This is a note to let you know that I've just added the patch titled drm/exynos: Don't reset bridge->next to the 5.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: drm-exynos-don-t-reset-bridge-next.patch and it can be found in the queue-5.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit 3f61d47304a22fbab3e62d5143206c539100803e Author: Boris Brezillon <boris.brezillon@xxxxxxxxxxxxx> Date: Wed Oct 23 17:44:53 2019 +0200 drm/exynos: Don't reset bridge->next [ Upstream commit bd19c4527056b3e42e8c286136660aa14d0b6c90 ] bridge->next is only points to the new bridge if drm_bridge_attach() succeeds. No need to reset it manually here. Note that this change is part of the attempt to make the bridge chain a double-linked list. In order to do that we must patch all drivers manipulating the bridge->next field. Signed-off-by: Boris Brezillon <boris.brezillon@xxxxxxxxxxxxx> Reviewed-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx> Acked-by: Inki Dae <inki.dae@xxxxxxxxxxx> Link: https://patchwork.freedesktop.org/patch/msgid/20191023154512.9762-3-boris.brezillon@xxxxxxxxxxxxx Stable-dep-of: 13fcfcb2a9a4 ("drm/msm/mdp5: Add check for kzalloc") Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/drivers/gpu/drm/exynos/exynos_dp.c b/drivers/gpu/drm/exynos/exynos_dp.c index e0cfae744afc9..01c5fbf9083a0 100644 --- a/drivers/gpu/drm/exynos/exynos_dp.c +++ b/drivers/gpu/drm/exynos/exynos_dp.c @@ -109,7 +109,6 @@ static int exynos_dp_bridge_attach(struct analogix_dp_plat_data *plat_data, if (ret) { DRM_DEV_ERROR(dp->dev, "Failed to attach bridge to drm\n"); - bridge->next = NULL; return ret; } }