22 files changed, 338 insertions, 114 deletions

diff --git a/arch/mips/alchemy/common/dbdma.c b/arch/mips/alchemy/common/dbdma.c
index 3ab6d80d150d..19c1c82849ff 100644
--- a/arch/mips/alchemy/common/dbdma.c
+++ b/arch/mips/alchemy/common/dbdma.c
@@ -175,7 +175,7 @@ static dbdev_tab_t dbdev_tab[] = {
 #define DBDEV_TAB_SIZE  ARRAY_SIZE(dbdev_tab)
 
 #ifdef CONFIG_PM
-static u32 au1xxx_dbdma_pm_regs[NUM_DBDMA_CHANS + 1][8];
+static u32 au1xxx_dbdma_pm_regs[NUM_DBDMA_CHANS + 1][6];
 #endif
 
 
@@ -993,14 +993,13 @@ void au1xxx_dbdma_suspend(void)
         au1xxx_dbdma_pm_regs[0][3] = au_readl(addr + 0x0c);
 
         /* save channel configurations */
-        for (i = 1, addr = DDMA_CHANNEL_BASE; i < NUM_DBDMA_CHANS; i++) {
+        for (i = 1, addr = DDMA_CHANNEL_BASE; i <= NUM_DBDMA_CHANS; i++) {
                 au1xxx_dbdma_pm_regs[i][0] = au_readl(addr + 0x00);
                 au1xxx_dbdma_pm_regs[i][1] = au_readl(addr + 0x04);
                 au1xxx_dbdma_pm_regs[i][2] = au_readl(addr + 0x08);
                 au1xxx_dbdma_pm_regs[i][3] = au_readl(addr + 0x0c);
                 au1xxx_dbdma_pm_regs[i][4] = au_readl(addr + 0x10);
                 au1xxx_dbdma_pm_regs[i][5] = au_readl(addr + 0x14);
-                au1xxx_dbdma_pm_regs[i][6] = au_readl(addr + 0x18);
 
                 /* halt channel */
                 au_writel(au1xxx_dbdma_pm_regs[i][0] & ~1, addr + 0x00);
@@ -1027,14 +1026,13 @@ void au1xxx_dbdma_resume(void)
         au_writel(au1xxx_dbdma_pm_regs[0][3], addr + 0x0c);
 
         /* restore channel configurations */
-        for (i = 1, addr = DDMA_CHANNEL_BASE; i < NUM_DBDMA_CHANS; i++) {
+        for (i = 1, addr = DDMA_CHANNEL_BASE; i <= NUM_DBDMA_CHANS; i++) {
                 au_writel(au1xxx_dbdma_pm_regs[i][0], addr + 0x00);
                 au_writel(au1xxx_dbdma_pm_regs[i][1], addr + 0x04);
                 au_writel(au1xxx_dbdma_pm_regs[i][2], addr + 0x08);
                 au_writel(au1xxx_dbdma_pm_regs[i][3], addr + 0x0c);
                 au_writel(au1xxx_dbdma_pm_regs[i][4], addr + 0x10);
                 au_writel(au1xxx_dbdma_pm_regs[i][5], addr + 0x14);
-                au_writel(au1xxx_dbdma_pm_regs[i][6], addr + 0x18);
                 au_sync();
                 addr += 0x100;  /* next channel base */
         }
diff --git a/arch/mips/basler/excite/excite_iodev.c b/arch/mips/basler/excite/excite_iodev.c
index dfbfd7e2ac08..938b1d0b7652 100644
--- a/arch/mips/basler/excite/excite_iodev.c
+++ b/arch/mips/basler/excite/excite_iodev.c
@@ -112,10 +112,8 @@ static int iodev_open(struct inode *i, struct file *f)
 {
         int ret;
 
-        lock_kernel();
         ret = request_irq(iodev_irq, iodev_irqhdl, IRQF_DISABLED,
                            iodev_name, &miscdev);
-        unlock_kernel();
 
         return ret;
 }
diff --git a/arch/mips/bcm63xx/Makefile b/arch/mips/bcm63xx/Makefile
index aaa585cf26e3..c146d1ededed 100644
--- a/arch/mips/bcm63xx/Makefile
+++ b/arch/mips/bcm63xx/Makefile
@@ -1,5 +1,5 @@
 obj-y           += clk.o cpu.o cs.o gpio.o irq.o prom.o setup.o timer.o \
-                   dev-dsp.o dev-enet.o
+                   dev-dsp.o dev-enet.o dev-pcmcia.o dev-uart.o
 obj-$(CONFIG_EARLY_PRINTK)      += early_printk.o
 
