[SCSI] qla2xxx: Clear drive active CRB register when not in use.

The CRB drive active register is cleared when driver is unloaded
or when driver enters failed state.

Signed-off-by: Giridhar Malavali <giridhar.malavali@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c
index be1a8fc..c345ba7 100644
--- a/drivers/scsi/qla2xxx/qla_os.c
+++ b/drivers/scsi/qla2xxx/qla_os.c
@@ -2402,6 +2402,10 @@
 	scsi_host_put(base_vha->host);
 
 	if (IS_QLA82XX(ha)) {
+		qla82xx_idc_lock(ha);
+		qla82xx_clear_drv_active(ha);
+		qla82xx_idc_unlock(ha);
+
 		iounmap((device_reg_t __iomem *)ha->nx_pcibase);
 		if (!ql2xdbwr)
 			iounmap((device_reg_t __iomem *)ha->nxdb_wr_ptr);