From patchwork Thu Jun 4 13:04:14 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peter Ujfalusi X-Patchwork-Id: 6546921 Return-Path: X-Original-To: patchwork-alsa-devel@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 0674C9F3D1 for ; Thu, 4 Jun 2015 13:06:08 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 46E9D207FD for ; Thu, 4 Jun 2015 13:06:06 +0000 (UTC) Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) by mail.kernel.org (Postfix) with ESMTP id 54E51207E4 for ; Thu, 4 Jun 2015 13:06:05 +0000 (UTC) Received: by alsa0.perex.cz (Postfix, from userid 1000) id 80B982665F6; Thu, 4 Jun 2015 15:06:04 +0200 (CEST) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Spam-Level: X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,NO_DNS_FOR_FROM, UNPARSEABLE_RELAY autolearn=no version=3.3.1 Received: from alsa0.perex.cz (localhost [IPv6:::1]) by alsa0.perex.cz (Postfix) with ESMTP id CC0FB2664C2; Thu, 4 Jun 2015 15:04:52 +0200 (CEST) X-Original-To: alsa-devel@alsa-project.org Delivered-To: alsa-devel@alsa-project.org Received: by alsa0.perex.cz (Postfix, from userid 1000) id 76E9C26649A; Thu, 4 Jun 2015 15:04:51 +0200 (CEST) Received: from arroyo.ext.ti.com (arroyo.ext.ti.com [192.94.94.40]) by alsa0.perex.cz (Postfix) with ESMTP id 411D526069C for ; Thu, 4 Jun 2015 15:04:45 +0200 (CEST) Received: from dflxv15.itg.ti.com ([128.247.5.124]) by arroyo.ext.ti.com (8.13.7/8.13.7) with ESMTP id t54D4hnQ004619; Thu, 4 Jun 2015 08:04:43 -0500 Received: from DLEE71.ent.ti.com (dlee71.ent.ti.com [157.170.170.114]) by dflxv15.itg.ti.com (8.14.3/8.13.8) with ESMTP id t54D4hkm019928; Thu, 4 Jun 2015 08:04:43 -0500 Received: from dflp33.itg.ti.com (10.64.6.16) by DLEE71.ent.ti.com (157.170.170.114) with Microsoft SMTP Server id 14.3.224.2; Thu, 4 Jun 2015 08:04:42 -0500 Received: from dlep33.itg.ti.com (ileax41-snat.itg.ti.com [10.172.224.153]) by dflp33.itg.ti.com (8.14.3/8.13.8) with ESMTP id t54D4aQ1020795; Thu, 4 Jun 2015 08:04:41 -0500 From: Peter Ujfalusi To: Mark Brown , Liam Girdwood , Date: Thu, 4 Jun 2015 16:04:14 +0300 Message-ID: <1433423075-14142-3-git-send-email-peter.ujfalusi@ti.com> X-Mailer: git-send-email 2.4.2 In-Reply-To: <1433423075-14142-1-git-send-email-peter.ujfalusi@ti.com> References: <1433423075-14142-1-git-send-email-peter.ujfalusi@ti.com> MIME-Version: 1.0 Cc: alsa-devel@alsa-project.org Subject: [alsa-devel] [PATCH v2 02/23] ASoC: tas2552: Fix kernel crash when the codec is loaded but not part of a card X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: alsa-devel-bounces@alsa-project.org X-Virus-Scanned: ClamAV using ClamSMTP If the card is not part of any card the tas_data->codec is NULL since it is set only during snd_soc_codec_driver.probe, which is not yet called. Signed-off-by: Peter Ujfalusi --- sound/soc/codecs/tas2552.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/sound/soc/codecs/tas2552.c b/sound/soc/codecs/tas2552.c index ff82f46ba504..df89947f1032 100644 --- a/sound/soc/codecs/tas2552.c +++ b/sound/soc/codecs/tas2552.c @@ -120,6 +120,9 @@ static void tas2552_sw_shutdown(struct tas2552_data *tas_data, int sw_shutdown) { u8 cfg1_reg; + if (!tas_data->codec) + return; + if (sw_shutdown) cfg1_reg = 0; else