Merge branch 'clps711x/cleanup' into next/cleanup

Patches from Alexander Shiyan <shc_work@mail.ru>:

* clps711x/cleanup:
  ARM: clps711x: Remove the setting of the time
  ARM: clps711x: Removed superfluous transform virt_to_bus and related functions
  ARM: clps711x/p720t: Replace __initcall by .init_early call

Signed-off-by: Arnd Bergmann <arnd@arndb.de>

31 files changed, 211 insertions, 139 deletions

diff --git a/arch/arm/include/asm/atomic.h b/arch/arm/include/asm/atomic.h
index 68374ba6a943..c79f61faa3a5 100644
--- a/arch/arm/include/asm/atomic.h
+++ b/arch/arm/include/asm/atomic.h
@@ -243,7 +243,7 @@ typedef struct {
 
 #define ATOMIC64_INIT(i) { (i) }
 
-static inline u64 atomic64_read(atomic64_t *v)
+static inline u64 atomic64_read(const atomic64_t *v)
 {
         u64 result;
 
diff --git a/arch/arm/include/asm/domain.h b/arch/arm/include/asm/domain.h
index 3d2220498abc..6ddbe446425e 100644
--- a/arch/arm/include/asm/domain.h
+++ b/arch/arm/include/asm/domain.h
@@ -60,13 +60,13 @@
 #ifndef __ASSEMBLY__
 
 #ifdef CONFIG_CPU_USE_DOMAINS
-#define set_domain(x)                                   \
-        do {                                            \
-        __asm__ __volatile__(                           \
-        "mcr    p15, 0, %0, c3, c0      @ set domain"   \
-          : : "r" (x));                                 \
-        isb();                                          \
-        } while (0)
+static inline void set_domain(unsigned val)
+{
+        asm volatile(
+        "mcr    p15, 0, %0, c3, c0      @ set domain"
+          : : "r" (val));
+        isb();
+}
 
 #define modify_domain(dom,type)                                 \
         do {                                                    \
@@ -78,8 +78,8 @@
         } while (0)
 
 #else
-#define set_domain(x)           do { } while (0)
-#define modify_domain(dom,type) do { } while (0)
+static inline void set_domain(unsigned val) { }
+static inline void modify_domain(unsigned dom, unsigned type)   { }
 #endif
 
 /*
diff --git a/arch/arm/include/asm/thread_info.h b/arch/arm/include/asm/thread_info.h
index b79f8e97f775..af7b0bda3355 100644
--- a/arch/arm/include/asm/thread_info.h
+++ b/arch/arm/include/asm/thread_info.h
@@ -148,7 +148,6 @@ extern int vfp_restore_user_hwstate(struct user_vfp __user *,
 #define TIF_NOTIFY_RESUME       2       /* callback before returning to user */
 #define TIF_SYSCALL_TRACE       8
 #define TIF_SYSCALL_AUDIT       9
-#define TIF_SYSCALL_RESTARTSYS  10
 #define TIF_POLLING_NRFLAG      16
 #define TIF_USING_IWMMXT        17
 #define TIF_MEMDIE              18      /* is terminating due to OOM killer */
@@ -164,11 +163,9 @@ extern int vfp_restore_user_hwstate(struct user_vfp __user *,
 #define _TIF_POLLING_NRFLAG     (1 << TIF_POLLING_NRFLAG)
 #define _TIF_USING_IWMMXT       (1 << TIF_USING_IWMMXT)
 #define _TIF_SECCOMP            (1 << TIF_SECCOMP)
-#define _TIF_SYSCALL_RESTARTSYS (1 << TIF_SYSCALL_RESTARTSYS)
 
 /* Checks for any syscall work in entry-common.S */
-#define _TIF_SYSCALL_WORK (_TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT | \
-                           _TIF_SYSCALL_RESTARTSYS)
+#define _TIF_SYSCALL_WORK (_TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT)
 
 /*
  * Change these and you break ASM code in entry-common.S
diff --git a/arch/arm/kernel/kprobes-test-arm.c b/arch/arm/kernel/kprobes-test-arm.c
index ba32b393b3f0..38c1a3b103a0 100644
--- a/arch/arm/kernel/kprobes-test-arm.c
+++ b/arch/arm/kernel/kprobes-test-arm.c
@@ -187,8 +187,8 @@ void kprobe_arm_test_cases(void)
         TEST_BF_R ("mov pc, r",0,2f,"")
         TEST_BF_RR("mov pc, r",0,2f,", asl r",1,0,"")
         TEST_BB(   "sub pc, pc, #1b-2b+8")
-#if __LINUX_ARM_ARCH__ >= 6
-        TEST_BB(   "sub pc, pc, #1b-2b+8-2") /* UNPREDICTABLE before ARMv6 */
+#if __LINUX_ARM_ARCH__ == 6 && !defined(CONFIG_CPU_V7)
+        TEST_BB(   "sub pc, pc, #1b-2b+8-2") /* UNPREDICTABLE before and after ARMv6 */
 #endif
         TEST_BB_R( "sub pc, pc, r",14, 1f-2f+8,"")
         TEST_BB_R( "rsb pc, r",14,1f-2f+8,", pc")
diff --git a/arch/arm/kernel/perf_event.c b/arch/arm/kernel/perf_event.c
index 186c8cb982c5..a02eada3aa5d 100644
--- a/arch/arm/kernel/perf_event.c
+++ b/arch/arm/kernel/perf_event.c
@@ -503,7 +503,7 @@ __hw_perf_event_init(struct perf_event *event)
              event_requires_mode_exclusion(&event->attr)) {
                 pr_debug("ARM performance counters do not support "
                          "mode exclusion\n");
-                return -EPERM;
+                return -EOPNOTSUPP;
         }
 
         /*
diff --git a/arch/arm/kernel/ptrace.c b/arch/arm/kernel/ptrace.c
index 5700a7ae7f0b..14e38261cd31 100644
--- a/arch/arm/kernel/ptrace.c
+++ b/arch/arm/kernel/ptrace.c
@@ -25,7 +25,6 @@
 #include <linux/regset.h>
 #include <linux/audit.h>
 #include <linux/tracehook.h>
-#include <linux/unistd.h>
 
