linux-kernel - [PATCH 3/6] drm/tegra: hdmi: Fix some error handling paths in tegra_hdmi

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Message-Id: <9b7c564eb71977678b20abd73ee52001a51cf327.1693667005.git.christophe.jaillet@wanadoo.fr>
Date:   Sat,  2 Sep 2023 17:22:10 +0200
From:   Christophe JAILLET <christophe.jaillet@...adoo.fr>
To:     thierry.reding@...il.com, mperttunen@...dia.com, airlied@...il.com,
        daniel@...ll.ch, jonathanh@...dia.com, digetx@...il.com
Cc:     dri-devel@...ts.freedesktop.org, linux-tegra@...r.kernel.org,
        linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org,
        Christophe JAILLET <christophe.jaillet@...adoo.fr>
Subject: [PATCH 3/6] drm/tegra: hdmi: Fix some error handling paths in tegra_hdmi_probe()

If an error occurs after calling tegra_output_probe(),
tegra_output_remove() should be called as already done in the remove
function.

Fixes: 59d29c0ec93f ("drm/tegra: Allocate resources at probe time")
Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
---
 drivers/gpu/drm/tegra/hdmi.c | 20 +++++++++++++-------
 1 file changed, 13 insertions(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/tegra/hdmi.c b/drivers/gpu/drm/tegra/hdmi.c
index 80c760986d9e..c73e7fb1877e 100644
--- a/drivers/gpu/drm/tegra/hdmi.c
+++ b/drivers/gpu/drm/tegra/hdmi.c
@@ -1854,12 +1854,14 @@ static int tegra_hdmi_probe(struct platform_device *pdev)
 		return err;
 
 	hdmi->regs = devm_platform_ioremap_resource(pdev, 0);
-	if (IS_ERR(hdmi->regs))
-		return PTR_ERR(hdmi->regs);
+	if (IS_ERR(hdmi->regs)) {
+		err = PTR_ERR(hdmi->regs);
+		goto tegra_remove;
+	}
 
 	err = platform_get_irq(pdev, 0);
 	if (err < 0)
-		return err;
+		goto tegra_remove;
 
 	hdmi->irq = err;
 
@@ -1868,18 +1870,18 @@ static int tegra_hdmi_probe(struct platform_device *pdev)
 	if (err < 0) {
 		dev_err(&pdev->dev, "failed to request IRQ#%u: %d\n",
 			hdmi->irq, err);
-		return err;
+		goto tegra_remove;
 	}
 
 	platform_set_drvdata(pdev, hdmi);
 
 	err = devm_pm_runtime_enable(&pdev->dev);
 	if (err)
-		return err;
+		goto tegra_remove;
 
 	err = devm_tegra_core_dev_init_opp_table_common(&pdev->dev);
 	if (err)
-		return err;
+		goto tegra_remove;
 
 	INIT_LIST_HEAD(&hdmi->client.list);
 	hdmi->client.ops = &hdmi_client_ops;
@@ -1889,10 +1891,14 @@ static int tegra_hdmi_probe(struct platform_device *pdev)
 	if (err < 0) {
 		dev_err(&pdev->dev, "failed to register host1x client: %d\n",
 			err);
-		return err;
+		goto tegra_remove;
 	}
 
 	return 0;
+
+tegra_remove:
+	tegra_output_remove(&hdmi->output);
+	return err;
 }
 
 static void tegra_hdmi_remove(struct platform_device *pdev)
-- 
2.34.1