For the scsi-mq case, ensure that the request has been started before
returning it from scsi_find_tag(). This is akin to the ->special
check for the non-mq case, it ensures that the request has been setup
and issued.
Signed-off-by: Jens Axboe <ax...@fb.com>
---
include/scsi/scsi_tcq.h | 11 +++++++++--
1 file changed, 9 insertions(+), 2 deletions(-)
diff --git a/include/scsi/scsi_tcq.h b/include/scsi/scsi_tcq.h
index b27977e8aaed..8634cab61aeb 100644
--- a/include/scsi/scsi_tcq.h
+++ b/include/scsi/scsi_tcq.h
@@ -35,8 +35,15 @@ static inline struct scsi_cmnd *scsi_find_tag(struct
scsi_device *sdev, int tag)
struct request *req;
if (tag != SCSI_NO_TAG) {
- if (shost_use_blk_mq(sdev->host))
- return scsi_mq_find_tag(sdev->host, tag);
+ if (shost_use_blk_mq(sdev->host)) {
+ struct scsi_cmnd *scmd;
+
+ scmd = scsi_mq_find_tag(sdev->host, tag);
+ if (blk_mq_request_started(scmd->request))
+ return scmd;
+
+ return NULL;
+ }
req = blk_queue_find_tag(sdev->request_queue, tag);
return req ? (struct scsi_cmnd *)req->special : NULL;
--
1.9.1
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