diff -Nur linux-2.6.21.1.orig/drivers/ata/ahci.c linux-2.6.21.1/drivers/ata/ahci.c
--- linux-2.6.21.1.orig/drivers/ata/ahci.c	2007-05-16 13:27:49.717886000 +0800
+++ linux-2.6.21.1/drivers/ata/ahci.c	2007-05-16 13:42:40.155386000 +0800
@@ -415,6 +415,7 @@
 	/* ATI */
 	{ PCI_VDEVICE(ATI, 0x4380), board_ahci_sb600 }, /* ATI SB600 non-raid */
 	{ PCI_VDEVICE(ATI, 0x4381), board_ahci }, /* ATI SB600 raid */
+	{ PCI_VDEVICE(ATI, 0x4390), board_ahci_sb600 }, /* ATI SB700 non-raid */
 
 	/* VIA */
 	{ PCI_VDEVICE(VIA, 0x3349), board_ahci_vt8251 }, /* VIA VT8251 */