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[SCSI] scsi_dh_hp_sw: fix deadlock in start_stop_endio

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The use of blk_execute_rq_nowait() implies __blk_put_request() is needed
in start_stop_endio() rather than blk_put_request() --
blk_finish_request() is called with queue lock already held.

Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
This commit is contained in:
Mike Snitzer
2011-01-25 11:52:17 -05:00
committed by James Bottomley
parent 98cb7e4413
commit 7a1e9d829f
1 changed files with 2 additions and 1 deletions
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drivers/scsi/device_handler/scsi_dh_hp_sw.c
+2 -1
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@@ -225,7 +225,8 @@ static void start_stop_endio(struct request *req, int error)
} }
} }
done: done:
blk_put_request(req); req->end_io_data = NULL;
__blk_put_request(req->q, req);
if (h->callback_fn) { if (h->callback_fn) {
h->callback_fn(h->callback_data, err); h->callback_fn(h->callback_data, err);
h->callback_fn = h->callback_data = NULL; h->callback_fn = h->callback_data = NULL;