[PATCH v6 31/33] iommu/mediatek: Remove unnecessary check in attach_device

Yong Wu
2021-01-11T11:25:09Z

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>
---
drivers/iommu/mtk_iommu.c | 6 ------
1 file changed, 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);
}

--
2.18.0