tg3: Limit CLKREQ fix to A[01] of 57780 asic rev

This patch restricts the CLKREQ bugfix to the A0 and A1 revisions
of 57780 ASIC rev chips.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/tg3.c

@@ -11992,7 +11992,8 @@ static int __devinit tg3_get_invariants(struct tg3 *tp)
 				tp->tg3_flags2 &= ~TG3_FLG2_HW_TSO_2;
 			if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5784 ||
 			    GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5761 ||
-			    GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_57780)
+			    tp->pci_chip_rev_id == CHIPREV_ID_57780_A0 ||
+			    tp->pci_chip_rev_id == CHIPREV_ID_57780_A1)
 				tp->tg3_flags3 |= TG3_FLG3_CLKREQ_BUG;
 		}
 	} else if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5785) {

drivers/net/tg3.h

@@ -95,6 +95,8 @@
 #define  CHIPREV_ID_5752_A1		 0x6001
 #define  CHIPREV_ID_5714_A2		 0x9002
 #define  CHIPREV_ID_5906_A1		 0xc001
+#define  CHIPREV_ID_57780_A0		 0x57780000
+#define  CHIPREV_ID_57780_A1		 0x57780001
 #define  GET_ASIC_REV(CHIP_REV_ID)	((CHIP_REV_ID) >> 12)
 #define   ASIC_REV_5700			 0x07
 #define   ASIC_REV_5701			 0x00