scsi: qla2xxx: Initialized mailbox to prevent driver load failure

This patch fixes issue with Gen7 adapter in a blade environment where one
of the ports will not be detected by driver. Firmware expects mailbox 11 to
be set or cleared by driver for newer ISP.

Following message is seen in the log file:

[   18.810892] qla2xxx [0000:d8:00.0]-1820:1: **** Failed=102 mb[0]=4005 mb[1]=37 mb[2]=20 mb[3]=8
[   18.819596]  cmd=2 ****

[mkp: typos]

Link: https://lore.kernel.org/r/20191022193643.7076-2-hmadhani@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 1cc6913..4a1f21c 100644 (file)
--- a/drivers/scsi/qla2xxx/qla_mbx.c
+++ b/drivers/scsi/qla2xxx/qla_mbx.c
@@ -702,6 +702,7 @@ qla2x00_execute_fw(scsi_qla_host_t *vha, uint32_t risc_addr)
                mcp->mb[2] = LSW(risc_addr);
                mcp->mb[3] = 0;
                mcp->mb[4] = 0;
+               mcp->mb[11] = 0;
                ha->flags.using_lr_setting = 0;
                if (IS_QLA25XX(ha) || IS_QLA81XX(ha) || IS_QLA83XX(ha) ||
                    IS_QLA27XX(ha) || IS_QLA28XX(ha)) {
@@ -746,7 +747,7 @@ qla2x00_execute_fw(scsi_qla_host_t *vha, uint32_t risc_addr)
                if (ha->flags.exchoffld_enabled)
                        mcp->mb[4] |= ENABLE_EXCHANGE_OFFLD;
 
-               mcp->out_mb |= MBX_4|MBX_3|MBX_2|MBX_1;
+               mcp->out_mb |= MBX_4 | MBX_3 | MBX_2 | MBX_1 | MBX_11;
                mcp->in_mb |= MBX_3 | MBX_2 | MBX_1;
        } else {
                mcp->mb[1] = LSW(risc_addr);