[PATCH] Signedness issue in drivers/net/3c515.c

while playing with gcc 4.1 -Wextra warnings, I came across this one:

drivers/net/3c515.c:1027: warning: comparison of unsigned expression >= 0 is always true

Since i is unsigned the >= 0 check in the for loop is always true,
so we might spin there forever unless the if condition triggers.
Since i is only used in this loop, this patch changes it to
an integer.
Signed-off-by: Eric Sesterhenn <snakebyte@gmx.de>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

drivers/net/3c515.c

@@ -1003,7 +1003,8 @@ static int corkscrew_start_xmit(struct sk_buff *skb,
 		/* Calculate the next Tx descriptor entry. */
 		int entry = vp->cur_tx % TX_RING_SIZE;
 		struct boom_tx_desc *prev_entry;
-		unsigned long flags, i;
+		unsigned long flags;
+		int i;
 
 		if (vp->tx_full)	/* No room to transmit with */
 			return 1;