29 files changed, 116 insertions, 65 deletions

diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
index 03e37af315d7..0453dcc757b4 100644
--- a/arch/arm/kernel/setup.c
+++ b/arch/arm/kernel/setup.c
@@ -839,8 +839,11 @@ static int __init topology_init(void)
 {
         int cpu;
 
-        for_each_possible_cpu(cpu)
-                register_cpu(&per_cpu(cpu_data, cpu).cpu, cpu);
+        for_each_possible_cpu(cpu) {
+                struct cpuinfo_arm *cpuinfo = &per_cpu(cpu_data, cpu);
+                cpuinfo->cpu.hotpluggable = 1;
+                register_cpu(&cpuinfo->cpu, cpu);
+        }
 
         return 0;
 }
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 5f29018a6533..656f0ca52782 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -542,6 +542,8 @@ config QEMU
         select SYS_SUPPORTS_LITTLE_ENDIAN
         select ARCH_SPARSEMEM_ENABLE
         select GENERIC_HARDIRQS_NO__DO_IRQ
+        select NR_CPUS_DEFAULT_1
+        select SYS_SUPPORTS_SMP
         help
           Qemu is a software emulator which among other architectures also
           can simulate a MIPS32 4Kc system.  This patch adds support for the
@@ -1805,6 +1807,9 @@ config SMP
 config SYS_SUPPORTS_SMP
         bool
 
+config NR_CPUS_DEFAULT_1
+        bool
+
 config NR_CPUS_DEFAULT_2
         bool
 
@@ -1825,8 +1830,9 @@ config NR_CPUS_DEFAULT_64
 
 config NR_CPUS
         int "Maximum number of CPUs (2-64)"
-        range 2 64
+        range 1 64 if NR_CPUS_DEFAULT_1
         depends on SMP
+        default "1" if NR_CPUS_DEFAULT_1
         default "2" if NR_CPUS_DEFAULT_2
         default "4" if NR_CPUS_DEFAULT_4
         default "8" if NR_CPUS_DEFAULT_8
@@ -1837,10 +1843,13 @@ config NR_CPUS
           This allows you to specify the maximum number of CPUs which this
           kernel will support.  The maximum supported value is 32 for 32-bit
           kernel and 64 for 64-bit kernels; the minimum value which makes
-          sense is 2.
+          sense is 1 for Qemu (useful only for kernel debugging purposes)
+          and 2 for all others.
 
           This is purely to save memory - each supported CPU adds
-          approximately eight kilobytes to the kernel image.
+          approximately eight kilobytes to the kernel image.  For best
+          performance should round up your number of processors to the next
+          power of two.
 
 #
 # Timer Interrupt Frequency Configuration
diff --git a/arch/mips/ddb5xxx/ddb5477/irq.c b/arch/mips/ddb5xxx/ddb5477/irq.c
index 2b23234a5b95..faa4a506bf82 100644
--- a/arch/mips/ddb5xxx/ddb5477/irq.c
+++ b/arch/mips/ddb5xxx/ddb5477/irq.c
@@ -194,7 +194,7 @@ static void vrc5477_irq_dispatch(void)
 
 asmlinkage void plat_irq_dispatch(void)
 {
-        unsigned int pending = read_c0_cause() & read_c0_status();
+        unsigned int pending = read_c0_cause() & read_c0_status() & ST0_IM;
 
         if (pending & STATUSF_IP7)
                 do_IRQ(CPU_IRQ_BASE + 7);
diff --git a/arch/mips/emma2rh/markeins/irq.c b/arch/mips/emma2rh/markeins/irq.c
index e26630026375..6bcf6a06367a 100644
--- a/arch/mips/emma2rh/markeins/irq.c
+++ b/arch/mips/emma2rh/markeins/irq.c
@@ -115,7 +115,7 @@ void __init arch_init_irq(void)
 
 asmlinkage void plat_irq_dispatch(void)
 {
-        unsigned int pending = read_c0_status() & read_c0_cause();
+        unsigned int pending = read_c0_status() & read_c0_cause() & ST0_IM;
 
         if (pending & STATUSF_IP7)
                 do_IRQ(CPU_IRQ_BASE + 7);
diff --git a/arch/mips/gt64120/ev64120/irq.c b/arch/mips/gt64120/ev64120/irq.c
index 04572b9c9642..64e4c80b6139 100644
--- a/arch/mips/gt64120/ev64120/irq.c
+++ b/arch/mips/gt64120/ev64120/irq.c
@@ -48,7 +48,7 @@
 
