32 files changed, 80 insertions, 97 deletions

diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 8e256cc5dcd9..351c80fbba7e 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -997,9 +997,6 @@ config IRQ_GT641XX
 config IRQ_GIC
         bool
 
-config IRQ_CPU_OCTEON
-        bool
-
 config MIPS_BOARDS_GEN
         bool
 
@@ -1359,8 +1356,6 @@ config CPU_SB1
 config CPU_CAVIUM_OCTEON
         bool "Cavium Octeon processor"
         depends on SYS_HAS_CPU_CAVIUM_OCTEON
-        select IRQ_CPU
-        select IRQ_CPU_OCTEON
         select CPU_HAS_PREFETCH
         select CPU_SUPPORTS_64BIT_KERNEL
         select SYS_SUPPORTS_SMP
diff --git a/arch/mips/alchemy/devboards/db1x00/board_setup.c b/arch/mips/alchemy/devboards/db1x00/board_setup.c
index 05f120ff90f9..5c956fe8760f 100644
--- a/arch/mips/alchemy/devboards/db1x00/board_setup.c
+++ b/arch/mips/alchemy/devboards/db1x00/board_setup.c
@@ -127,13 +127,10 @@ const char *get_system_type(void)
 void __init board_setup(void)
 {
         unsigned long bcsr1, bcsr2;
-        u32 pin_func;
 
         bcsr1 = DB1000_BCSR_PHYS_ADDR;
         bcsr2 = DB1000_BCSR_PHYS_ADDR + DB1000_BCSR_HEXLED_OFS;
 
-        pin_func = 0;
-
 #ifdef CONFIG_MIPS_DB1000
         printk(KERN_INFO "AMD Alchemy Au1000/Db1000 Board\n");
 #endif
@@ -164,12 +161,16 @@ void __init board_setup(void)
         /* Not valid for Au1550 */
 #if defined(CONFIG_IRDA) && \
    (defined(CONFIG_SOC_AU1000) || defined(CONFIG_SOC_AU1100))
-        /* Set IRFIRSEL instead of GPIO15 */
-        pin_func = au_readl(SYS_PINFUNC) | SYS_PF_IRF;
-        au_writel(pin_func, SYS_PINFUNC);
-        /* Power off until the driver is in use */
-        bcsr_mod(BCSR_RESETS, BCSR_RESETS_IRDA_MODE_MASK,
-                                BCSR_RESETS_IRDA_MODE_OFF);
+        {
+                u32 pin_func;
+
+                /* Set IRFIRSEL instead of GPIO15 */
+                pin_func = au_readl(SYS_PINFUNC) | SYS_PF_IRF;
+                au_writel(pin_func, SYS_PINFUNC);
+                /* Power off until the driver is in use */
+                bcsr_mod(BCSR_RESETS, BCSR_RESETS_IRDA_MODE_MASK,
+                         BCSR_RESETS_IRDA_MODE_OFF);
+        }
 #endif
         bcsr_write(BCSR_PCMCIA, 0);     /* turn off PCMCIA power */
 
@@ -177,31 +178,35 @@ void __init board_setup(void)
         alchemy_gpio1_input_enable();
 
 #ifdef CONFIG_MIPS_MIRAGE
-        /* GPIO[20] is output */
-        alchemy_gpio_direction_output(20, 0);
+        {
+                u32 pin_func;
 
-        /* Set GPIO[210:208] instead of SSI_0 */
-        pin_func = au_readl(SYS_PINFUNC) | SYS_PF_S0;
+                /* GPIO[20] is output */
+                alchemy_gpio_direction_output(20, 0);
 
-        /* Set GPIO[215:211] for LEDs */
-        pin_func |= 5 << 2;
+                /* Set GPIO[210:208] instead of SSI_0 */
+                pin_func = au_readl(SYS_PINFUNC) | SYS_PF_S0;
 
-        /* Set GPIO[214:213] for more LEDs */
-        pin_func |= 5 << 12;
+                /* Set GPIO[215:211] for LEDs */
+                pin_func |= 5 << 2;
 
-        /* Set GPIO[207:200] instead of PCMCIA/LCD */
-        pin_func |= SYS_PF_LCD | SYS_PF_PC;
-        au_writel(pin_func, SYS_PINFUNC);
+                /* Set GPIO[214:213] for more LEDs */
+                pin_func |= 5 << 12;
 
