From: Miaoqian Lin <linmq006@gmail.com>
Date: Mon, 10 Jan 2022 06:53:16 +0000 (+0000)
Subject: drm/tegra: Fix reference leak in tegra_dsi_ganged_probe
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=5e8fdb6392d945d33fef959eab73f8c34bc0a63b;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

drm/tegra: Fix reference leak in tegra_dsi_ganged_probe

[ Upstream commit 221e3638feb8bc42143833c9a704fa89b6c366bb ]

The reference taken by 'of_find_device_by_node()' must be released when
not needed anymore. Add put_device() call to fix this.

Fixes: e94236cde4d5 ("drm/tegra: dsi: Add ganged mode support")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---

diff --git a/drivers/gpu/drm/tegra/dsi.c b/drivers/gpu/drm/tegra/dsi.c
index 046649ec9441..4e06af34c048 100644
--- a/drivers/gpu/drm/tegra/dsi.c
+++ b/drivers/gpu/drm/tegra/dsi.c
@@ -1480,8 +1480,10 @@ static int tegra_dsi_ganged_probe(struct tegra_dsi *dsi)
 		dsi->slave = platform_get_drvdata(gangster);
 		of_node_put(np);
 
-		if (!dsi->slave)
+		if (!dsi->slave) {
+			put_device(&gangster->dev);
 			return -EPROBE_DEFER;
+		}
 
 		dsi->slave->master = dsi;
 	}