qla2xxx: Limit querying to supported mailbox-registers while reading FW state.

Pre-ISP24xx chips have dedicated uses for mailbox 4 and 5 which
software should typically not query nor update.

Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

1 files changed, 10 insertions, 5 deletions

diff --git a/drivers/scsi/qla2xxx/qla_mbx.c b/drivers/scsi/qla2xxx/qla_mbx.c
index 779ce14e9a2a..fe69f3057671 100644
--- a/drivers/scsi/qla2xxx/qla_mbx.c
+++ b/drivers/scsi/qla2xxx/qla_mbx.c
@@ -1267,17 +1267,22 @@ qla2x00_get_firmware_state(scsi_qla_host_t *vha, uint16_t *states)
 
         mcp->mb[0] = MBC_GET_FIRMWARE_STATE;
         mcp->out_mb = MBX_0;
-        mcp->in_mb = MBX_5|MBX_4|MBX_3|MBX_2|MBX_1|MBX_0;
+        if (IS_FWI2_CAPABLE(vha->hw))
+                mcp->in_mb = MBX_5|MBX_4|MBX_3|MBX_2|MBX_1|MBX_0;
+        else
+                mcp->in_mb = MBX_1|MBX_0;
         mcp->tov = MBX_TOV_SECONDS;
         mcp->flags = 0;
         rval = qla2x00_mailbox_command(vha, mcp);
 
         /* Return firmware states. */
         states[0] = mcp->mb[1];
-        states[1] = mcp->mb[2];
-        states[2] = mcp->mb[3];
-        states[3] = mcp->mb[4];
-        states[4] = mcp->mb[5];
+        if (IS_FWI2_CAPABLE(vha->hw)) {
+                states[1] = mcp->mb[2];
+                states[2] = mcp->mb[3];
+                states[3] = mcp->mb[4];
+                states[4] = mcp->mb[5];
+        }
 
         if (rval != QLA_SUCCESS) {
                 /*EMPTY*/