Merge branch 'merge'

28 files changed, 136 insertions, 70 deletions

diff --git a/arch/mips/au1000/common/prom.c b/arch/mips/au1000/common/prom.c
index 9c171afd9a53..ae7d8c57bf3f 100644
--- a/arch/mips/au1000/common/prom.c
+++ b/arch/mips/au1000/common/prom.c
@@ -1,10 +1,9 @@
 /*
  *
  * BRIEF MODULE DESCRIPTION
- *    PROM library initialisation code, assuming a version of
- *    pmon is the boot code.
+ *    PROM library initialisation code, assuming YAMON is the boot loader.
  *
- * Copyright 2000,2001 MontaVista Software Inc.
+ * Copyright 2000, 2001, 2006 MontaVista Software Inc.
  * Author: MontaVista Software, Inc.
  *         	ppopov@mvista.com or source@mvista.com
  *
@@ -49,9 +48,9 @@ extern char **prom_argv, **prom_envp;
 
 typedef struct
 {
-    char *name;
-/*    char *val; */
-}t_env_var;
+	char *name;
+	char *val;
+} t_env_var;
 
 
 char * prom_getcmdline(void)
@@ -85,21 +84,16 @@ char *prom_getenv(char *envname)
 {
 	/*
 	 * Return a pointer to the given environment variable.
-	 * Environment variables are stored in the form of "memsize=64".
 	 */
 
 	t_env_var *env = (t_env_var *)prom_envp;
-	int i;
-
-	i = strlen(envname);
 
-	while(env->name) {
-		if(strncmp(envname, env->name, i) == 0) {
-			return(env->name + strlen(envname) + 1);
-		}
+	while (env->name) {
+		if (strcmp(envname, env->name) == 0)
+			return env->val;
 		env++;
 	}
-	return(NULL);
+	return NULL;
 }
 
 inline unsigned char str2hexnum(unsigned char c)
diff --git a/arch/mips/au1000/common/sleeper.S b/arch/mips/au1000/common/sleeper.S
index 44dac3b0df3b..683d9da84b66 100644
--- a/arch/mips/au1000/common/sleeper.S
+++ b/arch/mips/au1000/common/sleeper.S
@@ -112,6 +112,11 @@ sdsleep:
 	mtc0	k0, CP0_PAGEMASK
 	lw	k0, 0x14(sp)
 	mtc0	k0, CP0_CONFIG
+
+	/* We need to catch the ealry Alchemy SOCs with
+	 * the write-only Config[OD] bit and set it back to one...
+	 */
+	jal	au1x00_fixup_config_od
 	lw	$1, PT_R1(sp)
 	lw	$2, PT_R2(sp)
 	lw	$3, PT_R3(sp)
diff --git a/arch/mips/ddb5xxx/ddb5476/dbg_io.c b/arch/mips/ddb5xxx/ddb5476/dbg_io.c
index 85e9e5013679..f2296a999953 100644
--- a/arch/mips/ddb5xxx/ddb5476/dbg_io.c
+++ b/arch/mips/ddb5xxx/ddb5476/dbg_io.c
@@ -86,7 +86,7 @@ void debugInit(uint32 baud, uint8 data, uint8 parity, uint8 stop)
         /* disable interrupts */
         UART16550_WRITE(OFS_INTR_ENABLE, 0);
 
-        /* set up buad rate */
+        /* set up baud rate */
         {
                 uint32 divisor;
 
diff --git a/arch/mips/ddb5xxx/ddb5477/kgdb_io.c b/arch/mips/ddb5xxx/ddb5477/kgdb_io.c
index 1d18d590495b..385bbdb10170 100644
--- a/arch/mips/ddb5xxx/ddb5477/kgdb_io.c
+++ b/arch/mips/ddb5xxx/ddb5477/kgdb_io.c
@@ -86,7 +86,7 @@ void debugInit(uint32 baud, uint8 data, uint8 parity, uint8 stop)
         /* disable interrupts */
         UART16550_WRITE(OFS_INTR_ENABLE, 0);
 
