usb: gadget: udc: core: update usb_ep_queue() documentation
commit eaa358c779
upstream.
Mention that ->complete() should never be called from within
usb_ep_queue().
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
pull/10/head
parent
aea6c0b4ae
commit
7732495c59
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@ -249,6 +249,9 @@ EXPORT_SYMBOL_GPL(usb_ep_free_request);
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* arranges to poll once per interval, and the gadget driver usually will
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* have queued some data to transfer at that time.
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*
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* Note that @req's ->complete() callback must never be called from
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* within usb_ep_queue() as that can create deadlock situations.
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*
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* Returns zero, or a negative error code. Endpoints that are not enabled
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* report errors; errors will also be
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* reported when the usb peripheral is disconnected.
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