[PATCH v6 8/8] PCI: Skip Enhanced Allocation (EA) initialization for VF device

[sathyanarayanan . kuppuswamy]

From: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppusw...@linux.intel.com>

As per PCIe r4.0, sec 9.3.6, VF must not implement Enhanced Allocation
Capability. So skip pci_ea_init() for virtual devices.

Cc: Ashok Raj <ashok....@intel.com>
Cc: Keith Busch <keith.bu...@intel.com>
Suggested-by: Ashok Raj <ashok....@intel.com>
Signed-off-by: Kuppuswamy Sathyanarayanan 
<sathyanarayanan.kuppusw...@linux.intel.com>
---
 drivers/pci/pci.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index 1b27b5af3d55..266600a11769 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -3025,6 +3025,13 @@ void pci_ea_init(struct pci_dev *dev)
        int offset;
        int i;
 
+       /*
+        * Per PCIe r4.0, sec 9.3.6, VF must not implement Enhanced
+        * Allocation Capability.
+        */
+       if (dev->is_virtfn)
+               return;
+
        /* find PCI EA capability in list */
        ea = pci_find_capability(dev, PCI_CAP_ID_EA);
        if (!ea)
-- 
2.21.0