Merge branch 'master' of /pub/scm/linux/kernel/git/torvalds/linux-2.6

Pull fixes in from 2.6.31 so that people testing the iommu-2.6.git tree
no longer trip over bugs which were already fixed (sorry, Horms).

13 files changed, 47 insertions, 45 deletions

diff --git a/arch/mips/kernel/head.S b/arch/mips/kernel/head.S
index 492a0a8d70fb..531ce7b16124 100644
--- a/arch/mips/kernel/head.S
+++ b/arch/mips/kernel/head.S
@@ -188,7 +188,8 @@ NESTED(kernel_entry, 16, sp)			# kernel entry point
 
         MTC0            zero, CP0_CONTEXT       # clear context register
         PTR_LA          $28, init_thread_union
-        PTR_LI          sp, _THREAD_SIZE - 32
+        /* Set the SP after an empty pt_regs.  */
+        PTR_LI          sp, _THREAD_SIZE - 32 - PT_SIZE
         PTR_ADDU        sp, $28
         set_saved_sp    sp, t0, t1
         PTR_SUBU        sp, 4 * SZREG           # init stack pointer
diff --git a/arch/mips/kernel/irq_txx9.c b/arch/mips/kernel/irq_txx9.c
index a4d1462c27f7..9b78029bea70 100644
--- a/arch/mips/kernel/irq_txx9.c
+++ b/arch/mips/kernel/irq_txx9.c
@@ -1,6 +1,4 @@
 /*
- * linux/arch/mips/kernel/irq_txx9.c
- *
  * Based on linux/arch/mips/jmr3927/rbhma3100/irq.c,
  *          linux/arch/mips/tx4927/common/tx4927_irq.c,
  *          linux/arch/mips/tx4938/common/irq.c
diff --git a/arch/mips/kernel/module.c b/arch/mips/kernel/module.c
index 3e9100dcc12d..6f51dda87fce 100644
--- a/arch/mips/kernel/module.c
+++ b/arch/mips/kernel/module.c
@@ -98,7 +98,8 @@ static int apply_r_mips_32_rela(struct module *me, u32 *location, Elf_Addr v)
 static int apply_r_mips_26_rel(struct module *me, u32 *location, Elf_Addr v)
 {
         if (v % 4) {
-                printk(KERN_ERR "module %s: dangerous relocation\n", me->name);
+                pr_err("module %s: dangerous R_MIPS_26 REL relocation\n",
+                       me->name);
                 return -ENOEXEC;
         }
 
@@ -118,7 +119,8 @@ static int apply_r_mips_26_rel(struct module *me, u32 *location, Elf_Addr v)
 static int apply_r_mips_26_rela(struct module *me, u32 *location, Elf_Addr v)
 {
         if (v % 4) {
-                printk(KERN_ERR "module %s: dangerous relocation\n", me->name);
+                pr_err("module %s: dangerous R_MIPS_26 RELArelocation\n",
+                       me->name);
                 return -ENOEXEC;
         }
 
@@ -222,7 +224,7 @@ static int apply_r_mips_lo16_rel(struct module *me, u32 *location, Elf_Addr v)
         return 0;
 
 out_danger:
-        printk(KERN_ERR "module %s: dangerous " "relocation\n", me->name);
+        pr_err("module %s: dangerous R_MIPS_LO16 REL relocation\n", me->name);
 