 #include <asm/pgtable.h>
 #include <asm/traps.h>
@@ -918,8 +917,6 @@ asmlinkage int syscall_trace(int why, struct pt_regs *regs, int scno)
                 audit_syscall_entry(AUDIT_ARCH_ARM, scno, regs->ARM_r0,
                                     regs->ARM_r1, regs->ARM_r2, regs->ARM_r3);
 
-        if (why == 0 && test_and_clear_thread_flag(TIF_SYSCALL_RESTARTSYS))
-                scno = __NR_restart_syscall - __NR_SYSCALL_BASE;
         if (!test_thread_flag(TIF_SYSCALL_TRACE))
                 return scno;
 
diff --git a/arch/arm/kernel/signal.c b/arch/arm/kernel/signal.c
index fd2392a17ac1..536c5d6b340b 100644
--- a/arch/arm/kernel/signal.c
+++ b/arch/arm/kernel/signal.c
@@ -27,6 +27,7 @@
  */
 #define SWI_SYS_SIGRETURN       (0xef000000|(__NR_sigreturn)|(__NR_OABI_SYSCALL_BASE))
 #define SWI_SYS_RT_SIGRETURN    (0xef000000|(__NR_rt_sigreturn)|(__NR_OABI_SYSCALL_BASE))
+#define SWI_SYS_RESTART         (0xef000000|__NR_restart_syscall|__NR_OABI_SYSCALL_BASE)
 
 /*
  * With EABI, the syscall number has to be loaded into r7.
@@ -47,6 +48,18 @@ const unsigned long sigreturn_codes[7] = {
 };
 
 /*
+ * Either we support OABI only, or we have EABI with the OABI
+ * compat layer enabled.  In the later case we don't know if
+ * user space is EABI or not, and if not we must not clobber r7.
+ * Always using the OABI syscall solves that issue and works for
+ * all those cases.
+ */
+const unsigned long syscall_restart_code[2] = {
+        SWI_SYS_RESTART,        /* swi  __NR_restart_syscall */
+        0xe49df004,             /* ldr  pc, [sp], #4 */
+};
+
+/*
  * atomically swap in the new signal mask, and wait for a signal.
  */
 asmlinkage int sys_sigsuspend(int restart, unsigned long oldmask, old_sigset_t mask)
@@ -592,10 +605,12 @@ static void do_signal(struct pt_regs *regs, int syscall)
                 case -ERESTARTNOHAND:
                 case -ERESTARTSYS:
                 case -ERESTARTNOINTR:
-                case -ERESTART_RESTARTBLOCK:
                         regs->ARM_r0 = regs->ARM_ORIG_r0;
                         regs->ARM_pc = restart_addr;
                         break;
+                case -ERESTART_RESTARTBLOCK:
+                        regs->ARM_r0 = -EINTR;
+                        break;
                 }
         }
 
@@ -611,14 +626,12 @@ static void do_signal(struct pt_regs *regs, int syscall)
                  * debugger has chosen to restart at a different PC.
                  */
                 if (regs->ARM_pc == restart_addr) {
-                        if (retval == -ERESTARTNOHAND ||
-                            retval == -ERESTART_RESTARTBLOCK
+                        if (retval == -ERESTARTNOHAND
                             || (retval == -ERESTARTSYS
                                 && !(ka.sa.sa_flags & SA_RESTART))) {
                                 regs->ARM_r0 = -EINTR;
                                 regs->ARM_pc = continue_addr;
                         }
-                        clear_thread_flag(TIF_SYSCALL_RESTARTSYS);
                 }
 
                 handle_signal(signr, &ka, &info, regs);
@@ -632,8 +645,29 @@ static void do_signal(struct pt_regs *regs, int syscall)
                  * ignore the restart.
                  */
                 if (retval == -ERESTART_RESTARTBLOCK
-                    && regs->ARM_pc == restart_addr)
-                        set_thread_flag(TIF_SYSCALL_RESTARTSYS);
+                    && regs->ARM_pc == continue_addr) {
+                        if (thumb_mode(regs)) {
+                                regs->ARM_r7 = __NR_restart_syscall - __NR_SYSCALL_BASE;
+                                regs->ARM_pc -= 2;
+                        } else {
+#if defined(CONFIG_AEABI) && !defined(CONFIG_OABI_COMPAT)
+                                regs->ARM_r7 = __NR_restart_syscall;
+                                regs->ARM_pc -= 4;
+#else
+                                u32 __user *usp;
+
+                                regs->ARM_sp -= 4;
+                                usp = (u32 __user *)regs->ARM_sp;
+
+                                if (put_user(regs->ARM_pc, usp) == 0) {
+                                        regs->ARM_pc = KERN_RESTART_CODE;
+                                } else {
+                                        regs->ARM_sp += 4;
+                                        force_sigsegv(0, current);
+                                }
+#endif
+                        }
+                }
         }
 
         restore_saved_sigmask();
diff --git a/arch/arm/kernel/signal.h b/arch/arm/kernel/signal.h
index 5ff067b7c752..6fcfe8398aa4 100644
--- a/arch/arm/kernel/signal.h
+++ b/arch/arm/kernel/signal.h
@@ -8,5 +8,7 @@
  * published by the Free Software Foundation.
  */
 #define KERN_SIGRETURN_CODE     (CONFIG_VECTORS_BASE + 0x00000500)
+#define KERN_RESTART_CODE       (KERN_SIGRETURN_CODE + sizeof(sigreturn_codes))
 