-        /*
-         * Enable speaker amplifier.  This should
-         * be part of the audio driver.
-         */
-        alchemy_gpio_direction_output(209, 1);
+                /* Set GPIO[207:200] instead of PCMCIA/LCD */
+                pin_func |= SYS_PF_LCD | SYS_PF_PC;
+                au_writel(pin_func, SYS_PINFUNC);
 
-        pm_power_off = mirage_power_off;
-        _machine_halt = mirage_power_off;
-        _machine_restart = (void(*)(char *))mips_softreset;
+                /*
+                 * Enable speaker amplifier.  This should
+                 * be part of the audio driver.
+                 */
+                alchemy_gpio_direction_output(209, 1);
+
+                pm_power_off = mirage_power_off;
+                _machine_halt = mirage_power_off;
+                _machine_restart = (void(*)(char *))mips_softreset;
+        }
 #endif
 
 #ifdef CONFIG_MIPS_BOSPORUS
diff --git a/arch/mips/alchemy/xxs1500/init.c b/arch/mips/alchemy/xxs1500/init.c
index 15125c2fda7d..34a90a4bb6f4 100644
--- a/arch/mips/alchemy/xxs1500/init.c
+++ b/arch/mips/alchemy/xxs1500/init.c
@@ -51,10 +51,9 @@ void __init prom_init(void)
         prom_init_cmdline();
 
         memsize_str = prom_getenv("memsize");
-        if (!memsize_str)
+        if (!memsize_str || strict_strtoul(memsize_str, 0, &memsize))
                 memsize = 0x04000000;
-        else
-                strict_strtoul(memsize_str, 0, &memsize);
+
         add_memory_region(0, memsize, BOOT_MEM_RAM);
 }
 
diff --git a/arch/mips/boot/compressed/calc_vmlinuz_load_addr.c b/arch/mips/boot/compressed/calc_vmlinuz_load_addr.c
index 88c9d963be88..9a6243676e22 100644
--- a/arch/mips/boot/compressed/calc_vmlinuz_load_addr.c
+++ b/arch/mips/boot/compressed/calc_vmlinuz_load_addr.c
@@ -16,8 +16,8 @@
 
 int main(int argc, char *argv[])
 {
+        unsigned long long vmlinux_size, vmlinux_load_addr, vmlinuz_load_addr;
         struct stat sb;
-        uint64_t vmlinux_size, vmlinux_load_addr, vmlinuz_load_addr;
 
         if (argc != 3) {
                 fprintf(stderr, "Usage: %s <pathname> <vmlinux_load_addr>\n",
diff --git a/arch/mips/cavium-octeon/Kconfig b/arch/mips/cavium-octeon/Kconfig
index caae22858163..cad555ebeca3 100644
--- a/arch/mips/cavium-octeon/Kconfig
+++ b/arch/mips/cavium-octeon/Kconfig
@@ -1,11 +1,7 @@
-config CAVIUM_OCTEON_SPECIFIC_OPTIONS
-        bool "Enable Octeon specific options"
-        depends on CPU_CAVIUM_OCTEON
-        default "y"
+if CPU_CAVIUM_OCTEON
 
 config CAVIUM_CN63XXP1
         bool "Enable CN63XXP1 errata worarounds"
-        depends on CAVIUM_OCTEON_SPECIFIC_OPTIONS
         default "n"
         help
           The CN63XXP1 chip requires build time workarounds to
@@ -16,7 +12,6 @@ config CAVIUM_CN63XXP1
 
 config CAVIUM_OCTEON_2ND_KERNEL
         bool "Build the kernel to be used as a 2nd kernel on the same chip"
-        depends on CAVIUM_OCTEON_SPECIFIC_OPTIONS
         default "n"
         help
           This option configures this kernel to be linked at a different
@@ -26,7 +21,6 @@ config CAVIUM_OCTEON_2ND_KERNEL
 
 config CAVIUM_OCTEON_HW_FIX_UNALIGNED
         bool "Enable hardware fixups of unaligned loads and stores"
-        depends on CAVIUM_OCTEON_SPECIFIC_OPTIONS
         default "y"
         help
           Configure the Octeon hardware to automatically fix unaligned loads
@@ -38,7 +32,6 @@ config CAVIUM_OCTEON_HW_FIX_UNALIGNED
 
