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| author | AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> | 2023-09-20 10:27:27 +0200 |
|---|---|---|
| committer | Neil Armstrong <neil.armstrong@linaro.org> | 2023-09-20 19:00:38 +0200 |
| commit | 887878014534186cc50dbd16a62e744ad217b4b1 (patch) | |
| tree | eec5d7869048a7de3619af13867a0e5eecf49c37 /kernel/reboot.c | |
| parent | 1c7a387ffef894b1ab3942f0482dac7a6e0a909c (diff) | |
drm/bridge: panel: Fix device link for DRM_BRIDGE_ATTACH_NO_CONNECTOR
When external bridges are attached with DRM_BRIDGE_ATTACH_NO_CONNECTOR,
the panel bridge may also get the same flag, but in the .attach()
callback for the panel bridge a device link is added only when this
flag is not present; To make things worse, the .detach() callback
tries to delete the device link unconditionally and without checking
if it was created in the first place, crashing the kernel with a NULL
pointer kernel panic upon calling panel_bridge_detach().
Fix that by moving the device_link_add() call before checking if the
DRM_BRIDGE_ATTACH_NO_CONNECTOR flag is present.
Fixes: 199cf07ebd2b ("drm/bridge: panel: Add a device link between drm device and panel device")
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Liu Ying <victor.liu@nxp.com>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230920082727.57729-1-angelogioacchino.delregno@collabora.com
Diffstat (limited to 'kernel/reboot.c')
0 files changed, 0 insertions, 0 deletions