 obj-y           += boards/
diff --git a/arch/mips/bcm63xx/boards/board_bcm963xx.c b/arch/mips/bcm63xx/boards/board_bcm963xx.c
index fd77f548207a..78e155d21be6 100644
--- a/arch/mips/bcm63xx/boards/board_bcm963xx.c
+++ b/arch/mips/bcm63xx/boards/board_bcm963xx.c
@@ -20,10 +20,11 @@
 #include <bcm63xx_cpu.h>
 #include <bcm63xx_regs.h>
 #include <bcm63xx_io.h>
-#include <bcm63xx_board.h>
 #include <bcm63xx_dev_pci.h>
 #include <bcm63xx_dev_enet.h>
 #include <bcm63xx_dev_dsp.h>
+#include <bcm63xx_dev_pcmcia.h>
+#include <bcm63xx_dev_uart.h>
 #include <board_bcm963xx.h>
 
 #define PFX     "board_bcm963xx: "
@@ -793,6 +794,11 @@ int __init board_register_devices(void)
 {
         u32 val;
 
+        bcm63xx_uart_register();
+
+        if (board.has_pccard)
+                bcm63xx_pcmcia_register();
+
         if (board.has_enet0 &&
             !board_get_mac_address(board.enet0.mac_addr))
                 bcm63xx_enet_register(0, &board.enet0);
diff --git a/arch/mips/bcm63xx/dev-pcmcia.c b/arch/mips/bcm63xx/dev-pcmcia.c
new file mode 100644
index 000000000000..de4d917fd54d
--- /dev/null
+++ b/arch/mips/bcm63xx/dev-pcmcia.c
@@ -0,0 +1,144 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2008 Maxime Bizon <mbizon@freebox.fr>
+ */
+
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <asm/bootinfo.h>
+#include <linux/platform_device.h>
+#include <bcm63xx_cs.h>
+#include <bcm63xx_cpu.h>
+#include <bcm63xx_dev_pcmcia.h>
+#include <bcm63xx_io.h>
+#include <bcm63xx_regs.h>
+
+static struct resource pcmcia_resources[] = {
+        /* pcmcia registers */
+        {
+                /* start & end filled at runtime */
+                .flags          = IORESOURCE_MEM,
+        },
+
+        /* pcmcia memory zone resources */
+        {
+                .start          = BCM_PCMCIA_COMMON_BASE_PA,
+                .end            = BCM_PCMCIA_COMMON_END_PA,
+                .flags          = IORESOURCE_MEM,
+        },
+        {
+                .start          = BCM_PCMCIA_ATTR_BASE_PA,
+                .end            = BCM_PCMCIA_ATTR_END_PA,
+                .flags          = IORESOURCE_MEM,
+        },
+        {
+                .start          = BCM_PCMCIA_IO_BASE_PA,
+                .end            = BCM_PCMCIA_IO_END_PA,
+                .flags          = IORESOURCE_MEM,
+        },
+
+        /* PCMCIA irq */
+        {
+                /* start filled at runtime */
+                .flags          = IORESOURCE_IRQ,
+        },
+
+        /* declare PCMCIA IO resource also */
+        {
+                .start          = BCM_PCMCIA_IO_BASE_PA,
+                .end            = BCM_PCMCIA_IO_END_PA,
+                .flags          = IORESOURCE_IO,
+        },
+};
+
+static struct bcm63xx_pcmcia_platform_data pd;
+
+static struct platform_device bcm63xx_pcmcia_device = {
+        .name           = "bcm63xx_pcmcia",
+        .id             = 0,
+        .num_resources  = ARRAY_SIZE(pcmcia_resources),
+        .resource       = pcmcia_resources,
+        .dev            = {
+                .platform_data = &pd,
+        },
+};
+
+static int __init config_pcmcia_cs(unsigned int cs,
+                                   u32 base, unsigned int size)
+{
+        int ret;
+
+        ret = bcm63xx_set_cs_status(cs, 0);
+        if (!ret)
+                ret = bcm63xx_set_cs_base(cs, base, size);
+        if (!ret)
+                ret = bcm63xx_set_cs_status(cs, 1);
+        return ret;
+}
+
+static const __initdata struct {
+        unsigned int    cs;
+        unsigned int    base;
+        unsigned int    size;
+} pcmcia_cs[3] = {
+        {
+                .cs     = MPI_CS_PCMCIA_COMMON,
+                .base   = BCM_PCMCIA_COMMON_BASE_PA,
+                .size   = BCM_PCMCIA_COMMON_SIZE
+        },
+        {
+                .cs     = MPI_CS_PCMCIA_ATTR,
+                .base   = BCM_PCMCIA_ATTR_BASE_PA,
+                .size   = BCM_PCMCIA_ATTR_SIZE
+        },
+        {
+                .cs     = MPI_CS_PCMCIA_IO,
