drm/mediatek: Add spinlock for setting vblank event in atomic_begin
authorJason-JH.Lin <jason-jh.lin@mediatek.com>
Wed, 20 Sep 2023 09:06:58 +0000 (17:06 +0800)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 20 Dec 2023 16:01:54 +0000 (17:01 +0100)
commit7d6e9cb7b95165b40e7718b017c16b543d93411a
tree24c691c7a70dc2055ee2fd13c3eb6a0028f4f20f
parent8964524158ace2f0fcc055e663ab5308cae40175
drm/mediatek: Add spinlock for setting vblank event in atomic_begin

[ Upstream commit fe4c5f662097978b6c91c23a13c24ed92339a180 ]

Add spinlock protection to avoid race condition on vblank event
between mtk_drm_crtc_atomic_begin() and mtk_drm_finish_page_flip().

Fixes: 119f5173628a ("drm/mediatek: Add DRM Driver for Mediatek SoC MT8173.")
Signed-off-by: Jason-JH.Lin <jason-jh.lin@mediatek.com>
Suggested-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Alexandre Mergnat <amergnat@baylibre.com>
Reviewed-by: Fei Shao <fshao@chromium.org>
Tested-by: Fei Shao <fshao@chromium.org>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: CK Hu <ck.hu@mediatek.com>
Link: https://patchwork.kernel.org/project/dri-devel/patch/20230920090658.31181-1-jason-jh.lin@mediatek.com/
Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
drivers/gpu/drm/mediatek/mtk_drm_crtc.c