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;
}
}
