Re: [PATCH v3 0/4] drm/panel: refcounting panel lookups and references

[Neil Armstrong]

Hi,

On Fri, 17 Jul 2026 16:02:03 +0200, Albert Esteve wrote:
> The drm_panel subsystem provides kref-based reference counting [1]
> (drm_panel_get/put) but almost nothing in the tree actually uses it.
> This results in a systemic use-after-free pattern throughout the codebase.
> 
> This series aims to close all those issues.
> 
> Patches 1-2: fix the infrastructure. drm_panel_add/remove now keep
> a counted reference for the list entry. drm_panel_bridge_add_typed()
> now holds a counted reference for the lifetime of the panel_bridge.
> 
> [...]

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

[1/4] drm/panel: have drm_panel_add/remove manage a list reference
      https://gitlab.freedesktop.org/drm/misc/kernel/-/commit/61aebeadff40cded27168e53406e0120ad66e114
[2/4] drm/bridge/panel: hold a reference to the wrapped panel
      https://gitlab.freedesktop.org/drm/misc/kernel/-/commit/8f79d34ea8950fd825e0d6ecd713705a42f06417
[3/4] drm/panel: of_drm_find_panel() return a counted reference
      https://gitlab.freedesktop.org/drm/misc/kernel/-/commit/b71a623598d319cae2acd9df1b297cc948c58bc7
[4/4] drm/panel: find_panel_by_fwnode() return a counted reference
      https://gitlab.freedesktop.org/drm/misc/kernel/-/commit/ac3baea883dab989178dd4186090d6bcf52b8d55

-- 
Neil