diff options
| author |   Robin Murphy <robin.murphy@arm.com> | 2022-04-11 13:36:32 +0100 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-05-22 21:01:18 +0200 |
| commit | 77c97a7ea85f3a1f8d2c3bf54869c0b6638519c7 (patch) | |
| tree | 482297b10151cab6d63ef5ee173efe52545559ff /drivers/misc | |
| parent | habanalabs: support debugfs Byte access to device DRAM (diff) | |
| download | linux-dev-77c97a7ea85f3a1f8d2c3bf54869c0b6638519c7.tar.xz linux-dev-77c97a7ea85f3a1f8d2c3bf54869c0b6638519c7.zip | |
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>
Diffstat (limited to 'drivers/misc')
| -rw-r--r-- | drivers/misc/habanalabs/common/debugfs.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/misc/habanalabs/common/debugfs.c b/drivers/misc/habanalabs/common/debugfs.c index 7c4a4d504e4c..a94f01713efd 100644 --- 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; } |