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uas: improve abort handler

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Two changes.  First we check whenever the request is linked in the work
list and if so take it out.  Second check whenever the command is
actually in flight before asking the device to cancel it via task
management, and in case it isn't just zap the data urbs and finish it.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Gerd Hoffmann 2012-11-30 11:54:43 +01:00 committed by Greg Kroah-Hartman
parent efefecf33a
commit 5d390403fe
1 changed files with 17 additions and 2 deletions
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19
drivers/usb/storage/uas.c
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@ -715,8 +715,23 @@ static int uas_eh_abort_handler(struct scsi_cmnd *cmnd)
uas_log_cmd_state(cmnd, __func__);
spin_lock_irqsave(&devinfo->lock, flags);
cmdinfo->state |= COMMAND_ABORTED;
spin_unlock_irqrestore(&devinfo->lock, flags);
ret = uas_eh_task_mgmt(cmnd, "ABORT TASK", TMF_ABORT_TASK);
if (cmdinfo->state & IS_IN_WORK_LIST) {
spin_lock(&uas_work_lock);
list_del(&cmdinfo->list);
cmdinfo->state &= ~IS_IN_WORK_LIST;
spin_unlock(&uas_work_lock);
}
if (cmdinfo->state & COMMAND_INFLIGHT) {
spin_unlock_irqrestore(&devinfo->lock, flags);
ret = uas_eh_task_mgmt(cmnd, "ABORT TASK", TMF_ABORT_TASK);
} else {
spin_unlock_irqrestore(&devinfo->lock, flags);
uas_unlink_data_urbs(devinfo, cmdinfo);
spin_lock_irqsave(&devinfo->lock, flags);
uas_try_complete(cmnd, __func__);
spin_unlock_irqrestore(&devinfo->lock, flags);
ret = SUCCESS;
}
return ret;
}