scsi: qla2xxx: Fix mtcp dump collection failure

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

Fixes: 81178772b636a ("[SCSI] qla2xxx: Implemetation of mctp.")
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20191217220617.28084-14-hmadhani@marvell.com
Signed-off-by: Quinn Tran <qutran@marvell.com>
Signed-off-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

diff --git a/drivers/scsi/qla2xxx/qla_mbx.c b/drivers/scsi/qla2xxx/qla_mbx.c
index b7c1108c48e208f2e634309acd84d46b182bd7e3..9e09964f5c0e4ad9819a59c5038036d8a781b294 100644 (file)
--- a/drivers/scsi/qla2xxx/qla_mbx.c
+++ b/drivers/scsi/qla2xxx/qla_mbx.c
@@ -6152,9 +6152,8 @@ qla2x00_dump_mctp_data(scsi_qla_host_t *vha, dma_addr_t req_dma, uint32_t addr,
        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;