UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

drm/mediatek: Fix underrun in VDO1 when switches off the layer 

[ Upstream commit 73b5ab27ab2ee616f2709dc212c2b0007894a12e ]

Do not reset Merge while using CMDQ because reset API doesn't
wait for frame done event as CMDQ does and could lead to
underrun when the layer is switching off.

Fixes: aaf94f7c3a ("drm/mediatek: Add display merge async reset control")

Reviewed-by: CK Hu <ck.hu@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Hsiao Chien Sung <shawn.sung@mediatek.com>
Link: https://patchwork.kernel.org/project/dri-devel/patch/20231214055847.4936-23-shawn.sung@mediatek.com/
Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Hsiao Chien Sung 2023-12-14 13:58:46 +08:00 committed by Greg Kroah-Hartman
parent f3e6324000
commit 37e452306a
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/gpu/drm/mediatek/mtk_disp_merge.c
View File

@ -103,7 +103,7 @@ void mtk_merge_stop_cmdq(struct device *dev, struct cmdq_pkt *cmdq_pkt)
mtk_ddp_write(cmdq_pkt, 0, &priv->cmdq_reg, priv->regs,
DISP_REG_MERGE_CTRL);
if (priv->async_clk)
if (!cmdq_pkt && priv->async_clk)
reset_control_reset(priv->reset_ctl);
}