Re: [PATCH] usb: dwc3: avoid NULL access of usb_gadget_driver
From: Alan Stern <stern@rowland.harvard.edu>
Date: 2021-06-29 01:36:20
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On Tue, Jun 29, 2021 at 08:20:28AM +0800, Linyu Yuan wrote:
we found crash in dwc3_disconnect_gadget(),
it is because dwc->gadget_driver become NULL before async access.
7dc0c55e9f30 ('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 UDC core.
Signed-off-by: Linyu Yuan <redacted>
---In general this looks very good, all nice and simple. But it doesn't cover the reset callback (dwc3_reset_gadget). Alan Stern