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Commit eaa358c7 authored by Felipe Balbi's avatar Felipe Balbi Committed by Greg Kroah-Hartman
Browse files

usb: gadget: udc: core: update usb_ep_queue() documentation 



Mention that ->complete() should never be called from within
usb_ep_queue().

Signed-off-by: default avatarFelipe Balbi <felipe.balbi@linux.intel.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 53d473fc

drivers/usb/gadget/udc/core.c

+3 −0
Original line number Diff line number Diff line
@@ -238,6 +238,9 @@ EXPORT_SYMBOL_GPL(usb_ep_free_request); 
 * arranges to poll once per interval, and the gadget driver usually will

 * have queued some data to transfer at that time.

 *

 * Note that @req's ->complete() callback must never be called from

 * within usb_ep_queue() as that can create deadlock situations.

 *

 * Returns zero, or a negative error code.  Endpoints that are not enabled

 * report errors; errors will also be

 * reported when the usb peripheral is disconnected.