Merge branches 'clockevents/4.4-fixes' and 'clockevents/4.5-fixes' of http://git.linaro.org/people/daniel.lezcano/linux into timers/urgent

Pull in fixes from Daniel Lezcano:

 - Fix the vt8500 timer leading to a system lock up when dealing with too
   small delta (Roman Volkov)

 - Select the CLKSRC_MMIO when the fsl_ftm_timer is enabled with COMPILE_TEST
   (Daniel Lezcano)

 - Prevent to compile timers using the 'iomem' API when the architecture has
   not HAS_IOMEM set (Richard Weinberger)

12 files changed, 67 insertions, 38 deletions

diff --git a/arch/mips/include/asm/uaccess.h b/arch/mips/include/asm/uaccess.h
index 5305d694ffe5..095ecafe6bd3 100644
--- a/arch/mips/include/asm/uaccess.h
+++ b/arch/mips/include/asm/uaccess.h
@@ -599,7 +599,7 @@ extern void __put_user_unknown(void);
  * On error, the variable @x is set to zero.
  */
 #define __get_user_unaligned(x,ptr) \
-        __get_user__unalignednocheck((x),(ptr),sizeof(*(ptr)))
+        __get_user_unaligned_nocheck((x),(ptr),sizeof(*(ptr)))
 
 /*
  * Yuck.  We need two variants, one for 64bit operation and one
@@ -620,8 +620,8 @@ extern void __get_user_unaligned_unknown(void);
 do {                                                                    \
         switch (size) {                                                 \
         case 1: __get_data_asm(val, "lb", ptr); break;                  \
-        case 2: __get_user_unaligned_asm(val, "ulh", ptr); break;       \
-        case 4: __get_user_unaligned_asm(val, "ulw", ptr); break;       \
+        case 2: __get_data_unaligned_asm(val, "ulh", ptr); break;       \
+        case 4: __get_data_unaligned_asm(val, "ulw", ptr); break;       \
         case 8: __GET_USER_UNALIGNED_DW(val, ptr); break;               \
         default: __get_user_unaligned_unknown(); break;                 \
         }                                                               \
@@ -1122,9 +1122,15 @@ extern size_t __copy_in_user_eva(void *__to, const void *__from, size_t __n);
         __cu_to = (to);                                                 \
         __cu_from = (from);                                             \
         __cu_len = (n);                                                 \
-        might_fault();                                                  \
-        __cu_len = __invoke_copy_from_user(__cu_to, __cu_from,          \
-                                           __cu_len);                   \
+        if (eva_kernel_access()) {                                      \
+                __cu_len = __invoke_copy_from_kernel(__cu_to,           \
+                                                     __cu_from,         \
+                                                     __cu_len);         \
+        } else {                                                        \
+                might_fault();                                          \
+                __cu_len = __invoke_copy_from_user(__cu_to, __cu_from,  \
+                                                   __cu_len);           \
+        }                                                               \
         __cu_len;                                                       \
 })
 
@@ -1229,16 +1235,28 @@ __clear_user(void __user *addr, __kernel_size_t size)
 {
         __kernel_size_t res;
 
-        might_fault();
-        __asm__ __volatile__(
-                "move\t$4, %1\n\t"
-                "move\t$5, $0\n\t"
-                "move\t$6, %2\n\t"
-                __MODULE_JAL(__bzero)
-                "move\t%0, $6"
-                : "=r" (res)
-                : "r" (addr), "r" (size)
-                : "$4", "$5", "$6", __UA_t0, __UA_t1, "$31");
+        if (eva_kernel_access()) {
+                __asm__ __volatile__(
+                        "move\t$4, %1\n\t"
+                        "move\t$5, $0\n\t"
+                        "move\t$6, %2\n\t"
+                        __MODULE_JAL(__bzero_kernel)
+                        "move\t%0, $6"
+                        : "=r" (res)
+                        : "r" (addr), "r" (size)
+                        : "$4", "$5", "$6", __UA_t0, __UA_t1, "$31");
+        } else {
+                might_fault();
+                __asm__ __volatile__(
+                        "move\t$4, %1\n\t"
+                        "move\t$5, $0\n\t"
+                        "move\t$6, %2\n\t"
+                        __MODULE_JAL(__bzero)
+                        "move\t%0, $6"
+                        : "=r" (res)
+                        : "r" (addr), "r" (size)
+                        : "$4", "$5", "$6", __UA_t0, __UA_t1, "$31");
+        }
 
