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Sun, 26 Apr 2026 06:58:23 -0700 (PDT) Received: from localhost.localdomain ([1.226.165.54]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-82f8ebbcfd7sm36558098b3a.32.2026.04.26.06.58.20 (version=TLS1_3 cipher=TLS_CHACHA20_POLY1305_SHA256 bits=256/256); Sun, 26 Apr 2026 06:58:22 -0700 (PDT) From: Myeonghun Pak To: Maxime Ripard , Mauro Carvalho Chehab Cc: Myeonghun Pak , Chen-Yu Tsai , Jernej Skrabec , Samuel Holland , linux-media@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-sunxi@lists.linux.dev, linux-kernel@vger.kernel.org, Ijae Kim Subject: [PATCH] media: sun4i-csi: Clean up media device on probe errors Date: Sun, 26 Apr 2026 22:58:11 +0900 Message-ID: <20260426135816.8080-1-mhun512@gmail.com> X-Mailer: git-send-email 2.47.1 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit sun4i_csi_probe() initializes the media device before acquiring the MMIO resource, IRQ, clocks, reset control and media entity pads. Several of those failure paths return directly. media_device_cleanup() is still required after media_device_init(), and a failed probe does not run the driver remove callback. Route those errors through the existing media-device cleanup path before returning. Co-developed-by: Ijae Kim Signed-off-by: Ijae Kim Signed-off-by: Myeonghun Pak --- drivers/media/platform/sunxi/sun4i-csi/sun4i_csi.c | 32 ++++++++++++++-------- 1 file changed, 20 insertions(+), 12 deletions(-) diff --git a/drivers/media/platform/sunxi/sun4i-csi/sun4i_csi.c b/drivers/media/platform/sunxi/sun4i-csi/sun4i_csi.c index e53a07b770..a504a1c78e 100644 --- a/drivers/media/platform/sunxi/sun4i-csi/sun4i_csi.c +++ b/drivers/media/platform/sunxi/sun4i-csi/sun4i_csi.c @@ -187,37 +187,45 @@ static int sun4i_csi_probe(struct platform_device *pdev) csi->v4l.mdev = &csi->mdev; csi->regs = devm_platform_ioremap_resource(pdev, 0); - if (IS_ERR(csi->regs)) - return PTR_ERR(csi->regs); + if (IS_ERR(csi->regs)) { + ret = PTR_ERR(csi->regs); + goto err_clean_mdev; + } irq = platform_get_irq(pdev, 0); - if (irq < 0) - return irq; + if (irq < 0) { + ret = irq; + goto err_clean_mdev; + } csi->bus_clk = devm_clk_get(&pdev->dev, "bus"); if (IS_ERR(csi->bus_clk)) { dev_err(&pdev->dev, "Couldn't get our bus clock\n"); - return PTR_ERR(csi->bus_clk); + ret = PTR_ERR(csi->bus_clk); + goto err_clean_mdev; } if (csi->traits->has_isp) { csi->isp_clk = devm_clk_get(&pdev->dev, "isp"); if (IS_ERR(csi->isp_clk)) { dev_err(&pdev->dev, "Couldn't get our ISP clock\n"); - return PTR_ERR(csi->isp_clk); + ret = PTR_ERR(csi->isp_clk); + goto err_clean_mdev; } } csi->ram_clk = devm_clk_get(&pdev->dev, "ram"); if (IS_ERR(csi->ram_clk)) { dev_err(&pdev->dev, "Couldn't get our ram clock\n"); - return PTR_ERR(csi->ram_clk); + ret = PTR_ERR(csi->ram_clk); + goto err_clean_mdev; } csi->rst = devm_reset_control_get(&pdev->dev, NULL); if (IS_ERR(csi->rst)) { dev_err(&pdev->dev, "Couldn't get our reset line\n"); - return PTR_ERR(csi->rst); + ret = PTR_ERR(csi->rst); + goto err_clean_mdev; } /* Initialize subdev */ @@ -236,17 +244,17 @@ static int sun4i_csi_probe(struct platform_device *pdev) ret = media_entity_pads_init(&subdev->entity, CSI_SUBDEV_PADS, csi->subdev_pads); if (ret < 0) - return ret; + goto err_clean_mdev; csi->vdev_pad.flags = MEDIA_PAD_FL_SINK | MEDIA_PAD_FL_MUST_CONNECT; vdev->entity.ops = &sun4i_csi_video_entity_ops; ret = media_entity_pads_init(&vdev->entity, 1, &csi->vdev_pad); if (ret < 0) - return ret; + goto err_clean_mdev; ret = sun4i_csi_dma_register(csi, irq); if (ret) - goto err_clean_pad; + goto err_clean_mdev; ret = sun4i_csi_notifier_init(csi); if (ret) @@ -266,7 +274,7 @@ static int sun4i_csi_probe(struct platform_device *pdev) media_device_unregister(&csi->mdev); sun4i_csi_dma_unregister(csi); -err_clean_pad: +err_clean_mdev: media_device_cleanup(&csi->mdev); return ret;