--- a/drivers/ata/ata_piix.c	2007-06-19 12:19:39.000000000 +0200
+++ b/drivers/ata/ata_piix.c	2007-07-05 22:11:52.000000000 +0200
@@ -767,8 +767,8 @@
 		 *	       except UDMA0 which is 00
 		 */
 		u_speed = min(2 - (udma & 1), udma);
-		if (udma == 5)
-			u_clock = 0x1000;	/* 100Mhz */
+		if (udma >= 5)
+			u_clock = 0x1000;	/* 133Mhz */
 		else if (udma > 2)
 			u_clock = 1;		/* 66Mhz */
 		else