The meaning of is_physfn and how it's different to is_virtfn really
isn't clear unless you do a bit of digging. Add a comment to help out
the unaware.
Signed-off-by: Oliver O'Halloran <oohall@xxxxxxxxx>
---
include/linux/pci.h | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/include/linux/pci.h b/include/linux/pci.h
index 77448215ef5b..88bf71bfa757 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -393,6 +393,10 @@ struct pci_dev {
unsigned int is_managed:1;
unsigned int needs_freset:1; /* Requires fundamental reset */
unsigned int state_saved:1;
+ /*
+ * is_physfn indicates that the function can be used to host VFs.
+ * It is only set when both the kernel and the device support IOV.
+ */
unsigned int is_physfn:1;
unsigned int is_virtfn:1;
unsigned int reset_fn:1;
--
2.20.1
