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Commit 7ec3ea18 authored by Tobias Klauser's avatar Tobias Klauser Committed by Felipe Balbi
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usb: gadget: Add helper macro for usb_composite_driver boilerplate 



Introduce the module_usb_composite_driver macro as a convenience macro
for USB gadget composite driver modules, similar to module_usb_driver.
It is intended to be used by drivers which init/exit section does
nothing but calling usb_composite_probe/usb_composite_unrregister. By
using this macro it is possible to eliminate a few lines of boilerplate
code per USB gadget composite driver.

Based on f3a6a4b6 ("USB: Add helper macro for usb_driver boilerplate")
which introduced the according macro for USB drivers.

Signed-off-by: default avatarTobias Klauser <tklauser@distanz.ch>
Signed-off-by: default avatarFelipe Balbi <balbi@ti.com>
parent f0175ab5

include/linux/usb/composite.h

+15 −0
Original line number Diff line number Diff line
@@ -386,6 +386,21 @@ struct usb_composite_driver { 


extern int usb_composite_probe(struct usb_composite_driver *driver);

extern void usb_composite_unregister(struct usb_composite_driver *driver);



/**

 * module_usb_composite_driver() - Helper macro for registering a USB gadget

 * composite driver

 * @__usb_composite_driver: usb_composite_driver struct

 *

 * Helper macro for USB gadget composite 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_composite_driver(__usb_composite_driver) \

	module_driver(__usb_composite_driver, usb_composite_probe, \

		       usb_composite_unregister)



extern void usb_composite_setup_continue(struct usb_composite_dev *cdev);

extern int composite_dev_prepare(struct usb_composite_driver *composite,

		struct usb_composite_dev *cdev);