From patchwork Thu Sep 3 20:47:36 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bard Liao X-Patchwork-Id: 11756315 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id D895F109A for ; Fri, 4 Sep 2020 08:44:49 +0000 (UTC) Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 6BE47206B7 for ; Fri, 4 Sep 2020 08:44:49 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=alsa-project.org header.i=@alsa-project.org header.b="YiPpGNTt" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 6BE47206B7 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.intel.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=alsa-devel-bounces@alsa-project.org Received: from alsa1.perex.cz (alsa1.perex.cz [207.180.221.201]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by alsa0.perex.cz (Postfix) with ESMTPS id C70BF1AE4; Fri, 4 Sep 2020 10:44:03 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz C70BF1AE4 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1599209087; bh=xqMXycONFiAk5hnUDIsqYbVoH2KYF5FMAuxTg1bvMec=; h=From:To:Subject:Date:In-Reply-To:References:Cc:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe: From; b=YiPpGNTtJj84gROl0OZp7MvjMLGaxXG9EpXYv74U+Mgvo3NZz0wX5ZD3r5HGCG7+C CvcBokGL/f66CcIZiygAhEmGSraa+ijXyK22sO+Ka6h7wnuuet3gRnSgC4HfvuB+IS 5iyaej3aeg3od+AobJ22NrRxIfnCIyeol5p/qcLk= Received: from alsa1.perex.cz (localhost.localdomain [127.0.0.1]) by alsa1.perex.cz (Postfix) with ESMTP id 68AF0F802DF; Fri, 4 Sep 2020 10:41:36 +0200 (CEST) X-Original-To: alsa-devel@alsa-project.org Delivered-To: alsa-devel@alsa-project.org Received: by alsa1.perex.cz (Postfix, from userid 50401) id 5F08CF802E9; Fri, 4 Sep 2020 10:41:35 +0200 (CEST) X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on alsa1.perex.cz X-Spam-Level: * X-Spam-Status: No, score=1.1 required=5.0 tests=DATE_IN_PAST_06_12, RCVD_IN_MSPIKE_H3,RCVD_IN_MSPIKE_WL,SPF_HELO_NONE,SPF_NONE,URIBL_BLOCKED autolearn=disabled version=3.4.0 Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by alsa1.perex.cz (Postfix) with ESMTPS id DC8D8F802DF for ; Fri, 4 Sep 2020 10:41:27 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz DC8D8F802DF IronPort-SDR: LyJmIWrq6dXidmznbKSQZK8qg1ZppZJdee1hAqMcZhS1OhvQa5iOn3R/zwcbABKMu/tiy8qmaC DU8kYHI6l7Nw== X-IronPort-AV: E=McAfee;i="6000,8403,9733"; a="175765415" X-IronPort-AV: E=Sophos;i="5.76,389,1592895600"; d="scan'208";a="175765415" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by fmsmga101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 04 Sep 2020 01:41:26 -0700 IronPort-SDR: t4DIOjvA31ryQ+jX+pK3pIo9PXu3FLQ1Gfbq37AoSaLMQRS67KS3dg0+8LOJ4RkKoej2onhkGE MYpm+Cdom2Lg== X-IronPort-AV: E=Sophos;i="5.76,389,1592895600"; d="scan'208";a="284358890" Received: from bard-ubuntu.sh.intel.com ([10.239.13.33]) by fmsmga008-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 04 Sep 2020 01:41:23 -0700 From: Bard Liao To: alsa-devel@alsa-project.org, vkoul@kernel.org Subject: [PATCH v2 1/4] soundwire: stream: fix NULL/IS_ERR confusion Date: Fri, 4 Sep 2020 04:47:36 +0800 Message-Id: <20200903204739.31206-2-yung-chuan.liao@linux.intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200903204739.31206-1-yung-chuan.liao@linux.intel.com> References: <20200903204739.31206-1-yung-chuan.liao@linux.intel.com> Cc: pierre-louis.bossart@linux.intel.com, vinod.koul@linaro.org, tiwai@suse.de, gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org, ranjani.sridharan@linux.intel.com, hui.wang@canonical.com, broonie@kernel.org, srinivas.kandagatla@linaro.org, jank@cadence.com, mengdong.lin@intel.com, sanyog.r.kale@intel.com, rander.wang@linux.intel.com, bard.liao@intel.com X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.15 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" From: Pierre-Louis Bossart snd_soc_dai_get_sdw_stream() can only return -ENOTSUPP or the stream, NULL is not a possible value. Fixes: 4550569bd779f ('soundwire: stream: add helper to startup/shutdown streams') Reported-by: Bard Liao Signed-off-by: Pierre-Louis Bossart Reviewed-by: Rander Wang Signed-off-by: Bard Liao --- drivers/soundwire/stream.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/soundwire/stream.c b/drivers/soundwire/stream.c index e4cf484f5905..12a4a4bba85a 100644 --- a/drivers/soundwire/stream.c +++ b/drivers/soundwire/stream.c @@ -1914,7 +1914,7 @@ void sdw_shutdown_stream(void *sdw_substream) sdw_stream = snd_soc_dai_get_sdw_stream(dai, substream->stream); - if (!sdw_stream) { + if (IS_ERR(sdw_stream)) { dev_err(rtd->dev, "no stream found for DAI %s", dai->name); return; }