Commit 77c97a7e authored by Robin Murphy's avatar Robin Murphy Committed by Greg Kroah-Hartman
Browse files

habanalabs: Stop using iommu_present() 



Even if an IOMMU might be present for some PCI segment in the system,
that doesn't necessarily mean it provides translation for the device
we care about. Replace iommu_present() with a more appropriate check.

Signed-off-by: default avatarRobin Murphy <robin.murphy@arm.com>
Reviewed-by: default avatarOded Gabbay <ogabbay@kernel.org>
Signed-off-by: default avatarOded Gabbay <ogabbay@kernel.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 0ff1d6f8

drivers/misc/habanalabs/common/debugfs.c

+1 −1
Original line number Diff line number Diff line
@@ -722,7 +722,7 @@ static int hl_access_mem(struct hl_device *hdev, u64 addr, u64 *val, 
	if (found)

		return 0;



	if (!user_address || iommu_present(&pci_bus_type)) {

	if (!user_address || device_iommu_mapped(&hdev->pdev->dev)) {

		rc = -EINVAL;

		goto err;

	}