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-rw-r--r--arch/arm/include/asm/ptrace.h3
-rw-r--r--arch/arm/include/asm/spinlock.h17
-rw-r--r--arch/arm/kernel/traps.c28
-rw-r--r--arch/arm/mach-pxa/stargate2.c17
-rw-r--r--arch/arm/mach-tegra/cpuidle-tegra20.c2
-rw-r--r--arch/arm/probes/kprobes/test-core.c59
-rw-r--r--arch/arm/vdso/vgettimeofday.c2
7 files changed, 33 insertions, 95 deletions
diff --git a/arch/arm/include/asm/ptrace.h b/arch/arm/include/asm/ptrace.h
index e9c9a117bd25..c7cdbb43ae7c 100644
--- a/arch/arm/include/asm/ptrace.h
+++ b/arch/arm/include/asm/ptrace.h
@@ -126,8 +126,7 @@ extern unsigned long profile_pc(struct pt_regs *regs);
/*
* kprobe-based event tracer support
*/
-#include <linux/stddef.h>
-#include <linux/types.h>
+#include <linux/compiler.h>
#define MAX_REG_OFFSET (offsetof(struct pt_regs, ARM_ORIG_r0))
extern int regs_query_register_offset(const char *name);
diff --git a/arch/arm/include/asm/spinlock.h b/arch/arm/include/asm/spinlock.h
index 25cb465c8538..099c78fcf62d 100644
--- a/arch/arm/include/asm/spinlock.h
+++ b/arch/arm/include/asm/spinlock.h
@@ -53,8 +53,6 @@ static inline void dsb_sev(void)
* memory.
*/
-#define arch_spin_lock_flags(lock, flags) arch_spin_lock(lock)
-
static inline void arch_spin_lock(arch_spinlock_t *lock)
{
unsigned long tmp;
@@ -74,7 +72,7 @@ static inline void arch_spin_lock(arch_spinlock_t *lock)
while (lockval.tickets.next != lockval.tickets.owner) {
wfe();
- lockval.tickets.owner = ACCESS_ONCE(lock->tickets.owner);
+ lockval.tickets.owner = READ_ONCE(lock->tickets.owner);
}
smp_mb();
@@ -194,9 +192,6 @@ static inline void arch_write_unlock(arch_rwlock_t *rw)
dsb_sev();
}
-/* write_can_lock - would write_trylock() succeed? */
-#define arch_write_can_lock(x) (ACCESS_ONCE((x)->lock) == 0)
-
/*
* Read locks are a bit more hairy:
* - Exclusively load the lock value.
@@ -274,14 +269,4 @@ static inline int arch_read_trylock(arch_rwlock_t *rw)
}
}
-/* read_can_lock - would read_trylock() succeed? */
-#define arch_read_can_lock(x) (ACCESS_ONCE((x)->lock) < 0x80000000)
-
-#define arch_read_lock_flags(lock, flags) arch_read_lock(lock)
-#define arch_write_lock_flags(lock, flags) arch_write_lock(lock)
-
-#define arch_spin_relax(lock) cpu_relax()
-#define arch_read_relax(lock) cpu_relax()
-#define arch_write_relax(lock) cpu_relax()
-
#endif /* __ASM_SPINLOCK_H */
diff --git a/arch/arm/kernel/traps.c b/arch/arm/kernel/traps.c
index 948c648fea00..0fcd82f01388 100644
--- a/arch/arm/kernel/traps.c
+++ b/arch/arm/kernel/traps.c
@@ -154,30 +154,26 @@ static void dump_mem(const char *lvl, const char *str, unsigned long bottom,
set_fs(fs);
}
-static void dump_instr(const char *lvl, struct pt_regs *regs)
+static void __dump_instr(const char *lvl, struct pt_regs *regs)
{
unsigned long addr = instruction_pointer(regs);
const int thumb = thumb_mode(regs);
const int width = thumb ? 4 : 8;
- mm_segment_t fs;
char str[sizeof("00000000 ") * 5 + 2 + 1], *p = str;
int i;
/*
- * We need to switch to kernel mode so that we can use __get_user
- * to safely read from kernel space. Note that we now dump the
- * code first, just in case the backtrace kills us.
