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: Robin Murphy <robin.murphy@arm.com>
Reviewed-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/misc/habanalabs/common/debugfs.c b/drivers/misc/habanalabs/common/debugfs.c
index 7c4a4d5..a94f017 100644 (file)
--- a/drivers/misc/habanalabs/common/debugfs.c
+++ b/drivers/misc/habanalabs/common/debugfs.c
@@ -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;
        }