linux-kernel - [PATCH 4.4 043/210] scsi: storvsc: fix SRB_STATUS

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Message-Id: <20160410183528.193481583@linuxfoundation.org>
Date:	Sun, 10 Apr 2016 11:34:24 -0700
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, Vitaly Kuznetsov <vkuznets@...hat.com>,
	"K. Y. Srinivasan" <kys@...rosoft.com>,
	"Martin K. Petersen" <martin.petersen@...cle.com>
Subject: [PATCH 4.4 043/210] scsi: storvsc: fix SRB_STATUS_ABORTED handling

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

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

From: Vitaly Kuznetsov <vkuznets@...hat.com>

commit ff06c5ffbcb4ffa542fb80c897be977956fafecc upstream.

Commit 3209f9d780d1 ("scsi: storvsc: Fix a bug in the handling of SRB
status flags") filtered SRB_STATUS_AUTOSENSE_VALID out effectively making
the (SRB_STATUS_ABORTED | SRB_STATUS_AUTOSENSE_VALID) case a dead code. The
logic from this branch (e.g. storvsc_device_scan() call) is still required,
fix the check.

Fixes: 3209f9d780d1 ("scsi: storvsc: Fix a bug in the handling of SRB status flags")
Signed-off-by: Vitaly Kuznetsov <vkuznets@...hat.com>
Acked-by: K. Y. Srinivasan <kys@...rosoft.com>
Signed-off-by: Martin K. Petersen <martin.petersen@...cle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/scsi/storvsc_drv.c |    5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

--- a/drivers/scsi/storvsc_drv.c
+++ b/drivers/scsi/storvsc_drv.c
@@ -889,8 +889,9 @@ static void storvsc_handle_error(struct
 		do_work = true;
 		process_err_fn = storvsc_remove_lun;
 		break;
-	case (SRB_STATUS_ABORTED | SRB_STATUS_AUTOSENSE_VALID):
-		if ((asc == 0x2a) && (ascq == 0x9)) {
+	case SRB_STATUS_ABORTED:
+		if (vm_srb->srb_status & SRB_STATUS_AUTOSENSE_VALID &&
+		    (asc == 0x2a) && (ascq == 0x9)) {
 			do_work = true;
 			process_err_fn = storvsc_device_scan;
 			/*