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miscdevice: Add helper macro for misc device boilerplate

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Many modules call misc_register and misc_deregister in its module init
and exit methods without any additional code. This ends up being
boilerplate. This patch adds helper macro module_misc_device(), that
replaces module_init()/ module_exit() with template functions.

This patch also converts drivers to use new macro.

Change since v1:
Add device.h include in miscdevice.h as module_driver macro was not
available from other include files in some architectures.

Signed-off-by: PrasannaKumar Muralidharan <prasannatsmkumar@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
PrasannaKumar Muralidharan 2016-08-25 22:30:49 +05:30 • committed by Greg Kroah-Hartman
parent 832c8232dd
commit ca75d601b5
7 changed files with 15 additions and 80 deletions
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15
drivers/input/misc/uinput.c
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@ -1013,23 +1013,12 @@ static struct miscdevice uinput_misc = {
.minor = UINPUT_MINOR,
.name = UINPUT_NAME,
};
module_misc_device(uinput_misc);
MODULE_ALIAS_MISCDEV(UINPUT_MINOR);
MODULE_ALIAS("devname:" UINPUT_NAME);
static int __init uinput_init(void)
{
return misc_register(&uinput_misc);
}
static void __exit uinput_exit(void)
{
misc_deregister(&uinput_misc);
}
MODULE_AUTHOR("Aristeu Sergio Rozanski Filho");
MODULE_DESCRIPTION("User level driver support for input subsystem");
MODULE_LICENSE("GPL");
MODULE_VERSION("0.3");
module_init(uinput_init);
module_exit(uinput_exit);