linux-kernel - [PATCH 3.16 031/212] ASoC: rt5640: use msleep() for long delays

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Date:   Thu, 01 Jun 2017 16:43:15 +0100
From:   Ben Hutchings <ben@...adent.org.uk>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC:     akpm@...ux-foundation.org, "Mark Brown" <broonie@...nel.org>,
        "Nicholas Mc Guire" <hofrat@...dl.org>
Subject: [PATCH 3.16 031/212] ASoC: rt5640: use msleep() for long delays

3.16.44-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Nicholas Mc Guire <hofrat@...dl.org>

commit 4a312c9c825adf74c0026c98fed4ab59ce190863 upstream.

ulseep_range() uses hrtimers and provides no advantage over msleep()
for larger delays. Fix up the 70/80ms delays here passing the "min"
value to msleep(). This reduces the load on the hrtimer subsystem.

Link: http://lkml.org/lkml/2017/1/11/377
Fixes: commit 246693ba7b0b ("ASoC: rt5640: change widget sequence for depop")
Signed-off-by: Nicholas Mc Guire <hofrat@...dl.org>
Signed-off-by: Mark Brown <broonie@...nel.org>
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 sound/soc/codecs/rt5640.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/sound/soc/codecs/rt5640.c
+++ b/sound/soc/codecs/rt5640.c
@@ -974,7 +974,7 @@ static int rt5640_hp_event(struct snd_so
 
 	case SND_SOC_DAPM_PRE_PMD:
 		rt5640->hp_mute = 1;
-		usleep_range(70000, 75000);
+		msleep(70);
 		break;
 
 	default:
@@ -1038,7 +1038,7 @@ static int rt5640_hp_post_event(struct s
 	switch (event) {
 	case SND_SOC_DAPM_POST_PMU:
 		if (!rt5640->hp_mute)
-			usleep_range(80000, 85000);
+			msleep(80);
 
 		break;