 config CAVIUM_OCTEON_CVMSEG_SIZE
         int "Number of L1 cache lines reserved for CVMSEG memory"
-        depends on CAVIUM_OCTEON_SPECIFIC_OPTIONS
         range 0 54
         default 1
         help
@@ -50,7 +43,6 @@ config CAVIUM_OCTEON_CVMSEG_SIZE
 
 config CAVIUM_OCTEON_LOCK_L2
         bool "Lock often used kernel code in the L2"
-        depends on CAVIUM_OCTEON_SPECIFIC_OPTIONS
         default "y"
         help
           Enable locking parts of the kernel into the L2 cache.
@@ -93,7 +85,6 @@ config CAVIUM_OCTEON_LOCK_L2_MEMCPY
 config ARCH_SPARSEMEM_ENABLE
         def_bool y
         select SPARSEMEM_STATIC
-        depends on CPU_CAVIUM_OCTEON
 
 config CAVIUM_OCTEON_HELPER
         def_bool y
@@ -107,6 +98,8 @@ config NEED_SG_DMA_LENGTH
 
 config SWIOTLB
         def_bool y
-        depends on CPU_CAVIUM_OCTEON
         select IOMMU_HELPER
         select NEED_SG_DMA_LENGTH
+
+
+endif # CPU_CAVIUM_OCTEON
diff --git a/arch/mips/include/asm/cache.h b/arch/mips/include/asm/cache.h
index 650ac9ba734c..b4db69fbc40c 100644
--- a/arch/mips/include/asm/cache.h
+++ b/arch/mips/include/asm/cache.h
@@ -17,6 +17,6 @@
 #define SMP_CACHE_SHIFT         L1_CACHE_SHIFT
 #define SMP_CACHE_BYTES         L1_CACHE_BYTES
 
-#define __read_mostly __attribute__((__section__(".data.read_mostly")))
+#define __read_mostly __attribute__((__section__(".data..read_mostly")))
 
 #endif /* _ASM_CACHE_H */
diff --git a/arch/mips/include/asm/cevt-r4k.h b/arch/mips/include/asm/cevt-r4k.h
index fa4328f9124f..65f9bdd02f1f 100644
--- a/arch/mips/include/asm/cevt-r4k.h
+++ b/arch/mips/include/asm/cevt-r4k.h
@@ -14,6 +14,9 @@
 #ifndef __ASM_CEVT_R4K_H
 #define __ASM_CEVT_R4K_H
 
+#include <linux/clockchips.h>
+#include <asm/time.h>
+
 DECLARE_PER_CPU(struct clock_event_device, mips_clockevent_device);
 
 void mips_event_handler(struct clock_event_device *dev);
diff --git a/arch/mips/include/asm/hugetlb.h b/arch/mips/include/asm/hugetlb.h
index f5e856015329..c565b7c3f0b5 100644
--- a/arch/mips/include/asm/hugetlb.h
+++ b/arch/mips/include/asm/hugetlb.h
@@ -70,6 +70,7 @@ static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
 static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
                                          unsigned long addr, pte_t *ptep)
 {
+        flush_tlb_mm(vma->vm_mm);
 }
 
 static inline int huge_pte_none(pte_t pte)
diff --git a/arch/mips/include/asm/mach-bcm63xx/bcm963xx_tag.h b/arch/mips/include/asm/mach-bcm63xx/bcm963xx_tag.h
index 32978d32561a..ed72e6a26b73 100644
--- a/arch/mips/include/asm/mach-bcm63xx/bcm963xx_tag.h
+++ b/arch/mips/include/asm/mach-bcm63xx/bcm963xx_tag.h
@@ -88,7 +88,7 @@ struct bcm_tag {
         char kernel_crc[CRC_LEN];
         /* 228-235: Unused at present */
         char reserved1[8];
-        /* 236-239: CRC32 of header excluding tagVersion */
+        /* 236-239: CRC32 of header excluding last 20 bytes */
         char header_crc[CRC_LEN];
         /* 240-255: Unused at present */
         char reserved2[16];
diff --git a/arch/mips/jazz/jazzdma.c b/arch/mips/jazz/jazzdma.c
index 9ce9f64cb76f..2d8e447cb828 100644
--- a/arch/mips/jazz/jazzdma.c
+++ b/arch/mips/jazz/jazzdma.c
@@ -211,7 +211,7 @@ EXPORT_SYMBOL(vdma_free);
  */
 int vdma_remap(unsigned long laddr, unsigned long paddr, unsigned long size)
 {
-        int first, pages, npages;
+        int first, pages;
 
         if (laddr > 0xffffff) {
                 if (vdma_debug)
@@ -228,8 +228,7 @@ int vdma_remap(unsigned long laddr, unsigned long paddr, unsigned long size)
                 return -EINVAL; /* invalid physical address */
         }
 
