RE: [PATCH] usb: gadget: composite: dequeue cdev->req before free it in composite_dev_cleanup

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On Thu, 21 Aug 2014, Paul Zimmerman wrote:

> AFAIK, it has always been a requirement that usb_ep_dequeue() release
> the data buffer and call the urb's completion routine before it returns.

Hmmm.  I don't know if that really has been a requirement, but it does 
seem to be true in the UDC drivers I'm familiar with.

> Quite a few of the function drivers depend on that, after the call to
> usb_ep_dequeue() they immediately free the data buffer. So if it's not
> explicitly documented like that, it should be.

Okay, would you like to write a documentation patch?

Alan Stern

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