src: Remove obsolete NULL checks

[ozaki-r <ozaki-r%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/00d2dd15862d
branches:  trunk
changeset: 318312:00d2dd15862d
user:      ozaki-r <ozaki-r%NetBSD.org@localhost>
date:      Wed Apr 18 03:47:28 2018 +0000
description:
Remove obsolete NULL checks

diffstat:

 sys/net/if_bridge.c |  22 ++++++++--------------
 1 files changed, 8 insertions(+), 14 deletions(-)

diffs (52 lines):

diff -r 836c961ba1e4 -r 00d2dd15862d sys/net/if_bridge.c
--- a/sys/net/if_bridge.c       Wed Apr 18 01:18:16 2018 +0000
+++ b/sys/net/if_bridge.c       Wed Apr 18 03:47:28 2018 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: if_bridge.c,v 1.149 2018/04/10 07:05:39 ozaki-r Exp $  */
+/*     $NetBSD: if_bridge.c,v 1.150 2018/04/18 03:47:28 ozaki-r Exp $  */
 
 /*
  * Copyright 2001 Wasabi Systems, Inc.
@@ -80,7 +80,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: if_bridge.c,v 1.149 2018/04/10 07:05:39 ozaki-r Exp $");
+__KERNEL_RCSID(0, "$NetBSD: if_bridge.c,v 1.150 2018/04/18 03:47:28 ozaki-r Exp $");
 
 #ifdef _KERNEL_OPT
 #include "opt_bridge_ipf.h"
@@ -181,16 +181,12 @@
 #define        BRIDGE_RTABLE_PRUNE_PERIOD      (5 * 60)
 #endif
 
-#define BRIDGE_RT_LOCK(_sc)    if ((_sc)->sc_rtlist_lock) \
-                                       mutex_enter((_sc)->sc_rtlist_lock)
-#define BRIDGE_RT_UNLOCK(_sc)  if ((_sc)->sc_rtlist_lock) \
-                                       mutex_exit((_sc)->sc_rtlist_lock)
-#define BRIDGE_RT_LOCKED(_sc)  (!(_sc)->sc_rtlist_lock || \
-                                mutex_owned((_sc)->sc_rtlist_lock))
+#define BRIDGE_RT_LOCK(_sc)    mutex_enter((_sc)->sc_rtlist_lock)
+#define BRIDGE_RT_UNLOCK(_sc)  mutex_exit((_sc)->sc_rtlist_lock)
+#define BRIDGE_RT_LOCKED(_sc)  mutex_owned((_sc)->sc_rtlist_lock)
 
 #define BRIDGE_RT_PSZ_PERFORM(_sc) \
-                               if ((_sc)->sc_rtlist_psz != NULL) \
-                                       pserialize_perform((_sc)->sc_rtlist_psz);
+                               pserialize_perform((_sc)->sc_rtlist_psz);
 
 #define BRIDGE_RT_RENTER(__s)  do { __s = pserialize_read_enter(); } while (0)
 #define BRIDGE_RT_REXIT(__s)   do { pserialize_read_exit(__s); } while (0)
@@ -2353,10 +2349,8 @@
 {
 
        kmem_free(sc->sc_rthash, sizeof(*sc->sc_rthash) * BRIDGE_RTHASH_SIZE);
-       if (sc->sc_rtlist_lock)
-               mutex_obj_free(sc->sc_rtlist_lock);
-       if (sc->sc_rtlist_psz)
-               pserialize_destroy(sc->sc_rtlist_psz);
+       mutex_obj_free(sc->sc_rtlist_lock);
+       pserialize_destroy(sc->sc_rtlist_psz);
 }
 
 /*