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regmap: Simplify implementation of the regmap_read_poll_timeout() macro

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Simplify the implementation of the macro regmap_read_poll_timeout()
by using the macro read_poll_timeout().

Signed-off-by: Dejin Zheng <zhengdejin5@gmail.com>
Link: https://lore.kernel.org/r/20200420134647.9121-2-zhengdejin5@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Dejin Zheng 2020-04-20 21:46:46 +08:00 committed by Mark Brown
parent 3ada1b176e
commit e44ab4e14d
No known key found for this signature in database
GPG key ID: 24D68B725D5487D0
1 changed files with 5 additions and 20 deletions
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25
include/linux/regmap.h
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@ -17,6 +17,7 @@
#include <linux/err.h>
#include <linux/bug.h>
#include <linux/lockdep.h>
#include <linux/iopoll.h>
struct module;
struct clk;
@ -130,26 +131,10 @@ struct reg_sequence {
*/
#define regmap_read_poll_timeout(map, addr, val, cond, sleep_us, timeout_us) \
({ \
u64 __timeout_us = (timeout_us); \
unsigned long __sleep_us = (sleep_us); \
ktime_t __timeout = ktime_add_us(ktime_get(), __timeout_us); \
int __ret; \
might_sleep_if(__sleep_us); \
for (;;) { \
__ret = regmap_read((map), (addr), &(val)); \
if (__ret) \
break; \
if (cond) \
break; \
if ((__timeout_us) && \
ktime_compare(ktime_get(), __timeout) > 0) { \
__ret = regmap_read((map), (addr), &(val)); \
break; \
} \
if (__sleep_us) \
usleep_range((__sleep_us >> 2) + 1, __sleep_us); \
} \
__ret ?: ((cond) ? 0 : -ETIMEDOUT); \
int __ret, __tmp; \
__tmp = read_poll_timeout(regmap_read, __ret, __ret || (cond), \
sleep_us, timeout_us, false, (map), (addr), &(val)); \
__ret ?: __tmp; \
})
/**