[TG3]: Add 5750 A3 workaround.

Signed-off-by: David S. Miller <davem@redhat.com>

drivers/net/tg3.c

@@ -3723,6 +3723,8 @@ static void tg3_write_sig_legacy(struct tg3 *tp, int kind)
 	}
 }
 
+static void tg3_stop_fw(struct tg3 *);
+
 /* tp->lock is held. */
 static int tg3_chip_reset(struct tg3 *tp)
 {
@@ -3825,6 +3827,11 @@ static int tg3_chip_reset(struct tg3 *tp)
 
 	tw32(MEMARB_MODE, MEMARB_MODE_ENABLE);
 
+	if (tp->pci_chip_rev_id == CHIPREV_ID_5750_A3) {
+		tg3_stop_fw(tp);
+		tw32(0x5000, 0x400);
+	}
+
 	tw32(GRC_MODE, tp->grc_mode);
 
 	if (tp->pci_chip_rev_id == CHIPREV_ID_5705_A0) {

drivers/net/tg3.h

@@ -124,6 +124,7 @@
 #define  CHIPREV_ID_5705_A3		 0x3003
 #define  CHIPREV_ID_5750_A0		 0x4000
 #define  CHIPREV_ID_5750_A1		 0x4001
+#define  CHIPREV_ID_5750_A3		 0x4003
 #define  GET_ASIC_REV(CHIP_REV_ID)	((CHIP_REV_ID) >> 12)
 #define   ASIC_REV_5700			 0x07
 #define   ASIC_REV_5701			 0x00