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SPI: Add helper macro for spi_driver boilerplate 

This patch introduces the module_spi_driver macro which is a convenience macro
for SPI 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 SPI driver. By using this macro it is possible to eliminate a few lines of
boilerplate code per SPI driver.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Lars-Peter Clausen 2011-11-16 10:13:37 +01:00 committed by Greg Kroah-Hartman
parent 7c92784a54
commit 3acbb0142d
1 changed files with 11 additions and 0 deletions
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11
include/linux/spi/spi.h
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@ -200,6 +200,17 @@ static inline void spi_unregister_driver(struct spi_driver *sdrv)
driver_unregister(&sdrv->driver);
}
/**
* module_spi_driver() - Helper macro for registering a SPI driver
* @__spi_driver: spi_driver struct
*
* Helper macro for SPI 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_spi_driver(__spi_driver) \
module_driver(__spi_driver, spi_register_driver, \
spi_unregister_driver)
/**
* struct spi_master - interface to SPI master controller