The patch below does not apply to the 6.12-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <[email protected]>.
Thanks, Sasha ------------------ original commit in Linus's tree ------------------ >From bfef062695570842cf96358f2f46f4c6642c6689 Mon Sep 17 00:00:00 2001 From: Johan Hovold <[email protected]> Date: Fri, 21 Nov 2025 17:42:01 +0100 Subject: [PATCH] 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: e94236cde4d5 ("drm/tegra: dsi: Add ganged mode support") Fixes: 221e3638feb8 ("drm/tegra: Fix reference leak in tegra_dsi_ganged_probe") Cc: [email protected] # 3.19: 221e3638feb8 Cc: Thierry Reding <[email protected]> Signed-off-by: Johan Hovold <[email protected]> Signed-off-by: Thierry Reding <[email protected]> Link: https://patch.msgid.link/[email protected] --- drivers/gpu/drm/tegra/dsi.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/tegra/dsi.c b/drivers/gpu/drm/tegra/dsi.c index 175f5f9937b01..8ee96b59fdbc8 100644 --- a/drivers/gpu/drm/tegra/dsi.c +++ b/drivers/gpu/drm/tegra/dsi.c @@ -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); + put_device(&gangster->dev); + if (!dsi->slave) return -EPROBE_DEFER; - } dsi->slave->master = dsi; } -- 2.51.0