 extern const unsigned long sigreturn_codes[7];
+extern const unsigned long syscall_restart_code[2];
diff --git a/arch/arm/kernel/traps.c b/arch/arm/kernel/traps.c
index 4928d89758f4..3647170e9a16 100644
--- a/arch/arm/kernel/traps.c
+++ b/arch/arm/kernel/traps.c
@@ -820,6 +820,8 @@ void __init early_trap_init(void *vectors_base)
          */
         memcpy((void *)(vectors + KERN_SIGRETURN_CODE - CONFIG_VECTORS_BASE),
                sigreturn_codes, sizeof(sigreturn_codes));
+        memcpy((void *)(vectors + KERN_RESTART_CODE - CONFIG_VECTORS_BASE),
+               syscall_restart_code, sizeof(syscall_restart_code));
 
         flush_icache_range(vectors, vectors + PAGE_SIZE);
         modify_domain(DOMAIN_USER, DOMAIN_CLIENT);
diff --git a/arch/arm/kernel/vmlinux.lds.S b/arch/arm/kernel/vmlinux.lds.S
index 43a31fb06318..36ff15bbfdd4 100644
--- a/arch/arm/kernel/vmlinux.lds.S
+++ b/arch/arm/kernel/vmlinux.lds.S
@@ -183,7 +183,9 @@ SECTIONS
         }
 #endif
 
+#ifdef CONFIG_SMP
         PERCPU_SECTION(L1_CACHE_BYTES)
+#endif
 
 #ifdef CONFIG_XIP_KERNEL
         __data_loc = ALIGN(4);          /* location in binary */
diff --git a/arch/arm/mach-clps711x/common.c b/arch/arm/mach-clps711x/common.c
index c965fd8eb31a..f15293bd7974 100644
--- a/arch/arm/mach-clps711x/common.c
+++ b/arch/arm/mach-clps711x/common.c
@@ -26,7 +26,6 @@
 #include <linux/io.h>
 #include <linux/irq.h>
 #include <linux/sched.h>
-#include <linux/timex.h>
 
 #include <asm/sizes.h>
 #include <mach/hardware.h>
@@ -188,7 +187,6 @@ static struct irqaction clps711x_timer_irq = {
 
 static void __init clps711x_timer_init(void)
 {
-        struct timespec tv;
         unsigned int syscon;
 
         syscon = clps_readl(SYSCON1);
@@ -198,10 +196,6 @@ static void __init clps711x_timer_init(void)
         clps_writel(LATCH-1, TC2D); /* 512kHz / 100Hz - 1 */
 
         setup_irq(IRQ_TC2OI, &clps711x_timer_irq);
-
-        tv.tv_nsec = 0;
-        tv.tv_sec = clps_readl(RTCDR);
-        do_settimeofday(&tv);
 }
 
 struct sys_timer clps711x_timer = {
diff --git a/arch/arm/mach-clps711x/include/mach/memory.h b/arch/arm/mach-clps711x/include/mach/memory.h
index 3a032a67725c..fc0e028d9405 100644
--- a/arch/arm/mach-clps711x/include/mach/memory.h
+++ b/arch/arm/mach-clps711x/include/mach/memory.h
@@ -25,26 +25,6 @@
  */
 #define PLAT_PHYS_OFFSET        UL(0xc0000000)
 
-#if !defined(CONFIG_ARCH_CDB89712) && !defined (CONFIG_ARCH_AUTCPU12)
-
-#define __virt_to_bus(x)        ((x) - PAGE_OFFSET)
-#define __bus_to_virt(x)        ((x) + PAGE_OFFSET)
-#define __pfn_to_bus(x)         (__pfn_to_phys(x) - PHYS_OFFSET)
-#define __bus_to_pfn(x)         __phys_to_pfn((x) + PHYS_OFFSET)
-
-#endif
-
-
-/*
- * Like the SA1100, the EDB7211 has a large gap between physical RAM
- * banks.  In 2.2, the Psion (CL-PS7110) port added custom support for
- * discontiguous physical memory.  In 2.4, we can use the standard
- * Linux NUMA support.
- *
- * This is not necessary for EP7211 implementations with only one used
- * memory bank.  For those systems, simply undefine CONFIG_DISCONTIGMEM.
- */
-
 /*
  * The PS7211 allows up to 256MB max per DRAM bank, but the EDB7211
  * uses only one of the two banks (bank #1).  However, even within
@@ -54,23 +34,6 @@
  * them, so we use 24 for the node max shift to get 16MB node sizes.
  */
 
-/*
- * Because of the wide memory address space between physical RAM banks on the 
- * SA1100, it's much more convenient to use Linux's NUMA support to implement
- * our memory map representation.  Assuming all memory nodes have equal access 
- * characteristics, we then have generic discontiguous memory support.
- *
- * Of course, all this isn't mandatory for SA1100 implementations with only
- * one used memory bank.  For those, simply undefine CONFIG_DISCONTIGMEM.
- *
- * The nodes are matched with the physical memory bank addresses which are 
- * incidentally the same as virtual addresses.
- * 
- *      node 0:  0xc0000000 - 0xc7ffffff
- *      node 1:  0xc8000000 - 0xcfffffff
- *      node 2:  0xd0000000 - 0xd7ffffff
- *      node 3:  0xd8000000 - 0xdfffffff
- */
 #define SECTION_SIZE_BITS       24
 #define MAX_PHYSMEM_BITS        32
 
diff --git a/arch/arm/mach-clps711x/p720t.c b/arch/arm/mach-clps711x/p720t.c
index 42ee8f33eafb..f266d90b9efc 100644
--- a/arch/arm/mach-clps711x/p720t.c
+++ b/arch/arm/mach-clps711x/p720t.c
@@ -86,17 +86,7 @@ static void __init p720t_map_io(void)
         iotable_init(p720t_io_desc, ARRAY_SIZE(p720t_io_desc));
 }
 
