Commit 7c92784a authored Nov 16, 2011 by Lars-Peter Clausen Committed by Greg Kroah-Hartman Nov 17, 2011

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>

parent 907d0ed1

include/linux/i2c.h

+13 −0

Original line number	Diff line number	Diff line
		@@ -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__ */

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