUS, &mask);
                         if (vector < 0)
                                 continue;
 
-                        cpus_clear(mask);
-                        cpu_set(vector >> 8, mask);
                         entry.dest.logical.logical_dest = cpu_mask_to_apicid(mask);
-                        entry.vector = vector & 0xff;
+                        entry.vector = vector;
 
                         ioapic_register_intr(irq, vector, IOAPIC_AUTO);
                         if (!apic && (irq < 16))
@@ -1289,7 +1334,7 @@ static inline void init_IO_APIC_traps(void)
          */
         for (irq = 0; irq < NR_IRQS ; irq++) {
                 int tmp = irq;
-                if (IO_APIC_IRQ(tmp) && !IO_APIC_VECTOR(tmp)) {
+                if (IO_APIC_IRQ(tmp) && !irq_vector[tmp]) {
                         /*
                          * Hmm.. We don't have an entry for this,
                          * so default to an old-fashioned 8259
@@ -1430,12 +1475,13 @@ static inline void check_timer(void)
 {
         int apic1, pin1, apic2, pin2;
         int vector;
+        cpumask_t mask;
 
         /*
          * get/set the timer IRQ vector:
          */
         disable_8259A_irq(0);
-        vector = assign_irq_vector(0, TARGET_CPUS);
+        vector = assign_irq_vector(0, TARGET_CPUS, &mask);
 
         /*
          * Subtle, code in do_timer_interrupt() expects an AEOI
@@ -1667,6 +1713,7 @@ int create_irq(void)
         int new;
         int vector = 0;
         unsigned long flags;
+        cpumask_t mask;
 
         irq = -ENOSPC;
         spin_lock_irqsave(&vector_lock, flags);
@@ -1675,7 +1722,7 @@ int create_irq(void)
                         continue;
                 if (irq_vector[new] != 0)
                         continue;
-                vector = __assign_irq_vector(new, TARGET_CPUS);
+                vector = __assign_irq_vector(new, TARGET_CPUS, &mask);
                 if (likely(vector > 0))
                         irq = new;
                 break;
@@ -1707,13 +1754,10 @@ static int msi_compose_msg(struct pci_dev *pdev, unsigned int irq, struct msi_ms
 {
         int vector;
         unsigned dest;
+        cpumask_t tmp;
 
-        vector = assign_irq_vector(irq, TARGET_CPUS);
+        vector = assign_irq_vector(irq, TARGET_CPUS, &tmp);
         if (vector >= 0) {
-                cpumask_t tmp;
-
-                cpus_clear(tmp);
-                cpu_set(vector >> 8, tmp);
                 dest = cpu_mask_to_apicid(tmp);
 
                 msg->address_hi = MSI_ADDR_BASE_HI;
@@ -1752,12 +1796,10 @@ static void set_msi_irq_affinity(unsigned int irq, cpumask_t mask)
 
         cpus_and(mask, tmp, CPU_MASK_ALL);
 
-        vector = assign_irq_vector(irq, mask);
+        vector = assign_irq_vector(irq, mask, &tmp);
         if (vector < 0)
                 return;
 
-        cpus_clear(tmp);
-        cpu_set(vector >> 8, tmp);
         dest = cpu_mask_to_apicid(tmp);
 
         read_msi_msg(irq, &msg);
@@ -1844,12 +1886,10 @@ static void set_ht_irq_affinity(unsigned int irq, cpumask_t mask)
 
         cpus_and(mask, tmp, CPU_MASK_ALL);
 
-        vector = assign_irq_vector(irq, mask);
+        vector = assign_irq_vector(irq, mask, &tmp);
         if (vector < 0)
                 return;
 
-        cpus_clear(tmp);
-        cpu_set(vector >> 8, tmp);
         dest = cpu_mask_to_apicid(tmp);
 
         target_ht_irq(irq, dest, vector & 0xff);
@@ -1871,15 +1911,13 @@ static struct hw_interrupt_type ht_irq_chip = {
 int arch_setup_ht_irq(unsigned int irq, struct pci_dev *dev)
 {
         int vector;
+        cpumask_t tmp;
 
-        vector = assign_irq_vector(irq, TARGET_CPUS);
+        vector = assign_irq_vector(irq, TARGET_CPUS, &tmp);
         if (vector >= 0) {
                 u32 low, high;
                 unsigned dest;
-                cpumask_t tmp;
 
-                cpus_clear(tmp);
-                cpu_set(vector >> 8, tmp);
                 dest = cpu_mask_to_apicid(tmp);
 
                 high =  HT_IRQ_HIGH_DEST_ID(dest);
@@ -1945,13 +1983,10 @@ int io_apic_set_pci_routing (int ioapic, int pin, int irq, int triggering, int p
                 add_pin_to_irq(irq, ioapic, pin);
 
