8 files changed, 44 insertions, 19 deletions

diff --git a/arch/mips/kernel/cpu-bugs64.c b/arch/mips/kernel/cpu-bugs64.c
index 47a087b6c11b..d268827c62bd 100644
--- a/arch/mips/kernel/cpu-bugs64.c
+++ b/arch/mips/kernel/cpu-bugs64.c
@@ -206,7 +206,7 @@ static inline void check_daddi(void)
                 "daddi  %0, %1, %3\n\t"
                 ".set   pop"
                 : "=r" (v), "=&r" (tmp)
-                : "I" (0xffffffffffffdb9a), "I" (0x1234));
+                : "I" (0xffffffffffffdb9aUL), "I" (0x1234));
         set_except_vector(12, handler);
         local_irq_restore(flags);
 
@@ -224,7 +224,7 @@ static inline void check_daddi(void)
                 "dsrl   %1, %1, 1\n\t"
                 "daddi  %0, %1, %3"
                 : "=r" (v), "=&r" (tmp)
-                : "I" (0xffffffffffffdb9a), "I" (0x1234));
+                : "I" (0xffffffffffffdb9aUL), "I" (0x1234));
         set_except_vector(12, handler);
         local_irq_restore(flags);
 
@@ -280,7 +280,7 @@ static inline void check_daddiu(void)
                 "daddu  %1, %2\n\t"
                 ".set   pop"
                 : "=&r" (v), "=&r" (w), "=&r" (tmp)
-                : "I" (0xffffffffffffdb9a), "I" (0x1234));
+                : "I" (0xffffffffffffdb9aUL), "I" (0x1234));
 
         if (v == w) {
                 printk("no.\n");
@@ -296,7 +296,7 @@ static inline void check_daddiu(void)
                 "addiu  %1, $0, %4\n\t"
                 "daddu  %1, %2"
                 : "=&r" (v), "=&r" (w), "=&r" (tmp)
-                : "I" (0xffffffffffffdb9a), "I" (0x1234));
+                : "I" (0xffffffffffffdb9aUL), "I" (0x1234));
 
         if (v == w) {
                 printk("yes.\n");
diff --git a/arch/mips/kernel/cpu-probe.c b/arch/mips/kernel/cpu-probe.c
index bef3e2dc7c52..8c2c359a05f4 100644
--- a/arch/mips/kernel/cpu-probe.c
+++ b/arch/mips/kernel/cpu-probe.c
@@ -655,7 +655,7 @@ static inline void cpu_probe_sibyte(struct cpuinfo_mips *c)
         case PRID_IMP_SB1:
                 c->cputype = CPU_SB1;
                 /* FPU in pass1 is known to have issues. */
-                if ((c->processor_id & 0xff) < 0x20)
+                if ((c->processor_id & 0xff) < 0x02)
                         c->options &= ~(MIPS_CPU_FPU | MIPS_CPU_32FPR);
                 break;
         case PRID_IMP_SB1A:
diff --git a/arch/mips/kernel/module.c b/arch/mips/kernel/module.c
index e54a7f442f8a..d7bf0215bc1d 100644
--- a/arch/mips/kernel/module.c
+++ b/arch/mips/kernel/module.c
@@ -288,6 +288,9 @@ int apply_relocate(Elf_Shdr *sechdrs, const char *strtab,
                 sym = (Elf_Sym *)sechdrs[symindex].sh_addr
                         + ELF_MIPS_R_SYM(rel[i]);
                 if (!sym->st_value) {
+                        /* Ignore unresolved weak symbol */
+                        if (ELF_ST_BIND(sym->st_info) == STB_WEAK)
+                                continue;
                         printk(KERN_WARNING "%s: Unknown symbol %s\n",
                                me->name, strtab + sym->st_name);
                         return -ENOENT;
@@ -325,6 +328,9 @@ int apply_relocate_add(Elf_Shdr *sechdrs, const char *strtab,
                 sym = (Elf_Sym *)sechdrs[symindex].sh_addr
                         + ELF_MIPS_R_SYM(rel[i]);
                 if (!sym->st_value) {
+                        /* Ignore unresolved weak symbol */
+                        if (ELF_ST_BIND(sym->st_info) == STB_WEAK)
+                                continue;
                         printk(KERN_WARNING "%s: Unknown symbol %s\n",
                                me->name, strtab + sym->st_name);
                         return -ENOENT;
diff --git a/arch/mips/kernel/scall64-o32.S b/arch/mips/kernel/scall64-o32.S
index b53a9207f530..8efb23a84131 100644
--- a/arch/mips/kernel/scall64-o32.S
+++ b/arch/mips/kernel/scall64-o32.S
@@ -209,7 +209,7 @@ sys_call_table:
         PTR     sys_fork
         PTR     sys_read
         PTR     sys_write
-        PTR     sys_open                        /* 4005 */
+        PTR     compat_sys_open                 /* 4005 */
         PTR     sys_close
         PTR     sys_waitpid
         PTR     sys_creat
diff --git a/arch/mips/kernel/setup.c b/arch/mips/kernel/setup.c
index bcf1b10e518f..397a70e651b5 100644
--- a/arch/mips/kernel/setup.c
+++ b/arch/mips/kernel/setup.c
@@ -246,7 +246,7 @@ static inline int parse_rd_cmdline(unsigned long* rd_start, unsigned long* rd_en
 #ifdef CONFIG_64BIT
         /* HACK: Guess if the sign extension was forgotten */
         if (start > 0x0000000080000000 && start < 0x00000000ffffffff)
-                start |= 0xffffffff00000000;
+                start |= 0xffffffff00000000UL;
 #endif
 
         end = start + size;
@@ -355,8 +355,6 @@ static inline void bootmem_init(void)
         }
 #endif
 