-        npages = pages =
-            (((paddr & (VDMA_PAGESIZE - 1)) + size) >> 12) + 1;
+        pages = (((paddr & (VDMA_PAGESIZE - 1)) + size) >> 12) + 1;
         first = laddr >> 12;
         if (vdma_debug)
                 printk("vdma_remap: first=%x, pages=%x\n", first, pages);
diff --git a/arch/mips/jz4740/dma.c b/arch/mips/jz4740/dma.c
index 5ebe75a68350..d7feb898692c 100644
--- a/arch/mips/jz4740/dma.c
+++ b/arch/mips/jz4740/dma.c
@@ -242,9 +242,7 @@ EXPORT_SYMBOL_GPL(jz4740_dma_get_residue);
 
 static void jz4740_dma_chan_irq(struct jz4740_dma_chan *dma)
 {
-        uint32_t status;
-
-        status = jz4740_dma_read(JZ_REG_DMA_STATUS_CTRL(dma->id));
+        (void) jz4740_dma_read(JZ_REG_DMA_STATUS_CTRL(dma->id));
 
         jz4740_dma_write_mask(JZ_REG_DMA_STATUS_CTRL(dma->id), 0,
                 JZ_DMA_STATUS_CTRL_ENABLE | JZ_DMA_STATUS_CTRL_TRANSFER_DONE);
diff --git a/arch/mips/jz4740/time.c b/arch/mips/jz4740/time.c
index fe01678d94fd..eaa853a54af6 100644
--- a/arch/mips/jz4740/time.c
+++ b/arch/mips/jz4740/time.c
@@ -89,7 +89,7 @@ static int jz4740_clockevent_set_next(unsigned long evt,
 
 static struct clock_event_device jz4740_clockevent = {
         .name = "jz4740-timer",
-        .features = CLOCK_EVT_FEAT_PERIODIC,
+        .features = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT,
         .set_next_event = jz4740_clockevent_set_next,
         .set_mode = jz4740_clockevent_set_mode,
         .rating = 200,
diff --git a/arch/mips/jz4740/timer.c b/arch/mips/jz4740/timer.c
index b2c015129055..654d5c3900b6 100644
--- a/arch/mips/jz4740/timer.c
+++ b/arch/mips/jz4740/timer.c
@@ -27,11 +27,13 @@ void jz4740_timer_enable_watchdog(void)
 {
         writel(BIT(16), jz4740_timer_base + JZ_REG_TIMER_STOP_CLEAR);
 }
+EXPORT_SYMBOL_GPL(jz4740_timer_enable_watchdog);
 
 void jz4740_timer_disable_watchdog(void)
 {
         writel(BIT(16), jz4740_timer_base + JZ_REG_TIMER_STOP_SET);
 }
+EXPORT_SYMBOL_GPL(jz4740_timer_disable_watchdog);
 
 void __init jz4740_timer_init(void)
 {
diff --git a/arch/mips/kernel/ftrace.c b/arch/mips/kernel/ftrace.c
index 94ca2b018af7..feb8021a305f 100644
--- a/arch/mips/kernel/ftrace.c
+++ b/arch/mips/kernel/ftrace.c
@@ -23,6 +23,7 @@
 
 #define JAL 0x0c000000          /* jump & link: ip --> ra, jump to target */
 #define ADDR_MASK 0x03ffffff    /*  op_code|addr : 31...26|25 ....0 */
+#define JUMP_RANGE_MASK ((1UL << 28) - 1)
 
 #define INSN_NOP 0x00000000     /* nop */
 #define INSN_JAL(addr)  \
@@ -44,12 +45,12 @@ static inline void ftrace_dyn_arch_init_insns(void)
 
