Messages in this thread | | | Date | Mon, 20 Dec 1999 15:12:40 +0000 (GMT) | From | Tim Waugh <> | Subject | SCSI modules bug? (was Re: BUG iomega parport) |
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I've been trying to figure out why ppa and imm both fail to initialise with 2.3.32pre4+. I've traced it this far:
scsi_register_module -> scsi_register_host -> scan_scsis -> scan_scsis_single -> scsi_wait_cmd -> down
In scsi_wait_cmd, we call scsi_do_cmd. To prevent reentrancy, we set host->host_busy and device->device_busy, and then we call scsi_insert_special_cmd, and then q->request_fn (which I think is scsi_request_fn in this case). Unfortunately, scsi_request_fn finds host_busy (and device_busy) non-zero, and so it returns.
Is this intended behaviour? Is something supposed to kick the queue? Or should reentrancy be avoided some other way?
Tim. */
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