-        /* set up buad rate */
+        /* set up baud rate */
         {
                 uint32 divisor;
 
diff --git a/arch/mips/gt64120/ev64120/serialGT.c b/arch/mips/gt64120/ev64120/serialGT.c
index 16e34a546e54..8f0d835491ff 100644
--- a/arch/mips/gt64120/ev64120/serialGT.c
+++ b/arch/mips/gt64120/ev64120/serialGT.c
@@ -149,7 +149,7 @@ void serial_set(int channel, unsigned long baud)
 #else
 	/*
 	 * Note: Set baud rate, hardcoded here for rate of 115200
-	 * since became unsure of above "buad rate" algorithm (??).
+	 * since became unsure of above "baud rate" algorithm (??).
 	 */
 	outreg(channel, LCR, 0x83);
 	outreg(channel, DLM, 0x00);	// See note above
diff --git a/arch/mips/gt64120/momenco_ocelot/dbg_io.c b/arch/mips/gt64120/momenco_ocelot/dbg_io.c
index 8720bccfdea2..f0a6a38fcf4d 100644
--- a/arch/mips/gt64120/momenco_ocelot/dbg_io.c
+++ b/arch/mips/gt64120/momenco_ocelot/dbg_io.c
@@ -73,7 +73,7 @@ void debugInit(uint32 baud, uint8 data, uint8 parity, uint8 stop)
 	/* disable interrupts */
 	UART16550_WRITE(OFS_INTR_ENABLE, 0);
 
-	/* set up buad rate */
+	/* set up baud rate */
 	{
 		uint32 divisor;
 
diff --git a/arch/mips/ite-boards/generic/dbg_io.c b/arch/mips/ite-boards/generic/dbg_io.c
index c4f8530fd07e..6a7ccaf93502 100644
--- a/arch/mips/ite-boards/generic/dbg_io.c
+++ b/arch/mips/ite-boards/generic/dbg_io.c
@@ -72,7 +72,7 @@ void debugInit(uint32 baud, uint8 data, uint8 parity, uint8 stop)
 	/* disable interrupts */
 	UART16550_WRITE(OFS_INTR_ENABLE, 0);
 
-	/* set up buad rate */
+	/* set up baud rate */
 	{
 		uint32 divisor;
 
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)
diff --git a/arch/mips/math-emu/dp_fint.c b/arch/mips/math-emu/dp_fint.c
index a1962eb460f8..39a71de16f47 100644
--- a/arch/mips/math-emu/dp_fint.c
+++ b/arch/mips/math-emu/dp_fint.c
@@ -29,7 +29,9 @@
 
 ieee754dp ieee754dp_fint(int x)
 {
-	COMPXDP;
+	u64 xm;
+	int xe;
+	int xs;
 
 	CLEARCX;
 
diff --git a/arch/mips/math-emu/dp_flong.c b/arch/mips/math-emu/dp_flong.c
index eae90a866aa1..f08f223e488a 100644
--- a/arch/mips/math-emu/dp_flong.c
+++ b/arch/mips/math-emu/dp_flong.c
@@ -29,7 +29,9 @@
 
 ieee754dp ieee754dp_flong(s64 x)
 {
-	COMPXDP;
+	u64 xm;
+	int xe;
+	int xs;
 
 	CLEARCX;
 
diff --git a/arch/mips/math-emu/sp_fint.c b/arch/mips/math-emu/sp_fint.c
index 7aac13afb09a..e88e125e01c2 100644
--- a/arch/mips/math-emu/sp_fint.c
+++ b/arch/mips/math-emu/sp_fint.c
@@ -29,7 +29,9 @@
 
 ieee754sp ieee754sp_fint(int x)
 {
-	COMPXSP;
+	unsigned xm;
+	int xe;
+	int xs;
 
 	CLEARCX;
 
diff --git a/arch/mips/math-emu/sp_flong.c b/arch/mips/math-emu/sp_flong.c
index 3d6c1d11c178..26d6919a269a 100644
--- a/arch/mips/math-emu/sp_flong.c
+++ b/arch/mips/math-emu/sp_flong.c
@@ -29,7 +29,9 @@
 
 ieee754sp ieee754sp_flong(s64 x)
 {
-	COMPXDP;		/* <--- need 64-bit mantissa temp */
+	u64 xm;		/* <--- need 64-bit mantissa temp */
+	int xe;
+	int xs;
 