-MACHINE_START(P720T, "ARM-Prospector720T")
-        /* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
-        .atag_offset    = 0x100,
-        .fixup          = fixup_p720t,
-        .map_io         = p720t_map_io,
-        .init_irq       = clps711x_init_irq,
-        .timer          = &clps711x_timer,
-        .restart        = clps711x_restart,
-MACHINE_END
-
-static int p720t_hw_init(void)
+static void __init p720t_init_early(void)
 {
         /*
          * Power down as much as possible in case we don't
@@ -111,13 +101,19 @@ static int p720t_hw_init(void)
         PLD_CODEC = 0;
         PLD_TCH   = 0;
         PLD_SPI   = 0;
-#ifndef CONFIG_DEBUG_LL
-        PLD_COM2  = 0;
-        PLD_COM1  = 0;
-#endif
-
-        return 0;
+        if (!IS_ENABLED(CONFIG_DEBUG_LL)) {
+                PLD_COM2 = 0;
+                PLD_COM1 = 0;
+        }
 }
 
-__initcall(p720t_hw_init);
-
+MACHINE_START(P720T, "ARM-Prospector720T")
+        /* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
+        .atag_offset    = 0x100,
+        .fixup          = fixup_p720t,
+        .init_early     = p720t_init_early,
+        .map_io         = p720t_map_io,
+        .init_irq       = clps711x_init_irq,
+        .timer          = &clps711x_timer,
+        .restart        = clps711x_restart,
+MACHINE_END
diff --git a/arch/arm/mach-dove/include/mach/bridge-regs.h b/arch/arm/mach-dove/include/mach/bridge-regs.h
index 226949dc4ac0..f953bb54aa9d 100644
--- a/arch/arm/mach-dove/include/mach/bridge-regs.h
+++ b/arch/arm/mach-dove/include/mach/bridge-regs.h
@@ -50,5 +50,6 @@
 #define POWER_MANAGEMENT        (BRIDGE_VIRT_BASE | 0x011c)
 
 #define TIMER_VIRT_BASE         (BRIDGE_VIRT_BASE | 0x0300)
+#define TIMER_PHYS_BASE         (BRIDGE_PHYS_BASE | 0x0300)
 
 #endif
diff --git a/arch/arm/mach-dove/include/mach/dove.h b/arch/arm/mach-dove/include/mach/dove.h
index ad1165d488c1..d52b0ef313b7 100644
--- a/arch/arm/mach-dove/include/mach/dove.h
+++ b/arch/arm/mach-dove/include/mach/dove.h
@@ -78,6 +78,7 @@
 
 /* North-South Bridge */
 #define BRIDGE_VIRT_BASE        (DOVE_SB_REGS_VIRT_BASE | 0x20000)
+#define BRIDGE_PHYS_BASE        (DOVE_SB_REGS_PHYS_BASE | 0x20000)
 
 /* Cryptographic Engine */
 #define DOVE_CRYPT_PHYS_BASE    (DOVE_SB_REGS_PHYS_BASE | 0x30000)
diff --git a/arch/arm/mach-imx/clk-imx35.c b/arch/arm/mach-imx/clk-imx35.c
index 920a8cc42726..c6422fb10bae 100644
--- a/arch/arm/mach-imx/clk-imx35.c
+++ b/arch/arm/mach-imx/clk-imx35.c
@@ -201,7 +201,6 @@ int __init mx35_clocks_init()
                         pr_err("i.MX35 clk %d: register failed with %ld\n",
                                 i, PTR_ERR(clk[i]));
 
-
         clk_register_clkdev(clk[pata_gate], NULL, "pata_imx");
         clk_register_clkdev(clk[can1_gate], NULL, "flexcan.0");
         clk_register_clkdev(clk[can2_gate], NULL, "flexcan.1");
@@ -264,6 +263,14 @@ int __init mx35_clocks_init()
         clk_prepare_enable(clk[iim_gate]);
         clk_prepare_enable(clk[emi_gate]);
 
+        /*
+         * SCC is needed to boot via mmc after a watchdog reset. The clock code
+         * before conversion to common clk also enabled UART1 (which isn't
+         * handled here and not needed for mmc) and IIM (which is enabled
+         * unconditionally above).
+         */
+        clk_prepare_enable(clk[scc_gate]);
+
         imx_print_silicon_rev("i.MX35", mx35_revision());
 
 #ifdef CONFIG_MXC_USE_EPIT
diff --git a/arch/arm/mach-imx/mach-imx27_visstrim_m10.c b/arch/arm/mach-imx/mach-imx27_visstrim_m10.c
index f76edb96a48a..ba09552fe5fe 100644
--- a/arch/arm/mach-imx/mach-imx27_visstrim_m10.c
+++ b/arch/arm/mach-imx/mach-imx27_visstrim_m10.c
@@ -38,7 +38,7 @@
 #include <asm/mach-types.h>
 #include <asm/mach/arch.h>
 #include <asm/mach/time.h>
-#include <asm/system.h>
+#include <asm/system_info.h>
 #include <mach/common.h>
 #include <mach/iomux-mx27.h>
 
diff --git a/arch/arm/mach-mmp/include/mach/gpio-pxa.h b/arch/arm/mach-mmp/include/mach/gpio-pxa.h
deleted file mode 100644
index 0e135a599f3e..000000000000
--- a/arch/arm/mach-mmp/include/mach/gpio-pxa.h
+++ /dev/null
@@ -1,29 +0,0 @@
-#ifndef __ASM_MACH_GPIO_PXA_H
-#define __ASM_MACH_GPIO_PXA_H
-
-#include <mach/addr-map.h>
-#include <mach/cputype.h>
-#include <mach/irqs.h>
-
-#define GPIO_REGS_VIRT  (APB_VIRT_BASE + 0x19000)
-
-#define BANK_OFF(n)     (((n) < 3) ? (n) << 2 : 0x100 + (((n) - 3) << 2))
-#define GPIO_REG(x)     (*(volatile u32 *)(GPIO_REGS_VIRT + (x)))
-
-#define gpio_to_bank(gpio)      ((gpio) >> 5)
-
-/* NOTE: these macros are defined here to make optimization of
- * gpio_{get,set}_value() to work when 'gpio' is a constant.
- * Usage of these macros otherwise is no longer recommended,
- * use generic GPIO API whenever possible.
- */
-#define GPIO_bit(gpio)  (1 << ((gpio) & 0x1f))
-
-#define GPLR(x)         GPIO_REG(BANK_OFF(gpio_to_bank(x)) + 0x00)
-#define GPDR(x)         GPIO_REG(BANK_OFF(gpio_to_bank(x)) + 0x0c)
-#define GPSR(x)         GPIO_REG(BANK_OFF(gpio_to_bank(x)) + 0x18)
-#define GPCR(x)         GPIO_REG(BANK_OFF(gpio_to_bank(x)) + 0x24)
-
-#include <plat/gpio-pxa.h>
-
-#endif /* __ASM_MACH_GPIO_PXA_H */
diff --git a/arch/arm/mach-mv78xx0/include/mach/bridge-regs.h b/arch/arm/mach-mv78xx0/include/mach/bridge-regs.h
index c64dbb96dbad..eb187e0e059b 100644
--- a/arch/arm/mach-mv78xx0/include/mach/bridge-regs.h
+++ b/arch/arm/mach-mv78xx0/include/mach/bridge-regs.h
@@ -31,5 +31,6 @@
 #define IRQ_MASK_HIGH_OFF       0x0014
 
