[PATCH] crypto: qat - stop using iommu_present()

From: Robin Murphy
Date: Tue Apr 05 2022 - 20:22:16 EST


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@xxxxxxx>
---
drivers/crypto/qat/qat_common/adf_sriov.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/crypto/qat/qat_common/adf_sriov.c b/drivers/crypto/qat/qat_common/adf_sriov.c
index b960bca1f9d2..7f9c18dc4540 100644
--- a/drivers/crypto/qat/qat_common/adf_sriov.c
+++ b/drivers/crypto/qat/qat_common/adf_sriov.c
@@ -3,7 +3,6 @@
#include <linux/workqueue.h>
#include <linux/pci.h>
#include <linux/device.h>
-#include <linux/iommu.h>
#include "adf_common_drv.h"
#include "adf_cfg.h"
#include "adf_pfvf_pf_msg.h"
@@ -176,7 +175,7 @@ int adf_sriov_configure(struct pci_dev *pdev, int numvfs)
return -EFAULT;
}

- if (!iommu_present(&pci_bus_type))
+ if (!device_iommu_mapped(&pdev->dev))
dev_warn(&pdev->dev, "IOMMU should be enabled for SR-IOV to work correctly\n");

if (accel_dev->pf.vf_info) {
--
2.28.0.dirty