 asmlinkage void plat_irq_dispatch(void)
 {
-        unsigned int pending = read_c0_status() & read_c0_cause();
+        unsigned int pending = read_c0_status() & read_c0_cause() & ST0_IM;
 
         if (pending & STATUSF_IP4)              /* int2 hardware line (timer) */
                 do_IRQ(4);
diff --git a/arch/mips/gt64120/wrppmc/irq.c b/arch/mips/gt64120/wrppmc/irq.c
index d3d96591780e..06177bf5b1d6 100644
--- a/arch/mips/gt64120/wrppmc/irq.c
+++ b/arch/mips/gt64120/wrppmc/irq.c
@@ -32,7 +32,7 @@
 
 asmlinkage void plat_irq_dispatch(void)
 {
-        unsigned int pending = read_c0_status() & read_c0_cause();
+        unsigned int pending = read_c0_status() & read_c0_cause() & ST0_IM;
 
         if (pending & STATUSF_IP7)
                 do_IRQ(WRPPMC_MIPS_TIMER_IRQ);  /* CPU Compare/Count internal timer */
diff --git a/arch/mips/jazz/irq.c b/arch/mips/jazz/irq.c
index 295892e4ce53..015cf4bb51dd 100644
--- a/arch/mips/jazz/irq.c
+++ b/arch/mips/jazz/irq.c
@@ -122,7 +122,7 @@ static void ll_local_dev(void)
 
 asmlinkage void plat_irq_dispatch(void)
 {
-        unsigned int pending = read_c0_cause() & read_c0_status() & ST0_IM;
+        unsigned int pending = read_c0_cause() & read_c0_status();
 
         if (pending & IE_IRQ5)
                 write_c0_compare(0);
diff --git a/arch/mips/kernel/genex.S b/arch/mips/kernel/genex.S
index aacd4a005c5f..83843a229be7 100644
--- a/arch/mips/kernel/genex.S
+++ b/arch/mips/kernel/genex.S
@@ -181,13 +181,13 @@ NESTED(except_vec_vi, 0, sp)
          * during service by SMTC kernel, we also want to
          * pass the IM value to be cleared.
          */
-EXPORT(except_vec_vi_mori)
+FEXPORT(except_vec_vi_mori)
         ori     a0, $0, 0
 #endif /* CONFIG_MIPS_MT_SMTC */
-EXPORT(except_vec_vi_lui)
+FEXPORT(except_vec_vi_lui)
         lui     v0, 0           /* Patched */
         j       except_vec_vi_handler
-EXPORT(except_vec_vi_ori)
+FEXPORT(except_vec_vi_ori)
          ori    v0, 0           /* Patched */
         .set    pop
         END(except_vec_vi)
@@ -220,7 +220,17 @@ NESTED(except_vec_vi_handler, 0, sp)
         _ehb
 #endif /* CONFIG_MIPS_MT_SMTC */
         CLI
+#ifdef CONFIG_TRACE_IRQFLAGS
+        move    s0, v0
+#ifdef CONFIG_MIPS_MT_SMTC
+        move    s1, a0
+#endif
         TRACE_IRQS_OFF
+#ifdef CONFIG_MIPS_MT_SMTC
+        move    a0, s1
+#endif
+        move    v0, s0
+#endif
 
         LONG_L  s0, TI_REGS($28)
         LONG_S  sp, TI_REGS($28)
diff --git a/arch/mips/mips-boards/generic/init.c b/arch/mips/mips-boards/generic/init.c
index 1acdf091c258..88e9c2a7a2f9 100644
--- a/arch/mips/mips-boards/generic/init.c
+++ b/arch/mips/mips-boards/generic/init.c
@@ -145,7 +145,7 @@ static void __init console_config(void)
         char parity = '\0', bits = '\0', flow = '\0';
         char *s;
 