 #define TIMER_VIRT_BASE         (BRIDGE_VIRT_BASE | 0x0300)
+#define TIMER_PHYS_BASE         (BRIDGE_PHYS_BASE | 0x0300)
 
 #endif
diff --git a/arch/arm/mach-mv78xx0/include/mach/mv78xx0.h b/arch/arm/mach-mv78xx0/include/mach/mv78xx0.h
index 3674497162e3..e807c4c52a0b 100644
--- a/arch/arm/mach-mv78xx0/include/mach/mv78xx0.h
+++ b/arch/arm/mach-mv78xx0/include/mach/mv78xx0.h
@@ -42,6 +42,7 @@
 #define MV78XX0_CORE0_REGS_PHYS_BASE    0xf1020000
 #define MV78XX0_CORE1_REGS_PHYS_BASE    0xf1024000
 #define MV78XX0_CORE_REGS_VIRT_BASE     0xfe400000
+#define MV78XX0_CORE_REGS_PHYS_BASE     0xfe400000
 #define MV78XX0_CORE_REGS_SIZE          SZ_16K
 
 #define MV78XX0_PCIE_IO_PHYS_BASE(i)    (0xf0800000 + ((i) << 20))
@@ -59,6 +60,7 @@
  * Core-specific peripheral registers.
  */
 #define BRIDGE_VIRT_BASE        (MV78XX0_CORE_REGS_VIRT_BASE)
+#define BRIDGE_PHYS_BASE        (MV78XX0_CORE_REGS_PHYS_BASE)
 
 /*
  * Register Map
diff --git a/arch/arm/mach-mxs/mach-apx4devkit.c b/arch/arm/mach-mxs/mach-apx4devkit.c
index 5e90b9dcdef8..f5f061757deb 100644
--- a/arch/arm/mach-mxs/mach-apx4devkit.c
+++ b/arch/arm/mach-mxs/mach-apx4devkit.c
@@ -205,6 +205,16 @@ static int apx4devkit_phy_fixup(struct phy_device *phy)
         return 0;
 }
 
+static void __init apx4devkit_fec_phy_clk_enable(void)
+{
+        struct clk *clk;
+
+        /* Enable fec phy clock */
+        clk = clk_get_sys("enet_out", NULL);
+        if (!IS_ERR(clk))
+                clk_prepare_enable(clk);
+}
+
 static void __init apx4devkit_init(void)
 {
         mx28_soc_init();
@@ -225,6 +235,7 @@ static void __init apx4devkit_init(void)
         phy_register_fixup_for_uid(PHY_ID_KS8051, MICREL_PHY_ID_MASK,
                         apx4devkit_phy_fixup);
 
+        apx4devkit_fec_phy_clk_enable();
         mx28_add_fec(0, &mx28_fec_pdata);
 
         mx28_add_mxs_mmc(0, &apx4devkit_mmc_pdata);
diff --git a/arch/arm/mach-omap2/board-overo.c b/arch/arm/mach-omap2/board-overo.c
index 8fa2fc3a4c3c..779734d8ba37 100644
--- a/arch/arm/mach-omap2/board-overo.c
+++ b/arch/arm/mach-omap2/board-overo.c
@@ -494,8 +494,8 @@ static void __init overo_init(void)
 
         regulator_register_fixed(0, dummy_supplies, ARRAY_SIZE(dummy_supplies));
         omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
-        omap_hsmmc_init(mmc);
         overo_i2c_init();
+        omap_hsmmc_init(mmc);
         omap_display_init(&overo_dss_data);
         omap_serial_init();
         omap_sdrc_init(mt46h32m32lf6_sdrc_params,
diff --git a/arch/arm/mach-omap2/omap_hwmod_44xx_data.c b/arch/arm/mach-omap2/omap_hwmod_44xx_data.c
index d055b4725679..4cab6318d33e 100644
--- a/arch/arm/mach-omap2/omap_hwmod_44xx_data.c
+++ b/arch/arm/mach-omap2/omap_hwmod_44xx_data.c
@@ -1928,7 +1928,7 @@ static struct omap_hwmod_dma_info omap44xx_mcbsp1_sdma_reqs[] = {
 
 static struct omap_hwmod_opt_clk mcbsp1_opt_clks[] = {
         { .role = "pad_fck", .clk = "pad_clks_ck" },
-        { .role = "prcm_clk", .clk = "mcbsp1_sync_mux_ck" },
+        { .role = "prcm_fck", .clk = "mcbsp1_sync_mux_ck" },
 };
 
 static struct omap_hwmod omap44xx_mcbsp1_hwmod = {
@@ -1963,7 +1963,7 @@ static struct omap_hwmod_dma_info omap44xx_mcbsp2_sdma_reqs[] = {
 
 static struct omap_hwmod_opt_clk mcbsp2_opt_clks[] = {
         { .role = "pad_fck", .clk = "pad_clks_ck" },
-        { .role = "prcm_clk", .clk = "mcbsp2_sync_mux_ck" },
+        { .role = "prcm_fck", .clk = "mcbsp2_sync_mux_ck" },
 };
 
