[02/74] ASoC: imx-ssi: Fix occasional AC97 reset failure
From: Ben Hutchings
Date: Sun Apr 07 2013 - 19:33:29 EST
3.2.43-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Sascha Hauer <s.hauer@xxxxxxxxxxxxxx>
commit b6e51600f4e983e757b1b6942becaa1ae7d82e67 upstream.
Signed-off-by: Sascha Hauer <s.hauer@xxxxxxxxxxxxxx>
Signed-off-by: Markus Pargmann <mpa@xxxxxxxxxxxxxx>
Signed-off-by: Mark Brown <broonie@xxxxxxxxxxxxxxxxxxxxxxxxxxx>
[bwh: Backported to 3.2: adjust filename]
Signed-off-by: Ben Hutchings <ben@xxxxxxxxxxxxxxx>
---
sound/soc/imx/imx-ssi.c | 5 +++++
1 file changed, 5 insertions(+)
--- a/sound/soc/imx/imx-ssi.c
+++ b/sound/soc/imx/imx-ssi.c
@@ -573,6 +573,8 @@ static void imx_ssi_ac97_reset(struct sn
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)
@@ -581,6 +583,9 @@ static void imx_ssi_ac97_warm_reset(stru
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 = {
--
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