         return -ENOEXEC;
 }
@@ -301,7 +303,7 @@ int apply_relocate(Elf_Shdr *sechdrs, const char *strtab,
                 /* This is the symbol it is referring to */
                 sym = (Elf_Sym *)sechdrs[symindex].sh_addr
                         + ELF_MIPS_R_SYM(rel[i]);
-                if (!sym->st_value) {
+                if (IS_ERR_VALUE(sym->st_value)) {
                         /* Ignore unresolved weak symbol */
                         if (ELF_ST_BIND(sym->st_info) == STB_WEAK)
                                 continue;
@@ -341,7 +343,7 @@ int apply_relocate_add(Elf_Shdr *sechdrs, const char *strtab,
                 /* This is the symbol it is referring to */
                 sym = (Elf_Sym *)sechdrs[symindex].sh_addr
                         + ELF_MIPS_R_SYM(rel[i]);
-                if (!sym->st_value) {
+                if (IS_ERR_VALUE(sym->st_value)) {
                         /* Ignore unresolved weak symbol */
                         if (ELF_ST_BIND(sym->st_info) == STB_WEAK)
                                 continue;
diff --git a/arch/mips/kernel/proc.c b/arch/mips/kernel/proc.c
index e0a4ac18fa07..26109c4d5170 100644
--- a/arch/mips/kernel/proc.c
+++ b/arch/mips/kernel/proc.c
@@ -1,6 +1,4 @@
 /*
- *  linux/arch/mips/kernel/proc.c
- *
  *  Copyright (C) 1995, 1996, 2001  Ralf Baechle
  *  Copyright (C) 2001, 2004  MIPS Technologies, Inc.
  *  Copyright (C) 2004  Maciej W. Rozycki
diff --git a/arch/mips/kernel/process.c b/arch/mips/kernel/process.c
index c09d681b7181..f3d73e1831c1 100644
--- a/arch/mips/kernel/process.c
+++ b/arch/mips/kernel/process.c
@@ -115,7 +115,7 @@ int copy_thread(unsigned long clone_flags, unsigned long usp,
 {
         struct thread_info *ti = task_thread_info(p);
         struct pt_regs *childregs;
-        long childksp;
+        unsigned long childksp;
         p->set_child_tid = p->clear_child_tid = NULL;
 
         childksp = (unsigned long)task_stack_page(p) + THREAD_SIZE - 32;
@@ -132,6 +132,8 @@ int copy_thread(unsigned long clone_flags, unsigned long usp,
 
         /* set up new TSS. */
         childregs = (struct pt_regs *) childksp - 1;
+        /*  Put the stack after the struct pt_regs.  */
+        childksp = (unsigned long) childregs;
         *childregs = *regs;
         childregs->regs[7] = 0; /* Clear error flag */
 
diff --git a/arch/mips/kernel/ptrace32.c b/arch/mips/kernel/ptrace32.c
index c4f9ac17474a..32644b4a0714 100644
--- a/arch/mips/kernel/ptrace32.c
+++ b/arch/mips/kernel/ptrace32.c
@@ -22,7 +22,6 @@
 #include <linux/errno.h>
 #include <linux/ptrace.h>
 #include <linux/smp.h>
-#include <linux/smp_lock.h>
 #include <linux/user.h>
 #include <linux/security.h>
 
diff --git a/arch/mips/kernel/scall32-o32.S b/arch/mips/kernel/scall32-o32.S
index 20a86e08fd58..b57082123536 100644
--- a/arch/mips/kernel/scall32-o32.S
+++ b/arch/mips/kernel/scall32-o32.S
@@ -654,6 +654,7 @@ einval:	li	v0, -ENOSYS
         sys     sys_pwritev             6
         sys     sys_rt_tgsigqueueinfo   4
         sys     sys_perf_counter_open   5
+        sys     sys_accept4             4
         .endm
 
