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SubjectRe: [PATCH 4/6] pci/dmar/sriov: use physfn to search drhd for VF
please check

Subject: [PATCH] pci/dmar/sriov: use physfn to search drhd for VF

When virtfn is used, we should use physfn to find correct drhd

-v2: add pci_physfn() Suggested by Roland Dreier <rdreier@cisco.com>
do can remove ifdef in dmar.c

Signed-off-by: Yinghai Lu <yinghai@kernel.org>

---
drivers/pci/dmar.c | 2 ++
include/linux/pci.h | 10 ++++++++++
2 files changed, 12 insertions(+)

Index: linux-2.6/drivers/pci/dmar.c
===================================================================
--- linux-2.6.orig/drivers/pci/dmar.c
+++ linux-2.6/drivers/pci/dmar.c
@@ -534,6 +534,8 @@ dmar_find_matched_drhd_unit(struct pci_d
struct dmar_drhd_unit *dmaru = NULL;
struct acpi_dmar_hardware_unit *drhd;

+ dev = pci_physfn(dev);
+
list_for_each_entry(dmaru, &dmar_drhd_units, list) {
drhd = container_of(dmaru->hdr,
struct acpi_dmar_hardware_unit,
Index: linux-2.6/include/linux/pci.h
===================================================================
--- linux-2.6.orig/include/linux/pci.h
+++ linux-2.6/include/linux/pci.h
@@ -334,6 +334,16 @@ struct pci_dev {
#endif
};

+static inline struct pci_dev *pci_physfn(struct pci_dev *dev)
+{
+#ifdef CONFIG_PCI_IOV
+ if (dev->is_virtfn)
+ dev = dev->physfn;
+#endif
+
+ return dev;
+}
+
extern struct pci_dev *alloc_pci_dev(void);

#define pci_dev_b(n) list_entry(n, struct pci_dev, bus_list)

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