From: Joerg Roedel jroedel@suse.de
mainline inclusion from mainline-v4.20-rc1 commit 170ecbd5ff09aa9c8c1025a8563f76e01a24bb50 category:feature bugzilla:NA CVE:NA
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Use Use device_iommu_mapped() to check if the device is already mapped by an IOMMU.
Acked-by: Robin Murphy robin.murphy@arm.com Signed-off-by: Joerg Roedel jroedel@suse.de Signed-off-by: Chen Jun chenjun102@huawei.com Reviewed-by: Hanjun Guo guohanjun@huawei.com Signed-off-by: Yang Yingliang yangyingliang@huawei.com --- drivers/iommu/of_iommu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/iommu/of_iommu.c b/drivers/iommu/of_iommu.c index 82b46d0de64e..8ca2f0ed2525 100644 --- a/drivers/iommu/of_iommu.c +++ b/drivers/iommu/of_iommu.c @@ -218,7 +218,7 @@ const struct iommu_ops *of_iommu_configure(struct device *dev, * If we have reason to believe the IOMMU driver missed the initial * add_device callback for dev, replay it to get things in order. */ - if (ops && ops->add_device && dev->bus && !dev->iommu_group) + if (ops && ops->add_device && dev->bus && !device_iommu_mapped(dev)) err = ops->add_device(dev);
/* Ignore all other errors apart from EPROBE_DEFER */