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| author |   Tobias Klauser <tklauser@distanz.ch> | 2014-07-09 18:09:55 +0200 |
|---|---|---|
| committer |   Felipe Balbi <balbi@ti.com> | 2014-07-10 08:36:52 -0500 |
| commit | 7ec3ea181d8cffb669982d79664f119ef6a71fc3 (patch) | |
| tree | 1b21a6414f8be7bdc97d7a63ec2a6858942a2c05 /include/linux/usb | |
| parent | usb: gadget: f_fs: OS descriptors support (diff) | |
| download | linux-dev-7ec3ea181d8cffb669982d79664f119ef6a71fc3.tar.xz linux-dev-7ec3ea181d8cffb669982d79664f119ef6a71fc3.zip | |
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: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'include/linux/usb')
| -rw-r--r-- | include/linux/usb/composite.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/include/linux/usb/composite.h b/include/linux/usb/composite.h index 7373203140e7..c330f5ef42cf 100644 --- a/include/linux/usb/composite.h +++ b/include/linux/usb/composite.h @@ -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); |