[PATCH 01/72] ASoC: imx-ssi: Fix occasional AC97 reset failure
Luis Henriques
luis.henriques at canonical.com
Thu Apr 18 09:15:46 UTC 2013
3.5.7.11 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Sascha Hauer <s.hauer at pengutronix.de>
commit b6e51600f4e983e757b1b6942becaa1ae7d82e67 upstream.
Signed-off-by: Sascha Hauer <s.hauer at pengutronix.de>
Signed-off-by: Markus Pargmann <mpa at pengutronix.de>
Signed-off-by: Mark Brown <broonie at opensource.wolfsonmicro.com>
Signed-off-by: Luis Henriques <luis.henriques at canonical.com>
---
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 28dd76c..83300fb 100644
--- a/sound/soc/fsl/imx-ssi.c
+++ b/sound/soc/fsl/imx-ssi.c
@@ -497,6 +497,8 @@ 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)
@@ -505,6 +507,9 @@ 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 = {
--
1.8.1.2
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