linux-kernel - [PATCH 6.7 394/713] drm/tegra: rgb: Fix some error handling paths in tegra_dc_rgb

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Date: Sun, 24 Mar 2024 18:42:00 -0400
From: Sasha Levin <sashal@...nel.org>
To: linux-kernel@...r.kernel.org,
	stable@...r.kernel.org
Cc: Christophe JAILLET <christophe.jaillet@...adoo.fr>,
	Thierry Reding <treding@...dia.com>,
	Sasha Levin <sashal@...nel.org>
Subject: [PATCH 6.7 394/713] drm/tegra: rgb: Fix some error handling paths in tegra_dc_rgb_probe()

From: Christophe JAILLET <christophe.jaillet@...adoo.fr>

[ Upstream commit bc456b5d93dbfdbd89f2a036f4f3d8026595f9e4 ]

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>
Signed-off-by: Thierry Reding <treding@...dia.com>
Link: https://patchwork.freedesktop.org/patch/msgid/0001f61eb89048bc36241629b564195689cf54b6.1693667005.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/gpu/drm/tegra/rgb.c | 16 +++++++++++-----
 1 file changed, 11 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/tegra/rgb.c b/drivers/gpu/drm/tegra/rgb.c
index fc66bbd913b24..53c492b13d129 100644
--- a/drivers/gpu/drm/tegra/rgb.c
+++ b/drivers/gpu/drm/tegra/rgb.c
@@ -225,26 +225,28 @@ int tegra_dc_rgb_probe(struct tegra_dc *dc)
 	rgb->clk = devm_clk_get(dc->dev, NULL);
 	if (IS_ERR(rgb->clk)) {
 		dev_err(dc->dev, "failed to get clock\n");
-		return PTR_ERR(rgb->clk);
+		err = PTR_ERR(rgb->clk);
+		goto remove;
 	}
 
 	rgb->clk_parent = devm_clk_get(dc->dev, "parent");
 	if (IS_ERR(rgb->clk_parent)) {
 		dev_err(dc->dev, "failed to get parent clock\n");
-		return PTR_ERR(rgb->clk_parent);
+		err = PTR_ERR(rgb->clk_parent);
+		goto remove;
 	}
 
 	err = clk_set_parent(rgb->clk, rgb->clk_parent);
 	if (err < 0) {
 		dev_err(dc->dev, "failed to set parent clock: %d\n", err);
-		return err;
+		goto remove;
 	}
 
 	rgb->pll_d_out0 = clk_get_sys(NULL, "pll_d_out0");
 	if (IS_ERR(rgb->pll_d_out0)) {
 		err = PTR_ERR(rgb->pll_d_out0);
 		dev_err(dc->dev, "failed to get pll_d_out0: %d\n", err);
-		return err;
+		goto remove;
 	}
 
 	if (dc->soc->has_pll_d2_out0) {
@@ -252,13 +254,17 @@ int tegra_dc_rgb_probe(struct tegra_dc *dc)
 		if (IS_ERR(rgb->pll_d2_out0)) {
 			err = PTR_ERR(rgb->pll_d2_out0);
 			dev_err(dc->dev, "failed to get pll_d2_out0: %d\n", err);
-			return err;
+			goto remove;
 		}
 	}
 
 	dc->rgb = &rgb->output;
 
 	return 0;
+
+remove:
+	tegra_output_remove(&rgb->output);
+	return err;
 }
 
 void tegra_dc_rgb_remove(struct tegra_dc *dc)
-- 
2.43.0