         return res;
 }
@@ -1384,7 +1402,7 @@ static inline long strlen_user(const char __user *s)
                 might_fault();
                 __asm__ __volatile__(
                         "move\t$4, %1\n\t"
-                        __MODULE_JAL(__strlen_kernel_asm)
+                        __MODULE_JAL(__strlen_user_asm)
                         "move\t%0, $2"
                         : "=r" (res)
                         : "r" (s)
diff --git a/arch/mips/kernel/cps-vec.S b/arch/mips/kernel/cps-vec.S
index 8fd5a276cad2..ac81edd44563 100644
--- a/arch/mips/kernel/cps-vec.S
+++ b/arch/mips/kernel/cps-vec.S
@@ -257,7 +257,6 @@ LEAF(mips_cps_core_init)
         has_mt  t0, 3f
 
         .set    push
-        .set    mips64r2
         .set    mt
 
         /* Only allow 1 TC per VPE to execute... */
@@ -376,7 +375,6 @@ LEAF(mips_cps_boot_vpes)
          nop
 
         .set    push
-        .set    mips64r2
         .set    mt
 
 1:      /* Enter VPE configuration state */
diff --git a/arch/mips/kernel/mips_ksyms.c b/arch/mips/kernel/mips_ksyms.c
index 291af0b5c482..e2b6ab74643d 100644
--- a/arch/mips/kernel/mips_ksyms.c
+++ b/arch/mips/kernel/mips_ksyms.c
@@ -17,6 +17,7 @@
 #include <asm/fpu.h>
 #include <asm/msa.h>
 
+extern void *__bzero_kernel(void *__s, size_t __count);
 extern void *__bzero(void *__s, size_t __count);
 extern long __strncpy_from_kernel_nocheck_asm(char *__to,
                                               const char *__from, long __len);
@@ -64,6 +65,7 @@ EXPORT_SYMBOL(__copy_from_user_eva);
 EXPORT_SYMBOL(__copy_in_user_eva);
 EXPORT_SYMBOL(__copy_to_user_eva);
 EXPORT_SYMBOL(__copy_user_inatomic_eva);
+EXPORT_SYMBOL(__bzero_kernel);
 #endif
 EXPORT_SYMBOL(__bzero);
 EXPORT_SYMBOL(__strncpy_from_kernel_nocheck_asm);
diff --git a/arch/mips/kvm/emulate.c b/arch/mips/kvm/emulate.c
index d5fa3eaf39a1..41b1b090f56f 100644
--- a/arch/mips/kvm/emulate.c
+++ b/arch/mips/kvm/emulate.c
@@ -1581,7 +1581,7 @@ enum emulation_result kvm_mips_emulate_cache(uint32_t inst, uint32_t *opc,
 
         base = (inst >> 21) & 0x1f;
         op_inst = (inst >> 16) & 0x1f;
-        offset = inst & 0xffff;
+        offset = (int16_t)inst;
         cache = (inst >> 16) & 0x3;
         op = (inst >> 18) & 0x7;
 
diff --git a/arch/mips/kvm/locore.S b/arch/mips/kvm/locore.S
index 7bab3a4e8f7d..7e2210846b8b 100644
--- a/arch/mips/kvm/locore.S
+++ b/arch/mips/kvm/locore.S
@@ -157,9 +157,11 @@ FEXPORT(__kvm_mips_vcpu_run)
 
