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mmc: core: use usleep_range rather than HZ magic in mmc_delay() 

Documentation/timers/timers-howto.txt recommends to use usleep_range for
delays 1-20ms. Let's adhere to it. No need for messing with HZ and still
do busy looping these days.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Wolfram Sang 2017-11-14 23:55:20 +01:00 committed by Ulf Hansson
parent 97618aca14
commit 96455380ec
1 changed files with 3 additions and 5 deletions
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8
drivers/mmc/core/core.h
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@ -62,12 +62,10 @@ void mmc_set_initial_state(struct mmc_host *host);
static inline void mmc_delay(unsigned int ms)
{
if (ms < 1000 / HZ) {
cond_resched();
mdelay(ms);
} else {
if (ms <= 20)
usleep_range(ms * 1000, ms * 1250);
else
msleep(ms);
}
}
void mmc_rescan(struct work_struct *work);