linux-kernel - [PATCH v1 3/5] [media] mtk-mdp: handle vpu_wdt_reg

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Date:   Tue,  5 May 2020 14:00:46 +1000
From:   Eizan Miyamoto <eizan@...omium.org>
To:     LKML <linux-kernel@...r.kernel.org>
Cc:     Eizan Miyamoto <eizan@...gle.com>, eizan@...omium.org,
        Andrew-CT Chen <andrew-ct.chen@...iatek.com>,
        Houlong Wei <houlong.wei@...iatek.com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Minghsiu Tsai <minghsiu.tsai@...iatek.com>,
        linux-arm-kernel@...ts.infradead.org, linux-media@...r.kernel.org,
        linux-mediatek@...ts.infradead.org
Subject: [PATCH v1 3/5] [media] mtk-mdp: handle vpu_wdt_reg_handler() errors during probe

This is a cleanup to better handle errors during MDP probe.

Signed-off-by: eizan@...omium.org
Signed-off-by: Eizan Miyamoto <eizan@...gle.com>
---

 drivers/media/platform/mtk-mdp/mtk_mdp_core.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/drivers/media/platform/mtk-mdp/mtk_mdp_core.c b/drivers/media/platform/mtk-mdp/mtk_mdp_core.c
index c20ac7681c6f..f974242663dc 100644
--- a/drivers/media/platform/mtk-mdp/mtk_mdp_core.c
+++ b/drivers/media/platform/mtk-mdp/mtk_mdp_core.c
@@ -188,8 +188,12 @@ static int mtk_mdp_probe(struct platform_device *pdev)
 	}
 
 	mdp->vpu_dev = vpu_get_plat_device(pdev);
-	vpu_wdt_reg_handler(mdp->vpu_dev, mtk_mdp_reset_handler, mdp,
-			    VPU_RST_MDP);
+	ret = vpu_wdt_reg_handler(mdp->vpu_dev, mtk_mdp_reset_handler, mdp,
+				  VPU_RST_MDP);
+	if (ret) {
+		dev_err(&pdev->dev, "Failed to register reset handler\n");
+		goto err_wdt_reg;
+	}
 
 	platform_set_drvdata(pdev, mdp);
 
@@ -206,6 +210,8 @@ static int mtk_mdp_probe(struct platform_device *pdev)
 
 err_set_max_seg_size:
 
+err_wdt_reg:
+
 err_m2m_register:
 	v4l2_device_unregister(&mdp->v4l2_dev);
 
-- 
2.26.2.526.g744177e7f7-goog