 FEXPORT(__kvm_mips_load_asid)
         /* Set the ASID for the Guest Kernel */
-        INT_SLL t0, t0, 1       /* with kseg0 @ 0x40000000, kernel */
-                                /* addresses shift to 0x80000000 */
-        bltz    t0, 1f          /* If kernel */
+        PTR_L   t0, VCPU_COP0(k1)
+        LONG_L  t0, COP0_STATUS(t0)
+        andi    t0, KSU_USER | ST0_ERL | ST0_EXL
+        xori    t0, KSU_USER
+        bnez    t0, 1f          /* If kernel */
          INT_ADDIU t1, k1, VCPU_GUEST_KERNEL_ASID  /* (BD)  */
         INT_ADDIU t1, k1, VCPU_GUEST_USER_ASID    /* else user */
 1:
@@ -474,9 +476,11 @@ __kvm_mips_return_to_guest:
         mtc0    t0, CP0_EPC
 
         /* Set the ASID for the Guest Kernel */
-        INT_SLL t0, t0, 1       /* with kseg0 @ 0x40000000, kernel */
-                                /* addresses shift to 0x80000000 */
-        bltz    t0, 1f          /* If kernel */
+        PTR_L   t0, VCPU_COP0(k1)
+        LONG_L  t0, COP0_STATUS(t0)
+        andi    t0, KSU_USER | ST0_ERL | ST0_EXL
+        xori    t0, KSU_USER
+        bnez    t0, 1f          /* If kernel */
          INT_ADDIU t1, k1, VCPU_GUEST_KERNEL_ASID  /* (BD)  */
         INT_ADDIU t1, k1, VCPU_GUEST_USER_ASID    /* else user */
 1:
diff --git a/arch/mips/kvm/mips.c b/arch/mips/kvm/mips.c
index 49ff3bfc007e..b9b803facdbf 100644
--- a/arch/mips/kvm/mips.c
+++ b/arch/mips/kvm/mips.c
@@ -279,7 +279,7 @@ struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id)
 
         if (!gebase) {
                 err = -ENOMEM;
-                goto out_free_cpu;
+                goto out_uninit_cpu;
         }
         kvm_debug("Allocated %d bytes for KVM Exception Handlers @ %p\n",
                   ALIGN(size, PAGE_SIZE), gebase);
@@ -343,6 +343,9 @@ struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id)
 out_free_gebase:
         kfree(gebase);
 
+out_uninit_cpu:
+        kvm_vcpu_uninit(vcpu);
+
 out_free_cpu:
         kfree(vcpu);
 
diff --git a/arch/mips/lib/memset.S b/arch/mips/lib/memset.S
index b8e63fd00375..8f0019a2e5c8 100644
--- a/arch/mips/lib/memset.S
+++ b/arch/mips/lib/memset.S
@@ -283,6 +283,8 @@ LEAF(memset)
 1:
 #ifndef CONFIG_EVA
 FEXPORT(__bzero)
+#else
+FEXPORT(__bzero_kernel)
 #endif
         __BUILD_BZERO LEGACY_MODE
 
diff --git a/arch/mips/mm/dma-default.c b/arch/mips/mm/dma-default.c
index d8117be729a2..730d394ce5f0 100644
--- a/arch/mips/mm/dma-default.c
+++ b/arch/mips/mm/dma-default.c
@@ -145,7 +145,7 @@ static void *mips_dma_alloc_coherent(struct device *dev, size_t size,
 
         gfp = massage_gfp_flags(dev, gfp);
 
-        if (IS_ENABLED(CONFIG_DMA_CMA) && !(gfp & GFP_ATOMIC))
+        if (IS_ENABLED(CONFIG_DMA_CMA) && gfpflags_allow_blocking(gfp))
                 page = dma_alloc_from_contiguous(dev,
                                         count, get_order(size));
         if (!page)
diff --git a/arch/mips/pci/pci-rt2880.c b/arch/mips/pci/pci-rt2880.c
index 8a978022630b..a245cad4372a 100644
--- a/arch/mips/pci/pci-rt2880.c
+++ b/arch/mips/pci/pci-rt2880.c
@@ -11,6 +11,7 @@
  *  by the Free Software Foundation.
  */
 
