[001/126] ASoC: imx-ssi: Fix occasional AC97 reset failure

From: Steven Rostedt
Date: Tue May 07 2013 - 00:11:38 EST


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

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

From: Sascha Hauer <s.hauer@xxxxxxxxxxxxxx>

[ Upstream commit b6e51600f4e983e757b1b6942becaa1ae7d82e67 ]

Signed-off-by: Sascha Hauer <s.hauer@xxxxxxxxxxxxxx>
Signed-off-by: Markus Pargmann <mpa@xxxxxxxxxxxxxx>
Signed-off-by: Mark Brown <broonie@xxxxxxxxxxxxxxxxxxxxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Steven Rostedt <rostedt@xxxxxxxxxxx>
---
sound/soc/fsl/imx-ssi.c | 5 +++++
1 file changed, 5 insertions(+)

diff --git a/sound/soc/fsl/imx-ssi.c b/sound/soc/fsl/imx-ssi.c
index 81d7728..5b8140b 100644
--- a/sound/soc/fsl/imx-ssi.c
+++ b/sound/soc/fsl/imx-ssi.c
@@ -498,6 +498,8 @@ static void imx_ssi_ac97_reset(struct snd_ac97 *ac97)

if (imx_ssi->ac97_reset)
imx_ssi->ac97_reset(ac97);
+ /* First read sometimes fails, do a dummy read */
+ imx_ssi_ac97_read(ac97, 0);
}

static void imx_ssi_ac97_warm_reset(struct snd_ac97 *ac97)
@@ -506,6 +508,9 @@ static void imx_ssi_ac97_warm_reset(struct snd_ac97 *ac97)

if (imx_ssi->ac97_warm_reset)
imx_ssi->ac97_warm_reset(ac97);
+
+ /* First read sometimes fails, do a dummy read */
+ imx_ssi_ac97_read(ac97, 0);
}

struct snd_ac97_bus_ops soc_ac97_ops = {
--
1.7.10.4


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