[PATCH] sky2: bad memory reference on dual port cards

Sky2 driver will oops referencing bad memory if used on
a dual port card.  The problem is accessing past end of
MIB counter space.
Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/net/sky2.c

@@ -579,8 +579,8 @@ static void sky2_mac_init(struct sky2_hw *hw, unsigned port)
 	reg = gma_read16(hw, port, GM_PHY_ADDR);
 	gma_write16(hw, port, GM_PHY_ADDR, reg | GM_PAR_MIB_CLR);
 
-	for (i = 0; i < GM_MIB_CNT_SIZE; i++)
-		gma_read16(hw, port, GM_MIB_CNT_BASE + 8 * i);
+	for (i = GM_MIB_CNT_BASE; i <= GM_MIB_CNT_END; i += 4)
+		gma_read16(hw, port, i);
 	gma_write16(hw, port, GM_PHY_ADDR, reg);
 
 	/* transmit control */

drivers/net/sky2.h

@@ -1380,6 +1380,7 @@ enum {
 /* MIB Counters */
 #define GM_MIB_CNT_BASE	0x0100		/* Base Address of MIB Counters */
 #define GM_MIB_CNT_SIZE	44		/* Number of MIB Counters */
+#define GM_MIB_CNT_END	0x025C		/* Last MIB counter */
 
 /*
  * MIB Counters base address definitions (low word) -