From nobody Mon Feb 9 01:11:36 2026 Received: from cstnet.cn (smtp84.cstnet.cn [159.226.251.84]) (using TLSv1.2 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id ED9B01373; Wed, 28 Jan 2026 04:23:55 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=159.226.251.84 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769574238; cv=none; b=gWdH1KG1FHUcnifa/c4KnrecrIZ1DIAc17sVOhZJWEe1qKG5miJavSln1rdf12YPC6dIG2VCQ9rBZy5U0fArQvLZaAusooTqMOh7f5/GlBLJdzBAHmABshRZ5rd0ztL9hwQHJQczC/agAslnB7n8eduUATt66HDpZHz+2CHsjUw= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769574238; c=relaxed/simple; bh=n1vU0ZJFukt5Avx0Nba3UyhHiQM18IOkB4aZgUPA/ZU=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=MYbTMlcQlSPsp/y0kUnmuNQih1Du+velvv4yNMwL5UmKVfApoPgKshjyMds5HUxAU1zZJf4SE79z4dU1w8Es/5QhAO7wmuOJKsAZEuudUXMfLv03b0uSX3wbjAr5iEe3SFpB8/PZk5Ru7NMhFwutHe3QK1+BK6QtCLmvRXPiTDU= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=iscas.ac.cn; spf=pass smtp.mailfrom=iscas.ac.cn; arc=none smtp.client-ip=159.226.251.84 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=iscas.ac.cn Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=iscas.ac.cn Received: from localhost (unknown [124.16.138.129]) by APP-05 (Coremail) with SMTP id zQCowAA3zRBTj3lpE7rYBg--.31474S2; Wed, 28 Jan 2026 12:23:47 +0800 (CST) From: Chen Ni To: amelie.delaunay@foss.st.com, vkoul@kernel.org, mcoquelin.stm32@gmail.com, alexandre.torgue@foss.st.com Cc: dmaengine@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Chen Ni Subject: [PATCH] dmaengine: stm32-mdma: Add missing check for device_property_read_u32_array Date: Wed, 28 Jan 2026 12:23:21 +0800 Message-Id: <20260128042321.2260321-1-nichen@iscas.ac.cn> X-Mailer: git-send-email 2.25.1 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-CM-TRANSID: zQCowAA3zRBTj3lpE7rYBg--.31474S2 X-Coremail-Antispam: 1UD129KBjvdXoW7Xr18ZF4rZr17ZF18tw4kCrg_yoWDAFcE9w 4kur93Gr4vvF9rtr1jvr13ArWSvF4qgFyDXF4jgFZ3try5Z39xWrWUZrnxJFy3Z3yIkF1v k3WrCrW3C3WrCjkaLaAFLSUrUUUUbb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUIcSsGvfJTRUUUbsxFF20E14v26r4j6ryUM7CY07I20VC2zVCF04k26cxKx2IYs7xG 6rWj6s0DM7CIcVAFz4kK6r1j6r18M28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48ve4kI8w A2z4x0Y4vE2Ix0cI8IcVAFwI0_Gr0_Xr1l84ACjcxK6xIIjxv20xvEc7CjxVAFwI0_Gr0_ Cr1l84ACjcxK6I8E87Iv67AKxVWxJr0_GcWl84ACjcxK6I8E87Iv6xkF7I0E14v26rxl6s 0DM2AIxVAIcxkEcVAq07x20xvEncxIr21l5I8CrVACY4xI64kE6c02F40Ex7xfMcIj6xII jxv20xvE14v26r1Y6r17McIj6I8E87Iv67AKxVWUJVW8JwAm72CE4IkC6x0Yz7v_Jr0_Gr 1lF7xvr2IYc2Ij64vIr41lF7I21c0EjII2zVCS5cI20VAGYxC7MxkF7I0En4kS14v26r1q 6r43MxkIecxEwVAFwVW8XwCF04k20xvY0x0EwIxGrwCFx2IqxVCFs4IE7xkEbVWUJVW8Jw C20s026c02F40E14v26r1j6r18MI8I3I0E7480Y4vE14v26r106r1rMI8E67AF67kF1VAF wI0_Jw0_GFylIxkGc2Ij64vIr41lIxAIcVC0I7IYx2IY67AKxVWUJVWUCwCI42IY6xIIjx v20xvEc7CjxVAFwI0_Gr0_Cr1lIxAIcVCF04k26cxKx2IYs7xG6r1j6r1xMIIF0xvEx4A2 jsIE14v26r1j6r4UMIIF0xvEx4A2jsIEc7CjxVAFwI0_Gr0_Gr1UYxBIdaVFxhVjvjDU0x ZFpf9x0JUhZ2-UUUUU= X-CM-SenderInfo: xqlfxv3q6l2u1dvotugofq/ Content-Type: text/plain; charset="utf-8" Add check for the return value of device_property_read_u32_array() and return the error if it fails in order to catch the error. Signed-off-by: Chen Ni --- drivers/dma/stm32/stm32-mdma.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/drivers/dma/stm32/stm32-mdma.c b/drivers/dma/stm32/stm32-mdma.c index b87d41b234df..f833724cf42c 100644 --- a/drivers/dma/stm32/stm32-mdma.c +++ b/drivers/dma/stm32/stm32-mdma.c @@ -1630,9 +1630,11 @@ static int stm32_mdma_probe(struct platform_device *= pdev) =20 dmadev->nr_channels =3D nr_channels; dmadev->nr_requests =3D nr_requests; - device_property_read_u32_array(&pdev->dev, "st,ahb-addr-masks", - dmadev->ahb_addr_masks, - count); + ret =3D device_property_read_u32_array(&pdev->dev, "st,ahb-addr-masks", + dmadev->ahb_addr_masks, + count); + if (ret) + return ret; =20 dmadev->base =3D devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(dmadev->base)) --=20 2.25.1