+                .base   = BCM_PCMCIA_IO_BASE_PA,
+                .size   = BCM_PCMCIA_IO_SIZE
+        },
+};
+
+int __init bcm63xx_pcmcia_register(void)
+{
+        int ret, i;
+
+        if (!BCMCPU_IS_6348() && !BCMCPU_IS_6358())
+                return 0;
+
+        /* use correct pcmcia ready gpio depending on processor */
+        switch (bcm63xx_get_cpu_id()) {
+        case BCM6348_CPU_ID:
+                pd.ready_gpio = 22;
+                break;
+
+        case BCM6358_CPU_ID:
+                pd.ready_gpio = 18;
+                break;
+
+        default:
+                return -ENODEV;
+        }
+
+        pcmcia_resources[0].start = bcm63xx_regset_address(RSET_PCMCIA);
+        pcmcia_resources[0].end = pcmcia_resources[0].start +
+                RSET_PCMCIA_SIZE - 1;
+        pcmcia_resources[4].start = bcm63xx_get_irq_number(IRQ_PCMCIA);
+
+        /* configure pcmcia chip selects */
+        for (i = 0; i < 3; i++) {
+                ret = config_pcmcia_cs(pcmcia_cs[i].cs,
+                                       pcmcia_cs[i].base,
+                                       pcmcia_cs[i].size);
+                if (ret)
+                        goto out_err;
+        }
+
+        return platform_device_register(&bcm63xx_pcmcia_device);
+
+out_err:
+        printk(KERN_ERR "unable to set pcmcia chip select\n");
+        return ret;
+}
diff --git a/arch/mips/bcm63xx/dev-uart.c b/arch/mips/bcm63xx/dev-uart.c
new file mode 100644
index 000000000000..5f3d89c4a988
--- /dev/null
+++ b/arch/mips/bcm63xx/dev-uart.c
@@ -0,0 +1,41 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2008 Maxime Bizon <mbizon@freebox.fr>
+ */
+
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/platform_device.h>
+#include <bcm63xx_cpu.h>
+#include <bcm63xx_dev_uart.h>
+
+static struct resource uart_resources[] = {
+        {
+                .start          = -1, /* filled at runtime */
+                .end            = -1, /* filled at runtime */
+                .flags          = IORESOURCE_MEM,
+        },
+        {
+                .start          = -1, /* filled at runtime */
+                .flags          = IORESOURCE_IRQ,
+        },
+};
+
+static struct platform_device bcm63xx_uart_device = {
+        .name           = "bcm63xx_uart",
+        .id             = 0,
+        .num_resources  = ARRAY_SIZE(uart_resources),
+        .resource       = uart_resources,
+};
+
+int __init bcm63xx_uart_register(void)
+{
+        uart_resources[0].start = bcm63xx_regset_address(RSET_UART0);
+        uart_resources[0].end = uart_resources[0].start;
+        uart_resources[0].end += RSET_UART_SIZE - 1;
+        uart_resources[1].start = bcm63xx_get_irq_number(IRQ_UART0);
+        return platform_device_register(&bcm63xx_uart_device);
+}
diff --git a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_pcmcia.h b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_pcmcia.h
new file mode 100644
index 000000000000..2beb3969ce3b
--- /dev/null
+++ b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_pcmcia.h
@@ -0,0 +1,13 @@
+#ifndef BCM63XX_DEV_PCMCIA_H_
+#define BCM63XX_DEV_PCMCIA_H_
+
+/*
+ * PCMCIA driver platform data
+ */
+struct bcm63xx_pcmcia_platform_data {
+        unsigned int ready_gpio;
+};
+
+int bcm63xx_pcmcia_register(void);
+
+#endif /* BCM63XX_DEV_PCMCIA_H_ */
diff --git a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_uart.h b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_uart.h
new file mode 100644
index 000000000000..bf348f573bbc
--- /dev/null
+++ b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_uart.h
@@ -0,0 +1,6 @@
+#ifndef BCM63XX_DEV_UART_H_
+#define BCM63XX_DEV_UART_H_
+
+int bcm63xx_uart_register(void);
+
+#endif /* BCM63XX_DEV_UART_H_ */
diff --git a/arch/mips/include/asm/smp.h b/arch/mips/include/asm/smp.h
index e15f11a09311..af42385245d5 100644
--- a/arch/mips/include/asm/smp.h
+++ b/arch/mips/include/asm/smp.h
@@ -77,7 +77,18 @@ extern void play_dead(void);
 
 extern asmlinkage void smp_call_function_interrupt(void);
 
