#ifndef _ASM_GENERIC_BITOPS_SCHED_H_ #define _ASM_GENERIC_BITOPS_SCHED_H_ #include /* unlikely() */ #include /* * Every architecture must define this function. It's the fastest * way of searching a 100-bit bitmap. It's guaranteed that at least * one of the 100 bits is cleared. */ static inline int sched_find_first_bit(const unsigned long *b) { #if BITS_PER_LONG == 64 if (b[0]) return __ffs(b[0]); return __ffs(b[1]) + 64; #elif BITS_PER_LONG == 32 if (b[0]) return __ffs(b[0]); if (b[1]) return __ffs(b[1]) + 32; if (b[2]) return __ffs(b[2]) + 64; return __ffs(b[3]) + 96; #else #error BITS_PER_LONG not defined #endif } #endif /* _ASM_GENERIC_BITOPS_SCHED_H_ */ class='main'>index : net-next.git
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authorJisheng Zhang <jszhang@marvell.com>2016-11-10 17:21:29 +0800
committerMark Brown <broonie@kernel.org>2016-11-11 15:38:08 +0000
commit09f2ba0b0b7c44ecea49cf69a708203b76ba5535 (patch)
tree042df33ac99f77d8b86ac427431e267c33561c35 /net/can/raw.c
parent1001354ca34179f3db924eb66672442a173147dc (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 'net/can/raw.c')