From patchwork Thu Jun 4 12:22:26 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peter Ujfalusi X-Patchwork-Id: 6546221 Return-Path: X-Original-To: patchwork-alsa-devel@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 7350BC0020 for ; Thu, 4 Jun 2015 12:25:23 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id A6CC9207B6 for ; Thu, 4 Jun 2015 12:25:22 +0000 (UTC) Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) by mail.kernel.org (Postfix) with ESMTP id AB63A20748 for ; Thu, 4 Jun 2015 12:25:21 +0000 (UTC) Received: by alsa0.perex.cz (Postfix, from userid 1000) id 934FD2665B2; Thu, 4 Jun 2015 14:25:20 +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, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 Received: from alsa0.perex.cz (localhost [IPv6:::1]) by alsa0.perex.cz (Postfix) with ESMTP id 5E74A2664B0; Thu, 4 Jun 2015 14:23:16 +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 0F1B72664A1; Thu, 4 Jun 2015 14:23:14 +0200 (CEST) Received: from comal.ext.ti.com (comal.ext.ti.com [198.47.26.152]) by alsa0.perex.cz (Postfix) with ESMTP id E6D242661DE for ; Thu, 4 Jun 2015 14:23:04 +0200 (CEST) Received: from dflxv15.itg.ti.com ([128.247.5.124]) by comal.ext.ti.com (8.13.7/8.13.7) with ESMTP id t54CN1qv024694; Thu, 4 Jun 2015 07:23:01 -0500 Received: from DFLE73.ent.ti.com (dfle73.ent.ti.com [128.247.5.110]) by dflxv15.itg.ti.com (8.14.3/8.13.8) with ESMTP id t54CN1Dr015254; Thu, 4 Jun 2015 07:23:01 -0500 Received: from dflp32.itg.ti.com (10.64.6.15) by DFLE73.ent.ti.com (128.247.5.110) with Microsoft SMTP Server id 14.3.224.2; Thu, 4 Jun 2015 07:23:00 -0500 Received: from dlep32.itg.ti.com (ileax41-snat.itg.ti.com [10.172.224.153]) by dflp32.itg.ti.com (8.14.3/8.13.8) with ESMTP id t54CMqXT028164; Thu, 4 Jun 2015 07:22:59 -0500 From: Peter Ujfalusi To: Mark Brown , Liam Girdwood , Date: Thu, 4 Jun 2015 15:22:26 +0300 Message-ID: <1433420571-5421-3-git-send-email-peter.ujfalusi@ti.com> X-Mailer: git-send-email 2.4.2 In-Reply-To: <1433420571-5421-1-git-send-email-peter.ujfalusi@ti.com> References: <1433420571-5421-1-git-send-email-peter.ujfalusi@ti.com> MIME-Version: 1.0 Cc: alsa-devel@alsa-project.org Subject: [alsa-devel] [PATCH 02/22] 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