-extern void arch_send_call_function_single_ipi(int cpu);
-extern void arch_send_call_function_ipi_mask(const struct cpumask *mask);
+static inline void arch_send_call_function_single_ipi(int cpu)
+{
+        extern struct plat_smp_ops *mp_ops;     /* private */
+
+        mp_ops->send_ipi_mask(&cpumask_of_cpu(cpu), SMP_CALL_FUNCTION);
+}
+
+static inline void arch_send_call_function_ipi_mask(const struct cpumask *mask)
+{
+        extern struct plat_smp_ops *mp_ops;     /* private */
+
+        mp_ops->send_ipi_mask(mask, SMP_CALL_FUNCTION);
+}
 
 #endif /* __ASM_SMP_H */
diff --git a/arch/mips/include/asm/unaligned.h b/arch/mips/include/asm/unaligned.h
index 792404948571..42f66c311473 100644
--- a/arch/mips/include/asm/unaligned.h
+++ b/arch/mips/include/asm/unaligned.h
@@ -12,17 +12,17 @@
 #if defined(__MIPSEB__)
 # include <linux/unaligned/be_struct.h>
 # include <linux/unaligned/le_byteshift.h>
-# include <linux/unaligned/generic.h>
 # define get_unaligned  __get_unaligned_be
 # define put_unaligned  __put_unaligned_be
 #elif defined(__MIPSEL__)
 # include <linux/unaligned/le_struct.h>
 # include <linux/unaligned/be_byteshift.h>
-# include <linux/unaligned/generic.h>
 # define get_unaligned  __get_unaligned_le
 # define put_unaligned  __put_unaligned_le
 #else
 #  error "MIPS, but neither __MIPSEB__, nor __MIPSEL__???"
 #endif
 
+# include <linux/unaligned/generic.h>
+
 #endif /* _ASM_MIPS_UNALIGNED_H */
diff --git a/arch/mips/kernel/kspd.c b/arch/mips/kernel/kspd.c
index f2397f00db43..ad4e017ed2f3 100644
--- a/arch/mips/kernel/kspd.c
+++ b/arch/mips/kernel/kspd.c
@@ -172,13 +172,20 @@ static unsigned int translate_open_flags(int flags)
 }
 
 
-static void sp_setfsuidgid( uid_t uid, gid_t gid)
+static int sp_setfsuidgid(uid_t uid, gid_t gid)
 {
-        current->cred->fsuid = uid;
-        current->cred->fsgid = gid;
+        struct cred *new;
 
-        key_fsuid_changed(current);
-        key_fsgid_changed(current);
+        new = prepare_creds();
+        if (!new)
+                return -ENOMEM;
+
+        new->fsuid = uid;
+        new->fsgid = gid;
+
+        commit_creds(new);
+
+        return 0;
 }
 
 /*
@@ -196,7 +203,7 @@ void sp_work_handle_request(void)
         mm_segment_t old_fs;
         struct timeval tv;
         struct timezone tz;
-        int cmd;
+        int err, cmd;
 
         char *vcwd;
         int size;
@@ -225,8 +232,11 @@ void sp_work_handle_request(void)
         /* Run the syscall at the privilege of the user who loaded the
            SP program */
 
-        if (vpe_getuid(tclimit))
-                sp_setfsuidgid(vpe_getuid(tclimit), vpe_getgid(tclimit));
+        if (vpe_getuid(tclimit)) {
+                err = sp_setfsuidgid(vpe_getuid(tclimit), vpe_getgid(tclimit));
+                if (!err)
+                        pr_err("Change of creds failed\n");
+        }
 
         switch (sc.cmd) {
         /* needs the flags argument translating from SDE kit to
@@ -283,8 +293,11 @@ void sp_work_handle_request(void)
                 break;
         } /* switch */
 
-        if (vpe_getuid(tclimit))
-                sp_setfsuidgid( 0, 0);
+        if (vpe_getuid(tclimit)) {
+                err = sp_setfsuidgid(0, 0);
+                if (!err)
+                        pr_err("restoring old creds failed\n");
+        }
 
         old_fs = get_fs();
         set_fs(KERNEL_DS);
diff --git a/arch/mips/kernel/rtlx.c b/arch/mips/kernel/rtlx.c
index a10ebfdc28ae..364f066cb497 100644
--- a/arch/mips/kernel/rtlx.c
+++ b/arch/mips/kernel/rtlx.c
@@ -72,8 +72,9 @@ static void rtlx_dispatch(void)
 */
 static irqreturn_t rtlx_interrupt(int irq, void *dev_id)
 {
+        unsigned int vpeflags;
+        unsigned long flags;
         int i;
-        unsigned int flags, vpeflags;
 