 static struct omap_hwmod omap44xx_mcbsp2_hwmod = {
@@ -1998,7 +1998,7 @@ static struct omap_hwmod_dma_info omap44xx_mcbsp3_sdma_reqs[] = {
 
 static struct omap_hwmod_opt_clk mcbsp3_opt_clks[] = {
         { .role = "pad_fck", .clk = "pad_clks_ck" },
-        { .role = "prcm_clk", .clk = "mcbsp3_sync_mux_ck" },
+        { .role = "prcm_fck", .clk = "mcbsp3_sync_mux_ck" },
 };
 
 static struct omap_hwmod omap44xx_mcbsp3_hwmod = {
@@ -2033,7 +2033,7 @@ static struct omap_hwmod_dma_info omap44xx_mcbsp4_sdma_reqs[] = {
 
 static struct omap_hwmod_opt_clk mcbsp4_opt_clks[] = {
         { .role = "pad_fck", .clk = "pad_clks_ck" },
-        { .role = "prcm_clk", .clk = "mcbsp4_sync_mux_ck" },
+        { .role = "prcm_fck", .clk = "mcbsp4_sync_mux_ck" },
 };
 
 static struct omap_hwmod omap44xx_mcbsp4_hwmod = {
@@ -3861,7 +3861,7 @@ static struct omap_hwmod_ocp_if omap44xx_l4_cfg__l3_main_2 = {
 };
 
 /* usb_host_fs -> l3_main_2 */
-static struct omap_hwmod_ocp_if omap44xx_usb_host_fs__l3_main_2 = {
+static struct omap_hwmod_ocp_if __maybe_unused omap44xx_usb_host_fs__l3_main_2 = {
         .master         = &omap44xx_usb_host_fs_hwmod,
         .slave          = &omap44xx_l3_main_2_hwmod,
         .clk            = "l3_div_ck",
@@ -3919,7 +3919,7 @@ static struct omap_hwmod_ocp_if omap44xx_l4_cfg__l3_main_3 = {
 };
 
 /* aess -> l4_abe */
-static struct omap_hwmod_ocp_if omap44xx_aess__l4_abe = {
+static struct omap_hwmod_ocp_if __maybe_unused omap44xx_aess__l4_abe = {
         .master         = &omap44xx_aess_hwmod,
         .slave          = &omap44xx_l4_abe_hwmod,
         .clk            = "ocp_abe_iclk",
@@ -4010,7 +4010,7 @@ static struct omap_hwmod_addr_space omap44xx_aess_addrs[] = {
 };
 
 /* l4_abe -> aess */
-static struct omap_hwmod_ocp_if omap44xx_l4_abe__aess = {
+static struct omap_hwmod_ocp_if __maybe_unused omap44xx_l4_abe__aess = {
         .master         = &omap44xx_l4_abe_hwmod,
         .slave          = &omap44xx_aess_hwmod,
         .clk            = "ocp_abe_iclk",
@@ -4028,7 +4028,7 @@ static struct omap_hwmod_addr_space omap44xx_aess_dma_addrs[] = {
 };
 
 /* l4_abe -> aess (dma) */
-static struct omap_hwmod_ocp_if omap44xx_l4_abe__aess_dma = {
+static struct omap_hwmod_ocp_if __maybe_unused omap44xx_l4_abe__aess_dma = {
         .master         = &omap44xx_l4_abe_hwmod,
         .slave          = &omap44xx_aess_hwmod,
         .clk            = "ocp_abe_iclk",
@@ -5854,7 +5854,7 @@ static struct omap_hwmod_addr_space omap44xx_usb_host_fs_addrs[] = {
 };
 
 /* l4_cfg -> usb_host_fs */
-static struct omap_hwmod_ocp_if omap44xx_l4_cfg__usb_host_fs = {
+static struct omap_hwmod_ocp_if __maybe_unused omap44xx_l4_cfg__usb_host_fs = {
         .master         = &omap44xx_l4_cfg_hwmod,
         .slave          = &omap44xx_usb_host_fs_hwmod,
         .clk            = "l4_div_ck",
@@ -6011,13 +6011,13 @@ static struct omap_hwmod_ocp_if *omap44xx_hwmod_ocp_ifs[] __initdata = {
         &omap44xx_iva__l3_main_2,
         &omap44xx_l3_main_1__l3_main_2,
         &omap44xx_l4_cfg__l3_main_2,
-        &omap44xx_usb_host_fs__l3_main_2,
+        /* &omap44xx_usb_host_fs__l3_main_2, */
         &omap44xx_usb_host_hs__l3_main_2,
         &omap44xx_usb_otg_hs__l3_main_2,
         &omap44xx_l3_main_1__l3_main_3,
         &omap44xx_l3_main_2__l3_main_3,
         &omap44xx_l4_cfg__l3_main_3,
-        &omap44xx_aess__l4_abe,
+        /* &omap44xx_aess__l4_abe, */
         &omap44xx_dsp__l4_abe,
         &omap44xx_l3_main_1__l4_abe,
         &omap44xx_mpu__l4_abe,
@@ -6026,8 +6026,8 @@ static struct omap_hwmod_ocp_if *omap44xx_hwmod_ocp_ifs[] __initdata = {
         &omap44xx_l4_cfg__l4_wkup,
         &omap44xx_mpu__mpu_private,
         &omap44xx_l4_cfg__ocp_wp_noc,
-        &omap44xx_l4_abe__aess,
-        &omap44xx_l4_abe__aess_dma,
+        /* &omap44xx_l4_abe__aess, */
+        /* &omap44xx_l4_abe__aess_dma, */
         &omap44xx_l3_main_2__c2c,
         &omap44xx_l4_wkup__counter_32k,
         &omap44xx_l4_cfg__ctrl_module_core,
@@ -6133,7 +6133,7 @@ static struct omap_hwmod_ocp_if *omap44xx_hwmod_ocp_ifs[] __initdata = {
         &omap44xx_l4_per__uart2,
         &omap44xx_l4_per__uart3,
         &omap44xx_l4_per__uart4,
-        &omap44xx_l4_cfg__usb_host_fs,
+        /* &omap44xx_l4_cfg__usb_host_fs, */
         &omap44xx_l4_cfg__usb_host_hs,
         &omap44xx_l4_cfg__usb_otg_hs,
         &omap44xx_l4_cfg__usb_tll_hs,
diff --git a/arch/arm/mach-omap2/twl-common.c b/arch/arm/mach-omap2/twl-common.c
index 119d5a910f3a..43a979075338 100644
--- a/arch/arm/mach-omap2/twl-common.c
+++ b/arch/arm/mach-omap2/twl-common.c
@@ -32,6 +32,7 @@
 #include "twl-common.h"
 #include "pm.h"
 #include "voltage.h"
+#include "mux.h"
 
