diff options
| author | Sujit Reddy Thumma <sthumma@codeaurora.org> | 2011-11-01 20:05:07 +0530 |
|---|---|---|
| committer | Subhash Jadavani <subhashj@codeaurora.org> | 2016-05-31 15:20:55 -0700 |
| commit | eb645aebffa8e1c12c56ff1d3e659391c38b6b16 (patch) | |
| tree | c6febb5bcc48705aef64f092fdc921904f2f9685 | |
| parent | d0cd16e2aea4a574f527c4351230d299fcd42b32 (diff) | |
mmc: core: Use usleep_range for delays less than 20ms
msleep of any delay less than 20ms (or 2 jiffies) would
give an unpredictable delay (most of the times as ~20ms).
Use usleep_range in mmc_delay() for delays less than two jiffies.
Change-Id: I7cf22532af2b4048afccf07a5aeba89d808799f0
Signed-off-by: Sujit Reddy Thumma <sthumma@codeaurora.org>
| -rw-r--r-- | drivers/mmc/core/core.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/mmc/core/core.h b/drivers/mmc/core/core.h index c5cb975dbcbb..d57daacbfcca 100644 --- a/drivers/mmc/core/core.h +++ b/drivers/mmc/core/core.h @@ -63,6 +63,8 @@ static inline void mmc_delay(unsigned int ms) if (ms < 1000 / HZ) { cond_resched(); mdelay(ms); + } else if (ms < jiffies_to_msecs(2)) { + usleep_range(ms * 1000, (ms + 1) * 1000); } else { msleep(ms); } |