Tigon3: Handle posted writes correctly.

drivers/net/tg3.c

@@ -3206,12 +3206,19 @@ static int tg3_load_5701_a0_firmware_fix(struct tg3 *tp)
 	/* Now startup only the RX cpu. */
 	tw32(RX_CPU_BASE + CPU_STATE, 0xffffffff);
 	tw32(RX_CPU_BASE + CPU_PC,    TG3_FW_TEXT_ADDR);
+
+	/* Flush posted writes. */
+	tr32(RX_CPU_BASE + CPU_PC);
 	for (i = 0; i < 5; i++) {
 		if (tr32(RX_CPU_BASE + CPU_PC) == TG3_FW_TEXT_ADDR)
 			break;
 		tw32(RX_CPU_BASE + CPU_STATE, 0xffffffff);
 		tw32(RX_CPU_BASE + CPU_MODE,  CPU_MODE_HALT);
 		tw32(RX_CPU_BASE + CPU_PC,    TG3_FW_TEXT_ADDR);
+
+		/* Flush posted writes. */
+		tr32(RX_CPU_BASE + CPU_PC);
+
 		udelay(1000);
 	}
 	if (i >= 5) {
@@ -3224,6 +3231,9 @@ static int tg3_load_5701_a0_firmware_fix(struct tg3 *tp)
 	tw32(RX_CPU_BASE + CPU_STATE, 0xffffffff);
 	tw32(RX_CPU_BASE + CPU_MODE,  0x00000000);
 
+	/* Flush posted writes. */
+	tr32(RX_CPU_BASE + CPU_MODE);
+
 	return 0;
 }