 static struct i2c_board_info __initdata pmic_i2c_board_info = {
         .addr           = 0x48,
@@ -77,6 +78,7 @@ void __init omap4_pmic_init(const char *pmic_type,
                     struct twl6040_platform_data *twl6040_data, int twl6040_irq)
 {
         /* PMIC part*/
+        omap_mux_init_signal("sys_nirq1", OMAP_PIN_INPUT_PULLUP | OMAP_PIN_OFF_WAKEUPENABLE);
         strncpy(omap4_i2c1_board_info[0].type, pmic_type,
                 sizeof(omap4_i2c1_board_info[0].type));
         omap4_i2c1_board_info[0].irq = OMAP44XX_IRQ_SYS_1N;
diff --git a/arch/arm/mach-pxa/hx4700.c b/arch/arm/mach-pxa/hx4700.c
index d09da6a746b8..d3de84b0dcbe 100644
--- a/arch/arm/mach-pxa/hx4700.c
+++ b/arch/arm/mach-pxa/hx4700.c
@@ -127,7 +127,11 @@ static unsigned long hx4700_pin_config[] __initdata = {
         GPIO19_SSP2_SCLK,
         GPIO86_SSP2_RXD,
         GPIO87_SSP2_TXD,
-        GPIO88_GPIO,
+        GPIO88_GPIO | MFP_LPM_DRIVE_HIGH,       /* TSC2046_CS */
+
+        /* BQ24022 Regulator */
+        GPIO72_GPIO | MFP_LPM_KEEP_OUTPUT,      /* BQ24022_nCHARGE_EN */
+        GPIO96_GPIO | MFP_LPM_KEEP_OUTPUT,      /* BQ24022_ISET2 */
 
         /* HX4700 specific input GPIOs */
         GPIO12_GPIO | WAKEUP_ON_EDGE_RISE,      /* ASIC3_IRQ */
@@ -135,6 +139,10 @@ static unsigned long hx4700_pin_config[] __initdata = {
         GPIO14_GPIO,    /* nWLAN_IRQ */
 
         /* HX4700 specific output GPIOs */
+        GPIO61_GPIO | MFP_LPM_DRIVE_HIGH,       /* W3220_nRESET */
+        GPIO71_GPIO | MFP_LPM_DRIVE_HIGH,       /* ASIC3_nRESET */
+        GPIO81_GPIO | MFP_LPM_DRIVE_HIGH,       /* CPU_GP_nRESET */
+        GPIO116_GPIO | MFP_LPM_DRIVE_HIGH,      /* CPU_HW_nRESET */
         GPIO102_GPIO | MFP_LPM_DRIVE_LOW,       /* SYNAPTICS_POWER_ON */
 
         GPIO10_GPIO,    /* GSM_IRQ */
@@ -872,14 +880,19 @@ static struct gpio global_gpios[] = {
         { GPIO110_HX4700_LCD_LVDD_3V3_ON, GPIOF_OUT_INIT_HIGH, "LCD_LVDD" },
         { GPIO111_HX4700_LCD_AVDD_3V3_ON, GPIOF_OUT_INIT_HIGH, "LCD_AVDD" },
         { GPIO32_HX4700_RS232_ON,         GPIOF_OUT_INIT_HIGH, "RS232_ON" },
+        { GPIO61_HX4700_W3220_nRESET,     GPIOF_OUT_INIT_HIGH, "W3220_nRESET" },
         { GPIO71_HX4700_ASIC3_nRESET,     GPIOF_OUT_INIT_HIGH, "ASIC3_nRESET" },
+        { GPIO81_HX4700_CPU_GP_nRESET,    GPIOF_OUT_INIT_HIGH, "CPU_GP_nRESET" },
         { GPIO82_HX4700_EUART_RESET,      GPIOF_OUT_INIT_HIGH, "EUART_RESET" },
+        { GPIO116_HX4700_CPU_HW_nRESET,   GPIOF_OUT_INIT_HIGH, "CPU_HW_nRESET" },
 };
 
 static void __init hx4700_init(void)
 {
         int ret;
 
+        PCFR = PCFR_GPR_EN | PCFR_OPDE;
+
         pxa2xx_mfp_config(ARRAY_AND_SIZE(hx4700_pin_config));
         gpio_set_wake(GPIO12_HX4700_ASIC3_IRQ, 1);
         ret = gpio_request_array(ARRAY_AND_SIZE(global_gpios));
diff --git a/arch/arm/mach-versatile/pci.c b/arch/arm/mach-versatile/pci.c
index bec933b04ef0..e95bf84cc837 100644
--- a/arch/arm/mach-versatile/pci.c
+++ b/arch/arm/mach-versatile/pci.c
@@ -339,7 +339,6 @@ void __init pci_versatile_preinit(void)
 static int __init versatile_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
         int irq;
-        int devslot = PCI_SLOT(dev->devfn);
 
