linux-kernel - [219/264] ASoC: Leave input audio data bit length settings untouched in wm8711_set_dai

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Date:	Wed, 09 Nov 2011 13:34:26 -0800
From:	Greg KH <gregkh@...e.de>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:	torvalds@...ux-foundation.org, akpm@...ux-foundation.org,
	alan@...rguk.ukuu.org.uk, Axel Lin <axel.lin@...il.com>,
	Mark Brown <broonie@...nsource.wolfsonmicro.com>
Subject: [219/264] ASoC: Leave input audio data bit length settings untouched in wm8711_set_dai_fmt

3.1-stable review patch.  If anyone has any objections, please let me know.

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

From: Axel Lin <axel.lin@...il.com>

commit d558cfc30064a97c2c65dbd2b3a4f5a1dea7ec1b upstream.

Current implementation in wm8711_set_dai_fmt always clear BIT[3:2]
(the Input Audio Data Bit Length Select) of WM8711_IFACE(07h) register.
Input Audio Data Bit Length Select bits are set by wm8711_hw_params,
we should leave BIT[3:2] untouched in wm8711_set_dai_fmt.

Signed-off-by: Axel Lin <axel.lin@...il.com>
Signed-off-by: Mark Brown <broonie@...nsource.wolfsonmicro.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>

---
 sound/soc/codecs/wm8711.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/sound/soc/codecs/wm8711.c
+++ b/sound/soc/codecs/wm8711.c
@@ -231,7 +231,7 @@ static int wm8711_set_dai_fmt(struct snd
 		unsigned int fmt)
 {
 	struct snd_soc_codec *codec = codec_dai->codec;
-	u16 iface = 0;
+	u16 iface = snd_soc_read(codec, WM8711_IFACE) & 0x000c;
 
 	/* set master/slave audio interface */
 	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {


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