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Date:	Wed,  9 Jul 2014 23:33:52 -0700
From:	"K. Y. Srinivasan" <kys@...rosoft.com>
To:	linux-kernel@...r.kernel.org, devel@...uxdriverproject.org,
	ohering@...e.com, jbottomley@...allels.com, hch@...radead.org,
	jasowang@...hat.com, apw@...onical.com, linux-scsi@...r.kernel.org
Cc:	"K. Y. Srinivasan" <kys@...rosoft.com>, <stable@...r.kernel.org>
Subject: [PATCH V2 8/8] drivers: scsi: storvsc: Correctly handle TEST_UNIT_READY failure

On some Windows hosts on FC SANs, TEST_UNIT_READY can return SRB_STATUS_ERROR.
Correctly handle this.

In this version of the patch I have addressed comments from
Christoph Hellwig <hch@...radead.org>

Signed-off-by: K. Y. Srinivasan <kys@...rosoft.com>
Cc: <stable@...r.kernel.org>
---
 drivers/scsi/storvsc_drv.c |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)

diff --git a/drivers/scsi/storvsc_drv.c b/drivers/scsi/storvsc_drv.c
index 84b9b39..6fed0dd 100644
--- a/drivers/scsi/storvsc_drv.c
+++ b/drivers/scsi/storvsc_drv.c
@@ -1020,6 +1020,13 @@ static void storvsc_handle_error(struct vmscsi_request *vm_srb,
 		case ATA_12:
 			set_host_byte(scmnd, DID_PASSTHROUGH);
 			break;
+		/*
+		 * On Some Windows hosts TEST_UNIT_READY command can return
+		 * SRB_STATUS_ERROR, let the upper level code deal with it
+		 * based on the sense information.
+		 */
+		case TEST_UNIT_READY:
+			break;
 		default:
 			set_host_byte(scmnd, DID_TARGET_FAILURE);
 		}
-- 
1.7.4.1

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