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regmap: Simplify implementation of the regmap_field_read_poll_timeout() macro

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

Signed-off-by: Dejin Zheng <zhengdejin5@gmail.com>
Link: https://lore.kernel.org/r/20200420134647.9121-3-zhengdejin5@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Dejin Zheng 2020-04-20 21:46:47 +08:00 committed by Mark Brown
parent e44ab4e14d
commit 148c01d176
No known key found for this signature in database
GPG key ID: 24D68B725D5487D0
1 changed files with 4 additions and 19 deletions
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23
include/linux/regmap.h
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@ -202,25 +202,10 @@ struct reg_sequence {
*/
#define regmap_field_read_poll_timeout(field, 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 pollret; \
might_sleep_if(__sleep_us); \
for (;;) { \
pollret = regmap_field_read((field), &(val)); \
if (pollret) \
break; \
if (cond) \
break; \
if (__timeout_us && ktime_compare(ktime_get(), timeout) > 0) { \
pollret = regmap_field_read((field), &(val)); \
break; \
} \
if (__sleep_us) \
usleep_range((__sleep_us >> 2) + 1, __sleep_us); \
} \
pollret ?: ((cond) ? 0 : -ETIMEDOUT); \
int __ret, __tmp; \
__tmp = read_poll_timeout(regmap_field_read, __ret, __ret || (cond), \
sleep_us, timeout_us, false, (field), &(val)); \
__ret ?: __tmp; \
})
#ifdef CONFIG_REGMAP