diff -r -U3 linux-2.6.9-22.0.2.EL/drivers/ide/pci/amd74xx.c linux-2.6.9-22.0.2.EL-patched/drivers/ide/pci/amd74xx.c
--- linux-2.6.9-22.0.2.EL/drivers/ide/pci/amd74xx.c	2004-10-18 23:55:35.000000000 +0200
+++ linux-2.6.9-22.0.2.EL-patched/drivers/ide/pci/amd74xx.c	2006-02-12 22:01:13.000000000 +0100
@@ -72,6 +72,7 @@
 	{ PCI_DEVICE_ID_NVIDIA_NFORCE3S_SATA2,	0x50, AMD_UDMA_133 },
 	{ PCI_DEVICE_ID_NVIDIA_NFORCE_CK804_IDE,	0x50, AMD_UDMA_133 },
 	{ PCI_DEVICE_ID_NVIDIA_NFORCE_MCP04_IDE,	0x50, AMD_UDMA_133 },
+	{ PCI_DEVICE_ID_NVIDIA_NFORCE_MCP51_IDE,	0x50, AMD_UDMA_133 },
 	{ 0 }
 };
 
@@ -487,6 +488,7 @@
 	/* 12 */ DECLARE_NV_DEV("NFORCE3-250-SATA2"),
 	/* 13 */ DECLARE_NV_DEV("NFORCE-CK804"),
 	/* 14 */ DECLARE_NV_DEV("NFORCE-MCP04"),
+	/* 15 */ DECLARE_NV_DEV("NFORCE-MCP51"),
 };
 
 static int __devinit amd74xx_probe(struct pci_dev *dev, const struct pci_device_id *id)
@@ -518,6 +520,7 @@
 #endif
 	{ PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_CK804_IDE,	PCI_ANY_ID, PCI_ANY_ID, 0, 0, 13 },
 	{ PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP04_IDE,	PCI_ANY_ID, PCI_ANY_ID, 0, 0, 14 },
+	{ PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP51_IDE,	PCI_ANY_ID, PCI_ANY_ID, 0, 0, 15 },
 	{ 0, },
 };
 MODULE_DEVICE_TABLE(pci, amd74xx_pci_tbl);
diff -r -U3 linux-2.6.9-22.0.2.EL/include/linux/pci_ids.h linux-2.6.9-22.0.2.EL-patched/include/linux/pci_ids.h
--- linux-2.6.9-22.0.2.EL/include/linux/pci_ids.h	2006-02-13 19:01:45.000000000 +0100
+++ linux-2.6.9-22.0.2.EL-patched/include/linux/pci_ids.h	2006-02-12 22:04:01.000000000 +0100
@@ -1149,6 +1149,16 @@
 #define PCI_DEVICE_ID_NVIDIA_QUADRO4_900XGL	0x0258
 #define PCI_DEVICE_ID_NVIDIA_QUADRO4_750XGL	0x0259
 #define PCI_DEVICE_ID_NVIDIA_QUADRO4_700XGL	0x025B
+#define PCI_DEVICE_ID_NVIDIA_NFORCE_MCP51_IDE   0x0265
+#define PCI_DEVICE_ID_NVIDIA_NFORCE_MCP51_SATA  0x0266
+#define PCI_DEVICE_ID_NVIDIA_NFORCE_MCP51_SATA2 0x0267
+#define PCI_DEVICE_ID_NVIDIA_NVENET_12          0x0268
+#define PCI_DEVICE_ID_NVIDIA_NVENET_13          0x0269
+#define PCI_DEVICE_ID_NVIDIA_MCP51_AUDIO      	0x026B
+#define PCI_DEVICE_ID_NVIDIA_NVENET_12		0x0268
+#define PCI_DEVICE_ID_NVIDIA_NVENET_13		0x0269
+#define PCI_DEVICE_ID_NVIDIA_NVENET_14		0x0372
+#define PCI_DEVICE_ID_NVIDIA_NVENET_15		0x0373
 
 #define PCI_VENDOR_ID_IMS		0x10e0
 #define PCI_DEVICE_ID_IMS_8849		0x8849