 	CLEARCX;
 
diff --git a/arch/mips/mm/c-r4k.c b/arch/mips/mm/c-r4k.c
index 6b3541769602..4a43924cd4fc 100644
--- a/arch/mips/mm/c-r4k.c
+++ b/arch/mips/mm/c-r4k.c
@@ -1161,6 +1161,31 @@ static void __init setup_scache(void)
 	c->options |= MIPS_CPU_SUBSET_CACHES;
 }
 
+void au1x00_fixup_config_od(void)
+{
+	/*
+	 * c0_config.od (bit 19) was write only (and read as 0)
+	 * on the early revisions of Alchemy SOCs.  It disables the bus
+	 * transaction overlapping and needs to be set to fix various errata.
+	 */
+	switch (read_c0_prid()) {
+	case 0x00030100: /* Au1000 DA */
+	case 0x00030201: /* Au1000 HA */
+	case 0x00030202: /* Au1000 HB */
+	case 0x01030200: /* Au1500 AB */
+	/*
+	 * Au1100 errata actually keeps silence about this bit, so we set it
+	 * just in case for those revisions that require it to be set according
+	 * to arch/mips/au1000/common/cputable.c
+	 */
+	case 0x02030200: /* Au1100 AB */
+	case 0x02030201: /* Au1100 BA */
+	case 0x02030202: /* Au1100 BC */
+		set_c0_config(1 << 19);
+		break;
+	}
+}
+
 static inline void coherency_setup(void)
 {
 	change_c0_config(CONF_CM_CMASK, CONF_CM_DEFAULT);
@@ -1181,6 +1206,15 @@ static inline void coherency_setup(void)
 	case CPU_R4400MC:
 		clear_c0_config(CONF_CU);
 		break;
+	/*
+	 * We need to catch the ealry Alchemy SOCs with
+	 * the write-only co_config.od bit and set it back to one...
+	 */
+	case CPU_AU1000: /* rev. DA, HA, HB */
+	case CPU_AU1100: /* rev. AB, BA, BC ?? */
+	case CPU_AU1500: /* rev. AB */
+		au1x00_fixup_config_od();
+		break;
 	}
 }
 
diff --git a/arch/mips/mm/init.c b/arch/mips/mm/init.c
index c22308b93ff0..33f6e1cdfd5b 100644
--- a/arch/mips/mm/init.c
+++ b/arch/mips/mm/init.c
@@ -227,7 +227,7 @@ void __init mem_init(void)
 	for (tmp = 0; tmp < max_low_pfn; tmp++)
 		if (page_is_ram(tmp)) {
 			ram++;
-			if (PageReserved(mem_map+tmp))
+			if (PageReserved(pfn_to_page(tmp)))
 				reservedpages++;
 		}
 
diff --git a/arch/mips/momentum/jaguar_atx/dbg_io.c b/arch/mips/momentum/jaguar_atx/dbg_io.c
index 542eac82b63c..d7dea0a136aa 100644
--- a/arch/mips/momentum/jaguar_atx/dbg_io.c
+++ b/arch/mips/momentum/jaguar_atx/dbg_io.c
@@ -73,7 +73,7 @@ void debugInit(uint32 baud, uint8 data, uint8 parity, uint8 stop)
 	/* disable interrupts */
 	UART16550_WRITE(OFS_INTR_ENABLE, 0);
 
-	/* set up buad rate */
+	/* set up baud rate */
 	{
 		uint32 divisor;
 
diff --git a/arch/mips/momentum/ocelot_c/dbg_io.c b/arch/mips/momentum/ocelot_c/dbg_io.c
index 8720bccfdea2..f0a6a38fcf4d 100644
--- a/arch/mips/momentum/ocelot_c/dbg_io.c
+++ b/arch/mips/momentum/ocelot_c/dbg_io.c
@@ -73,7 +73,7 @@ void debugInit(uint32 baud, uint8 data, uint8 parity, uint8 stop)
 	/* disable interrupts */
 	UART16550_WRITE(OFS_INTR_ENABLE, 0);
 