         /* Ought not to be strictly necessary for SMTC builds */
         local_irq_save(flags);
@@ -392,20 +393,12 @@ out:
 
 static int file_open(struct inode *inode, struct file *filp)
 {
-        int minor = iminor(inode);
-        int err;
-
-        lock_kernel();
-        err = rtlx_open(minor, (filp->f_flags & O_NONBLOCK) ? 0 : 1);
-        unlock_kernel();
-        return err;
+        return rtlx_open(iminor(inode), (filp->f_flags & O_NONBLOCK) ? 0 : 1);
 }
 
 static int file_release(struct inode *inode, struct file *filp)
 {
-        int minor = iminor(inode);
-
-        return rtlx_release(minor);
+        return rtlx_release(iminor(inode));
 }
 
 static unsigned int file_poll(struct file *file, poll_table * wait)
diff --git a/arch/mips/kernel/smp.c b/arch/mips/kernel/smp.c
index 4eb106c6a3ec..e72e6844d134 100644
--- a/arch/mips/kernel/smp.c
+++ b/arch/mips/kernel/smp.c
@@ -32,7 +32,6 @@
 #include <linux/cpumask.h>
 #include <linux/cpu.h>
 #include <linux/err.h>
-#include <linux/smp.h>
 
 #include <asm/atomic.h>
 #include <asm/cpu.h>
@@ -128,19 +127,6 @@ asmlinkage __cpuinit void start_secondary(void)
         cpu_idle();
 }
 
-void arch_send_call_function_ipi_mask(const struct cpumask *mask)
-{
-        mp_ops->send_ipi_mask(mask, SMP_CALL_FUNCTION);
-}
-
-/*
- * We reuse the same vector for the single IPI
- */
-void arch_send_call_function_single_ipi(int cpu)
-{
-        mp_ops->send_ipi_mask(cpumask_of_cpu(cpu), SMP_CALL_FUNCTION);
-}
-
 /*
  * Call into both interrupt handlers, as we share the IPI for them
  */
diff --git a/arch/mips/kernel/smtc.c b/arch/mips/kernel/smtc.c
index 67153a0dc267..4d181df44a40 100644
--- a/arch/mips/kernel/smtc.c
+++ b/arch/mips/kernel/smtc.c
@@ -1098,9 +1098,8 @@ static void ipi_irq_dispatch(void)
 
 static struct irqaction irq_ipi = {
         .handler        = ipi_interrupt,
-        .flags          = IRQF_DISABLED,
-        .name           = "SMTC_IPI",
-        .flags          = IRQF_PERCPU
+        .flags          = IRQF_DISABLED | IRQF_PERCPU,
+        .name           = "SMTC_IPI"
 };
 
 static void setup_cross_vpe_interrupts(unsigned int nvpe)
diff --git a/arch/mips/kernel/vpe.c b/arch/mips/kernel/vpe.c
index eb6c4c5b7fbe..03092ab2a296 100644
--- a/arch/mips/kernel/vpe.c
+++ b/arch/mips/kernel/vpe.c
@@ -144,14 +144,15 @@ struct tc {
 };
 
 struct {
-        /* Virtual processing elements */
-        struct list_head vpe_list;
-
-        /* Thread contexts */
-        struct list_head tc_list;
+        spinlock_t vpe_list_lock;
+        struct list_head vpe_list;      /* Virtual processing elements */
+        spinlock_t tc_list_lock;
+        struct list_head tc_list;       /* Thread contexts */
 } vpecontrol = {
-        .vpe_list = LIST_HEAD_INIT(vpecontrol.vpe_list),
-        .tc_list = LIST_HEAD_INIT(vpecontrol.tc_list)
+        .vpe_list_lock  = SPIN_LOCK_UNLOCKED,
+        .vpe_list       = LIST_HEAD_INIT(vpecontrol.vpe_list),
+        .tc_list_lock   = SPIN_LOCK_UNLOCKED,
+        .tc_list        = LIST_HEAD_INIT(vpecontrol.tc_list)
 };
 
 static void release_progmem(void *ptr);
@@ -159,28 +160,38 @@ static void release_progmem(void *ptr);
 /* get the vpe associated with this minor */
 static struct vpe *get_vpe(int minor)
 {
-        struct vpe *v;
+        struct vpe *res, *v;
 
         if (!cpu_has_mipsmt)
                 return NULL;
 
