From patchwork Fri Jan 14 06:57:13 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jiasheng Jiang X-Patchwork-Id: 12713429 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 50227C433EF for ; Fri, 14 Jan 2022 06:58:24 +0000 (UTC) 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 73F331F65; Fri, 14 Jan 2022 07:57:32 +0100 (CET) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz 73F331F65 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1642143502; bh=8UgpOmVk3ouN/YFam/ij+7xSH8upiBKSc9RIzUwnbYI=; h=From:To:Subject:Date:Cc:List-Id:List-Unsubscribe:List-Archive: List-Post:List-Help:List-Subscribe:From; b=fwF2jtqkwsxGbLAMz3TpomjAxPFwdkoFT4YG0D0lN5ZlRvDTMPlZmjZIzTzAZ5QcJ NJqsGC63cFJiKUiEUBJOYSqOgqLj6x/FWSfiF7+kMjjTzTOxA4SkWhd2kj2UJSMNg9 QVS5X6uo0qVZFCutsmY1WT87fyKCfKTxJr7NQ44I= Received: from alsa1.perex.cz (localhost.localdomain [127.0.0.1]) by alsa1.perex.cz (Postfix) with ESMTP id 04BC2F8030F; Fri, 14 Jan 2022 07:57:32 +0100 (CET) Received: by alsa1.perex.cz (Postfix, from userid 50401) id E395FF80310; Fri, 14 Jan 2022 07:57:29 +0100 (CET) Received: from cstnet.cn (smtp23.cstnet.cn [159.226.251.23]) by alsa1.perex.cz (Postfix) with ESMTP id 944A8F80054 for ; Fri, 14 Jan 2022 07:57:18 +0100 (CET) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz 944A8F80054 Received: from localhost.localdomain (unknown [124.16.138.126]) by APP-03 (Coremail) with SMTP id rQCowADX3FjKHuFh69iFBQ--.22556S2; Fri, 14 Jan 2022 14:57:14 +0800 (CST) From: Jiasheng Jiang To: broonie@kernel.org Subject: [PATCH v2] ASoC: codecs: Check for error pointer after calling devm_regmap_init_mmio Date: Fri, 14 Jan 2022 14:57:13 +0800 Message-Id: <20220114065713.1246619-1-jiasheng@iscas.ac.cn> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 X-CM-TRANSID: rQCowADX3FjKHuFh69iFBQ--.22556S2 X-Coremail-Antispam: 1UD129KBjvJXoW7Cr43GFW5KFy8urWDJF15twb_yoW8KF43pa n5KFWkGasxGrW3Aryftw18JF1xt34293WrXw48G3s09r1DXF1Uury5CF4UXFZ5trWv9FZx GrWSk3y8C345ZFUanT9S1TB71UUUUUUqnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnRJUUU9j14x267AKxVW8JVW5JwAFc2x0x2IEx4CE42xK8VAvwI8IcIk0 rVWrJVCq3wAFIxvE14AKwVWUJVWUGwA2ocxC64kIII0Yj41l84x0c7CEw4AK67xGY2AK02 1l84ACjcxK6xIIjxv20xvE14v26r4j6ryUM28EF7xvwVC0I7IYx2IY6xkF7I0E14v26r4j 6F4UM28EF7xvwVC2z280aVAFwI0_Cr1j6rxdM28EF7xvwVC2z280aVCY1x0267AKxVWxJr 0_GcWle2I262IYc4CY6c8Ij28IcVAaY2xG8wAqx4xG64xvF2IEw4CE5I8CrVC2j2WlYx0E 2Ix0cI8IcVAFwI0_Jr0_Jr4lYx0Ex4A2jsIE14v26r1j6r4UMcvjeVCFs4IE7xkEbVWUJV W8JwACjcxG0xvY0x0EwIxGrwACjI8F5VA0II8E6IAqYI8I648v4I1lFIxGxcIEc7CjxVA2 Y2ka0xkIwI1lc2xSY4AK67AK6r47MxAIw28IcxkI7VAKI48JMxC20s026xCaFVCjc4AY6r 1j6r4UMI8I3I0E5I8CrVAFwI0_Jr0_Jr4lx2IqxVCjr7xvwVAFwI0_JrI_JrWlx4CE17CE