         /* jal (ftrace_caller + 8), jump over the first two instruction */
         buf = (u32 *)&insn_jal_ftrace_caller;
-        uasm_i_jal(&buf, (FTRACE_ADDR + 8));
+        uasm_i_jal(&buf, (FTRACE_ADDR + 8) & JUMP_RANGE_MASK);
 
 #ifdef CONFIG_FUNCTION_GRAPH_TRACER
         /* j ftrace_graph_caller */
         buf = (u32 *)&insn_j_ftrace_graph_caller;
-        uasm_i_j(&buf, (unsigned long)ftrace_graph_caller);
+        uasm_i_j(&buf, (unsigned long)ftrace_graph_caller & JUMP_RANGE_MASK);
 #endif
 }
 
diff --git a/arch/mips/kernel/ptrace.c b/arch/mips/kernel/ptrace.c
index d21c388c0116..584e6b55c865 100644
--- a/arch/mips/kernel/ptrace.c
+++ b/arch/mips/kernel/ptrace.c
@@ -540,8 +540,8 @@ asmlinkage void do_syscall_trace(struct pt_regs *regs, int entryexit)
                 secure_computing(regs->regs[2]);
 
         if (unlikely(current->audit_context) && entryexit)
-                audit_syscall_exit(AUDITSC_RESULT(regs->regs[2]),
-                                   regs->regs[2]);
+                audit_syscall_exit(AUDITSC_RESULT(regs->regs[7]),
+                                   -regs->regs[2]);
 
         if (!(current->ptrace & PT_PTRACED))
                 goto out;
diff --git a/arch/mips/kernel/scall32-o32.S b/arch/mips/kernel/scall32-o32.S
index 7f5468b38d4c..7f1377eb22d3 100644
--- a/arch/mips/kernel/scall32-o32.S
+++ b/arch/mips/kernel/scall32-o32.S
@@ -565,7 +565,7 @@ einval:	li	v0, -ENOSYS
         sys     sys_ioprio_get          2       /* 4315 */
         sys     sys_utimensat           4
         sys     sys_signalfd            3
-        sys     sys_ni_syscall          0
+        sys     sys_ni_syscall          0       /* was timerfd */
         sys     sys_eventfd             1
         sys     sys_fallocate           6       /* 4320 */
         sys     sys_timerfd_create      2
diff --git a/arch/mips/kernel/scall64-64.S b/arch/mips/kernel/scall64-64.S
index a2e1fcbc41dc..7c0ef7f128bf 100644
--- a/arch/mips/kernel/scall64-64.S
+++ b/arch/mips/kernel/scall64-64.S
@@ -404,7 +404,7 @@ sys_call_table:
         PTR     sys_ioprio_get
         PTR     sys_utimensat                   /* 5275 */
         PTR     sys_signalfd
-        PTR     sys_ni_syscall
+        PTR     sys_ni_syscall                  /* was timerfd */
         PTR     sys_eventfd
         PTR     sys_fallocate
         PTR     sys_timerfd_create              /* 5280 */
diff --git a/arch/mips/kernel/scall64-n32.S b/arch/mips/kernel/scall64-n32.S
index b2c7624995b8..de6c5563beab 100644
--- a/arch/mips/kernel/scall64-n32.S
+++ b/arch/mips/kernel/scall64-n32.S
@@ -403,7 +403,7 @@ EXPORT(sysn32_call_table)
         PTR     sys_ioprio_get
         PTR     compat_sys_utimensat
         PTR     compat_sys_signalfd             /* 6280 */
-        PTR     sys_ni_syscall
+        PTR     sys_ni_syscall                  /* was timerfd */
         PTR     sys_eventfd
         PTR     sys_fallocate
         PTR     sys_timerfd_create
diff --git a/arch/mips/kernel/scall64-o32.S b/arch/mips/kernel/scall64-o32.S
index 049a9c8c49a0..b0541dda8830 100644
--- a/arch/mips/kernel/scall64-o32.S
+++ b/arch/mips/kernel/scall64-o32.S
@@ -522,7 +522,7 @@ sys_call_table:
         PTR     sys_ioprio_get                  /* 4315 */
         PTR     compat_sys_utimensat
         PTR     compat_sys_signalfd
-        PTR     sys_ni_syscall
+        PTR     sys_ni_syscall                  /* was timerfd */
         PTR     sys_eventfd
         PTR     sys32_fallocate                 /* 4320 */
         PTR     sys_timerfd_create
diff --git a/arch/mips/kernel/vmlinux.lds.S b/arch/mips/kernel/vmlinux.lds.S
index 832afbb87588..e4b0b0bec039 100644
--- a/arch/mips/kernel/vmlinux.lds.S
+++ b/arch/mips/kernel/vmlinux.lds.S
@@ -74,6 +74,7 @@ SECTIONS
                 INIT_TASK_DATA(PAGE_SIZE)
                 NOSAVE_DATA
                 CACHELINE_ALIGNED_DATA(1 << CONFIG_MIPS_L1_CACHE_SHIFT)
+                READ_MOSTLY_DATA(1 << CONFIG_MIPS_L1_CACHE_SHIFT)
                 DATA_DATA
                 CONSTRUCTORS
         }
diff --git a/arch/mips/loongson/common/env.c b/arch/mips/loongson/common/env.c
index 11b193f848f8..d93830ad6113 100644
--- a/arch/mips/loongson/common/env.c
+++ b/arch/mips/loongson/common/env.c
@@ -29,9 +29,10 @@ unsigned long memsize, highmemsize;
 
