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regmap: Simplify implementation of the regmap_read_poll_timeout() macro
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>
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1 changed files with 5 additions and 20 deletions
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@ -17,6 +17,7 @@
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#include <linux/err.h>
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#include <linux/bug.h>
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#include <linux/lockdep.h>
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#include <linux/iopoll.h>
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struct module;
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struct clk;
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@ -130,26 +131,10 @@ struct reg_sequence {
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*/
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#define regmap_read_poll_timeout(map, addr, val, cond, sleep_us, timeout_us) \
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({ \
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u64 __timeout_us = (timeout_us); \
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unsigned long __sleep_us = (sleep_us); \
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ktime_t __timeout = ktime_add_us(ktime_get(), __timeout_us); \
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int __ret; \
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might_sleep_if(__sleep_us); \
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for (;;) { \
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__ret = regmap_read((map), (addr), &(val)); \
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if (__ret) \
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break; \
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if (cond) \
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break; \
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if ((__timeout_us) && \
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ktime_compare(ktime_get(), __timeout) > 0) { \
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__ret = regmap_read((map), (addr), &(val)); \
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break; \
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} \
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if (__sleep_us) \
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usleep_range((__sleep_us >> 2) + 1, __sleep_us); \
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} \
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__ret ?: ((cond) ? 0 : -ETIMEDOUT); \
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int __ret, __tmp; \
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__tmp = read_poll_timeout(regmap_read, __ret, __ret || (cond), \
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sleep_us, timeout_us, false, (map), (addr), &(val)); \
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__ret ?: __tmp; \
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})
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/**
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