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Commit 05193dc3 authored by Boris Brezillon's avatar Boris Brezillon
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drm/bridge: Make the bridge chain a double-linked list



So that each element in the chain can easily access its predecessor.
This will be needed to support bus format negotiation between elements
of the bridge chain.

Signed-off-by: default avatarBoris Brezillon <boris.brezillon@collabora.com>
Reviewed-by: default avatarNeil Armstrong <narmstrong@baylibre.com>
Reviewed-by: default avatarLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191203141515.3597631-5-boris.brezillon@collabora.com
parent 35a61fe9
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