+        res = NULL;
+        spin_lock(&vpecontrol.vpe_list_lock);
         list_for_each_entry(v, &vpecontrol.vpe_list, list) {
-                if (v->minor == minor)
-                        return v;
+                if (v->minor == minor) {
+                        res = v;
+                        break;
+                }
         }
+        spin_unlock(&vpecontrol.vpe_list_lock);
 
-        return NULL;
+        return res;
 }
 
 /* get the vpe associated with this minor */
 static struct tc *get_tc(int index)
 {
-        struct tc *t;
+        struct tc *res, *t;
 
+        res = NULL;
+        spin_lock(&vpecontrol.tc_list_lock);
         list_for_each_entry(t, &vpecontrol.tc_list, list) {
-                if (t->index == index)
-                        return t;
+                if (t->index == index) {
+                        res = t;
+                        break;
+                }
         }
+        spin_unlock(&vpecontrol.tc_list_lock);
 
         return NULL;
 }
@@ -190,15 +201,17 @@ static struct vpe *alloc_vpe(int minor)
 {
         struct vpe *v;
 
-        if ((v = kzalloc(sizeof(struct vpe), GFP_KERNEL)) == NULL) {
+        if ((v = kzalloc(sizeof(struct vpe), GFP_KERNEL)) == NULL)
                 return NULL;
-        }
 
         INIT_LIST_HEAD(&v->tc);
+        spin_lock(&vpecontrol.vpe_list_lock);
         list_add_tail(&v->list, &vpecontrol.vpe_list);
+        spin_unlock(&vpecontrol.vpe_list_lock);
 
         INIT_LIST_HEAD(&v->notify);
         v->minor = minor;
+
         return v;
 }
 
@@ -212,7 +225,10 @@ static struct tc *alloc_tc(int index)
 
         INIT_LIST_HEAD(&tc->tc);
         tc->index = index;
+
+        spin_lock(&vpecontrol.tc_list_lock);
         list_add_tail(&tc->list, &vpecontrol.tc_list);
+        spin_unlock(&vpecontrol.tc_list_lock);
 
 out:
         return tc;
@@ -227,7 +243,7 @@ static void release_vpe(struct vpe *v)
         kfree(v);
 }
 
-static void dump_mtregs(void)
+static void __maybe_unused dump_mtregs(void)
 {
         unsigned long val;
 
@@ -1048,20 +1064,19 @@ static int vpe_open(struct inode *inode, struct file *filp)
         enum vpe_state state;
         struct vpe_notifications *not;
         struct vpe *v;
-        int ret, err = 0;
+        int ret;
 
-        lock_kernel();
         if (minor != iminor(inode)) {
                 /* assume only 1 device at the moment. */
-                printk(KERN_WARNING "VPE loader: only vpe1 is supported\n");
-                err = -ENODEV;
-                goto out;
+                pr_warning("VPE loader: only vpe1 is supported\n");
+
+                return -ENODEV;
         }
 
         if ((v = get_vpe(tclimit)) == NULL) {
-                printk(KERN_WARNING "VPE loader: unable to get vpe\n");
-                err = -ENODEV;
-                goto out;
+                pr_warning("VPE loader: unable to get vpe\n");
+
+                return -ENODEV;
         }
 
         state = xchg(&v->state, VPE_STATE_INUSE);
@@ -1101,8 +1116,8 @@ static int vpe_open(struct inode *inode, struct file *filp)
         v->shared_ptr = NULL;
         v->__start = 0;
 
-out:
         unlock_kernel();
+
         return 0;
 }
 
@@ -1594,14 +1609,14 @@ static void __exit vpe_module_exit(void)
 {
         struct vpe *v, *n;
 
+        device_del(&vpe_device);
+        unregister_chrdev(major, module_name);
+
+        /* No locking needed here */
         list_for_each_entry_safe(v, n, &vpecontrol.vpe_list, list) {
-                if (v->state != VPE_STATE_UNUSED) {
+                if (v->state != VPE_STATE_UNUSED)
                         release_vpe(v);
-                }
         }
-
-        device_del(&vpe_device);
-        unregister_chrdev(major, module_name);
 }
 
 module_init(vpe_module_init);
diff --git a/arch/mips/mm/sc-mips.c b/arch/mips/mm/sc-mips.c
index b55c2d1b998f..5ab5fa8c1d82 100644
--- a/arch/mips/mm/sc-mips.c
+++ b/arch/mips/mm/sc-mips.c
@@ -32,6 +32,11 @@ static void mips_sc_wback_inv(unsigned long addr, unsigned long size)
  */
 static void mips_sc_inv(unsigned long addr, unsigned long size)
 {
+        unsigned long lsize = cpu_scache_line_size();
+        unsigned long almask = ~(lsize - 1);
+
+        cache_op(Hit_Writeback_Inv_SD, addr & almask);
+        cache_op(Hit_Writeback_Inv_SD, (addr + size - 1) & almask);
         blast_inv_scache_range(addr, addr + size);
 }
 