-	/* set up buad rate */
+	/* set up baud rate */
 	{
 		uint32 divisor;
 
diff --git a/arch/mips/momentum/ocelot_g/dbg_io.c b/arch/mips/momentum/ocelot_g/dbg_io.c
index 8720bccfdea2..f0a6a38fcf4d 100644
--- a/arch/mips/momentum/ocelot_g/dbg_io.c
+++ b/arch/mips/momentum/ocelot_g/dbg_io.c
@@ -73,7 +73,7 @@ void debugInit(uint32 baud, uint8 data, uint8 parity, uint8 stop)
 	/* disable interrupts */
 	UART16550_WRITE(OFS_INTR_ENABLE, 0);
 
-	/* set up buad rate */
+	/* set up baud rate */
 	{
 		uint32 divisor;
 
diff --git a/arch/mips/oprofile/common.c b/arch/mips/oprofile/common.c
index 91b799d2cd88..c31e4cff64e0 100644
--- a/arch/mips/oprofile/common.c
+++ b/arch/mips/oprofile/common.c
@@ -14,8 +14,8 @@
 
 #include "op_impl.h"
 
-extern struct op_mips_model op_model_mipsxx __attribute__((weak));
-extern struct op_mips_model op_model_rm9000 __attribute__((weak));
+extern struct op_mips_model op_model_mipsxx_ops __attribute__((weak));
+extern struct op_mips_model op_model_rm9000_ops __attribute__((weak));
 
 static struct op_mips_model *model;
 
@@ -83,11 +83,11 @@ int __init oprofile_arch_init(struct oprofile_operations *ops)
 	case CPU_74K:
 	case CPU_SB1:
 	case CPU_SB1A:
-		lmodel = &op_model_mipsxx;
+		lmodel = &op_model_mipsxx_ops;
 		break;
 
 	case CPU_RM9000:
-		lmodel = &op_model_rm9000;
+		lmodel = &op_model_rm9000_ops;
 		break;
 	};
 
diff --git a/arch/mips/oprofile/op_model_mipsxx.c b/arch/mips/oprofile/op_model_mipsxx.c
index e7ce92391303..f26a00e13204 100644
--- a/arch/mips/oprofile/op_model_mipsxx.c
+++ b/arch/mips/oprofile/op_model_mipsxx.c
@@ -23,7 +23,7 @@
 
 #define M_COUNTER_OVERFLOW		(1UL    << 31)
 
-struct op_mips_model op_model_mipsxx;
+struct op_mips_model op_model_mipsxx_ops;
 
 static struct mipsxx_register_config {
 	unsigned int control[4];
@@ -34,7 +34,7 @@ static struct mipsxx_register_config {
 
 static void mipsxx_reg_setup(struct op_counter_config *ctr)
 {
-	unsigned int counters = op_model_mipsxx.num_counters;
+	unsigned int counters = op_model_mipsxx_ops.num_counters;
 	int i;
 
 	/* Compute the performance counter control word.  */
@@ -62,7 +62,7 @@ static void mipsxx_reg_setup(struct op_counter_config *ctr)
 
 static void mipsxx_cpu_setup (void *args)
 {
-	unsigned int counters = op_model_mipsxx.num_counters;
+	unsigned int counters = op_model_mipsxx_ops.num_counters;
 
 	switch (counters) {
 	case 4:
@@ -83,7 +83,7 @@ static void mipsxx_cpu_setup (void *args)
 /* Start all counters on current CPU */
 static void mipsxx_cpu_start(void *args)
 {
-	unsigned int counters = op_model_mipsxx.num_counters;
+	unsigned int counters = op_model_mipsxx_ops.num_counters;
 
 	switch (counters) {
 	case 4:
@@ -100,7 +100,7 @@ static void mipsxx_cpu_start(void *args)
 /* Stop all counters on current CPU */
 static void mipsxx_cpu_stop(void *args)
 {
-	unsigned int counters = op_model_mipsxx.num_counters;
+	unsigned int counters = op_model_mipsxx_ops.num_counters;
 
 	switch (counters) {
 	case 4:
@@ -116,7 +116,7 @@ static void mipsxx_cpu_stop(void *args)
 
 static int mipsxx_perfcount_handler(struct pt_regs *regs)
 {
-	unsigned int counters = op_model_mipsxx.num_counters;
+	unsigned int counters = op_model_mipsxx_ops.num_counters;
 	unsigned int control;
 	unsigned int counter;
 	int handled = 0;
@@ -187,37 +187,37 @@ static int __init mipsxx_init(void)
 
 	reset_counters(counters);
 
