diff options
| author | Jean Delvare <khali@linux-fr.org> | 2010-08-11 18:20:58 +0200 |
|---|---|---|
| committer | Jean Delvare <khali@linux-fr.org> | 2010-08-11 18:20:58 +0200 |
| commit | fe61e07e9ebc890c70d97a1f72ddaad4bee2d848 (patch) | |
| tree | e6ab84f0c09c555899884f2b730d205e3244dd8f /include | |
| parent | V4L/DVB: Use custom I2C probing function mechanism (diff) | |
| download | linux-fe61e07e9ebc890c70d97a1f72ddaad4bee2d848.tar.xz linux-fe61e07e9ebc890c70d97a1f72ddaad4bee2d848.zip | |
i2c: Move adapter locking helpers to i2c-core
Uninline i2c adapter locking helper functions, move them to i2c-core,
and use them in i2c-core itself. The functions are still exported for
external users. This makes future updates to the locking model (which
will be needed for multiplexing support) possible and transparent.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Michael Lawnick <ml.lawnick@gmx.de>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/i2c.h | 20 |
1 files changed, 3 insertions, 17 deletions
diff --git a/include/linux/i2c.h b/include/linux/i2c.h index c8627e453e97..5bf0f4beea31 100644 --- a/include/linux/i2c.h +++ b/include/linux/i2c.h @@ -382,23 +382,9 @@ 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) -{ - rt_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) -{ - rt_mutex_unlock(&adapter->bus_lock); -} +/* Adapter locking functions, exported for shared pin cases */ +void i2c_lock_adapter(struct i2c_adapter *); +void i2c_unlock_adapter(struct i2c_adapter *); /*flags for the client struct: */ #define I2C_CLIENT_PEC 0x04 /* Use Packet Error Checking */ |