         /* We pre-compute the number of _instruction_ bytes needed to
diff --git a/arch/mips/kernel/scall64-64.S b/arch/mips/kernel/scall64-64.S
index b046130d4c5d..3d866f24e064 100644
--- a/arch/mips/kernel/scall64-64.S
+++ b/arch/mips/kernel/scall64-64.S
@@ -491,4 +491,5 @@ sys_call_table:
         PTR     sys_pwritev                     /* 5390 */
         PTR     sys_rt_tgsigqueueinfo
         PTR     sys_perf_counter_open
+        PTR     sys_accept4
         .size   sys_call_table,.-sys_call_table
diff --git a/arch/mips/kernel/scall64-n32.S b/arch/mips/kernel/scall64-n32.S
index 15874f9812cc..e855b118a079 100644
--- a/arch/mips/kernel/scall64-n32.S
+++ b/arch/mips/kernel/scall64-n32.S
@@ -417,4 +417,5 @@ EXPORT(sysn32_call_table)
         PTR     sys_pwritev
         PTR     compat_sys_rt_tgsigqueueinfo    /* 5295 */
         PTR     sys_perf_counter_open
+        PTR     sys_accept4
         .size   sysn32_call_table,.-sysn32_call_table
diff --git a/arch/mips/kernel/scall64-o32.S b/arch/mips/kernel/scall64-o32.S
index 781e0f1e9533..0c49f1a660be 100644
--- a/arch/mips/kernel/scall64-o32.S
+++ b/arch/mips/kernel/scall64-o32.S
@@ -537,4 +537,5 @@ sys_call_table:
         PTR     compat_sys_pwritev
         PTR     compat_sys_rt_tgsigqueueinfo
         PTR     sys_perf_counter_open
+        PTR     sys_accept4
         .size   sys_call_table,.-sys_call_table
diff --git a/arch/mips/kernel/smtc.c b/arch/mips/kernel/smtc.c
index 8a0626cbb108..c16bb6d6c25c 100644
--- a/arch/mips/kernel/smtc.c
+++ b/arch/mips/kernel/smtc.c
@@ -465,11 +465,8 @@ void smtc_prepare_cpus(int cpus)
         smtc_configure_tlb();
 
         for (tc = 0, vpe = 0 ; (vpe < nvpe) && (tc < ntc) ; vpe++) {
-                /*
-                 * Set the MVP bits.
-                 */
-                settc(tc);
-                write_vpe_c0_vpeconf0(read_vpe_c0_vpeconf0() | VPECONF0_MVP);
+                if (tcpervpe[vpe] == 0)
+                        continue;
                 if (vpe != 0)
                         printk(", ");
                 printk("VPE %d: TC", vpe);
@@ -488,6 +485,12 @@ void smtc_prepare_cpus(int cpus)
                 }
                 if (vpe != 0) {
                         /*
+                         * Allow this VPE to control others.
+                         */
+                        write_vpe_c0_vpeconf0(read_vpe_c0_vpeconf0() |
+                                              VPECONF0_MVP);
+
+                        /*
                          * Clear any stale software interrupts from VPE's Cause
                          */
                         write_vpe_c0_cause(0);
diff --git a/arch/mips/kernel/stacktrace.c b/arch/mips/kernel/stacktrace.c
index 58f5cd76c8c3..d52ff77baf3f 100644
--- a/arch/mips/kernel/stacktrace.c
+++ b/arch/mips/kernel/stacktrace.c
@@ -1,6 +1,4 @@
 /*
- * arch/mips/kernel/stacktrace.c
- *
  * Stack trace management functions
  *
  *  Copyright (C) 2006 Atsushi Nemoto <anemo@mba.ocn.ne.jp>
diff --git a/arch/mips/kernel/vpe.c b/arch/mips/kernel/vpe.c
index 07b9ec2c6e3d..9a1ab7e87fd4 100644
--- a/arch/mips/kernel/vpe.c
+++ b/arch/mips/kernel/vpe.c
@@ -73,7 +73,7 @@ static int major;
 static const int minor = 1;     /* fixed for now  */
 
 #ifdef CONFIG_MIPS_APSP_KSPD
- static struct kspd_notifications kspd_events;
+static struct kspd_notifications kspd_events;
 static int kspd_events_reqd = 0;
 #endif
 
@@ -155,10 +155,9 @@ struct {
 };
 
 static void release_progmem(void *ptr);
-extern void save_gp_address(unsigned int secbase, unsigned int rel);
 
 /* get the vpe associated with this minor */
-struct vpe *get_vpe(int minor)
+static struct vpe *get_vpe(int minor)
 {
         struct vpe *v;
 
@@ -174,7 +173,7 @@ struct vpe *get_vpe(int minor)
 }
 
 /* get the vpe associated with this minor */
-struct tc *get_tc(int index)
+static struct tc *get_tc(int index)
 {
         struct tc *t;
 