-        memory_present(0, first_usable_pfn, max_low_pfn);
-
         /* Initialize the boot-time allocator with low memory only.  */
         bootmap_size = init_bootmem(first_usable_pfn, max_low_pfn);
 
@@ -410,6 +408,7 @@ static inline void bootmem_init(void)
 
                 /* Register lowmem ranges */
                 free_bootmem(PFN_PHYS(curr_pfn), PFN_PHYS(size));
+                memory_present(0, curr_pfn, curr_pfn + size - 1);
         }
 
         /* Reserve the bootmap memory.  */
@@ -419,17 +418,20 @@ static inline void bootmem_init(void)
 #ifdef CONFIG_BLK_DEV_INITRD
         initrd_below_start_ok = 1;
         if (initrd_start) {
-                unsigned long initrd_size = ((unsigned char *)initrd_end) - ((unsigned char *)initrd_start);
+                unsigned long initrd_size = ((unsigned char *)initrd_end) -
+                        ((unsigned char *)initrd_start);
+                const int width = sizeof(long) * 2;
+
                 printk("Initial ramdisk at: 0x%p (%lu bytes)\n",
                        (void *)initrd_start, initrd_size);
 
                 if (CPHYSADDR(initrd_end) > PFN_PHYS(max_low_pfn)) {
                         printk("initrd extends beyond end of memory "
                                "(0x%0*Lx > 0x%0*Lx)\ndisabling initrd\n",
-                               sizeof(long) * 2,
-                               (unsigned long long)CPHYSADDR(initrd_end),
-                               sizeof(long) * 2,
-                               (unsigned long long)PFN_PHYS(max_low_pfn));
+                               width,
+                               (unsigned long long) CPHYSADDR(initrd_end),
+                               width,
+                               (unsigned long long) PFN_PHYS(max_low_pfn));
                         initrd_start = initrd_end = 0;
                         initrd_reserve_bootmem = 0;
                 }
diff --git a/arch/mips/kernel/smp.c b/arch/mips/kernel/smp.c
index d42f358754ad..298f82fe8440 100644
--- a/arch/mips/kernel/smp.c
+++ b/arch/mips/kernel/smp.c
@@ -247,6 +247,9 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
         current_thread_info()->cpu = 0;
         smp_tune_scheduling();
         plat_prepare_cpus(max_cpus);
+#ifndef CONFIG_HOTPLUG_CPU
+        cpu_present_map = cpu_possible_map;
+#endif
 }
 
 /* preload SMP state for boot cpu */
@@ -442,7 +445,7 @@ static int __init topology_init(void)
         int cpu;
         int ret;
 
-        for_each_cpu(cpu) {
+        for_each_present_cpu(cpu) {
                 ret = register_cpu(&per_cpu(cpu_devices, cpu), cpu, NULL);
                 if (ret)
                         printk(KERN_WARNING "topology_init: register_cpu %d "
diff --git a/arch/mips/kernel/syscall.c b/arch/mips/kernel/syscall.c
index 8f4fdd94dbd0..5e8a18a8e2bd 100644
--- a/arch/mips/kernel/syscall.c
+++ b/arch/mips/kernel/syscall.c
@@ -276,8 +276,7 @@ void sys_set_thread_area(unsigned long addr)
 
 asmlinkage int _sys_sysmips(int cmd, long arg1, int arg2, int arg3)
 {
-        int     tmp, len;
-        char    __user *name;
+        int     tmp;
 
         switch(cmd) {
         case MIPS_ATOMIC_SET:
diff --git a/arch/mips/kernel/traps.c b/arch/mips/kernel/traps.c
index 35cb08da3820..a7564b08eb4d 100644
--- a/arch/mips/kernel/traps.c
+++ b/arch/mips/kernel/traps.c
@@ -819,15 +819,30 @@ asmlinkage void do_watch(struct pt_regs *regs)
 
 asmlinkage void do_mcheck(struct pt_regs *regs)
 {
+        const int field = 2 * sizeof(unsigned long);
+        int multi_match = regs->cp0_status & ST0_TS;
+
         show_regs(regs);
-        dump_tlb_all();
+
+        if (multi_match) {
+                printk("Index   : %0x\n", read_c0_index());
+                printk("Pagemask: %0x\n", read_c0_pagemask());
+                printk("EntryHi : %0*lx\n", field, read_c0_entryhi());
+                printk("EntryLo0: %0*lx\n", field, read_c0_entrylo0());
+                printk("EntryLo1: %0*lx\n", field, read_c0_entrylo1());
+                printk("\n");
+                dump_tlb_all();
+        }
+
+        show_code((unsigned int *) regs->cp0_epc);
+
         /*
          * Some chips may have other causes of machine check (e.g. SB1
          * graduation timer)
          */
         panic("Caught Machine Check exception - %scaused by multiple "
               "matching entries in the TLB.",
-              (regs->cp0_status & ST0_TS) ? "" : "not ");
+              (multi_match) ? "" : "not ");
 }
 
 asmlinkage void do_mt(struct pt_regs *regs)