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| author | J. Bruce Fields <bfields@citi.umich.edu> | 2009-11-23 12:34:58 -0500 |
|---|---|---|
| committer | J. Bruce Fields <bfields@citi.umich.edu> | 2009-11-23 12:34:58 -0500 |
| commit | 9b8b317d58084b9a44f6f33b355c4278d9f841fb (patch) | |
| tree | e0df89800bf4301c4017db3cdf04a2056ec1a852 /include/linux/i2c.h | |
| parent | 78c210efdefe07131f91ed512a3308b15bb14e2f (diff) | |
| parent | 648f4e3e50c4793d9dbf9a09afa193631f76fa26 (diff) | |
Merge commit 'v2.6.32-rc8' into HEAD
Diffstat (limited to 'include/linux/i2c.h')
| -rw-r--r-- | include/linux/i2c.h | 18 |
1 files changed, 18 insertions, 0 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 */ |