USB: Add helper macro for usb_driver boilerplate (f3a6a4b6) · Commits · 戴 / test

This patch introduces the module_usb_driver macro which is a convenience macro for USB 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 USB driver. By using this macro it is possible to eliminate a few lines of boilerplate code per USB driver. Based on work done by Lars-Peter Clausen <lars@metafoo.de> for other busses (i2c and spi). Cc: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by:

Greg Kroah-Hartman <gregkh@suse.de>

include/linux/usb.h

+12 −0

Original line number	Diff line number	Diff line
		@@ -953,6 +953,18 @@ extern int usb_register_driver(struct usb_driver , struct module ,

		extern void usb_deregister(struct usb_driver *);

		/**
		* module_usb_driver() - Helper macro for registering a USB driver
		* @__usb_driver: usb_driver struct
		*
		* Helper macro for USB 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_usb_driver(__usb_driver) \
		module_driver(__usb_driver, usb_register, \
		usb_deregister)

		extern int usb_register_device_driver(struct usb_device_driver *,
		struct module *);
		extern void usb_deregister_device_driver(struct usb_device_driver *);

Admin message