-        if ((strstr(prom_getcmdline(), "console=ttyS")) == NULL) {
+        if ((strstr(prom_getcmdline(), "console=")) == NULL) {
                 s = prom_getenv("modetty0");
                 if (s) {
                         while (*s >= '0' && *s <= '9')
diff --git a/arch/mips/momentum/ocelot_c/irq.c b/arch/mips/momentum/ocelot_c/irq.c
index 40472f7944d7..844d566c9de3 100644
--- a/arch/mips/momentum/ocelot_c/irq.c
+++ b/arch/mips/momentum/ocelot_c/irq.c
@@ -64,7 +64,7 @@ extern void ll_cpci_irq(void);
 
 asmlinkage void plat_irq_dispatch(void)
 {
-        unsigned int pending = read_c0_cause() & read_c0_status();
+        unsigned int pending = read_c0_cause() & read_c0_status() & ST0_IM;
 
         if (pending & STATUSF_IP0)
                 do_IRQ(0);
diff --git a/arch/mips/philips/pnx8550/common/int.c b/arch/mips/philips/pnx8550/common/int.c
index b1c4805a0b92..aad03429a5e3 100644
--- a/arch/mips/philips/pnx8550/common/int.c
+++ b/arch/mips/philips/pnx8550/common/int.c
@@ -83,16 +83,15 @@ static void timer_irqdispatch(int irq)
 
 asmlinkage void plat_irq_dispatch(void)
 {
-        unsigned int pending = read_c0_status() & read_c0_cause();
+        unsigned int pending = read_c0_status() & read_c0_cause() & ST0_IM;
 
         if (pending & STATUSF_IP2)
                 hw0_irqdispatch(2);
         else if (pending & STATUSF_IP7) {
                 if (read_c0_config7() & 0x01c0)
                         timer_irqdispatch(7);
-        }
-
-        spurious_interrupt();
+        } else
+                spurious_interrupt();
 }
 
 static inline void modify_cp0_intmask(unsigned clr_mask, unsigned set_mask)
diff --git a/arch/mips/qemu/q-smp.c b/arch/mips/qemu/q-smp.c
index 5a12354cd576..786bbfa214d1 100644
--- a/arch/mips/qemu/q-smp.c
+++ b/arch/mips/qemu/q-smp.c
@@ -46,3 +46,10 @@ void __init prom_prepare_cpus(unsigned int max_cpus)
 void prom_boot_secondary(int cpu, struct task_struct *idle)
 {
 }
+
+void __init plat_smp_setup(void)
+{
+}
+void __init plat_prepare_cpus(unsigned int max_cpus)
+{
+}
diff --git a/arch/mips/sgi-ip22/ip22-int.c b/arch/mips/sgi-ip22/ip22-int.c
index b454924aeb56..18348321795d 100644
--- a/arch/mips/sgi-ip22/ip22-int.c
+++ b/arch/mips/sgi-ip22/ip22-int.c
@@ -237,7 +237,7 @@ extern void indy_8254timer_irq(void);
 
 asmlinkage void plat_irq_dispatch(void)
 {
-        unsigned int pending = read_c0_cause();
+        unsigned int pending = read_c0_status() & read_c0_cause();
 
         /*
          * First we check for r4k counter/timer IRQ.
diff --git a/arch/mips/sgi-ip32/ip32-irq.c b/arch/mips/sgi-ip32/ip32-irq.c
index 8c450d9e8696..fb9da9acf53f 100644
--- a/arch/mips/sgi-ip32/ip32-irq.c
+++ b/arch/mips/sgi-ip32/ip32-irq.c
@@ -454,7 +454,7 @@ static void ip32_irq5(void)
 
 asmlinkage void plat_irq_dispatch(void)
 {
-        unsigned int pending = read_c0_cause();
+        unsigned int pending = read_c0_status() & read_c0_cause();
 
         if (likely(pending & IE_IRQ0))
                 ip32_irq0();
diff --git a/arch/mips/sibyte/sb1250/irq.c b/arch/mips/sibyte/sb1250/irq.c
index 148239446e6e..0e6a13c0bd0e 100644
--- a/arch/mips/sibyte/sb1250/irq.c
+++ b/arch/mips/sibyte/sb1250/irq.c
@@ -421,7 +421,7 @@ asmlinkage void plat_irq_dispatch(void)
          * blasting the high 32 bits.
          */
 
-        pending = read_c0_cause() & read_c0_status();
+        pending = read_c0_cause() & read_c0_status() & ST0_IM;
 