+#include <linux/delay.h>
 #include <linux/types.h>
 #include <linux/pci.h>
 #include <linux/io.h>
@@ -220,7 +221,6 @@ int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 static int rt288x_pci_probe(struct platform_device *pdev)
 {
         void __iomem *io_map_base;
-        int i;
 
         rt2880_pci_base = ioremap_nocache(RT2880_PCI_BASE, PAGE_SIZE);
 
@@ -232,8 +232,7 @@ static int rt288x_pci_probe(struct platform_device *pdev)
         ioport_resource.end = RT2880_PCI_IO_BASE + RT2880_PCI_IO_SIZE - 1;
 
         rt2880_pci_reg_write(0, RT2880_PCI_REG_PCICFG_ADDR);
-        for (i = 0; i < 0xfffff; i++)
-                ;
+        udelay(1);
 
         rt2880_pci_reg_write(0x79, RT2880_PCI_REG_ARBCTL);
         rt2880_pci_reg_write(0x07FF0001, RT2880_PCI_REG_BAR0SETUP_ADDR);
diff --git a/arch/mips/pmcs-msp71xx/msp_setup.c b/arch/mips/pmcs-msp71xx/msp_setup.c
index 4f925e06c414..9d293b3e9130 100644
--- a/arch/mips/pmcs-msp71xx/msp_setup.c
+++ b/arch/mips/pmcs-msp71xx/msp_setup.c
@@ -10,6 +10,8 @@
  * option) any later version.
  */
 
+#include <linux/delay.h>
+
 #include <asm/bootinfo.h>
 #include <asm/cacheflush.h>
 #include <asm/idle.h>
@@ -37,7 +39,6 @@ extern void msp_serial_setup(void);
 void msp7120_reset(void)
 {
         void *start, *end, *iptr;
-        register int i;
 
         /* Diasble all interrupts */
         local_irq_disable();
@@ -77,7 +78,7 @@ void msp7120_reset(void)
          */
 
         /* Wait a bit for the DDRC to settle */
-        for (i = 0; i < 100000000; i++);
+        mdelay(125);
 
 #if defined(CONFIG_PMC_MSP7120_GW)
         /*
diff --git a/arch/mips/sni/reset.c b/arch/mips/sni/reset.c
index 244f9427625b..6afa34346b81 100644
--- a/arch/mips/sni/reset.c
+++ b/arch/mips/sni/reset.c
@@ -3,6 +3,8 @@
  *
  *  Reset a SNI machine.
  */
+#include <linux/delay.h>
+
 #include <asm/io.h>
 #include <asm/reboot.h>
 #include <asm/sni.h>
@@ -24,7 +26,7 @@ static inline void kb_wait(void)
 /* XXX This ends up at the ARC firmware prompt ...  */
 void sni_machine_restart(char *command)
 {
-        int i, j;
+        int i;
 
         /* This does a normal via the keyboard controller like a PC.
            We can do that easier ...  */
@@ -32,9 +34,9 @@ void sni_machine_restart(char *command)
         for (;;) {
                 for (i = 0; i < 100; i++) {
                         kb_wait();
-                        for (j = 0; j < 100000 ; j++)
-                                /* nothing */;
+                        udelay(50);
                         outb_p(0xfe, 0x64);      /* pulse reset low */
+                        udelay(50);
                 }
         }
 }
diff --git a/arch/mips/vdso/Makefile b/arch/mips/vdso/Makefile
index ef5f348f386a..018f8c7b94f2 100644
--- a/arch/mips/vdso/Makefile
+++ b/arch/mips/vdso/Makefile
@@ -26,8 +26,8 @@ aflags-vdso := $(ccflags-vdso) \
 # the comments on that file.
 #
 ifndef CONFIG_CPU_MIPSR6
-  ifeq ($(call ld-ifversion, -gt, 22400000, y),)
-    $(warning MIPS VDSO requires binutils > 2.24)
+  ifeq ($(call ld-ifversion, -lt, 22500000, y),)
+    $(warning MIPS VDSO requires binutils >= 2.25)
     obj-vdso-y := $(filter-out gettimeofday.o, $(obj-vdso-y))
     ccflags-vdso += -DDISABLE_MIPS_VDSO
   endif