linux-kernel - [PATCH] ASoC: rt5660: use msleep() for long delay

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Date:   Thu, 12 Jan 2017 11:47:45 +0100
From:   Nicholas Mc Guire <hofrat@...dl.org>
To:     Bard Liao <bardliao@...ltek.com>
Cc:     Oder Chiou <oder_chiou@...ltek.com>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>, alsa-devel@...a-project.org,
        linux-kernel@...r.kernel.org, Nicholas Mc Guire <hofrat@...dl.org>
Subject: [PATCH] ASoC: rt5660: use msleep() for long delay

ulseep_range() uses hrtimers and provides no advantage over msleep()
for larger delays. For this large delay msleep() is preferable.

Link: http://lkml.org/lkml/2017/1/11/377
Fixes: commit 2b26dd4c1fc5 ("ASoC: rt5660: add rt5660 codec driver")
Signed-off-by: Nicholas Mc Guire <hofrat@...dl.org>
---

Problem was found by cocinelle script.

Patch was compile tested with: x86_64_defconfig + CONFIG_COMPILE_TEST=y
SND_SOC=m + SND_SOC_ALL_CODECS=m (implies SND_SOC_RT5660=m)
(2 sparse warnings - fix in a seperate patch)

Patch is aginast 4.10-rc3 (localversion-next is next-20170112)

 sound/soc/codecs/rt5660.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sound/soc/codecs/rt5660.c b/sound/soc/codecs/rt5660.c
index 76cf76a..78a77bc 100644
--- a/sound/soc/codecs/rt5660.c
+++ b/sound/soc/codecs/rt5660.c
@@ -1152,7 +1152,7 @@ static int rt5660_resume(struct snd_soc_codec *codec)
 	struct rt5660_priv *rt5660 = snd_soc_codec_get_drvdata(codec);
 
 	if (rt5660->pdata.poweroff_codec_in_suspend)
-		usleep_range(350000, 400000);
+		msleep(350);
 
 	regcache_cache_only(rt5660->regmap, false);
 	regcache_sync(rt5660->regmap);
-- 
2.1.4