Hi, Baolin Wang <baolin.w...@linaro.org> writes: > When handling the endpoint interrupt handler, it maybe disable the endpoint > from another core user to set the USB endpoint descriptor pointor to be NULL > while issuing usb_gadget_giveback_request() function to release lock. So it > will be one bug to check the endpoint type by usb_endpoint_xfer_xxx() APIs > with > one NULL USB endpoint descriptor.
too complex, Baolin :-) Can you see if this helps: https://git.kernel.org/cgit/linux/kernel/git/balbi/usb.git/commit/?id=88bf752cfb55e57a78e27c931c9fef63240c739a The only situation when that can happen is while we drop our lock on dwc3_gadget_giveback(). -- balbi
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