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video: rockchip: mpp: fix access null point in no mmu case

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Signed-off-by: Yandong Lin <yandong.lin@rock-chips.com>
Change-Id: I02445a25b68b2ad8e80b46dc5ffc44ef422ab616
This commit is contained in:
Yandong Lin
2023-03-17 11:02:35 +08:00
committed by Tao Huang
parent 9aa8154c25
commit b278cacd80
1 changed files with 6 additions and 0 deletions
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6
drivers/video/rockchip/mpp/mpp_iommu.c
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@@ -589,6 +589,9 @@ int mpp_iommu_dev_activate(struct mpp_iommu_info *info, struct mpp_dev *dev)
unsigned long flags;
int ret = 0;
if (!info)
return 0;
spin_lock_irqsave(&info->dev_lock, flags);
if (info->dev_active || !dev) {
@@ -614,6 +617,9 @@ int mpp_iommu_dev_deactivate(struct mpp_iommu_info *info, struct mpp_dev *dev)
{
unsigned long flags;
if (!info)
return 0;
spin_lock_irqsave(&info->dev_lock, flags);
if (info->dev_active != dev)