linux-kernel - [PATCH 3.4 025/146] ASoC: cs4271: Increase delay time after reset

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Date:	Tue, 15 Sep 2015 17:02:20 +0800
From:	lizf@...nel.org
To:	stable@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org,
	Pascal Huerst <pascal.huerst@...il.com>,
	Mark Brown <broonie@...nel.org>, Zefan Li <lizefan@...wei.com>
Subject: [PATCH 3.4 025/146] ASoC: cs4271: Increase delay time after reset

From: Pascal Huerst <pascal.huerst@...il.com>

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

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


commit 74ff960222d90999508b4ba0d3449f796695b6d5 upstream.

The delay time after a reset in the codec probe callback was too short,
and did not work on certain hw because the codec needs more time to
power on. This increases the delay time from 1us to 1ms.

Signed-off-by: Pascal Huerst <pascal.huerst@...il.com>
Acked-by: Brian Austin <brian.austin@...rus.com>
Signed-off-by: Mark Brown <broonie@...nel.org>
[lizf: Backported to 3.4: adjust context]
Signed-off-by: Zefan Li <lizefan@...wei.com>
---
 sound/soc/codecs/cs4271.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/sound/soc/codecs/cs4271.c b/sound/soc/codecs/cs4271.c
index f9e2bda..5405932 100644
--- a/sound/soc/codecs/cs4271.c
+++ b/sound/soc/codecs/cs4271.c
@@ -475,10 +475,10 @@ static int cs4271_probe(struct snd_soc_codec *codec)
 	if (gpio_nreset >= 0) {
 		/* Reset codec */
 		gpio_direction_output(gpio_nreset, 0);
-		udelay(1);
+		mdelay(1);
 		gpio_set_value(gpio_nreset, 1);
 		/* Give the codec time to wake up */
-		udelay(1);
+		mdelay(1);
 	}
 
 	cs4271->gpio_nreset = gpio_nreset;
-- 
1.9.1

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