         /* slot,  pin,  irq
          *  24     1     27
diff --git a/arch/arm/mm/mm.h b/arch/arm/mm/mm.h
index c471436c7952..2e8a1efdf7b8 100644
--- a/arch/arm/mm/mm.h
+++ b/arch/arm/mm/mm.h
@@ -64,7 +64,7 @@ extern void __flush_dcache_page(struct address_space *mapping, struct page *page
 #ifdef CONFIG_ZONE_DMA
 extern phys_addr_t arm_dma_limit;
 #else
-#define arm_dma_limit ((u32)~0)
+#define arm_dma_limit ((phys_addr_t)~0)
 #endif
 
 extern phys_addr_t arm_lowmem_limit;
diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c
index e5dad60b558b..cf4528d51774 100644
--- a/arch/arm/mm/mmu.c
+++ b/arch/arm/mm/mmu.c
@@ -791,6 +791,79 @@ void __init iotable_init(struct map_desc *io_desc, int nr)
         }
 }
 
+#ifndef CONFIG_ARM_LPAE
+
+/*
+ * The Linux PMD is made of two consecutive section entries covering 2MB
+ * (see definition in include/asm/pgtable-2level.h).  However a call to
+ * create_mapping() may optimize static mappings by using individual
+ * 1MB section mappings.  This leaves the actual PMD potentially half
+ * initialized if the top or bottom section entry isn't used, leaving it
+ * open to problems if a subsequent ioremap() or vmalloc() tries to use
+ * the virtual space left free by that unused section entry.
+ *
+ * Let's avoid the issue by inserting dummy vm entries covering the unused
+ * PMD halves once the static mappings are in place.
+ */
+
+static void __init pmd_empty_section_gap(unsigned long addr)
+{
+        struct vm_struct *vm;
+
+        vm = early_alloc_aligned(sizeof(*vm), __alignof__(*vm));
+        vm->addr = (void *)addr;
+        vm->size = SECTION_SIZE;
+        vm->flags = VM_IOREMAP | VM_ARM_STATIC_MAPPING;
+        vm->caller = pmd_empty_section_gap;
+        vm_area_add_early(vm);
+}
+
+static void __init fill_pmd_gaps(void)
+{
+        struct vm_struct *vm;
+        unsigned long addr, next = 0;
+        pmd_t *pmd;
+
+        /* we're still single threaded hence no lock needed here */
+        for (vm = vmlist; vm; vm = vm->next) {
+                if (!(vm->flags & VM_ARM_STATIC_MAPPING))
+                        continue;
+                addr = (unsigned long)vm->addr;
+                if (addr < next)
+                        continue;
+
+                /*
+                 * Check if this vm starts on an odd section boundary.
+                 * If so and the first section entry for this PMD is free
+                 * then we block the corresponding virtual address.
+                 */
+                if ((addr & ~PMD_MASK) == SECTION_SIZE) {
+                        pmd = pmd_off_k(addr);
+                        if (pmd_none(*pmd))
+                                pmd_empty_section_gap(addr & PMD_MASK);
+                }
+
+                /*
+                 * Then check if this vm ends on an odd section boundary.
+                 * If so and the second section entry for this PMD is empty
+                 * then we block the corresponding virtual address.
+                 */
+                addr += vm->size;
+                if ((addr & ~PMD_MASK) == SECTION_SIZE) {
+                        pmd = pmd_off_k(addr) + 1;
+                        if (pmd_none(*pmd))
+                                pmd_empty_section_gap(addr);
+                }
+
+                /* no need to look at any vm entry until we hit the next PMD */
+                next = (addr + PMD_SIZE - 1) & PMD_MASK;
+        }
+}
+
+#else
+#define fill_pmd_gaps() do { } while (0)
+#endif
+
 static void * __initdata vmalloc_min =
         (void *)(VMALLOC_END - (240 << 20) - VMALLOC_OFFSET);
 
@@ -1072,6 +1145,7 @@ static void __init devicemaps_init(struct machine_desc *mdesc)
          */
         if (mdesc->map_io)
                 mdesc->map_io();
+        fill_pmd_gaps();
 
         /*
          * Finally flush the caches and tlb to ensure that we're in a
diff --git a/arch/powerpc/kvm/book3s_hv_rmhandlers.S b/arch/powerpc/kvm/book3s_hv_rmhandlers.S
index a84aafce2a12..a1044f43becd 100644
--- a/arch/powerpc/kvm/book3s_hv_rmhandlers.S
+++ b/arch/powerpc/kvm/book3s_hv_rmhandlers.S
@@ -810,7 +810,7 @@ END_FTR_SECTION_IFSET(CPU_FTR_ARCH_201)
         lwz     r3,VCORE_NAPPING_THREADS(r5)
         lwz     r4,VCPU_PTID(r9)
         li      r0,1
-        sldi    r0,r0,r4
+        sld     r0,r0,r4
         andc.   r3,r3,r0                /* no sense IPI'ing ourselves */
         beq     43f
         mulli   r4,r4,PACA_SIZE         /* get paca for thread 0 */
diff --git a/arch/powerpc/xmon/xmon.c b/arch/powerpc/xmon/xmon.c
index 0f3ab06d2222..eab3492a45c5 100644
--- a/arch/powerpc/xmon/xmon.c
+++ b/arch/powerpc/xmon/xmon.c
@@ -971,7 +971,7 @@ static int cpu_cmd(void)
                 /* print cpus waiting or in xmon */
                 printf("cpus stopped:");
                 count = 0;
-                for (cpu = 0; cpu < NR_CPUS; ++cpu) {
+                for_each_possible_cpu(cpu) {
                         if (cpumask_test_cpu(cpu, &cpus_in_xmon)) {
                                 if (count == 0)
                                         printf(" %x", cpu);
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index be3cea4407ff..57e168e27b5b 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -3934,6 +3934,9 @@ static void kvm_mmu_remove_some_alloc_mmu_pages(struct kvm *kvm,
 {
         struct kvm_mmu_page *page;
 
+        if (list_empty(&kvm->arch.active_mmu_pages))
+                return;
+
         page = container_of(kvm->arch.active_mmu_pages.prev,
                             struct kvm_mmu_page, link);
         kvm_mmu_prepare_zap_page(kvm, page, invalid_list);