diff --git a/arch/mips/oprofile/op_model_loongson2.c b/arch/mips/oprofile/op_model_loongson2.c
index 655cb8dec340..deed1d5d4982 100644
--- a/arch/mips/oprofile/op_model_loongson2.c
+++ b/arch/mips/oprofile/op_model_loongson2.c
@@ -44,7 +44,7 @@ static struct loongson2_register_config {
         unsigned int ctrl;
         unsigned long long reset_counter1;
         unsigned long long reset_counter2;
-        int cnt1_enalbed, cnt2_enalbed;
+        int cnt1_enabled, cnt2_enabled;
 } reg;
 
 DEFINE_SPINLOCK(sample_lock);
@@ -81,8 +81,8 @@ static void loongson2_reg_setup(struct op_counter_config *cfg)
 
         reg.ctrl = ctrl;
 
-        reg.cnt1_enalbed = cfg[0].enabled;
-        reg.cnt2_enalbed = cfg[1].enabled;
+        reg.cnt1_enabled = cfg[0].enabled;
+        reg.cnt2_enabled = cfg[1].enabled;
 
 }
 
@@ -99,7 +99,7 @@ static void loongson2_cpu_setup(void *args)
 static void loongson2_cpu_start(void *args)
 {
         /* Start all counters on current CPU */
-        if (reg.cnt1_enalbed || reg.cnt2_enalbed)
+        if (reg.cnt1_enabled || reg.cnt2_enabled)
                 write_c0_perfctrl(reg.ctrl);
 }
 
@@ -125,7 +125,7 @@ static irqreturn_t loongson2_perfcount_handler(int irq, void *dev_id)
          */
 
         /* Check whether the irq belongs to me */
-        enabled = reg.cnt1_enalbed | reg.cnt2_enalbed;
+        enabled = reg.cnt1_enabled | reg.cnt2_enabled;
         if (!enabled)
                 return IRQ_NONE;
 
@@ -136,12 +136,12 @@ static irqreturn_t loongson2_perfcount_handler(int irq, void *dev_id)
         spin_lock_irqsave(&sample_lock, flags);
 
         if (counter1 & LOONGSON2_PERFCNT_OVERFLOW) {
-                if (reg.cnt1_enalbed)
+                if (reg.cnt1_enabled)
                         oprofile_add_sample(regs, 0);
                 counter1 = reg.reset_counter1;
         }
         if (counter2 & LOONGSON2_PERFCNT_OVERFLOW) {
-                if (reg.cnt2_enalbed)
+                if (reg.cnt2_enabled)
                         oprofile_add_sample(regs, 1);
                 counter2 = reg.reset_counter2;
         }
diff --git a/arch/mips/pci/ops-pmcmsp.c b/arch/mips/pci/ops-pmcmsp.c
index 109c95ca698b..32548b5d68d6 100644
--- a/arch/mips/pci/ops-pmcmsp.c
+++ b/arch/mips/pci/ops-pmcmsp.c
@@ -385,6 +385,7 @@ int msp_pcibios_config_access(unsigned char access_type,
         unsigned long intr;
         unsigned long value;
         static char pciirqflag;
+        int ret;
 #if defined(CONFIG_PMC_MSP7120_GW) || defined(CONFIG_PMC_MSP7120_EVAL)
         unsigned int    vpe_status;
 #endif
@@ -402,11 +403,13 @@ int msp_pcibios_config_access(unsigned char access_type,
          * allocation assigns an interrupt handler to the interrupt.
          */
         if (pciirqflag == 0) {
-                request_irq(MSP_INT_PCI,/* Hardcoded internal MSP7120 wiring */
+                ret = request_irq(MSP_INT_PCI,/* Hardcoded internal MSP7120 wiring */
                                 bpci_interrupt,
                                 IRQF_SHARED | IRQF_DISABLED,
                                 "PMC MSP PCI Host",
                                 preg);
+                if (ret != 0)
+                        return ret;
                 pciirqflag = ~0;
         }
 
diff --git a/arch/mips/sgi-ip27/ip27-smp.c b/arch/mips/sgi-ip27/ip27-smp.c
index 9aa8f2951df6..c6851df9ab74 100644
--- a/arch/mips/sgi-ip27/ip27-smp.c
+++ b/arch/mips/sgi-ip27/ip27-smp.c
@@ -165,7 +165,7 @@ static void ip27_send_ipi_single(int destid, unsigned int action)
         REMOTE_HUB_SEND_INTR(COMPACT_TO_NASID_NODEID(cpu_to_node(destid)), irq);
 }
 