-	op_model_mipsxx.num_counters = counters;
+	op_model_mipsxx_ops.num_counters = counters;
 	switch (current_cpu_data.cputype) {
 	case CPU_20KC:
-		op_model_mipsxx.cpu_type = "mips/20K";
+		op_model_mipsxx_ops.cpu_type = "mips/20K";
 		break;
 
 	case CPU_24K:
-		op_model_mipsxx.cpu_type = "mips/24K";
+		op_model_mipsxx_ops.cpu_type = "mips/24K";
 		break;
 
 	case CPU_25KF:
-		op_model_mipsxx.cpu_type = "mips/25K";
+		op_model_mipsxx_ops.cpu_type = "mips/25K";
 		break;
 
 #ifndef CONFIG_SMP
 	case CPU_34K:
-		op_model_mipsxx.cpu_type = "mips/34K";
+		op_model_mipsxx_ops.cpu_type = "mips/34K";
 		break;
 
 	case CPU_74K:
-		op_model_mipsxx.cpu_type = "mips/74K";
+		op_model_mipsxx_ops.cpu_type = "mips/74K";
 		break;
 #endif
 
 	case CPU_5KC:
-		op_model_mipsxx.cpu_type = "mips/5K";
+		op_model_mipsxx_ops.cpu_type = "mips/5K";
 		break;
 
 	case CPU_SB1:
 	case CPU_SB1A:
-		op_model_mipsxx.cpu_type = "mips/sb1";
+		op_model_mipsxx_ops.cpu_type = "mips/sb1";
 		break;
 
 	default:
@@ -233,12 +233,12 @@ static int __init mipsxx_init(void)
 
 static void mipsxx_exit(void)
 {
-	reset_counters(op_model_mipsxx.num_counters);
+	reset_counters(op_model_mipsxx_ops.num_counters);
 
 	perf_irq = null_perf_irq;
 }
 
-struct op_mips_model op_model_mipsxx = {
+struct op_mips_model op_model_mipsxx_ops = {
 	.reg_setup	= mipsxx_reg_setup,
 	.cpu_setup	= mipsxx_cpu_setup,
 	.init		= mipsxx_init,
diff --git a/arch/mips/oprofile/op_model_rm9000.c b/arch/mips/oprofile/op_model_rm9000.c
index 9b75e41c78ef..b7063fefa65b 100644
--- a/arch/mips/oprofile/op_model_rm9000.c
+++ b/arch/mips/oprofile/op_model_rm9000.c
@@ -126,7 +126,7 @@ static void rm9000_exit(void)
 	free_irq(rm9000_perfcount_irq, NULL);
 }
 
-struct op_mips_model op_model_rm9000 = {
+struct op_mips_model op_model_rm9000_ops = {
 	.reg_setup	= rm9000_reg_setup,
 	.cpu_setup	= rm9000_cpu_setup,
 	.init		= rm9000_init,
diff --git a/arch/mips/sgi-ip32/ip32-irq.c b/arch/mips/sgi-ip32/ip32-irq.c
index de01c9815bdd..8ba08047d164 100644
--- a/arch/mips/sgi-ip32/ip32-irq.c
+++ b/arch/mips/sgi-ip32/ip32-irq.c
@@ -31,12 +31,12 @@
 /* issue a PIO read to make sure no PIO writes are pending */
 static void inline flush_crime_bus(void)
 {
-	volatile unsigned long junk = crime->control;
+	crime->control;
 }
 
 static void inline flush_mace_bus(void)
 {
-	volatile unsigned long junk = mace->perif.ctrl.misc;
+	mace->perif.ctrl.misc;
 }
 
 #undef DEBUG_IRQ