When virtfn is used, we should use physfn to find correct drhd
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
---
drivers/pci/dmar.c | 5 +++++
1 files changed, 5 insertions(+), 0 deletions(-)
diff --git a/drivers/pci/dmar.c b/drivers/pci/dmar.c
index d2f66a6..550f0a9 100644
--- a/drivers/pci/dmar.c
+++ b/drivers/pci/dmar.c
@@ -534,6 +534,11 @@ dmar_find_matched_drhd_unit(struct pci_dev *dev)
struct dmar_drhd_unit *dmaru = NULL;
struct acpi_dmar_hardware_unit *drhd;
+#ifdef CONFIG_PCI_IOV
+ if (dev->is_virtfn)
+ dev = dev->physfn;
+#endif
+
list_for_each_entry(dmaru, &dmar_drhd_units, list) {
drhd = container_of(dmaru->hdr,
struct acpi_dmar_hardware_unit,
--
1.6.4.2
--
