[PATCH 3.16 32/99] scsi: qla2xxx: Fix mtcp dump collection failure

[Ben Hutchings]

3.16.84-rc1 review patch.  If anyone has any objections, please let me know.

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

From: Quinn Tran <qutran@xxxxxxxxxxx>

commit 641e0efddcbde52461e017136acd3ce7f2ef0c14 upstream.

MTCP dump failed due to MB Reg 10 was picking garbage data from stack
memory.

Fixes: 81178772b636a ("[SCSI] qla2xxx: Implemetation of mctp.")
Link: https://lore.kernel.org/r/20191217220617.28084-14-hmadhani@xxxxxxxxxxx
Signed-off-by: Quinn Tran <qutran@xxxxxxxxxxx>
Signed-off-by: Himanshu Madhani <hmadhani@xxxxxxxxxxx>
Signed-off-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx>
Signed-off-by: Ben Hutchings <ben@xxxxxxxxxxxxxxx>
---
 drivers/scsi/qla2xxx/qla_mbx.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

--- a/drivers/scsi/qla2xxx/qla_mbx.c
+++ b/drivers/scsi/qla2xxx/qla_mbx.c
@@ -5388,9 +5388,8 @@ qla2x00_dump_mctp_data(scsi_qla_host_t *
 	mcp->mb[7] = LSW(MSD(req_dma));
 	mcp->mb[8] = MSW(addr);
 	/* Setting RAM ID to valid */
-	mcp->mb[10] |= BIT_7;
 	/* For MCTP RAM ID is 0x40 */
-	mcp->mb[10] |= 0x40;
+	mcp->mb[10] = BIT_7 | 0x40;
 
 	mcp->out_mb |= MBX_10|MBX_8|MBX_7|MBX_6|MBX_5|MBX_4|MBX_3|MBX_2|MBX_1|
 	    MBX_0;