[PATCH] I2C i2c-nforce2: add support for nForce4 (patch against 2.6.11-rc4)

can you please apply the attached patch (against 2.6.11-rc4, but works
as well for 2.6.11-rc3-mm2),  that adds support for the two SMBusses of
the nForce4 to the i2c-nforce2 i2c bus driver.  The patch is reported to
work on the standard nForce4 (i.e. non-Ultra, non-SLI), but I expect
that it works as well for the other nForce4 chipsets, that seem to have
the same PCI-id for the SMBus-device.

This patch was proposed by Chuck <chunkeey@web.de>, thanks to him for the
information, testing and his patch.
Signed-off-by: Hans-Frieder Vogt <hfvogt@arcor.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/i2c/busses/i2c-nforce2.c

@@ -29,9 +29,10 @@
     nForce2 Ultra 400 MCP	0084
     nForce3 Pro150 MCP		00D4
     nForce3 250Gb MCP		00E4
+    nForce4 MCP			0052
 
-    This driver supports the 2 SMBuses that are included in the MCP2 of the
-    nForce2 chipset.
+    This driver supports the 2 SMBuses that are included in the MCP of the
+    nForce2/3/4 chipsets.
 */
 
 /* Note: we assume there can only be one nForce2, with two SMBus interfaces */
@@ -295,6 +296,7 @@ static struct pci_device_id nforce2_ids[] = {
 	{ PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE2S_SMBUS) },
 	{ PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE3_SMBUS) },
 	{ PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE3S_SMBUS) },
+	{ PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE4_SMBUS) },
 	{ 0 }
 };
 

include/linux/pci_ids.h

@@ -1098,6 +1098,7 @@
 #define PCI_DEVICE_ID_NVIDIA_NVENET_10		0x0037
 #define PCI_DEVICE_ID_NVIDIA_NVENET_11		0x0038
 #define PCI_DEVICE_ID_NVIDIA_NFORCE_MCP04_SATA2	0x003e
+#define PCI_DEVICE_ID_NVIDIA_NFORCE4_SMBUS	0x0052
 #define PCI_DEVICE_ID_NVIDIA_NFORCE_CK804_IDE	0x0053
 #define PCI_DEVICE_ID_NVIDIA_NFORCE_CK804_SATA	0x0054
 #define PCI_DEVICE_ID_NVIDIA_NFORCE_CK804_SATA2	0x0055