diff -Nurp xf86-video-ati.orig/src/atipciids.h xf86-video-ati/src/atipciids.h
--- xf86-video-ati.orig/src/atipciids.h	2007-10-06 00:25:18.000000000 +0200
+++ xf86-video-ati/src/atipciids.h	2007-10-06 00:29:24.000000000 +0200
@@ -252,7 +252,7 @@
 #define PCI_CHIP_RV280_5965 		0x5965
 #define PCI_CHIP_RN50_5969		0x5969
 #define PCI_CHIP_RS482_5974             0x5974
-#define PCI_CHIP_RS482_5975             0x5975
+#define PCI_CHIP_RS485_5975             0x5975
 #define PCI_CHIP_RS400_5A41             0x5A41
 #define PCI_CHIP_RS400_5A42             0x5A42
 #define PCI_CHIP_RC410_5A61             0x5A61
diff -Nurp xf86-video-ati.orig/src/radeon_chipset.h xf86-video-ati/src/radeon_chipset.h
--- xf86-video-ati.orig/src/radeon_chipset.h	2007-10-06 00:25:18.000000000 +0200
+++ xf86-video-ati/src/radeon_chipset.h	2007-10-06 00:29:38.000000000 +0200
@@ -89,7 +89,7 @@ static SymTabRec RADEONChipsets[] = {
     { PCI_CHIP_RS480_5954, "ATI Radeon XPRESS 200 5954 (PCIE)" },
     { PCI_CHIP_RS480_5955, "ATI Radeon XPRESS 200M 5955 (PCIE)" },
     { PCI_CHIP_RS482_5974, "ATI Radeon XPRESS 200 5974 (PCIE)" },
-    { PCI_CHIP_RS482_5975, "ATI Radeon XPRESS 200M 5975 (PCIE)" },
+    { PCI_CHIP_RS485_5975, "ATI Radeon XPRESS 200M 5975 (PCIE)" },
     { PCI_CHIP_RV410_5E48, "ATI FireGL V5000 (RV410) (PCIE)" },
     { PCI_CHIP_RV410_564A, "ATI Mobility FireGL V5000 (M26) (PCIE)" },
     { PCI_CHIP_RV410_564B, "ATI Mobility FireGL V5000 (M26) (PCIE)" },
diff -Nurp xf86-video-ati.orig/src/radeon_driver.c xf86-video-ati/src/radeon_driver.c
--- xf86-video-ati.orig/src/radeon_driver.c	2007-10-06 00:25:18.000000000 +0200
+++ xf86-video-ati/src/radeon_driver.c	2007-10-06 00:30:07.000000000 +0200
@@ -1673,7 +1673,7 @@ static Bool RADEONPreInitChipType(ScrnIn
     case PCI_CHIP_RS400_5A42:
     case PCI_CHIP_RC410_5A62:
     case PCI_CHIP_RS480_5955:
-    case PCI_CHIP_RS482_5975:
+    case PCI_CHIP_RS485_5975:
         info->IsMobility = TRUE;
     case PCI_CHIP_RS400_5A41:
     case PCI_CHIP_RC410_5A61:
@@ -2131,7 +2131,7 @@ static Bool RADEONPreInitDRI(ScrnInfoPtr
 	info->Chipset == PCI_CHIP_RS480_5954 ||
 	info->Chipset == PCI_CHIP_RS480_5955 ||
 	info->Chipset == PCI_CHIP_RS482_5974 ||
-	info->Chipset == PCI_CHIP_RS482_5975) {
+	info->Chipset == PCI_CHIP_RS485_5975) {
 
 	if (info->pKernelDRMVersion->version_minor < 27) {
  	     xf86DrvMsg(pScrn->scrnIndex, X_INFO,
diff -Nurp xf86-video-ati.orig/src/radeon_probe.c xf86-video-ati/src/radeon_probe.c
--- xf86-video-ati.orig/src/radeon_probe.c	2007-10-06 00:25:18.000000000 +0200
+++ xf86-video-ati/src/radeon_probe.c	2007-10-06 00:31:53.000000000 +0200
@@ -144,7 +144,7 @@ PciChipsets RADEONPciChipsets[] = {
     { PCI_CHIP_RS480_5954, PCI_CHIP_RS480_5954, RES_SHARED_VGA },
     { PCI_CHIP_RS480_5955, PCI_CHIP_RS480_5955, RES_SHARED_VGA },
     { PCI_CHIP_RS482_5974, PCI_CHIP_RS482_5974, RES_SHARED_VGA },
-    { PCI_CHIP_RS482_5975, PCI_CHIP_RS482_5975, RES_SHARED_VGA },
+    { PCI_CHIP_RS485_5975, PCI_CHIP_RS485_5975, RES_SHARED_VGA },
     { PCI_CHIP_RV410_5E48, PCI_CHIP_RV410_5E48, RES_SHARED_VGA },
     { PCI_CHIP_RV410_564A, PCI_CHIP_RV410_564A, RES_SHARED_VGA },
     { PCI_CHIP_RV410_564B, PCI_CHIP_RV410_564B, RES_SHARED_VGA },