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Message-Id: <20220418121214.112709123@linuxfoundation.org>
Date: Mon, 18 Apr 2022 14:11:32 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
stable@...r.kernel.org, Miaoqian Lin <linmq006@...il.com>,
Thierry Reding <treding@...dia.com>,
Sasha Levin <sashal@...nel.org>
Subject: [PATCH 4.14 111/284] drm/tegra: Fix reference leak in tegra_dsi_ganged_probe
From: Miaoqian Lin <linmq006@...il.com>
[ 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@...il.com>
Signed-off-by: Thierry Reding <treding@...dia.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
drivers/gpu/drm/tegra/dsi.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
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;
}
--
2.34.1
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