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@xxxxxxxxxxxxxxxxxxxx> --- sound/soc/fsl/mpc5200_psc_ac97.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) 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); } -- 1.8.3.1 _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