 #define parse_even_earlier(res, option, p)                              \
 do {                                                                    \
-        int ret;                                                        \
+        unsigned int tmp __maybe_unused;                                \
+                                                                        \
         if (strncmp(option, (char *)p, strlen(option)) == 0)            \
-                ret = strict_strtol((char *)p + strlen(option"="), 10, &res); \
+                tmp = strict_strtol((char *)p + strlen(option"="), 10, &res); \
 } while (0)
 
 void __init prom_init_env(void)
diff --git a/arch/mips/mm/c-r4k.c b/arch/mips/mm/c-r4k.c
index b4923a75cb4b..71bddf8f7d25 100644
--- a/arch/mips/mm/c-r4k.c
+++ b/arch/mips/mm/c-r4k.c
@@ -1075,7 +1075,6 @@ static int __cpuinit probe_scache(void)
         unsigned long flags, addr, begin, end, pow2;
         unsigned int config = read_c0_config();
         struct cpuinfo_mips *c = &current_cpu_data;
-        int tmp;
 
         if (config & CONF_SC)
                 return 0;
@@ -1108,7 +1107,6 @@ static int __cpuinit probe_scache(void)
 
         /* Now search for the wrap around point. */
         pow2 = (128 * 1024);
-        tmp = 0;
         for (addr = begin + (128 * 1024); addr < end; addr = begin + pow2) {
                 cache_op(Index_Load_Tag_SD, addr);
                 __asm__ __volatile__("nop; nop; nop; nop;"); /* hazard... */
diff --git a/arch/mips/mm/tlbex.c b/arch/mips/mm/tlbex.c
index 5ef294fbb6e7..f5734c2c8097 100644
--- a/arch/mips/mm/tlbex.c
+++ b/arch/mips/mm/tlbex.c
@@ -1151,8 +1151,8 @@ static void __cpuinit build_r4000_tlb_refill_handler(void)
         struct uasm_reloc *r = relocs;
         u32 *f;
         unsigned int final_len;
-        struct mips_huge_tlb_info htlb_info;
-        enum vmalloc64_mode vmalloc_mode;
+        struct mips_huge_tlb_info htlb_info __maybe_unused;
+        enum vmalloc64_mode vmalloc_mode __maybe_unused;
 
         memset(tlb_handler, 0, sizeof(tlb_handler));
         memset(labels, 0, sizeof(labels));
diff --git a/arch/mips/mti-malta/malta-init.c b/arch/mips/mti-malta/malta-init.c
index 414f0c99b196..31180c321a1a 100644
--- a/arch/mips/mti-malta/malta-init.c
+++ b/arch/mips/mti-malta/malta-init.c
@@ -193,8 +193,6 @@ extern struct plat_smp_ops msmtc_smp_ops;
 