 
-        vector = assign_irq_vector(irq, TARGET_CPUS);
+        vector = assign_irq_vector(irq, TARGET_CPUS, &mask);
         if (vector < 0)
                 return vector;
 
-        cpus_clear(mask);
-        cpu_set(vector >> 8, mask);
-
         /*
          * Generate a PCI IRQ routing entry and program the IOAPIC accordingly.
          * Note that we mask (disable) IRQs now -- these get enabled when the
diff --git a/arch/x86_64/kernel/irq.c b/arch/x86_64/kernel/irq.c
index 506f27c85ca5..dff68eb2b787 100644
--- a/arch/x86_64/kernel/irq.c
+++ b/arch/x86_64/kernel/irq.c
@@ -103,7 +103,9 @@ skip:
  * handlers).
  */
 asmlinkage unsigned int do_IRQ(struct pt_regs *regs)
-{       
+{
+        struct pt_regs *old_regs = set_irq_regs(regs);
+
         /* high bit used in ret_from_ code  */
         unsigned vector = ~regs->orig_rax;
         unsigned irq;
@@ -112,18 +114,19 @@ asmlinkage unsigned int do_IRQ(struct pt_regs *regs)
         irq_enter();
         irq = __get_cpu_var(vector_irq)[vector];
 
-        if (unlikely(irq >= NR_IRQS)) {
-                printk(KERN_EMERG "%s: cannot handle IRQ %d\n",
-                                        __FUNCTION__, irq);
-                BUG();
-        }
-
 #ifdef CONFIG_DEBUG_STACKOVERFLOW
         stack_overflow_check(regs);
 #endif
-        generic_handle_irq(irq, regs);
+
+        if (likely(irq < NR_IRQS))
+                generic_handle_irq(irq);
+        else
+                printk(KERN_EMERG "%s: %d.%d No irq handler for vector\n",
+                        __func__, smp_processor_id(), vector);
+
         irq_exit();
 
+        set_irq_regs(old_regs);
         return 1;
 }
 
diff --git a/arch/x86_64/kernel/pci-calgary.c b/arch/x86_64/kernel/pci-calgary.c
index f760045d6d35..b3296cc2f2f2 100644
--- a/arch/x86_64/kernel/pci-calgary.c
+++ b/arch/x86_64/kernel/pci-calgary.c
@@ -2,8 +2,9 @@
  * Derived from arch/powerpc/kernel/iommu.c
  *
  * Copyright (C) IBM Corporation, 2006
+ * Copyright (C) 2006  Jon Mason <jdmason@kudzu.us>
  *
- * Author: Jon Mason <jdmason@us.ibm.com>
+ * Author: Jon Mason <jdmason@kudzu.us>
  * Author: Muli Ben-Yehuda <muli@il.ibm.com>
 
  * This program is free software; you can redistribute it and/or modify
@@ -714,7 +715,7 @@ static void calgary_watchdog(unsigned long data)
 
         /* If no error, the agent ID in the CSR is not valid */
         if (val32 & CSR_AGENT_MASK) {
-                printk(KERN_EMERG "calgary_watchdog: DMA error on bus %d, "
+                printk(KERN_EMERG "calgary_watchdog: DMA error on PHB %#x, "
                                   "CSR = %#x\n", dev->bus->number, val32);
                 writel(0, target);
 
@@ -748,7 +749,7 @@ static void __init calgary_enable_translation(struct pci_dev *dev)
         val32 = be32_to_cpu(readl(target));
         val32 |= PHB_TCE_ENABLE | PHB_DAC_DISABLE | PHB_MCSR_ENABLE;
 
-        printk(KERN_INFO "Calgary: enabling translation on PHB %d\n", busnum);
+        printk(KERN_INFO "Calgary: enabling translation on PHB %#x\n", busnum);
         printk(KERN_INFO "Calgary: errant DMAs will now be prevented on this "
                "bus.\n");
 
@@ -778,7 +779,7 @@ static void __init calgary_disable_translation(struct pci_dev *dev)
         val32 = be32_to_cpu(readl(target));
         val32 &= ~(PHB_TCE_ENABLE | PHB_DAC_DISABLE | PHB_MCSR_ENABLE);
 
-        printk(KERN_INFO "Calgary: disabling translation on PHB %d!\n", busnum);
+        printk(KERN_INFO "Calgary: disabling translation on PHB %#x!\n", busnum);
         writel(cpu_to_be32(val32), target);
         readl(target); /* flush */
 
