usb: dwc3: avoid NULL access of usb_gadget_driver
we found crash in dwc3_disconnect_gadget(), it is because dwc->gadget_driver become NULL before async access. 7dc0c55e ('USB: UDC core: Add udc_async_callbacks gadget op') suggest a common way to avoid such kind of issue. this change implment the callback in dwc3 and change related functions which have callback to usb gadget driver. Acked-by:Alan Stern <stern@rowland.harvard.edu> Signed-off-by:
Linyu Yuan <linyyuan@codeaurora.org> Link: https://lore.kernel.org/r/20210629015118.7944-1-linyyuan@codeaurora.org Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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