From patchwork Mon Mar 27 15:54:27 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Charles Keepax X-Patchwork-Id: 9647071 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id D13E7602C8 for ; Mon, 27 Mar 2017 15:53:32 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id C17D0283BA for ; Mon, 27 Mar 2017 15:53:32 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id B5AED28405; Mon, 27 Mar 2017 15:53:32 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.9 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_NONE autolearn=ham version=3.3.1 Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 7E7D1283BA for ; Mon, 27 Mar 2017 15:53:30 +0000 (UTC) Received: from alsa0.perex.cz (localhost [127.0.0.1]) by alsa0.perex.cz (Postfix) with ESMTP id C6BF8266B50; Mon, 27 Mar 2017 17:53:28 +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 5B5D6266D8A; Mon, 27 Mar 2017 17:53:27 +0200 (CEST) Received: from mx0b-001ae601.pphosted.com (mx0b-001ae601.pphosted.com [67.231.152.168]) by alsa0.perex.cz (Postfix) with ESMTP id 0D42E26583C for ; Mon, 27 Mar 2017 17:53:24 +0200 (CEST) Received: from pps.filterd (m0077474.ppops.net [127.0.0.1]) by mx0b-001ae601.pphosted.com (8.16.0.20/8.16.0.20) with SMTP id v2RFnER5026612; Mon, 27 Mar 2017 10:53:22 -0500 Authentication-Results: ppops.net; spf=none smtp.mailfrom=ckeepax@opensource.wolfsonmicro.com Received: from mail3.cirrus.com ([87.246.76.56]) by mx0b-001ae601.pphosted.com with ESMTP id 29dmyhtvdc-1; Mon, 27 Mar 2017 10:53:22 -0500 Received: from EX17.ad.cirrus.com (ex17.ad.cirrus.com [172.20.9.81]) by mail3.cirrus.com (Postfix) with ESMTP id E673B611CE7E; Mon, 27 Mar 2017 10:54:56 -0500 (CDT) Received: from imbe.wolfsonmicro.main (198.61.95.81) by EX17.ad.cirrus.com (172.20.9.81) with Microsoft SMTP Server id 14.3.301.0; Mon, 27 Mar 2017 16:53:21 +0100 Received: from algalon.ad.cirrus.com (algalon.ad.cirrus.com [198.90.223.36]) by imbe.wolfsonmicro.main (8.14.4/8.14.4) with ESMTP id v2RFqlV9020937; Mon, 27 Mar 2017 16:52:47 +0100 From: Charles Keepax To: Date: Mon, 27 Mar 2017 16:54:27 +0100 Message-ID: <1490630067-23455-1-git-send-email-ckeepax@opensource.wolfsonmicro.com> X-Mailer: git-send-email 2.1.4 MIME-Version: 1.0 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 priorityscore=1501 malwarescore=0 suspectscore=1 phishscore=0 bulkscore=0 spamscore=0 clxscore=1011 lowpriorityscore=0 impostorscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1702020001 definitions=main-1703270134 Cc: brian.austin@cirrus.com, alsa-devel@alsa-project.org, lgirdwood@gmail.com, Paul.Handrigan@cirrus.com, patches@opensource.wolfsonmicro.com Subject: [alsa-devel] [PATCH] ASoC: cs35l35: Clear reset_gpio on the error path in probe 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 The error path in probe attempts to put the device back into reset. Should we fail to get the reset_gpio (such as a probe defer) we will leave the error value in there, which the gpiod_set_value_cansleep on the error path will attempt to deference. Fix this issue by clearing reset_gpio before we head into the error path. Signed-off-by: Charles Keepax Acked-by: Brian Austin --- sound/soc/codecs/cs35l35.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/sound/soc/codecs/cs35l35.c b/sound/soc/codecs/cs35l35.c index 1d9f332..9688274 100644 --- a/sound/soc/codecs/cs35l35.c +++ b/sound/soc/codecs/cs35l35.c @@ -1412,10 +1412,10 @@ static int cs35l35_i2c_probe(struct i2c_client *i2c_client, GPIOD_OUT_LOW); if (IS_ERR(cs35l35->reset_gpio)) { ret = PTR_ERR(cs35l35->reset_gpio); + cs35l35->reset_gpio = NULL; if (ret == -EBUSY) { dev_info(dev, "Reset line busy, assuming shared reset\n"); - cs35l35->reset_gpio = NULL; } else { dev_err(dev, "Failed to get reset GPIO: %d\n", ret); goto err;