diff options
| author | Xiubo Li <lixiubo@cmss.chinamobile.com> | 2016-01-15 19:35:25 +0800 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2016-01-22 16:48:34 +0000 |
| commit | 0d55ad456337487e8cdb72acdd520050e575a0bd (patch) | |
| tree | a2110934423c2848e961cbe6e192560244726d46 /sound/soc/fsl/mpc5200_psc_ac97.c | |
| parent | 822ad70a2f5c420da5baa9f4354e6b7813ca6da9 (diff) | |
ASoC: fsl-mpc5200: Use usleep_range() instead of msleep()
Since msleep() will sleep longer than intended time for values less
than 20ms, this patch allows the use of usleep_range for just 1ms.
usleep_range is a finer precision implementation of msleep and is
designed to be a drop-in replacement for udelay where a precise
sleep/busy-wait is unnecessary.
More details see Documentation/timers/timers-howto.txt.
Signed-off-by: Xiubo Li <lixiubo@cmss.chinamobile.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc/fsl/mpc5200_psc_ac97.c')
| -rw-r--r-- | sound/soc/fsl/mpc5200_psc_ac97.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/sound/soc/fsl/mpc5200_psc_ac97.c b/sound/soc/fsl/mpc5200_psc_ac97.c index 0bab76051fd8..243700cc29e6 100644 --- a/sound/soc/fsl/mpc5200_psc_ac97.c +++ b/sound/soc/fsl/mpc5200_psc_ac97.c @@ -13,6 +13,7 @@ #include <linux/of_device.h> #include <linux/of_platform.h> #include <linux/delay.h> +#include <linux/time.h> #include <sound/pcm.h> #include <sound/pcm_params.h> @@ -127,7 +128,7 @@ static void psc_ac97_cold_reset(struct snd_ac97 *ac97) mutex_unlock(&psc_dma->mutex); - msleep(1); + usleep_range(1000, 2000); psc_ac97_warm_reset(ac97); } |