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It uses 25% margin consistent with mmc_delay() for timing flexibility. Signed-off-by: Judith Mendez --- Changes since v1: - add patch 2/3 --- drivers/mmc/core/core.h | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/drivers/mmc/core/core.h b/drivers/mmc/core/core.h index a028b48be1644..55e9fb3bab9f7 100644 --- a/drivers/mmc/core/core.h +++ b/drivers/mmc/core/core.h @@ -73,6 +73,19 @@ static inline void mmc_delay(unsigned int ms) msleep(ms); } +static inline void mmc_delay_us(unsigned int us) +{ + if (us < 1000) { + usleep_range(us, us + (us >> 2)); + } else { + unsigned int rem_us = us % 1000; + + msleep(us / 1000); + if (rem_us) + usleep_range(rem_us, rem_us + (rem_us >> 2)); + } +} + void mmc_rescan(struct work_struct *work); void mmc_start_host(struct mmc_host *host); void __mmc_stop_host(struct mmc_host *host); -- 2.54.0