diff --git a/drivers/ata/pata_cmd64x.c b/drivers/ata/pata_cmd64x.c
index 0235a1d3c2fb4308e9f38edcc961f4c982c986a3..7bc00d5fa600a85b7e2f7cf432023d81e5319c99 100644
--- a/drivers/ata/pata_cmd64x.c
+++ b/drivers/ata/pata_cmd64x.c
@@ -40,7 +40,7 @@
 
 enum {
 	CFR 		= 0x50,
-		CFR_INTR_CH0  = 0x02,
+		CFR_INTR_CH0  = 0x04,
 	CNTRL 		= 0x51,
 		CNTRL_DIS_RA0 = 0x40,
 		CNTRL_DIS_RA1 = 0x80,