Make sure to drop the reference taken when looking up the companion device during probe().
Note that holding a reference to a device does not prevent its driver data from going away so there is no point in keeping the reference.
Fixes: f68ba6912bd2 ("drm/tegra: dc: Link DC1 to DC0 on Tegra20") Cc: stable@vger.kernel.org # 4.16 Cc: Dmitry Osipenko digetx@gmail.com Signed-off-by: Johan Hovold johan@kernel.org --- drivers/gpu/drm/tegra/dc.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/gpu/drm/tegra/dc.c b/drivers/gpu/drm/tegra/dc.c index 59d5c1ba145a..7a6b30df6a89 100644 --- a/drivers/gpu/drm/tegra/dc.c +++ b/drivers/gpu/drm/tegra/dc.c @@ -3148,6 +3148,8 @@ static int tegra_dc_couple(struct tegra_dc *dc) dc->client.parent = &parent->client;
dev_dbg(dc->dev, "coupled to %s\n", dev_name(companion)); + + put_device(companion); }
return 0;