@@ -790,7 +791,16 @@ static inline unsigned int __init locate_register_space(struct pci_dev *dev)
         int rionodeid;
         u32 address;
 
-        rionodeid = (dev->bus->number % 15 > 4) ? 3 : 2;
+        /*
+         * Each Calgary has four busses. The first four busses (first Calgary)
+         * have RIO node ID 2, then the next four (second Calgary) have RIO
+         * node ID 3, the next four (third Calgary) have node ID 2 again, etc.
+         * We use a gross hack - relying on the dev->bus->number ordering,
+         * modulo 14 - to decide which Calgary a given bus is on. Busses 0, 1,
+         * 2 and 4 are on the first Calgary (id 2), 6, 8, a and c are on the
+         * second (id 3), and then it repeats modulo 14.
+         */
+        rionodeid = (dev->bus->number % 14 > 4) ? 3 : 2;
         /*
          * register space address calculation as follows:
          * FE0MB-8MB*OneBasedChassisNumber+1MB*(RioNodeId-ChassisBase)
@@ -798,7 +808,7 @@ static inline unsigned int __init locate_register_space(struct pci_dev *dev)
          * RioNodeId is 2 for first Calgary, 3 for second Calgary
          */
         address = START_ADDRESS -
-                (0x800000 * (ONE_BASED_CHASSIS_NUM + dev->bus->number / 15)) +
+                (0x800000 * (ONE_BASED_CHASSIS_NUM + dev->bus->number / 14)) +
                 (0x100000) * (rionodeid - CHASSIS_BASE);
         return address;
 }
@@ -816,6 +826,8 @@ static int __init calgary_init_one(struct pci_dev *dev)
         void __iomem *bbar;
         int ret;
 
+        BUG_ON(dev->bus->number >= MAX_PHB_BUS_NUM);
+
         address = locate_register_space(dev);
         /* map entire 1MB of Calgary config space */
         bbar = ioremap_nocache(address, 1024 * 1024);
@@ -842,10 +854,10 @@ done:
 
 static int __init calgary_init(void)
 {
-        int i, ret = -ENODEV;
+        int ret = -ENODEV;
         struct pci_dev *dev = NULL;
 
-        for (i = 0; i < MAX_PHB_BUS_NUM; i++) {
+        do {
                 dev = pci_get_device(PCI_VENDOR_ID_IBM,
                                      PCI_DEVICE_ID_IBM_CALGARY,
                                      dev);
@@ -861,12 +873,12 @@ static int __init calgary_init(void)
                 ret = calgary_init_one(dev);
                 if (ret)
                         goto error;
-        }
+        } while (1);
 
         return ret;
 
 error:
-        for (i--; i >= 0; i--) {
+        do {
                 dev = pci_find_device_reverse(PCI_VENDOR_ID_IBM,
                                               PCI_DEVICE_ID_IBM_CALGARY,
                                               dev);
@@ -882,7 +894,7 @@ error:
                 calgary_disable_translation(dev);
                 calgary_free_bus(dev);
                 pci_dev_put(dev); /* Undo calgary_init_one()'s pci_dev_get() */
-        }
+        } while (1);
 
         return ret;
 }
@@ -1052,7 +1064,7 @@ static int __init calgary_parse_options(char *p)
 
                         if (bridge < MAX_PHB_BUS_NUM) {
                                 printk(KERN_INFO "Calgary: disabling "
-                                       "translation for PHB 0x%x\n", bridge);
+                                       "translation for PHB %#x\n", bridge);
                                 bus_info[bridge].translation_disabled = 1;
                         }
                 }
diff --git a/arch/x86_64/kernel/process.c b/arch/x86_64/kernel/process.c
index de10cb8a2c97..5e95b257ee26 100644
--- a/arch/x86_64/kernel/process.c
+++ b/arch/x86_64/kernel/process.c
@@ -615,6 +615,9 @@ __switch_to(struct task_struct *prev_p, struct task_struct *next_p)
                 prev->gsindex = gsindex;
         }
 
+        /* Must be after DS reload */
+        unlazy_fpu(prev_p);
+
         /* 
          * Switch the PDA and FPU contexts.
          */
@@ -622,10 +625,6 @@ __switch_to(struct task_struct *prev_p, struct task_struct *next_p)
         write_pda(oldrsp, next->userrsp); 
         write_pda(pcurrent, next_p); 
 