b7AF67AKxVWUtVW8ZwCIc40Y0x0EwIxGrwCI42IY6xIIjxv20xvE14v26r1j6r1xMIIF0x vE2Ix0cI8IcVCY1x0267AKxVWUJVW8JwCI42IY6xAIw20EY4v20xvaj40_Wr1j6rW3Jr1l IxAIcVC2z280aVAFwI0_Jr0_Gr1lIxAIcVC2z280aVCY1x0267AKxVW8JVW8JrUvcSsGvf C2KfnxnUUI43ZEXa7VUjHUDJUUUUU== X-Originating-IP: [124.16.138.126] X-CM-SenderInfo: pmld2xxhqjqxpvfd2hldfou0/ Cc: cezary.rojewski@intel.com, bgoswami@codeaurora.org, alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org, Jiasheng Jiang , tiwai@suse.com, lgirdwood@gmail.com, srinivas.kandagatla@linaro.org 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" Since the possible failure of the devm_regmap_init_mmio(), it will return error pointer and be assigned to the regmap. Then the error pointer will be dereferenced. For example rx->regmap will be used in rx_macro_mclk_enable(). Therefore, it should be better to check it. Fixes: af3d54b99764 ("ASoC: codecs: lpass-rx-macro: add support for lpass rx macro") Fixes: c39667ddcfc5 ("ASoC: codecs: lpass-tx-macro: add support for lpass tx macro") Fixes: 809bcbcecebf ("ASoC: codecs: lpass-wsa-macro: Add support to WSA Macro") Signed-off-by: Jiasheng Jiang --- Changelog v1 -> v2 * Change 1. Refine the commit message. --- sound/soc/codecs/lpass-rx-macro.c | 2 ++ sound/soc/codecs/lpass-tx-macro.c | 2 ++ sound/soc/codecs/lpass-wsa-macro.c | 2 ++ 3 files changed, 6 insertions(+) diff --git a/sound/soc/codecs/lpass-rx-macro.c b/sound/soc/codecs/lpass-rx-macro.c index 07894ec5e7a6..2adbf2e2697f 100644 --- a/sound/soc/codecs/lpass-rx-macro.c +++ b/sound/soc/codecs/lpass-rx-macro.c @@ -3542,6 +3542,8 @@ static int rx_macro_probe(struct platform_device *pdev) return PTR_ERR(base); rx->regmap = devm_regmap_init_mmio(dev, base, &rx_regmap_config); + if (IS_ERR(rx->regmap)) + return PTR_ERR(rx->regmap); dev_set_drvdata(dev, rx); diff --git a/sound/soc/codecs/lpass-tx-macro.c b/sound/soc/codecs/lpass-tx-macro.c index 27a0d5defd27..e4bbc6bd4925 100644 --- a/sound/soc/codecs/lpass-tx-macro.c +++ b/sound/soc/codecs/lpass-tx-macro.c @@ -1803,6 +1803,8 @@ static int tx_macro_probe(struct platform_device *pdev) return PTR_ERR(base); tx->regmap = devm_regmap_init_mmio(dev, base, &tx_regmap_config); + if (IS_ERR(tx->regmap)) + return PTR_ERR(tx->regmap); dev_set_drvdata(dev, tx); diff --git a/sound/soc/codecs/lpass-wsa-macro.c b/sound/soc/codecs/lpass-wsa-macro.c index d3ac318fd6b6..dd1a8b7bc794 100644 --- a/sound/soc/codecs/lpass-wsa-macro.c +++ b/sound/soc/codecs/lpass-wsa-macro.c @@ -2405,6 +2405,8 @@ static int wsa_macro_probe(struct platform_device *pdev) return PTR_ERR(base); wsa->regmap = devm_regmap_init_mmio(dev, base, &wsa_regmap_config); + if (IS_ERR(wsa->regmap)) + return PTR_ERR(wsa->regmap); dev_set_drvdata(dev, wsa);