-static void ip27_send_ipi(const struct cpumask *mask, unsigned int action)
+static void ip27_send_ipi_mask(const struct cpumask *mask, unsigned int action)
 {
         unsigned int i;
 
diff --git a/arch/mips/sibyte/bcm1480/irq.c b/arch/mips/sibyte/bcm1480/irq.c
index ba59839a021e..4070268aa769 100644
--- a/arch/mips/sibyte/bcm1480/irq.c
+++ b/arch/mips/sibyte/bcm1480/irq.c
@@ -117,10 +117,6 @@ static int bcm1480_set_affinity(unsigned int irq, const struct cpumask *mask)
         unsigned long flags;
         unsigned int irq_dirty;
 
-        if (cpumask_weight(mask) != 1) {
-                printk("attempted to set irq affinity for irq %d to multiple CPUs\n", irq);
-                return -1;
-        }
         i = cpumask_first(mask);
 
         /* Convert logical CPU to physical CPU */
diff --git a/arch/mips/sibyte/common/sb_tbprof.c b/arch/mips/sibyte/common/sb_tbprof.c
index 637a194e5cd5..15ea778b5e66 100644
--- a/arch/mips/sibyte/common/sb_tbprof.c
+++ b/arch/mips/sibyte/common/sb_tbprof.c
@@ -403,36 +403,31 @@ static int sbprof_zbprof_stop(void)
 static int sbprof_tb_open(struct inode *inode, struct file *filp)
 {
         int minor;
-        int err = 0;
 
-        lock_kernel();
         minor = iminor(inode);
-        if (minor != 0) {
-                err = -ENODEV;
-                goto out;
-        }
+        if (minor != 0)
+                return -ENODEV;
 
-        if (xchg(&sbp.open, SB_OPENING) != SB_CLOSED) {
-                err = -EBUSY;
-                goto out;
-        }
+        if (xchg(&sbp.open, SB_OPENING) != SB_CLOSED)
+                return -EBUSY;
 
         memset(&sbp, 0, sizeof(struct sbprof_tb));
         sbp.sbprof_tbbuf = vmalloc(MAX_TBSAMPLE_BYTES);
         if (!sbp.sbprof_tbbuf) {
-                err = -ENOMEM;
-                goto out;
+                sbp.open = SB_CLOSED;
+                wmb();
+                return -ENOMEM;
         }
+
         memset(sbp.sbprof_tbbuf, 0, MAX_TBSAMPLE_BYTES);
         init_waitqueue_head(&sbp.tb_sync);
         init_waitqueue_head(&sbp.tb_read);
         mutex_init(&sbp.lock);
 
         sbp.open = SB_OPEN;
+        wmb();
 
-  out:
-        unlock_kernel();
-        return err;
+        return 0;
 }
 
 static int sbprof_tb_release(struct inode *inode, struct file *filp)
@@ -440,7 +435,7 @@ static int sbprof_tb_release(struct inode *inode, struct file *filp)
         int minor;
 
         minor = iminor(inode);
-        if (minor != 0 || !sbp.open)
+        if (minor != 0 || sbp.open != SB_CLOSED)
                 return -ENODEV;
 
         mutex_lock(&sbp.lock);
@@ -449,7 +444,8 @@ static int sbprof_tb_release(struct inode *inode, struct file *filp)
                 sbprof_zbprof_stop();
 
         vfree(sbp.sbprof_tbbuf);
-        sbp.open = 0;
+        sbp.open = SB_CLOSED;
+        wmb();
 
         mutex_unlock(&sbp.lock);
 
@@ -583,7 +579,8 @@ static int __init sbprof_tb_init(void)
         }
         tb_dev = dev;
 
-        sbp.open = 0;
+        sbp.open = SB_CLOSED;
+        wmb();
         tb_period = zbbus_mhz * 10000LL;
         pr_info(DEVNAME ": initialized - tb_period = %lld\n",
                 (long long) tb_period);
diff --git a/arch/mips/sibyte/swarm/setup.c b/arch/mips/sibyte/swarm/setup.c
index 623ffc933c4c..5277aac96b0f 100644
--- a/arch/mips/sibyte/swarm/setup.c
+++ b/arch/mips/sibyte/swarm/setup.c
@@ -106,7 +106,7 @@ void read_persistent_clock(struct timespec *ts)
                 break;
         }
         ts->tv_sec = sec;
-        tv->tv_nsec = 0;
+        ts->tv_nsec = 0;
 }
 
 int rtc_mips_set_time(unsigned long sec)