igb: Add comment
Add explanatory comment to avoid confusion when a pointer is set
to the second word of an array instead of the customary cast of a
pointer to the beginning of the array.
Signed-off-by: Greg Rose <gregory.v.rose@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/igb/igb_main.c b/drivers/net/igb/igb_main.c
index d811462..9cb04e2 100644
--- a/drivers/net/igb/igb_main.c
+++ b/drivers/net/igb/igb_main.c
@@ -4974,6 +4974,10 @@
static int igb_set_vf_mac_addr(struct igb_adapter *adapter, u32 *msg, int vf)
{
+ /*
+ * The VF MAC Address is stored in a packed array of bytes
+ * starting at the second 32 bit word of the msg array
+ */
unsigned char *addr = (char *)&msg[1];
int err = -1;