From mboxrd@z Thu Jan 1 00:00:00 1970 From: Markus Pargmann Subject: [PATCH 02/10] imx-ssi: Fix occasional AC97 reset failure Date: Sun, 10 Mar 2013 19:33:03 +0100 Message-ID: <1362940391-8338-3-git-send-email-mpa@pengutronix.de> References: <1362940391-8338-1-git-send-email-mpa@pengutronix.de> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1362940391-8338-1-git-send-email-mpa-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: devicetree-discuss-bounces+gldd-devicetree-discuss=m.gmane.org-uLR06cmDAlY/bJ5BZ2RsiQ@public.gmane.org Sender: "devicetree-discuss" To: linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org Cc: Fabio Estevam , alsa-devel-K7yf7f+aM1XWsZ/bQMPhNw@public.gmane.org, Sascha Hauer , devicetree-discuss-uLR06cmDAlY/bJ5BZ2RsiQ@public.gmane.org, Mark Brown , Liam Girdwood , Sascha Hauer , Timur Tabi List-Id: devicetree@vger.kernel.org From: Sascha Hauer Signed-off-by: Sascha Hauer Signed-off-by: Markus Pargmann --- 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 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 = { -- 1.8.1.5