linux-kernel - [PATCH 3.12 030/111] storvsc: Set the SRB flags correctly when no data transfer is needed

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Message-Id: <5ad7463fd6bf6187f15324c42337d9a5fbf2a1e9.1433943052.git.jslaby@suse.cz>
Date:	Wed, 10 Jun 2015 17:26:19 +0200
From:	Jiri Slaby <jslaby@...e.cz>
To:	stable@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org,
	"K. Y. Srinivasan" <kys@...rosoft.com>,
	James Bottomley <JBottomley@...n.com>,
	Jiri Slaby <jslaby@...e.cz>
Subject: [PATCH 3.12 030/111] storvsc: Set the SRB flags correctly when no data transfer is needed

From: "K. Y. Srinivasan" <kys@...rosoft.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit dc45708ca9988656d706940df5fd102672c5de92 upstream.

Set the SRB flags correctly when there is no data transfer.  Without this
change some IHV drivers will fail valid commands such as TEST_UNIT_READY.

Cc: <stable@...r.kernel.org>
Signed-off-by: K. Y. Srinivasan <kys@...rosoft.com>
Reviewed-by: Long Li <longli@...rosoft.com>
Signed-off-by: James Bottomley <JBottomley@...n.com>
Signed-off-by: Jiri Slaby <jslaby@...e.cz>
---
 drivers/scsi/storvsc_drv.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/scsi/storvsc_drv.c b/drivers/scsi/storvsc_drv.c
index 97892f258043..3bb6646bb406 100644
--- a/drivers/scsi/storvsc_drv.c
+++ b/drivers/scsi/storvsc_drv.c
@@ -1625,8 +1625,7 @@ static int storvsc_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *scmnd)
 		break;
 	default:
 		vm_srb->data_in = UNKNOWN_TYPE;
-		vm_srb->win8_extension.srb_flags |= (SRB_FLAGS_DATA_IN |
-						     SRB_FLAGS_DATA_OUT);
+		vm_srb->win8_extension.srb_flags |= SRB_FLAGS_NO_DATA_TRANSFER;
 		break;
 	}
 
-- 
2.4.2

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