diff mbox series

[4.19,35/49] drm/mediatek: Add exception handing in mtk_drm_probe() if component init fail

Message ID 20200921162036.209603125@linuxfoundation.org
State Superseded
Headers show
Series None | expand

Commit Message

gregkh@linuxfoundation.org Sept. 21, 2020, 4:28 p.m. UTC 
From: Yu Kuai <yukuai3@huawei.com>

[ Upstream commit 64c194c00789889b0f9454f583712f079ba414ee ]

mtk_ddp_comp_init() is called in a loop in mtk_drm_probe(), if it
fail, previous successive init component is not proccessed.

Thus uninitialize valid component and put their device if component
init failed.

Fixes: 119f5173628a ("drm/mediatek: Add DRM Driver for Mediatek SoC MT8173.")
Signed-off-by: Yu Kuai <yukuai3@huawei.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_drv.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.c b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
index 947bc6d623020..d143217636071 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
@@ -600,8 +600,13 @@  err_pm:
 	pm_runtime_disable(dev);
 err_node:
 	of_node_put(private->mutex_node);
-	for (i = 0; i < DDP_COMPONENT_ID_MAX; i++)
+	for (i = 0; i < DDP_COMPONENT_ID_MAX; i++) {
 		of_node_put(private->comp_node[i]);
+		if (private->ddp_comp[i]) {
+			put_device(private->ddp_comp[i]->larb_dev);
+			private->ddp_comp[i] = NULL;
+		}
+	}
 	return ret;
 }