 #ifdef CONFIG_SIBYTE_SB1250_PROF
         if (pending & CAUSEF_IP7) /* Cpu performance counter interrupt */
diff --git a/arch/mips/sni/pcimt.c b/arch/mips/sni/pcimt.c
index 39e5b4abc555..8e8593b64f6a 100644
--- a/arch/mips/sni/pcimt.c
+++ b/arch/mips/sni/pcimt.c
@@ -333,7 +333,7 @@ static void pcimt_hwint3(void)
 
 static void sni_pcimt_hwint(void)
 {
-        u32 pending = (read_c0_cause() & read_c0_status());
+        u32 pending = read_c0_cause() & read_c0_status();
 
         if (pending & C_IRQ5)
                 do_IRQ (MIPS_CPU_IRQ_BASE + 7);
diff --git a/arch/mips/sni/pcit.c b/arch/mips/sni/pcit.c
index 8d6b3d5b13a1..1dfc3f00bbd3 100644
--- a/arch/mips/sni/pcit.c
+++ b/arch/mips/sni/pcit.c
@@ -271,7 +271,7 @@ static void pcit_hwint0(void)
 
 static void sni_pcit_hwint(void)
 {
-        u32 pending = (read_c0_cause() & read_c0_status());
+        u32 pending = read_c0_cause() & read_c0_status();
 
         if (pending & C_IRQ1)
                 pcit_hwint1();
@@ -285,7 +285,7 @@ static void sni_pcit_hwint(void)
 
 static void sni_pcit_hwint_cplus(void)
 {
-        u32 pending = (read_c0_cause() & read_c0_status());
+        u32 pending = read_c0_cause() & read_c0_status();
 
         if (pending & C_IRQ0)
                 pcit_hwint0();
diff --git a/arch/mips/tx4927/common/tx4927_irq.c b/arch/mips/tx4927/common/tx4927_irq.c
index e7f3e5b84dcf..3d25d010f3d5 100644
--- a/arch/mips/tx4927/common/tx4927_irq.c
+++ b/arch/mips/tx4927/common/tx4927_irq.c
@@ -416,7 +416,7 @@ static int tx4927_irq_nested(void)
 
 asmlinkage void plat_irq_dispatch(void)
 {
-        unsigned int pending = read_c0_status() & read_c0_cause();
+        unsigned int pending = read_c0_status() & read_c0_cause() & ST0_IM;
 
         if (pending & STATUSF_IP7)                      /* cpu timer */
                 do_IRQ(TX4927_IRQ_CPU_TIMER);
diff --git a/arch/s390/kernel/compat_wrapper.S b/arch/s390/kernel/compat_wrapper.S
index 97901296894e..32a69a18a796 100644
--- a/arch/s390/kernel/compat_wrapper.S
+++ b/arch/s390/kernel/compat_wrapper.S
@@ -1665,3 +1665,20 @@ sys_getcpu_wrapper:
         llgtr   %r3,%r3                 # unsigned *
         llgtr   %r4,%r4                 # struct getcpu_cache *
         jg      sys_getcpu
+
+        .globl  compat_sys_epoll_pwait_wrapper
+compat_sys_epoll_pwait_wrapper:
+        lgfr    %r2,%r2                 # int
+        llgtr   %r3,%r3                 # struct compat_epoll_event *
+        lgfr    %r4,%r4                 # int
+        lgfr    %r5,%r5                 # int
+        llgtr   %r6,%r6                 # compat_sigset_t *
+        llgf    %r0,164(%r15)           # compat_size_t
+        stg     %r0,160(%r15)
+        jg      compat_sys_epoll_pwait
+
+        .globl  compat_sys_utimes_wrapper
+compat_sys_utimes_wrapper:
+        llgtr   %r2,%r2                 # char *
+        llgtr   %r3,%r3                 # struct compat_timeval *
+        jg      compat_sys_utimes
diff --git a/arch/s390/kernel/debug.c b/arch/s390/kernel/debug.c
index eca3fe595ff4..dca6eaf82c80 100644
--- a/arch/s390/kernel/debug.c
+++ b/arch/s390/kernel/debug.c
@@ -268,7 +268,7 @@ debug_info_alloc(char *name, int pages_per_area, int nr_areas, int buf_size,
         rc->level          = level;
         rc->buf_size       = buf_size;
         rc->entry_size     = sizeof(debug_entry_t) + buf_size;
-        strlcpy(rc->name, name, sizeof(rc->name)-1);
+        strlcpy(rc->name, name, sizeof(rc->name));
         memset(rc->views, 0, DEBUG_MAX_VIEWS * sizeof(struct debug_view *));
         memset(rc->debugfs_entries, 0 ,DEBUG_MAX_VIEWS *
                 sizeof(struct dentry*));
diff --git a/arch/s390/kernel/early.c b/arch/s390/kernel/early.c
index afca1c6f4d21..5e47936573f2 100644
--- a/arch/s390/kernel/early.c
+++ b/arch/s390/kernel/early.c
@@ -141,9 +141,9 @@ static noinline __init void detect_machine_type(void)
                 machine_flags |= 4;
 }
 
