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Input: serio - add helper macro for serio_driver boilerplate 

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

Based on work done by Lars-Peter Clausen <lars@metafoo.de> for
other buses (i2c and spi).

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
This commit is contained in:
Axel Lin 2012-04-03 23:50:15 -07:00 committed by Dmitry Torokhov
parent ae584ca473
commit fa7f86d157
1 changed files with 13 additions and 0 deletions
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13
include/linux/serio.h
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@ -96,6 +96,19 @@ int __must_check __serio_register_driver(struct serio_driver *drv,
void serio_unregister_driver(struct serio_driver *drv);
/**
* module_serio_driver() - Helper macro for registering a serio driver
* @__serio_driver: serio_driver struct
*
* Helper macro for serio 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_serio_driver(__serio_driver) \
module_driver(__serio_driver, serio_register_driver, \
serio_unregister_driver)
static inline int serio_write(struct serio *serio, unsigned char data)
{
if (serio->write)