| Message ID | 1452857725-32414-3-git-send-email-lixiubo@cmss.chinamobile.com (mailing list archive) |
|---|---|
| State | Accepted |
| Commit | 0d55ad456337487e8cdb72acdd520050e575a0bd |
| Headers | show |
diff --git a/sound/soc/fsl/mpc5200_psc_ac97.c b/sound/soc/fsl/mpc5200_psc_ac97.c index 0bab760..243700c 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); }
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> --- sound/soc/fsl/mpc5200_psc_ac97.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)