[PATCH 0/3] drm: Fix resource leaks on power-on failure paths
From: Tang Bin
Date: Wed Nov 04 2026 - 04:47:02 EST
This series fixes similar resource leak bugs in DRM panel and bridge
drivers.
In all three drivers, a primary resource (regulator or clock) is enabled
first, followed by a secondary resource. If enabling the secondary
resource fails, the drivers return directly without disabling the first
one. Because these resources are reference-counted and the matching
power-off/unprepare callbacks won't be triggered on failure, the
reference counts leak.
Patch 1 and 2 use goto labels to rollback the regulators. Patch 3 is a
void function and explicitly disables the leaked regulator on failure.
Tang Bin (3):
drm/panel: renesas-r61307: disable vcc on iovcc enable failure
drm/panel: otm8009a: disable supply on init_sequence failure
drm/bridge: anx6345: disable dvdd12 on dvdd25 enable failure
drivers/gpu/drm/bridge/analogix/analogix-anx6345.c | 1 +
drivers/gpu/drm/panel/panel-orisetech-otm8009a.c | 6 +++++-
drivers/gpu/drm/panel/panel-renesas-r61307.c | 6 +++++-
3 files changed, 11 insertions(+), 2 deletions(-)
--
2.52.0.windows.1