From patchwork Sun Mar 10 18:33:03 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Markus Pargmann X-Patchwork-Id: 2245481 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork2.kernel.org Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) by patchwork2.kernel.org (Postfix) with ESMTP id 3E514DF24C for ; Sun, 10 Mar 2013 18:40:39 +0000 (UTC) Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1UEl7G-0005b9-Nu; Sun, 10 Mar 2013 18:37:04 +0000 Received: from metis.ext.pengutronix.de ([2001:6f8:1178:4:290:27ff:fe1d:cc33]) by merlin.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1UEl5T-0004tm-7p for linux-arm-kernel@lists.infradead.org; Sun, 10 Mar 2013 18:35:12 +0000 Received: from dude.hi.pengutronix.de ([2001:6f8:1178:2:21e:67ff:fe11:9c5c]) by metis.ext.pengutronix.de with esmtp (Exim 4.72) (envelope-from ) id 1UEl50-0005Fy-4X; Sun, 10 Mar 2013 19:34:42 +0100 Received: from mpa by dude.hi.pengutronix.de with local (Exim 4.80) (envelope-from ) id 1UEl4v-0002uJ-PK; Sun, 10 Mar 2013 19:34:37 +0100 From: Markus Pargmann To: linux-arm-kernel@lists.infradead.org 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> X-Mailer: git-send-email 1.8.2.rc2 In-Reply-To: <1362940391-8338-1-git-send-email-mpa@pengutronix.de> References: <1362940391-8338-1-git-send-email-mpa@pengutronix.de> X-SA-Exim-Connect-IP: 2001:6f8:1178:2:21e:67ff:fe11:9c5c X-SA-Exim-Mail-From: mpa@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-arm-kernel@lists.infradead.org X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20130310_143511_550006_1A2D1DD5 X-CRM114-Status: GOOD ( 12.70 ) X-Spam-Score: -4.3 (----) X-Spam-Report: SpamAssassin version 3.3.2 on merlin.infradead.org summary: Content analysis details: (-4.3 points) pts rule name description ---- ---------------------- -------------------------------------------------- -2.4 RP_MATCHES_RCVD Envelope sender domain matches handover relay domain -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] Cc: Fabio Estevam , alsa-devel@alsa-project.org, Sascha Hauer , devicetree-discuss@lists.ozlabs.org, Mark Brown , Liam Girdwood , Grant Likely , Sascha Hauer , Markus Pargmann , Shawn Guo , Timur Tabi X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.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 = {