Messages in this thread | | | From | <> | Subject | RE: [PATCH] usb: uas: fix usb subsystem hang after power off hub port | Date | Fri, 15 Mar 2019 02:28:13 +0000 |
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Hi,
>> And the return value(-ENODEV) will be returned to error handler. >> uas_eh_device_reset_handler->usb_reset_device -> usb_reset_and_verify_device (return -ENODEV) Then I wrote that commit message that we think even if we ignore "ENODEV" in post reset to avoid hang issue but the error will also be reported to error handler. >> #If ignore an error and the error will not be reported then it is not good. > >Well, what do we do now? Are you saying that the state model SCSI is using is wrong?
No, it is not wrong. But I think we may want to prevend hang by sleep peocess with continuing to take a lock at blk_execute_rq() from usb_unbind_and_rebind_marded_interfaces().
Regards, Kento Kobayashi
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