-        /* This must be here to ensure both math_state_restore() and
-           kernel_fpu_begin() work consistently. 
-           And the AMD workaround requires it to be after DS reload. */
-        unlazy_fpu(prev_p);
         write_pda(kernelstack,
         (unsigned long)task_stack_page(next_p) + THREAD_SIZE - PDA_STACKOFFSET);
 #ifdef CONFIG_CC_STACKPROTECTOR
diff --git a/arch/x86_64/kernel/time.c b/arch/x86_64/kernel/time.c
index 557e92af7bea..1ba5a442ac32 100644
--- a/arch/x86_64/kernel/time.c
+++ b/arch/x86_64/kernel/time.c
@@ -302,20 +302,20 @@ unsigned long long monotonic_clock(void)
 }
 EXPORT_SYMBOL(monotonic_clock);
 
-static noinline void handle_lost_ticks(int lost, struct pt_regs *regs)
+static noinline void handle_lost_ticks(int lost)
 {
         static long lost_count;
         static int warned;
         if (report_lost_ticks) {
                 printk(KERN_WARNING "time.c: Lost %d timer tick(s)! ", lost);
-                print_symbol("rip %s)\n", regs->rip);
+                print_symbol("rip %s)\n", get_irq_regs()->rip);
         }
 
         if (lost_count == 1000 && !warned) {
                 printk(KERN_WARNING "warning: many lost ticks.\n"
                        KERN_WARNING "Your time source seems to be instable or "
                                 "some driver is hogging interupts\n");
-                print_symbol("rip %s\n", regs->rip);
+                print_symbol("rip %s\n", get_irq_regs()->rip);
                 if (vxtime.mode == VXTIME_TSC && vxtime.hpet_address) {
                         printk(KERN_WARNING "Falling back to HPET\n");
                         if (hpet_use_timer)
@@ -339,7 +339,7 @@ static noinline void handle_lost_ticks(int lost, struct pt_regs *regs)
 #endif
 }
 
-void main_timer_handler(struct pt_regs *regs)
+void main_timer_handler(void)
 {
         static unsigned long rtc_update = 0;
         unsigned long tsc;
@@ -411,7 +411,7 @@ void main_timer_handler(struct pt_regs *regs)
         }
 
         if (lost > 0)
-                handle_lost_ticks(lost, regs);
+                handle_lost_ticks(lost);
         else
                 lost = 0;
 
@@ -421,7 +421,7 @@ void main_timer_handler(struct pt_regs *regs)
 
         do_timer(lost + 1);
 #ifndef CONFIG_SMP
-        update_process_times(user_mode(regs));
+        update_process_times(user_mode(get_irq_regs()));
 #endif
 
 /*
@@ -431,7 +431,7 @@ void main_timer_handler(struct pt_regs *regs)
  */
 
         if (!using_apic_timer)
-                smp_local_timer_interrupt(regs);
+                smp_local_timer_interrupt();
 
 /*
  * If we have an externally synchronized Linux clock, then update CMOS clock
@@ -450,11 +450,11 @@ void main_timer_handler(struct pt_regs *regs)
         write_sequnlock(&xtime_lock);
 }
 
-static irqreturn_t timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+static irqreturn_t timer_interrupt(int irq, void *dev_id)
 {
         if (apic_runs_main_timer > 1)
                 return IRQ_HANDLED;
-        main_timer_handler(regs);
+        main_timer_handler();
         if (using_apic_timer)
                 smp_send_timer_broadcast_ipi();
         return IRQ_HANDLED;
@@ -1337,7 +1337,7 @@ irqreturn_t hpet_rtc_interrupt(int irq, void *dev_id, struct pt_regs *regs)
         }
         if (call_rtc_interrupt) {
                 rtc_int_flag |= (RTC_IRQF | (RTC_NUM_INTS << 8));
-                rtc_interrupt(rtc_int_flag, dev_id, regs);
+                rtc_interrupt(rtc_int_flag, dev_id);
         }
         return IRQ_HANDLED;
 }
diff --git a/arch/x86_64/kernel/traps.c b/arch/x86_64/kernel/traps.c
index 01f2a8d254c2..7819022a8db5 100644
--- a/arch/x86_64/kernel/traps.c
+++ b/arch/x86_64/kernel/traps.c
@@ -23,6 +23,7 @@
 #include <linux/delay.h>
 #include <linux/spinlock.h>
 #include <linux/interrupt.h>
+#include <linux/kallsyms.h>
 #include <linux/module.h>
 #include <linux/moduleparam.h>
 #include <linux/nmi.h>
@@ -115,7 +116,6 @@ static int call_trace = 1;
 #endif
 
 #ifdef CONFIG_KALLSYMS
-# include <linux/kallsyms.h>
 void printk_address(unsigned long address)
 {
         unsigned long offset = 0, symsize;