[src/trunk]: src/sys/dev/clk Make "put" clk func optional

[jmcneill <jmcneill%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/dbb565f9edc2
branches:  trunk
changeset: 448315:dbb565f9edc2
user:      jmcneill <jmcneill%NetBSD.org@localhost>
date:      Wed Jan 30 01:20:47 2019 +0000

description:
Make "put" clk func optional

diffstat:

 sys/dev/clk/clk.c |  7 ++++---
 1 files changed, 4 insertions(+), 3 deletions(-)

diffs (28 lines):

diff -r 0416cc4c7151 -r dbb565f9edc2 sys/dev/clk/clk.c
--- a/sys/dev/clk/clk.c Wed Jan 30 01:19:49 2019 +0000
+++ b/sys/dev/clk/clk.c Wed Jan 30 01:20:47 2019 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: clk.c,v 1.5 2018/06/12 23:08:37 jmcneill Exp $ */
+/* $NetBSD: clk.c,v 1.6 2019/01/30 01:20:47 jmcneill Exp $ */
 
 /*-
  * Copyright (c) 2015 Jared D. McNeill <jmcneill%invisible.ca@localhost>
@@ -27,7 +27,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: clk.c,v 1.5 2018/06/12 23:08:37 jmcneill Exp $");
+__KERNEL_RCSID(0, "$NetBSD: clk.c,v 1.6 2019/01/30 01:20:47 jmcneill Exp $");
 
 #include <sys/param.h>
 #include <sys/sysctl.h>
@@ -196,7 +196,8 @@
 void
 clk_put(struct clk *clk)
 {
-       return clk->domain->funcs->put(clk->domain->priv, clk);
+       if (clk->domain->funcs->put)
+               clk->domain->funcs->put(clk->domain->priv, clk);
 }
 
 u_int