From nobody Tue Dec 16 19:42:22 2025 Received: from cstnet.cn (smtp81.cstnet.cn [159.226.251.81]) (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 6AAD72030B; Sun, 23 Jun 2024 08:16:59 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=159.226.251.81 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1719130624; cv=none; b=JkUpE8crz3HxbmG2LnH32fY3jGQptLe0x6HkA313FbfPhlRpSNSMX7XUJIygec31Wj2dDCU8gvVhC6Xm2+QkMAK4+2qTRlsYHEZIHX97FtlUX3/iEeMAqD7jfcXzYVqjgMKRb1zjbGnb4R0AYUc3vEMbBjXlp4WghlGA08FK3Og= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1719130624; c=relaxed/simple; bh=f9uKGh9XaoDO7/wNKoqyEKZNvkDja4CrhL5Z9VskeM4=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=rwASWgTZ+MaZb5XUvJ4eiIkNI8SxAVKwWbJHvEi0CpkAOqLEvx3O+eOnw8dwVbETtM0xxqFdHlzAC5ghJxxn9r3ko3xN/pkMQDmFF4pgKUwXhhF0vw2uoY2gd8IIiRRBQwp7lDYzSUYp97XqtV8oL1WJywpUB0HCxcqlzUJ18Lg= 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=159.226.251.81 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 icess-ProLiant-DL380-Gen10.. (unknown [183.174.60.14]) by APP-03 (Coremail) with SMTP id rQCowABHTpru2XdmbDz5EQ--.47109S2; Sun, 23 Jun 2024 16:16:55 +0800 (CST) From: Ma Ke To: lars@metafoo.de, vkoul@kernel.org Cc: dmaengine@vger.kernel.org, linux-kernel@vger.kernel.org, Ma Ke Subject: [PATCH] dmaengine: axi-dmac: Add check for dma_set_max_seg_size Date: Sun, 23 Jun 2024 16:16:44 +0800 Message-Id: <20240623081644.2089695-1-make24@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: rQCowABHTpru2XdmbDz5EQ--.47109S2 X-Coremail-Antispam: 1UD129KBjvdXoW7Jw4rKw47WrWrtw4kCF1rJFb_yoW3uwcEkr 17uryfXr1qgw4xKwn8Kr1avrZFvryDZr4jqFn7K34Syr1UGFn8K39rZFZ5XF45ZayxGFW0 krnrXrWrtF4fXjkaLaAFLSUrUUUUUb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUIcSsGvfJTRUUUb4kFF20E14v26r1j6r4UM7CY07I20VC2zVCF04k26cxKx2IYs7xG 6r106r1rM7CIcVAFz4kK6r1j6r18M28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48ve4kI8w A2z4x0Y4vE2Ix0cI8IcVAFwI0_Jr0_JF4l84ACjcxK6xIIjxv20xvEc7CjxVAFwI0_Jr0_ Gr1l84ACjcxK6I8E87Iv67AKxVWxJVW8Jr1l84ACjcxK6I8E87Iv6xkF7I0E14v26r4UJV WxJr1lnxkEFVAIw20F6cxK64vIFxWle2I262IYc4CY6c8Ij28IcVAaY2xG8wAqx4xG64xv F2IEw4CE5I8CrVC2j2WlYx0E2Ix0cI8IcVAFwI0_Jr0_Jr4lYx0Ex4A2jsIE14v26r1j6r 4UMcvjeVCFs4IE7xkEbVWUJVW8JwACjcxG0xvY0x0EwIxGrwACjI8F5VA0II8E6IAqYI8I 648v4I1l42xK82IYc2Ij64vIr41l4I8I3I0E4IkC6x0Yz7v_Jr0_Gr1lx2IqxVAqx4xG67 AKxVWUJVWUGwC20s026x8GjcxK67AKxVWUGVWUWwC2zVAF1VAY17CE14v26r126r1DMIIY rxkI7VAKI48JMIIF0xvE2Ix0cI8IcVAFwI0_Jr0_JF4lIxAIcVC0I7IYx2IY6xkF7I0E14 v26r1j6r4UMIIF0xvE42xK8VAvwI8IcIk0rVWUJVWUCwCI42IY6I8E87Iv67AKxVWUJVW8 JwCI42IY6I8E87Iv6xkF7I0E14v26r4j6r4UJbIYCTnIWIevJa73UjIFyTuYvjfU5sqWUU UUU X-CM-SenderInfo: ppdnvj2u6l2u1dvotugofq/ Content-Type: text/plain; charset="utf-8" To avoid possible failure of the dma_set_max_seg_size(), we should better check the return value of the dma_set_max_seg_size(). Signed-off-by: Ma Ke --- drivers/dma/dma-axi-dmac.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/dma/dma-axi-dmac.c b/drivers/dma/dma-axi-dmac.c index bdb752f11869..93543c2f1bd7 100644 --- a/drivers/dma/dma-axi-dmac.c +++ b/drivers/dma/dma-axi-dmac.c @@ -1051,7 +1051,9 @@ static int axi_dmac_probe(struct platform_device *pde= v) =20 INIT_LIST_HEAD(&dmac->chan.active_descs); =20 - dma_set_max_seg_size(&pdev->dev, UINT_MAX); + ret =3D dma_set_max_seg_size(&pdev->dev, UINT_MAX); + if (ret) + return ret; =20 dma_dev =3D &dmac->dma_dev; dma_cap_set(DMA_SLAVE, dma_dev->cap_mask); --=20 2.25.1