[SCSI] bfa: protect idr using bfad_mutex
idr is a global resource, protect it with global bfad_mutex.
Signed-off-by: Jing Huang <huangj@brocade.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
diff --git a/drivers/scsi/bfa/bfad_drv.h b/drivers/scsi/bfa/bfad_drv.h
index 0639aed..6c920c1 100644
--- a/drivers/scsi/bfa/bfad_drv.h
+++ b/drivers/scsi/bfa/bfad_drv.h
@@ -293,5 +293,6 @@
extern int bfa_lun_queue_depth;
extern int bfad_supported_fc4s;
extern int bfa_linkup_delay;
+extern struct mutex bfad_mutex;
#endif /* __BFAD_DRV_H__ */