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[02/10] imx-ssi: Fix occasional AC97 reset failure

Message ID 1362940391-8338-3-git-send-email-mpa@pengutronix.de (mailing list archive)
State New, archived
Headers show

Commit Message

Markus Pargmann March 10, 2013, 6:33 p.m. UTC 
From: Sascha Hauer <s.hauer@pengutronix.de>

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
---
 sound/soc/fsl/imx-ssi.c | 5 +++++
 1 file changed, 5 insertions(+)

Comments

Mark Brown March 12, 2013, 6:53 p.m. UTC | #1 
On Sun, Mar 10, 2013 at 07:33:03PM +0100, Markus Pargmann wrote:
> From: Sascha Hauer <s.hauer@pengutronix.de>
> 
> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
> Signed-off-by: Markus Pargmann <mpa@pengutronix.de>

Applied but *always* use subject lines appropriate to the subsystem and
bugfixes like this should be pulled to the front of the series as they
should be sent to mainline earlier.
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Patch

diff --git a/sound/soc/fsl/imx-ssi.c b/sound/soc/fsl/imx-ssi.c
index 7ee0147..0e3fc8d 100644
--- a/sound/soc/fsl/imx-ssi.c
+++ b/sound/soc/fsl/imx-ssi.c
@@ -496,6 +496,8 @@  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)
@@ -504,6 +506,9 @@  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 = {