Re: [RFC PATCH] usb: uas: quiesce SCSI before stopping endpoints on driver unbind

[Jiayi Li]

Hi Alan,

Thank you for the clarification.
> In general, a class driver like uas shouldn't care whether an unbind is
> what you call "driver-only".  It should take the same steps whether it
> can communicate with the device or not.  (Note that the patch's test for
> USB_STATE_NOTATTACHED isn't fully reliable -- there is a window after a
> device is unplugged before the state gets updated.)
I understand that uas should not distinguish a driver-only unbind from a
physical disconnect based on USB_STATE_NOTATTACHED.  I will remove that
test and use the same teardown ordering for all disconnect paths.

I will retest the revised patch and send v2 after allowing some time for
the uas maintainers to comment.

Thanks,
Jiayi