sfc: Improve test for IOMMU in use
The device::iommu_group field may be set even if no IOMMU is in use.
iommu_present() is still a better indicator, although it doesn't tell
us whether *our* device is affected.
Reported-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
diff --git a/drivers/net/ethernet/sfc/rx.c b/drivers/net/ethernet/sfc/rx.c
index 5c45118..65646cd 100644
--- a/drivers/net/ethernet/sfc/rx.c
+++ b/drivers/net/ethernet/sfc/rx.c
@@ -677,7 +677,7 @@
#ifdef CONFIG_PPC64
bufs_in_recycle_ring = EFX_RECYCLE_RING_SIZE_IOMMU;
#else
- if (efx->pci_dev->dev.iommu_group)
+ if (iommu_present(&pci_bus_type))
bufs_in_recycle_ring = EFX_RECYCLE_RING_SIZE_IOMMU;
else
bufs_in_recycle_ring = EFX_RECYCLE_RING_SIZE_NOIOMMU;