From ca75d601b5942e8cf5eed68f308be0526d0dac5d Mon Sep 17 00:00:00 2001 From: PrasannaKumar Muralidharan Date: Thu, 25 Aug 2016 22:30:49 +0530 Subject: miscdevice: Add helper macro for misc device boilerplate 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 Signed-off-by: Greg Kroah-Hartman --- include/linux/miscdevice.h | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'include/linux') diff --git a/include/linux/miscdevice.h b/include/linux/miscdevice.h index 543037465973..722698a43d79 100644 --- a/include/linux/miscdevice.h +++ b/include/linux/miscdevice.h @@ -3,6 +3,7 @@ #include #include #include +#include /* * These allocations are managed by device@lanana.org. If you use an @@ -70,6 +71,13 @@ struct miscdevice { extern int misc_register(struct miscdevice *misc); extern void misc_deregister(struct miscdevice *misc); +/* + * Helper macro for drivers that don't do anything special in module init / exit + * call. This helps in eleminating of boilerplate code. + */ +#define module_misc_device(__misc_device) \ + module_driver(__misc_device, misc_register, misc_deregister) + #define MODULE_ALIAS_MISCDEV(minor) \ MODULE_ALIAS("char-major-" __stringify(MISC_MAJOR) \ "-" __stringify(minor)) -- cgit v1.2.3-59-g8ed1b