+#ifdef CONFIG_64BIT
 static noinline __init int memory_fast_detect(void)
 {
-
         unsigned long val0 = 0;
         unsigned long val1 = 0xc;
         int ret = -ENOSYS;
@@ -161,9 +161,15 @@ static noinline __init int memory_fast_detect(void)
         if (ret || val0 != val1)
                 return -ENOSYS;
 
-        memory_chunk[0].size = val0;
+        memory_chunk[0].size = val0 + 1;
         return 0;
 }
+#else
+static inline int memory_fast_detect(void)
+{
+        return -ENOSYS;
+}
+#endif
 
 #define ADDR2G  (1UL << 31)
 
diff --git a/arch/s390/kernel/ipl.c b/arch/s390/kernel/ipl.c
index d125a4ead08d..f731185bf2bd 100644
--- a/arch/s390/kernel/ipl.c
+++ b/arch/s390/kernel/ipl.c
@@ -839,7 +839,7 @@ static int __init reipl_ccw_init(void)
         }
         reipl_block_ccw->hdr.len = IPL_PARM_BLK_CCW_LEN;
         reipl_block_ccw->hdr.version = IPL_PARM_BLOCK_VERSION;
-        reipl_block_ccw->hdr.blk0_len = sizeof(reipl_block_ccw->ipl_info.ccw);
+        reipl_block_ccw->hdr.blk0_len = IPL_PARM_BLK0_CCW_LEN;
         reipl_block_ccw->hdr.pbt = DIAG308_IPL_TYPE_CCW;
         /* check if read scp info worked and set loadparm */
         if (SCCB_VALID)
@@ -880,8 +880,7 @@ static int __init reipl_fcp_init(void)
         } else {
                 reipl_block_fcp->hdr.len = IPL_PARM_BLK_FCP_LEN;
                 reipl_block_fcp->hdr.version = IPL_PARM_BLOCK_VERSION;
-                reipl_block_fcp->hdr.blk0_len =
-                        sizeof(reipl_block_fcp->ipl_info.fcp);
+                reipl_block_fcp->hdr.blk0_len = IPL_PARM_BLK0_FCP_LEN;
                 reipl_block_fcp->hdr.pbt = DIAG308_IPL_TYPE_FCP;
                 reipl_block_fcp->ipl_info.fcp.opt = DIAG308_IPL_OPT_IPL;
         }
@@ -930,7 +929,7 @@ static int __init dump_ccw_init(void)
         }
         dump_block_ccw->hdr.len = IPL_PARM_BLK_CCW_LEN;
         dump_block_ccw->hdr.version = IPL_PARM_BLOCK_VERSION;
-        dump_block_ccw->hdr.blk0_len = sizeof(reipl_block_ccw->ipl_info.ccw);
+        dump_block_ccw->hdr.blk0_len = IPL_PARM_BLK0_CCW_LEN;
         dump_block_ccw->hdr.pbt = DIAG308_IPL_TYPE_CCW;
         dump_capabilities |= IPL_TYPE_CCW;
         return 0;
@@ -954,7 +953,7 @@ static int __init dump_fcp_init(void)
         }
         dump_block_fcp->hdr.len = IPL_PARM_BLK_FCP_LEN;
         dump_block_fcp->hdr.version = IPL_PARM_BLOCK_VERSION;
-        dump_block_fcp->hdr.blk0_len = sizeof(dump_block_fcp->ipl_info.fcp);
+        dump_block_fcp->hdr.blk0_len = IPL_PARM_BLK0_FCP_LEN;
         dump_block_fcp->hdr.pbt = DIAG308_IPL_TYPE_FCP;
         dump_block_fcp->ipl_info.fcp.opt = DIAG308_IPL_OPT_DUMP;
         dump_capabilities |= IPL_TYPE_FCP;
diff --git a/arch/s390/kernel/syscalls.S b/arch/s390/kernel/syscalls.S
index a52c44455bf0..c774f1069e10 100644
--- a/arch/s390/kernel/syscalls.S
+++ b/arch/s390/kernel/syscalls.S
@@ -320,4 +320,5 @@ SYSCALL(sys_tee,sys_tee,sys_tee_wrapper)
 SYSCALL(sys_vmsplice,sys_vmsplice,compat_sys_vmsplice_wrapper)
 NI_SYSCALL                                                      /* 310 sys_move_pages */
 SYSCALL(sys_getcpu,sys_getcpu,sys_getcpu_wrapper)
-SYSCALL(sys_epoll_pwait,sys_epoll_pwait,sys_ni_syscall)
+SYSCALL(sys_epoll_pwait,sys_epoll_pwait,compat_sys_epoll_pwait_wrapper)
+SYSCALL(sys_utimes,sys_utimes,compat_sys_utimes_wrapper)
diff --git a/arch/sh/drivers/pci/pci-auto.c b/arch/sh/drivers/pci/pci-auto.c
index ecf16344f94a..224e007736fb 100644
--- a/arch/sh/drivers/pci/pci-auto.c
+++ b/arch/sh/drivers/pci/pci-auto.c
@@ -214,6 +214,12 @@ retry:
                         continue;
                 }
 
