From: K. Y. Srinivasan <kys@microsoft.com>
Date: Fri, 1 May 2015 18:03:02 +0000 (-0700)
Subject: storvsc: Set the SRB flags correctly when no data transfer is needed
X-Git-Tag: v3.18.15~14
X-Git-Url: http://git.hungrycats.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=65c686d9472936d333532e9f85c4ff35d65b722c;p=linux

storvsc: Set the SRB flags correctly when no data transfer is needed

[ Upstream commit dc45708ca9988656d706940df5fd102672c5de92 ]

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@vger.kernel.org>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Reviewed-by: Long Li <longli@microsoft.com>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
---

diff --git a/drivers/scsi/storvsc_drv.c b/drivers/scsi/storvsc_drv.c
index 4534d9debcdc..e511e3406cfa 100644
--- a/drivers/scsi/storvsc_drv.c
+++ b/drivers/scsi/storvsc_drv.c
@@ -1623,8 +1623,7 @@ 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;
 	}