Hi Alan, On Wednesday 08 August 2012 21:31:12 Alan Stern wrote: > On Wed, 8 Aug 2012, Laurent Pinchart wrote: > > I guess it depends on the usb_ep_dequeue() API. The function documentation > > doesn't clearly state whether calling it with an already dequeuing request > > is valid (in which case it should return an error, possibly print a debug > > message, but not a warning/error message) or not (in which case it can be > > very vocal about it, and even WARN_ON()). > > It is valid. It pretty much has to be, because we need to handle the > possibility that two threads might try to cancel the same request at > the same time.
In that case we should fix the UDC drivers to be less vocal when usb_ep_dequeue() is called for a non-queued request. Bhupesh, would you like to send patches for that ? -- Regards, Laurent Pinchart -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