+                if (bar_value < *lower_limit || (bar_value + bar_size) >= *upper_limit) {
+                        DBG(" unavailable -- skipping, value %x size %x\n",
+                                        bar_value, bar_size);
+                        continue;
+                }
+
 #ifdef CONFIG_PCI_AUTO_UPDATE_RESOURCES
                 /* Write it out and update our limit */
                 early_write_config_dword(hose, top_bus, current_bus, pci_devfn,
diff --git a/arch/sh/kernel/cpu/init.c b/arch/sh/kernel/cpu/init.c
index 4b339a640b13..726acfcb9b77 100644
--- a/arch/sh/kernel/cpu/init.c
+++ b/arch/sh/kernel/cpu/init.c
@@ -3,7 +3,7 @@
  *
  * CPU init code
  *
- * Copyright (C) 2002 - 2006  Paul Mundt
+ * Copyright (C) 2002 - 2007  Paul Mundt
  * Copyright (C) 2003  Richard Curnow
  *
  * This file is subject to the terms and conditions of the GNU General Public
@@ -48,8 +48,19 @@ static void __init cache_init(void)
 {
         unsigned long ccr, flags;
 
-        if (current_cpu_data.type == CPU_SH_NONE)
-                panic("Unknown CPU");
+        /* First setup the rest of the I-cache info */
+        current_cpu_data.icache.entry_mask = current_cpu_data.icache.way_incr -
+                                      current_cpu_data.icache.linesz;
+
+        current_cpu_data.icache.way_size = current_cpu_data.icache.sets *
+                                    current_cpu_data.icache.linesz;
+
+        /* And the D-cache too */
+        current_cpu_data.dcache.entry_mask = current_cpu_data.dcache.way_incr -
+                                      current_cpu_data.dcache.linesz;
+
+        current_cpu_data.dcache.way_size = current_cpu_data.dcache.sets *
+                                    current_cpu_data.dcache.linesz;
 
         jump_to_P2();
         ccr = ctrl_inl(CCR);
@@ -200,6 +211,9 @@ asmlinkage void __init sh_cpu_init(void)
         /* First, probe the CPU */
         detect_cpu_and_cache_system();
 
