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authorYong Wu <yong.wu@mediatek.com>2021-01-11 14:19:12 +0300
committerWill Deacon <will@kernel.org>2021-02-01 14:31:19 +0300
commit23357572bec6b7f900d855f6dda9c77bb6d1c2de (patch)
tree08f8a8bce30d1c07882bb9715d685419282c34c8 /drivers/iommu
parent8d2c749e5252466d8fc1917101f137966c61fd1c (diff)
downloadlinux-23357572bec6b7f900d855f6dda9c77bb6d1c2de.tar.xz
iommu/mediatek: Remove unnecessary check in attach_device
This priv_data is set in the of_xlate. if of_xlate failed, it should not enter attach_device. remove the unnecessary check. Signed-off-by: Yong Wu <yong.wu@mediatek.com> Reviewed-by: Tomasz Figa <tfiga@chromium.org> Link: https://lore.kernel.org/r/20210111111914.22211-32-yong.wu@mediatek.com Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'drivers/iommu')
-rw-r--r--drivers/iommu/mtk_iommu.c6
1 files changed, 0 insertions, 6 deletions
diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c
index 7403a7cb90ea..084fb4394ffc 100644
--- a/drivers/iommu/mtk_iommu.c
+++ b/drivers/iommu/mtk_iommu.c
@@ -453,9 +453,6 @@ static int mtk_iommu_attach_device(struct iommu_domain *domain,
struct device *m4udev = data->dev;
int ret, domid;
- if (!data)
- return -ENODEV;
-
domid = mtk_iommu_get_domain_id(dev, data->plat_data);
if (domid < 0)
return domid;
@@ -492,9 +489,6 @@ static void mtk_iommu_detach_device(struct iommu_domain *domain,
{
struct mtk_iommu_data *data = dev_iommu_priv_get(dev);
- if (!data)
- return;
-
mtk_iommu_config(data, dev, false, 0);
}