Commit 96455380 authored Nov 14, 2017 by Wolfram Sang Committed by Ulf Hansson Dec 11, 2017

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>

parent 97618aca

drivers/mmc/core/core.h

+3 −5

Original line number	Diff line number	Diff line
		@@ -62,13 +62,11 @@ 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);
		void mmc_start_host(struct mmc_host *host);