+ * Note that we now dump the code first, just in case the backtrace
+ * kills us.
*/
- fs = get_fs();
- set_fs(KERNEL_DS);
for (i = -4; i < 1 + !!thumb; i++) {
unsigned int val, bad;
if (thumb)
- bad = __get_user(val, &((u16 *)addr)[i]);
+ bad = get_user(val, &((u16 *)addr)[i]);
else
- bad = __get_user(val, &((u32 *)addr)[i]);
+ bad = get_user(val, &((u32 *)addr)[i]);
if (!bad)
p += sprintf(p, i == 0 ? "(%0*x) " : "%0*x ",
@@ -188,8 +184,20 @@ static void dump_instr(const char *lvl, struct pt_regs *regs)
}
}
printk("%sCode: %s\n", lvl, str);
+}
- set_fs(fs);
+static void dump_instr(const char *lvl, struct pt_regs *regs)
+{
+ mm_segment_t fs;
+
+ if (!user_mode(regs)) {
+ fs = get_fs();
+ set_fs(KERNEL_DS);
+ __dump_instr(lvl, regs);
+ set_fs(fs);
+ } else {
+ __dump_instr(lvl, regs);
+ }
}
#ifdef CONFIG_ARM_UNWIND
diff --git a/arch/arm/mach-pxa/stargate2.c b/arch/arm/mach-pxa/stargate2.c
index 2d45d18b1a5e..6b7df6fd2448 100644
--- a/arch/arm/mach-pxa/stargate2.c
+++ b/arch/arm/mach-pxa/stargate2.c
@@ -29,6 +29,7 @@
#include <linux/platform_data/pcf857x.h>
#include <linux/platform_data/at24.h>
#include <linux/smc91x.h>
+#include <linux/gpio/machine.h>
#include <linux/gpio.h>
#include <linux/leds.h>
@@ -52,7 +53,6 @@
#include <linux/spi/spi.h>
#include <linux/spi/pxa2xx_spi.h>
#include <linux/mfd/da903x.h>
-#include <linux/platform_data/sht15.h>
#include "devices.h"
#include "generic.h"
@@ -137,17 +137,18 @@ static unsigned long sg2_im2_unified_pin_config[] __initdata = {
GPIO10_GPIO, /* large basic connector pin 23 */
};
-static struct sht15_platform_data platform_data_sht15 = {
- .gpio_data = 100,
- .gpio_sck = 98,
+static struct gpiod_lookup_table sht15_gpiod_table = {
+ .dev_id = "sht15",
+ .table = {
+ /* FIXME: should this have |GPIO_OPEN_DRAIN set? */
+ GPIO_LOOKUP("gpio-pxa", 100, "data", GPIO_ACTIVE_HIGH),
+ GPIO_LOOKUP("gpio-pxa", 98, "clk", GPIO_ACTIVE_HIGH),
+ },
};
static struct platform_device sht15 = {
.name = "sht15",
.id = -1,
- .dev = {
- .platform_data = &platform_data_sht15,
- },
};
static struct regulator_consumer_supply stargate2_sensor_3_con[] = {
@@ -608,6 +609,7 @@ static void __init imote2_init(void)
imote2_stargate2_init();
+ gpiod_add_lookup_table(&sht15_gpiod_table);
platform_add_devices(imote2_devices, ARRAY_SIZE(imote2_devices));
i2c_register_board_info(0, imote2_i2c_board_info,
@@ -988,6 +990,7 @@ static void __init stargate2_init(void)
imote2_stargate2_init();
+ gpiod_add_lookup_table(&sht15_gpiod_table);
platform_add_devices(ARRAY_AND_SIZE(stargate2_devices));
i2c_register_board_info(0, ARRAY_AND_SIZE(stargate2_i2c_board_info));
diff --git a/arch/arm/mach-tegra/cpuidle-tegra20.c b/arch/arm/mach-tegra/cpuidle-tegra20.c
index 76e4c83cd5c8..3f24addd7972 100644
--- a/arch/arm/mach-tegra/cpuidle-tegra20.c
+++ b/arch/arm/mach-tegra/cpuidle-tegra20.c
@@ -179,7 +179,7 @@ static int tegra20_idle_lp2_coupled(struct cpuidle_device *dev,
bool entered_lp2 = false;
if (tegra_pending_sgi())