@@ -186,20 +185,8 @@ struct tc *get_tc(int index)
         return NULL;
 }
 
-struct tc *get_tc_unused(void)
-{
-        struct tc *t;
-
-        list_for_each_entry(t, &vpecontrol.tc_list, list) {
-                if (t->state == TC_STATE_UNUSED)
-                        return t;
-        }
-
-        return NULL;
-}
-
 /* allocate a vpe and associate it with this minor (or index) */
-struct vpe *alloc_vpe(int minor)
+static struct vpe *alloc_vpe(int minor)
 {
         struct vpe *v;
 
@@ -216,7 +203,7 @@ struct vpe *alloc_vpe(int minor)
 }
 
 /* allocate a tc. At startup only tc0 is running, all other can be halted. */
-struct tc *alloc_tc(int index)
+static struct tc *alloc_tc(int index)
 {
         struct tc *tc;
 
@@ -232,7 +219,7 @@ out:
 }
 
 /* clean up and free everything */
-void release_vpe(struct vpe *v)
+static void release_vpe(struct vpe *v)
 {
         list_del(&v->list);
         if (v->load_addr)
@@ -240,7 +227,7 @@ void release_vpe(struct vpe *v)
         kfree(v);
 }
 
-void dump_mtregs(void)
+static void dump_mtregs(void)
 {
         unsigned long val;
 
@@ -327,7 +314,8 @@ static void layout_sections(struct module *mod, const Elf_Ehdr * hdr,
                             || (s->sh_flags & masks[m][1])
                             || s->sh_entsize != ~0UL)
                                 continue;
-                        s->sh_entsize = get_offset(&mod->core_size, s);
+                        s->sh_entsize =
+                                get_offset((unsigned long *)&mod->core_size, s);
                 }
 
                 if (m == 0)
@@ -461,16 +449,15 @@ static int apply_r_mips_lo16(struct module *me, uint32_t *location,
 {
         unsigned long insnlo = *location;
         Elf32_Addr val, vallo;
+        struct mips_hi16 *l, *next;
 
         /* Sign extend the addend we extract from the lo insn.  */
         vallo = ((insnlo & 0xffff) ^ 0x8000) - 0x8000;
 
         if (mips_hi16_list != NULL) {
-                struct mips_hi16 *l;
 
                 l = mips_hi16_list;
                 while (l != NULL) {
-                        struct mips_hi16 *next;
                         unsigned long insn;
 
                         /*
@@ -480,7 +467,7 @@ static int apply_r_mips_lo16(struct module *me, uint32_t *location,
                                 printk(KERN_DEBUG "VPE loader: "
                                        "apply_r_mips_lo16/hi16: \t"
                                        "inconsistent value information\n");
-                                return -ENOEXEC;
+                                goto out_free;
                         }
 
                         /*
@@ -518,6 +505,16 @@ static int apply_r_mips_lo16(struct module *me, uint32_t *location,
         *location = insnlo;
 
         return 0;
+
+out_free:
+        while (l != NULL) {
+                next = l->next;
+                kfree(l);
+                l = next;
+        }
+        mips_hi16_list = NULL;
+
+        return -ENOEXEC;
 }
 
 static int (*reloc_handlers[]) (struct module *me, uint32_t *location,
@@ -541,7 +538,7 @@ static char *rstrs[] = {
         [R_MIPS_PC16] = "MIPS_PC16"
 };
 
-int apply_relocations(Elf32_Shdr *sechdrs,
+static int apply_relocations(Elf32_Shdr *sechdrs,
                       const char *strtab,
                       unsigned int symindex,
                       unsigned int relsec,
@@ -586,7 +583,7 @@ int apply_relocations(Elf32_Shdr *sechdrs,
         return 0;
 }
 
-void save_gp_address(unsigned int secbase, unsigned int rel)
+static inline void save_gp_address(unsigned int secbase, unsigned int rel)
 {
         gp_addr = secbase + rel;
         gp_offs = gp_addr - (secbase & 0xffff0000);