USB: fix usb_reset_device and usb_reset_composite_device(take 3)
This patch renames the existing usb_reset_device in hub.c to
usb_reset_and_verify_device and renames the existing
usb_reset_composite_device to usb_reset_device. Also the new
usb_reset_and_verify_device does't need to be EXPORTED .
The idea of the patch is that external interface driver
should warn the other interfaces' driver of the same
device before and after reseting the usb device. One interface
driver shoud call _old_ usb_reset_composite_device instead of
_old_ usb_reset_device since it can't assume the device contains
only one interface. The _old_ usb_reset_composite_device
is safe for single interface device also. we rename the two
functions to make the change easily.
This patch is under guideline from Alan Stern.
Signed-off-by: Ming Lei <tom.leiming@gmail.com>
diff --git a/include/linux/usb.h b/include/linux/usb.h
index c74cc64..3cc8db5 100644
--- a/include/linux/usb.h
+++ b/include/linux/usb.h
@@ -497,7 +497,6 @@
/* USB port reset for device reinitialization */
extern int usb_reset_device(struct usb_device *dev);
-extern int usb_reset_composite_device(struct usb_device *dev);
extern struct usb_device *usb_find_device(u16 vendor_id, u16 product_id);
@@ -957,9 +956,9 @@
* @resume: Called when the device is being resumed by the system.
* @reset_resume: Called when the suspended device has been reset instead
* of being resumed.
- * @pre_reset: Called by usb_reset_composite_device() when the device
+ * @pre_reset: Called by usb_reset_device() when the device
* is about to be reset.
- * @post_reset: Called by usb_reset_composite_device() after the device
+ * @post_reset: Called by usb_reset_device() after the device
* has been reset
* @id_table: USB drivers use ID table to support hotplugging.
* Export this with MODULE_DEVICE_TABLE(usb,...). This must be set