Re: [PATCH v2] drm/bridge: panel: Fix device link for DRM_BRIDGE_ATTACH_NO_CONNECTOR

From: Neil Armstrong
Date: Wed Sep 20 2023 - 13:02:25 EST


Hi,

On Wed, 20 Sep 2023 10:27:27 +0200, AngeloGioacchino Del Regno wrote:
> 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().
>
> [...]

Thanks, Applied to https://anongit.freedesktop.org/git/drm/drm-misc.git (drm-misc-next)

[1/1] drm/bridge: panel: Fix device link for DRM_BRIDGE_ATTACH_NO_CONNECTOR
https://cgit.freedesktop.org/drm/drm-misc/commit/?id=887878014534186cc50dbd16a62e744ad217b4b1

--
Neil