From de42edde131cd09a556f0b90373569d64b92ef99 Mon Sep 17 00:00:00 2001 From: Greg Rose Date: Thu, 1 Jul 2010 13:39:23 +0000 Subject: [PATCH] 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 Signed-off-by: Jeff Kirsher Signed-off-by: David S. Miller --- drivers/net/igb/igb_main.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/net/igb/igb_main.c b/drivers/net/igb/igb_main.c index d811462ab9b6..9cb04e29ad13 100644 --- a/drivers/net/igb/igb_main.c +++ b/drivers/net/igb/igb_main.c @@ -4974,6 +4974,10 @@ static void igb_vf_reset_msg(struct igb_adapter *adapter, u32 vf) 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; -- 2.20.1