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I2C: Add helper macro for i2c_driver boilerplate 

This patch introduces the module_i2c_driver macro which is a convenience macro
for I2C driver modules similar to module_platform_driver. It is intended to be
used by drivers which init/exit section does nothing but register/unregister
the I2C driver. By using this macro it is possible to eliminate a few lines of
boilerplate code per I2C driver.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Jonathan Cameron <jic23@cam.ac.uk>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
Acked-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Lars-Peter Clausen 2011-11-16 10:13:36 +01:00 committed by Greg Kroah-Hartman
parent 907d0ed1c8
commit 7c92784a54
1 changed files with 13 additions and 0 deletions
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13
include/linux/i2c.h
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@ -485,6 +485,19 @@ static inline int i2c_adapter_id(struct i2c_adapter *adap)
{
return adap->nr;
}
/**
* module_i2c_driver() - Helper macro for registering a I2C driver
* @__i2c_driver: i2c_driver struct
*
* Helper macro for I2C drivers which do not do anything special in module
* init/exit. This eliminates a lot of boilerplate. Each module may only
* use this macro once, and calling it replaces module_init() and module_exit()
*/
#define module_i2c_driver(__i2c_driver) \
module_driver(__i2c_driver, i2c_add_driver, \
i2c_del_driver)
#endif /* I2C */
#endif /* __KERNEL__ */