 void __init prom_init(void)
 {
-        int result;
-
         prom_argc = fw_arg0;
         _prom_argv = (int *) fw_arg1;
         _prom_envp = (int *) fw_arg2;
@@ -360,20 +358,14 @@ void __init prom_init(void)
 #ifdef CONFIG_SERIAL_8250_CONSOLE
         console_config();
 #endif
-        /* Early detection of CMP support */
-        result = gcmp_probe(GCMP_BASE_ADDR, GCMP_ADDRSPACE_SZ);
-
 #ifdef CONFIG_MIPS_CMP
-        if (result)
+        /* Early detection of CMP support */
+        if (gcmp_probe(GCMP_BASE_ADDR, GCMP_ADDRSPACE_SZ))
                 register_smp_ops(&cmp_smp_ops);
+        else
 #endif
 #ifdef CONFIG_MIPS_MT_SMP
-#ifdef CONFIG_MIPS_CMP
-        if (!result)
                 register_smp_ops(&vsmp_smp_ops);
-#else
-        register_smp_ops(&vsmp_smp_ops);
-#endif
 #endif
 #ifdef CONFIG_MIPS_MT_SMTC
         register_smp_ops(&msmtc_smp_ops);
diff --git a/arch/mips/mti-malta/malta-int.c b/arch/mips/mti-malta/malta-int.c
index 9027061f0ead..e85c977328da 100644
--- a/arch/mips/mti-malta/malta-int.c
+++ b/arch/mips/mti-malta/malta-int.c
@@ -56,7 +56,6 @@ static DEFINE_RAW_SPINLOCK(mips_irq_lock);
 static inline int mips_pcibios_iack(void)
 {
         int irq;
-        u32 dummy;
 
         /*
          * Determine highest priority pending interrupt by performing
@@ -83,7 +82,7 @@ static inline int mips_pcibios_iack(void)
                 BONITO_PCIMAP_CFG = 0x20000;
 
                 /* Flush Bonito register block */
-                dummy = BONITO_PCIMAP_CFG;
+                (void) BONITO_PCIMAP_CFG;
                 iob();    /* sync */
 
                 irq = __raw_readl((u32 *)_pcictrl_bonito_pcicfg);
diff --git a/arch/mips/pmc-sierra/msp71xx/msp_irq_per.c b/arch/mips/pmc-sierra/msp71xx/msp_irq_per.c
index f9b9dcdfa9dd..98fd0099d964 100644
--- a/arch/mips/pmc-sierra/msp71xx/msp_irq_per.c
+++ b/arch/mips/pmc-sierra/msp71xx/msp_irq_per.c
@@ -97,7 +97,7 @@ static int msp_per_irq_set_affinity(struct irq_data *d,
 
 static struct irq_chip msp_per_irq_controller = {
         .name = "MSP_PER",
-        .irq_enable = unmask_per_irq.
+        .irq_enable = unmask_per_irq,
         .irq_disable = mask_per_irq,
         .irq_ack = msp_per_irq_ack,
 #ifdef CONFIG_SMP
diff --git a/arch/mips/power/hibernate.S b/arch/mips/power/hibernate.S
index dbb5c7b4b70f..f8a751c03282 100644
--- a/arch/mips/power/hibernate.S
+++ b/arch/mips/power/hibernate.S
@@ -35,7 +35,7 @@ LEAF(swsusp_arch_resume)
 0:
         PTR_L t1, PBE_ADDRESS(t0)   /* source */
         PTR_L t2, PBE_ORIG_ADDRESS(t0) /* destination */
-        PTR_ADDIU t3, t1, PAGE_SIZE
+        PTR_ADDU t3, t1, PAGE_SIZE
 1:
         REG_L t8, (t1)
         REG_S t8, (t2)
diff --git a/arch/mips/sgi-ip22/ip22-platform.c b/arch/mips/sgi-ip22/ip22-platform.c
index deddbf0ebe5c..698904daf901 100644
--- a/arch/mips/sgi-ip22/ip22-platform.c
+++ b/arch/mips/sgi-ip22/ip22-platform.c
@@ -132,7 +132,7 @@ static struct platform_device eth1_device = {
  */
 static int __init sgiseeq_devinit(void)
 {
-        unsigned int tmp;
+        unsigned int pbdma __maybe_unused;
         int res, i;
 
         eth0_pd.hpc = hpc3c0;
@@ -151,7 +151,7 @@ static int __init sgiseeq_devinit(void)
 
