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authorTobias Klauser <tklauser@distanz.ch>2014-07-09 18:09:55 +0200
committerFelipe Balbi <balbi@ti.com>2014-07-10 08:36:52 -0500
commit7ec3ea181d8cffb669982d79664f119ef6a71fc3 (patch)
tree1b21a6414f8be7bdc97d7a63ec2a6858942a2c05 /include/linux/usb
parentf0175ab51993d2dc2728e7b22a16ffb0c8f4cfa0 (diff)
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.h15
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);