Messages in this thread | | | From | <> | Subject | RE: [PATCH] usb: uas: fix usb subsystem hang after power off hub port | Date | Mon, 25 Mar 2019 10:21:45 +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().
Could you please you can apply this patch for mainline or not? If not, could you please tell me why you can't allow to apply this patch?
Regards, Kento Kobayashi
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