- ACCESS_ONCE(abort_flag) = true;
+ WRITE_ONCE(abort_flag, true);
cpuidle_coupled_parallel_barrier(dev, &abort_barrier);
diff --git a/arch/arm/probes/kprobes/test-core.c b/arch/arm/probes/kprobes/test-core.c
index 1c98a87786ca..9ed0129bed3c 100644
--- a/arch/arm/probes/kprobes/test-core.c
+++ b/arch/arm/probes/kprobes/test-core.c
@@ -227,7 +227,6 @@ static bool test_regs_ok;
static int test_func_instance;
static int pre_handler_called;
static int post_handler_called;
-static int jprobe_func_called;
static int kretprobe_handler_called;
static int tests_failed;
@@ -370,50 +369,6 @@ static int test_kprobe(long (*func)(long, long))
return 0;
}
-static void __kprobes jprobe_func(long r0, long r1)
-{
- jprobe_func_called = test_func_instance;
- if (r0 == FUNC_ARG1 && r1 == FUNC_ARG2)
- test_regs_ok = true;
- jprobe_return();
-}
-
-static struct jprobe the_jprobe = {
- .entry = jprobe_func,
-};
-
-static int test_jprobe(long (*func)(long, long))
-{
- int ret;
-
- the_jprobe.kp.addr = (kprobe_opcode_t *)func;
- ret = register_jprobe(&the_jprobe);
- if (ret < 0) {
- pr_err("FAIL: register_jprobe failed with %d\n", ret);
- return ret;
- }
-
- ret = call_test_func(func, true);
-
- unregister_jprobe(&the_jprobe);
- the_jprobe.kp.flags = 0; /* Clear disable flag to allow reuse */
-
- if (!ret)
- return -EINVAL;
- if (jprobe_func_called != test_func_instance) {
- pr_err("FAIL: jprobe handler function not called\n");
- return -EINVAL;
- }
- if (!call_test_func(func, false))
- return -EINVAL;
- if (jprobe_func_called == test_func_instance) {
- pr_err("FAIL: probe called after unregistering\n");
- return -EINVAL;
- }
-
- return 0;
-}
-
static int __kprobes
kretprobe_handler(struct kretprobe_instance *ri, struct pt_regs *regs)
{
@@ -451,7 +406,7 @@ static int test_kretprobe(long (*func)(long, long))
}
if (!call_test_func(func, false))
return -EINVAL;
- if (jprobe_func_called == test_func_instance) {
+ if (kretprobe_handler_called == test_func_instance) {
pr_err("FAIL: kretprobe called after unregistering\n");
return -EINVAL;
}
@@ -468,18 +423,6 @@ static int run_api_tests(long (*func)(long, long))
if (ret < 0)
return ret;
- pr_info(" jprobe\n");
- ret = test_jprobe(func);
-#if defined(CONFIG_THUMB2_KERNEL) && !defined(MODULE)
- if (ret == -EINVAL) {
- pr_err("FAIL: Known longtime bug with jprobe on Thumb kernels\n");
- tests_failed = ret;
- ret = 0;
- }
-#endif
- if (ret < 0)
- return ret;
-
pr_info(" kretprobe\n");
ret = test_kretprobe(func);
if (ret < 0)
diff --git a/arch/arm/vdso/vgettimeofday.c b/arch/arm/vdso/vgettimeofday.c
index 79214d5ff097..a9dd619c6c29 100644
--- a/arch/arm/vdso/vgettimeofday.c
+++ b/arch/arm/vdso/vgettimeofday.c
@@ -35,7 +35,7 @@ static notrace u32 __vdso_read_begin(const struct vdso_data *vdata)
{
u32 seq;
repeat:
- seq = ACCESS_ONCE(vdata->seq_count);
+ seq = READ_ONCE(vdata->seq_count);
if (seq & 1) {
cpu_relax();
goto repeat;
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