2 files changed, 19 insertions, 1 deletions

diff --git a/include/linux/i2c.h b/include/linux/i2c.h
index 57d41b0abce2..7b40cda57a70 100644
--- a/include/linux/i2c.h
+++ b/include/linux/i2c.h
@@ -361,6 +361,24 @@ static inline void i2c_set_adapdata(struct i2c_adapter *dev, void *data)
         dev_set_drvdata(&dev->dev, data);
 }
 
+/**
+ * i2c_lock_adapter - Prevent access to an I2C bus segment
+ * @adapter: Target I2C bus segment
+ */
+static inline void i2c_lock_adapter(struct i2c_adapter *adapter)
+{
+        mutex_lock(&adapter->bus_lock);
+}
+
+/**
+ * i2c_unlock_adapter - Reauthorize access to an I2C bus segment
+ * @adapter: Target I2C bus segment
+ */
+static inline void i2c_unlock_adapter(struct i2c_adapter *adapter)
+{
+        mutex_unlock(&adapter->bus_lock);
+}
+
 /*flags for the client struct: */
 #define I2C_CLIENT_PEC  0x04            /* Use Packet Error Checking */
 #define I2C_CLIENT_TEN  0x10            /* we have a ten bit chip address */
diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h
index b0f0f3851cd4..9ceb392cb984 100644
--- a/include/linux/pci_ids.h
+++ b/include/linux/pci_ids.h
@@ -543,7 +543,7 @@
 #define PCI_DEVICE_ID_AMD_8131_BRIDGE   0x7450
 #define PCI_DEVICE_ID_AMD_8131_APIC     0x7451
 #define PCI_DEVICE_ID_AMD_8132_BRIDGE   0x7458
-#define PCI_DEVICE_ID_AMD_SB900_SMBUS   0x780b
+#define PCI_DEVICE_ID_AMD_HUDSON2_SMBUS 0x780b
 #define PCI_DEVICE_ID_AMD_CS5535_IDE    0x208F
 #define PCI_DEVICE_ID_AMD_CS5536_ISA    0x2090
 #define PCI_DEVICE_ID_AMD_CS5536_FLASH  0x2091