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: v3.12.44~82
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5ad7463fd6bf6187f15324c42337d9a5fbf2a1e9;p=thirdparty%2Fkernel%2Fstable.git

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

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@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: Jiri Slaby <jslaby@suse.cz>
---

diff --git a/drivers/scsi/storvsc_drv.c b/drivers/scsi/storvsc_drv.c
index 97892f258043f..3bb6646bb4060 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;
 	}