#include #include "perf_regs.h" #include "thread.h" #include "map.h" #include "event.h" #include "debug.h" #include "tests/tests.h" #define STACK_SIZE 8192 static int sample_ustack(struct perf_sample *sample, struct thread *thread, u64 *regs) { struct stack_dump *stack = &sample->user_stack; struct map *map; unsigned long sp; u64 stack_size, *buf; buf = malloc(STACK_SIZE); if (!buf) { pr_debug("failed to allocate sample uregs data\n"); return -1; } sp = (unsigned long) regs[PERF_REG_ARM_SP]; map = map_groups__find(thread->mg, MAP__VARIABLE, (u64) sp); if (!map) { pr_debug("failed to get stack map\n"); free(buf); return -1; } stack_size = map->end - sp; stack_size = stack_size > STACK_SIZE ? STACK_SIZE : stack_size; memcpy(buf, (void *) sp, stack_size); stack->data = (char *) buf; stack->size = stack_size; return 0; } int test__arch_unwind_sample(struct perf_sample *sample, struct thread *thread) { struct regs_dump *regs = &sample->user_regs; u64 *buf; buf = calloc(1, sizeof(u64) * PERF_REGS_MAX); if (!buf) { pr_debug("failed to allocate sample uregs data\n"); return -1; } perf_regs_load(buf); regs->abi = PERF_SAMPLE_REGS_ABI; regs->regs = buf; regs->mask = PERF_REGS_MASK; return sample_ustack(sample, thread, buf); } input type='submit' value='switch'/> net-next plumbingsTobias Klauser

path: root/sound/soc/intel/atom/sst-mfld-dsp.h

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author	Jisheng Zhang <jszhang@marvell.com>	2016-11-10 17:21:29 +0800
committer	Mark Brown <broonie@kernel.org>	2016-11-11 15:38:08 +0000
commit	09f2ba0b0b7c44ecea49cf69a708203b76ba5535 (patch)
tree	042df33ac99f77d8b86ac427431e267c33561c35 /sound/soc/samsung/smdk_wm8994pcm.c
parent	1001354ca34179f3db924eb66672442a173147dc (diff)

regulator: gpio: properly check return value of of_get_named_gpio

The function of_get_named_gpio() could return -ENOENT, -EPROBE_DEFER -EINVAL and so on. Currently, for the optional property "enable-gpio", we only check -EPROBE_DEFER, this is not enough since there may be misconfigured "enable-gpio" in the DTB, of_get_named_gpio() will return -EINVAL in this case, we should return immediately here. And for the optional property "gpios", we didn't check the return value, the driver will continue to the point where gpio_request_array() is called, it doesn't make sense to continue if we got -EPROBE_DEFER or -EINVAL here. This patch tries to address these two issues by properly checking the return value of of_get_named_gpio. Signed-off-by: Jisheng Zhang <jszhang@marvell.com> Signed-off-by: Mark Brown <broonie@kernel.org>

Diffstat (limited to 'sound/soc/samsung/smdk_wm8994pcm.c')