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authorDouglas Anderson <dianders@chromium.org>2021-04-16 15:39:24 -0700
committerDouglas Anderson <dianders@chromium.org>2021-04-20 08:56:44 -0700
commitbab5cca7e609952b069a550e39fe4893149fb658 (patch)
tree6c225473e7e62c58a38faa7d689c7ca9bc68f4a4 /drivers/gpu/drm/drm_bridge.c
parenta584e2c301839184caf4fd291ff2ab578d914c90 (diff)
drm/bridge: Fix the stop condition of drm_bridge_chain_pre_enable()
The drm_bridge_chain_pre_enable() is not the proper opposite of drm_bridge_chain_post_disable(). It continues along the chain to _before_ the starting bridge. Let's fix that. Fixes: 05193dc38197 ("drm/bridge: Make the bridge chain a double-linked list") Signed-off-by: Douglas Anderson <dianders@chromium.org> Reviewed-by: Andrzej Hajda <a.hajda@samsung.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210416153909.v4.1.If62a003f76a2bc4ccc6c53565becc05d2aad4430@changeid
Diffstat (limited to 'drivers/gpu/drm/drm_bridge.c')
-rw-r--r--drivers/gpu/drm/drm_bridge.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_bridge.c b/drivers/gpu/drm/drm_bridge.c
index 64f0effb52ac..044acd07c153 100644
--- a/drivers/gpu/drm/drm_bridge.c
+++ b/drivers/gpu/drm/drm_bridge.c
@@ -522,6 +522,9 @@ void drm_bridge_chain_pre_enable(struct drm_bridge *bridge)
list_for_each_entry_reverse(iter, &encoder->bridge_chain, chain_node) {
if (iter->funcs->pre_enable)
iter->funcs->pre_enable(iter);
+
+ if (iter == bridge)
+ break;
}
}
EXPORT_SYMBOL(drm_bridge_chain_pre_enable);