         /* Second HPC is missing? */
         if (ip22_is_fullhouse() ||
-            get_dbe(tmp, (unsigned int *)&hpc3c1->pbdma[1]))
+            get_dbe(pbdma, (unsigned int *)&hpc3c1->pbdma[1]))
                 return 0;
 
         sgimc->giopar |= SGIMC_GIOPAR_MASTEREXP1 | SGIMC_GIOPAR_EXP164 |
diff --git a/arch/mips/sgi-ip22/ip22-time.c b/arch/mips/sgi-ip22/ip22-time.c
index 603fc91c1030..1a94c9894188 100644
--- a/arch/mips/sgi-ip22/ip22-time.c
+++ b/arch/mips/sgi-ip22/ip22-time.c
@@ -32,7 +32,7 @@
 static unsigned long dosample(void)
 {
         u32 ct0, ct1;
-        u8 msb, lsb;
+        u8 msb;
 
         /* Start the counter. */
         sgint->tcword = (SGINT_TCWORD_CNT2 | SGINT_TCWORD_CALL |
@@ -46,7 +46,7 @@ static unsigned long dosample(void)
         /* Latch and spin until top byte of counter2 is zero */
         do {
                 writeb(SGINT_TCWORD_CNT2 | SGINT_TCWORD_CLAT, &sgint->tcword);
-                lsb = readb(&sgint->tcnt2);
+                (void) readb(&sgint->tcnt2);
                 msb = readb(&sgint->tcnt2);
                 ct1 = read_c0_count();
         } while (msb);
diff --git a/arch/mips/sgi-ip27/ip27-hubio.c b/arch/mips/sgi-ip27/ip27-hubio.c
index a1fa4abb3f6a..cd0d5b06cd83 100644
--- a/arch/mips/sgi-ip27/ip27-hubio.c
+++ b/arch/mips/sgi-ip27/ip27-hubio.c
@@ -29,7 +29,6 @@ unsigned long hub_pio_map(cnodeid_t cnode, xwidgetnum_t widget,
                           unsigned long xtalk_addr, size_t size)
 {
         nasid_t nasid = COMPACT_TO_NASID_NODEID(cnode);
-        volatile hubreg_t junk;
         unsigned i;
 
         /* use small-window mapping if possible */
@@ -64,7 +63,7 @@ unsigned long hub_pio_map(cnodeid_t cnode, xwidgetnum_t widget,
                  * after we write it.
                  */
                 IIO_ITTE_PUT(nasid, i, HUB_PIO_MAP_TO_MEM, widget, xtalk_addr);
-                junk = HUB_L(IIO_ITTE_GET(nasid, i));
+                (void) HUB_L(IIO_ITTE_GET(nasid, i));
 
                 return NODE_BWIN_BASE(nasid, widget) + (xtalk_addr % BWIN_SIZE);
         }
diff --git a/arch/mips/sgi-ip27/ip27-klnuma.c b/arch/mips/sgi-ip27/ip27-klnuma.c
index c3d30a88daf3..1d1919a44e88 100644
--- a/arch/mips/sgi-ip27/ip27-klnuma.c
+++ b/arch/mips/sgi-ip27/ip27-klnuma.c
@@ -54,11 +54,8 @@ void __init setup_replication_mask(void)
 
 static __init void set_ktext_source(nasid_t client_nasid, nasid_t server_nasid)
 {
-        cnodeid_t client_cnode;
         kern_vars_t *kvp;
 
-        client_cnode = NASID_TO_COMPACT_NODEID(client_nasid);
-
         kvp = &hub_data(client_nasid)->kern_vars;
 
         KERN_VARS_ADDR(client_nasid) = (unsigned long)kvp;
diff --git a/arch/mips/sni/time.c b/arch/mips/sni/time.c
index c76151b56568..0904d4d30cb3 100644
--- a/arch/mips/sni/time.c
+++ b/arch/mips/sni/time.c
@@ -95,7 +95,7 @@ static void __init sni_a20r_timer_setup(void)
 static __init unsigned long dosample(void)
 {
         u32 ct0, ct1;
-        volatile u8 msb, lsb;
+        volatile u8 msb;
 
         /* Start the counter. */
         outb_p(0x34, 0x43);
@@ -108,7 +108,7 @@ static __init unsigned long dosample(void)
         /* Latch and spin until top byte of counter0 is zero */
         do {
                 outb(0x00, 0x43);
-                lsb = inb(0x40);
+                (void) inb(0x40);
                 msb = inb(0x40);
                 ct1 = read_c0_count();
         } while (msb);