drm/tegra: Fix reference leak in tegra_dsi_ganged_probe

[ Upstream commit 9abbcba86422c9eab3cc9ac1278581c16fd99fde ]

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

Fixes: 7373469cb0a4 ("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 f46d377f0c3046309c2bf1d12415f593f6aed467..de1333dc0d8670aa30dc9867d5c13a41691ea4a3 100644 (file)
--- a/drivers/gpu/drm/tegra/dsi.c
+++ b/drivers/gpu/drm/tegra/dsi.c
@@ -1538,8 +1538,10 @@ 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;
        }