Commit bfef0626 authored by Johan Hovold's avatar Johan Hovold Committed by Thierry Reding
Browse files

drm/tegra: dsi: fix device leak on probe 



Make sure to drop the reference taken when looking up the companion
(ganged) device and its driver data 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: e94236cd ("drm/tegra: dsi: Add ganged mode support")
Fixes: 221e3638 ("drm/tegra: Fix reference leak in tegra_dsi_ganged_probe")
Cc: stable@vger.kernel.org	# 3.19: 221e3638
Cc: Thierry Reding <treding@nvidia.com>
Signed-off-by: default avatarJohan Hovold <johan@kernel.org>
Signed-off-by: default avatarThierry Reding <treding@nvidia.com>
Link: https://patch.msgid.link/20251121164201.13188-1-johan@kernel.org
parent cd98e734

drivers/gpu/drm/tegra/dsi.c

+2 −4
Original line number Diff line number Diff line
@@ -1542,11 +1542,9 @@ static int tegra_dsi_ganged_probe(struct tegra_dsi *dsi) 
			return -EPROBE_DEFER;



		dsi->slave = platform_get_drvdata(gangster);



		if (!dsi->slave) {

		put_device(&gangster->dev);

		if (!dsi->slave)

			return -EPROBE_DEFER;

		}



		dsi->slave->master = dsi;

	}