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habanalabs: Stop using iommu_present()

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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>
This commit is contained in:
Robin Murphy 2022-04-11 13:36:32 +01:00 committed by Greg Kroah-Hartman
parent 0ff1d6f8f5
commit 77c97a7ea8
1 changed files with 1 additions and 1 deletions
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2
drivers/misc/habanalabs/common/debugfs.c
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@ -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;
}