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

------------------

From: "K. Y. Srinivasan" <k...@microsoft.com>

commit 3533f8603d28b77c62d75ec899449a99bc6b77a1 upstream.

On some Windows hosts on FC SANs, TEST_UNIT_READY can return SRB_STATUS_ERROR.
Correctly handle this. Note that there is sufficient sense information to
support scsi error handling even in this case.

Signed-off-by: K. Y. Srinivasan <k...@microsoft.com>
Reviewed-by: Hannes Reinecke <h...@suse.de>
Signed-off-by: Christoph Hellwig <h...@lst.de>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>

---
 drivers/scsi/storvsc_drv.c |    7 +++++++
 1 file changed, 7 insertions(+)

--- a/drivers/scsi/storvsc_drv.c
+++ b/drivers/scsi/storvsc_drv.c
@@ -1018,6 +1018,13 @@ static void storvsc_handle_error(struct
                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);
                }


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