From: Christoph Hellwig <hch@infradead.org>
Date: Fri, 12 Sep 2014 23:00:32 +0000 (-0700)
Subject: scsi: fix regression that accidentally disabled block-based tcq
X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=4b8c6ba616deab7ddf2725f5833cf027a149987f;p=deliverable%2Flinux.git

scsi: fix regression that accidentally disabled block-based tcq

Please try the fix below, looks like the commit broke TCQ for all drivers
using block-level tagging.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---

diff --git a/include/scsi/scsi_tcq.h b/include/scsi/scsi_tcq.h
index cdcc90b07ecb..e64583560701 100644
--- a/include/scsi/scsi_tcq.h
+++ b/include/scsi/scsi_tcq.h
@@ -68,7 +68,7 @@ static inline void scsi_activate_tcq(struct scsi_device *sdev, int depth)
 		return;
 
 	if (!shost_use_blk_mq(sdev->host) &&
-	    blk_queue_tagged(sdev->request_queue))
+	    !blk_queue_tagged(sdev->request_queue))
 		blk_queue_init_tags(sdev->request_queue, depth,
 				    sdev->host->bqt);