From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934967Ab3DGXd0 (ORCPT ); Sun, 7 Apr 2013 19:33:26 -0400 Received: from shadbolt.e.decadent.org.uk ([88.96.1.126]:46841 "EHLO shadbolt.e.decadent.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934761Ab3DGXdX (ORCPT ); Sun, 7 Apr 2013 19:33:23 -0400 Content-Type: text/plain; charset="UTF-8" Content-Disposition: inline Content-Transfer-Encoding: 8bit MIME-Version: 1.0 From: Ben Hutchings To: linux-kernel@vger.kernel.org, stable@vger.kernel.org CC: akpm@linux-foundation.org, "Mark Brown" , "Sascha Hauer" , "Markus Pargmann" Date: Sun, 07 Apr 2013 23:45:42 +0100 Message-ID: X-Mailer: LinuxStableQueue (scripts by bwh) Subject: [02/74] ASoC: imx-ssi: Fix occasional AC97 reset failure In-Reply-To: X-SA-Exim-Connect-IP: 2001:470:1f08:1539:b4b3:7e2a:e2d0:3478 X-SA-Exim-Mail-From: ben@decadent.org.uk X-SA-Exim-Scanned: No (on shadbolt.decadent.org.uk); SAEximRunCond expanded to false Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 3.2.43-rc1 review patch. If anyone has any objections, please let me know. ------------------ From: Sascha Hauer commit b6e51600f4e983e757b1b6942becaa1ae7d82e67 upstream. Signed-off-by: Sascha Hauer Signed-off-by: Markus Pargmann Signed-off-by: Mark Brown [bwh: Backported to 3.2: adjust filename] Signed-off-by: Ben Hutchings --- 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 = {