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| author | James Morris <jmorris@macbook.(none)> | 2009-12-03 12:03:40 +0530 |
|---|---|---|
| committer | James Morris <jmorris@macbook.(none)> | 2009-12-03 12:03:40 +0530 |
| commit | c84d6efd363a3948eb32ec40d46bab6338580454 (patch) | |
| tree | 3ba7ac46e6626fe8ac843834588609eb6ccee5c6 /include/linux/i2c.h | |
| parent | 7539cf4b92be4aecc573ea962135f246a7a33401 (diff) | |
| parent | 22763c5cf3690a681551162c15d34d935308c8d7 (diff) | |
| download | kernel-crypto-c84d6efd363a3948eb32ec40d46bab6338580454.tar.gz kernel-crypto-c84d6efd363a3948eb32ec40d46bab6338580454.tar.xz kernel-crypto-c84d6efd363a3948eb32ec40d46bab6338580454.zip | |
Merge branch 'master' into next
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 57d41b0abce..7b40cda57a7 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 */ |