+        if (current_cpu_data.type == CPU_SH_NONE)
+                panic("Unknown CPU");
+
         /* Init the cache */
         cache_init();
 
diff --git a/arch/sh/kernel/cpu/sh2/entry.S b/arch/sh/kernel/cpu/sh2/entry.S
index 7f7d292f36ec..c16dc8fec489 100644
--- a/arch/sh/kernel/cpu/sh2/entry.S
+++ b/arch/sh/kernel/cpu/sh2/entry.S
@@ -165,6 +165,7 @@ ENTRY(exception_handler)
 
 interrupt_entry:
         mov     r9,r4
+        mov     r15,r5
         mov.l   6f,r9
         mov.l   7f,r8
         jmp     @r8
diff --git a/arch/sh/kernel/cpu/sh3/entry.S b/arch/sh/kernel/cpu/sh3/entry.S
index c19205b0f2c0..f3e827f29a46 100644
--- a/arch/sh/kernel/cpu/sh3/entry.S
+++ b/arch/sh/kernel/cpu/sh3/entry.S
@@ -514,13 +514,16 @@ skip_save:
 
 interrupt_exception:
         mov.l   1f, r9
+        mov.l   2f, r4
+        mov.l   @r4, r4
         jmp     @r9
-         nop
+         mov    r15, r5
         rts
          nop
 
         .align 2
 1:      .long   do_IRQ
+2:      .long   INTEVT
 
         .align  2
 ENTRY(exception_none)
diff --git a/arch/sh/kernel/cpu/sh4/probe.c b/arch/sh/kernel/cpu/sh4/probe.c
index 9d28c88d2f9d..58950de2696d 100644
--- a/arch/sh/kernel/cpu/sh4/probe.c
+++ b/arch/sh/kernel/cpu/sh4/probe.c
@@ -195,13 +195,6 @@ int __init detect_cpu_and_cache_system(void)
 
         }
 
-        /* Setup the rest of the I-cache info */
-        current_cpu_data.icache.entry_mask = current_cpu_data.icache.way_incr -
-                                      current_cpu_data.icache.linesz;
-
-        current_cpu_data.icache.way_size = current_cpu_data.icache.sets *
-                                    current_cpu_data.icache.linesz;
-
         /* And the rest of the D-cache */
         if (current_cpu_data.dcache.ways > 1) {
                 size = sizes[(cvr >> 16) & 0xf];
@@ -209,12 +202,6 @@ int __init detect_cpu_and_cache_system(void)
                 current_cpu_data.dcache.sets            = (size >> 6);
         }
 
-        current_cpu_data.dcache.entry_mask = current_cpu_data.dcache.way_incr -
-                                      current_cpu_data.dcache.linesz;
-
-        current_cpu_data.dcache.way_size = current_cpu_data.dcache.sets *
-                                    current_cpu_data.dcache.linesz;
-
         /*
          * Setup the L2 cache desc
          *
diff --git a/arch/sh/kernel/irq.c b/arch/sh/kernel/irq.c
index 67be2b6e8cd1..9bdd8a00cd4a 100644
--- a/arch/sh/kernel/irq.c
+++ b/arch/sh/kernel/irq.c
@@ -11,7 +11,6 @@
 #include <linux/module.h>
 #include <linux/kernel_stat.h>
 #include <linux/seq_file.h>
-#include <linux/io.h>
 #include <linux/irq.h>
 #include <asm/processor.h>
 #include <asm/uaccess.h>
@@ -82,13 +81,9 @@ static union irq_ctx *hardirq_ctx[NR_CPUS] __read_mostly;
 static union irq_ctx *softirq_ctx[NR_CPUS] __read_mostly;
 #endif
 
-asmlinkage int do_IRQ(unsigned long r4, unsigned long r5,
-                      unsigned long r6, unsigned long r7,
-                      struct pt_regs __regs)
+asmlinkage int do_IRQ(unsigned int irq, struct pt_regs *regs)
 {
-        struct pt_regs *regs = RELOC_HIDE(&__regs, 0);
         struct pt_regs *old_regs = set_irq_regs(regs);
-        int irq;
 #ifdef CONFIG_4KSTACKS
         union irq_ctx *curctx, *irqctx;
 #endif
@@ -111,13 +106,7 @@ asmlinkage int do_IRQ(unsigned long r4, unsigned long r5,
         }
 #endif
 
-#ifdef CONFIG_CPU_HAS_INTEVT
-        irq = evt2irq(ctrl_inl(INTEVT));
-#else
-        irq = r4;
-#endif
-
-        irq = irq_demux(irq);
+        irq = irq_demux(evt2irq(irq));
 
 #ifdef CONFIG_4KSTACKS
         curctx = (union irq_ctx *)current_thread_info();