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driver core: add helper macro for platform_driver_probe() boilerplate 

For simple modules that contain a single platform_driver without any
additional setup code then ends up being a block of duplicated
boilerplate.  This patch adds a new macro,
module_platform_driver_probe(), which replaces the
module_init()/module_exit() registrations with template functions.

This macro use the same idea of module_platform_driver().

This macro is useful to stop the misuse of module_platform_driver() for
removing the platform_driver_probe() boilerplate.

Signed-off-by: Fabio Porcedda <fabio.porcedda@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Fabio Porcedda 2013-01-09 12:15:26 +01:00 committed by Greg Kroah-Hartman
parent 53a9c87e7e
commit bab734fcdf
1 changed files with 18 additions and 0 deletions
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18
include/linux/platform_device.h
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@ -204,6 +204,24 @@ static inline void platform_set_drvdata(struct platform_device *pdev, void *data
module_driver(__platform_driver, platform_driver_register, \
platform_driver_unregister)
/* module_platform_driver_probe() - Helper macro for drivers that don't 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_platform_driver_probe(__platform_driver, __platform_probe) \
static int __init __platform_driver##_init(void) \
{ \
return platform_driver_probe(&(__platform_driver), \
__platform_probe); \
} \
module_init(__platform_driver##_init); \
static void __exit __platform_driver##_exit(void) \
{ \
platform_driver_unregister(&(__platform_driver)); \
} \
module_exit(__platform_driver##_exit);
extern struct platform_device *platform_create_bundle(struct platform_driver *driver,
int (*probe)(struct platform_device *),
struct resource *res, unsigned int n_res,