[src/trunk]: src/sys/dev Remove dead codes. chan will never be NULL in SIMPLE...

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

details:   https://anonhg.NetBSD.org/src/rev/a462386335ac
branches:  trunk
changeset: 355652:a462386335ac
user:      isaki <isaki%NetBSD.org@localhost>
date:      Tue Aug 08 05:58:12 2017 +0000

description:
Remove dead codes. chan will never be NULL in SIMPLEQ_FOREACH.

diffstat:

 sys/dev/audio.c |  16 ++--------------
 1 files changed, 2 insertions(+), 14 deletions(-)

diffs (58 lines):

diff -r 75a6cc10cd24 -r a462386335ac sys/dev/audio.c
--- a/sys/dev/audio.c   Tue Aug 08 05:54:14 2017 +0000
+++ b/sys/dev/audio.c   Tue Aug 08 05:58:12 2017 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: audio.c,v 1.390 2017/08/08 05:54:14 isaki Exp $        */
+/*     $NetBSD: audio.c,v 1.391 2017/08/08 05:58:12 isaki Exp $        */
 
 /*-
  * Copyright (c) 2016 Nathanial Sloss <nathanialsloss%yahoo.com.au@localhost>
@@ -148,7 +148,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: audio.c,v 1.390 2017/08/08 05:54:14 isaki Exp $");
+__KERNEL_RCSID(0, "$NetBSD: audio.c,v 1.391 2017/08/08 05:58:12 isaki Exp $");
 
 #ifdef _KERNEL_OPT
 #include "audio.h"
@@ -927,9 +927,6 @@
 
        /* free resources */
        SIMPLEQ_FOREACH(chan, &sc->sc_audiochan, entries) {
-               if (chan == NULL)
-                       break;
-
                if (chan->chan == MIXER_INUSE)
                        continue;
                audio_free_ring(sc, &chan->vc->sc_mpr);
@@ -938,9 +935,6 @@
        audio_free_ring(sc, &sc->sc_pr);
        audio_free_ring(sc, &sc->sc_rr);
        SIMPLEQ_FOREACH(chan, &sc->sc_audiochan, entries) {
-               if (chan == NULL)
-                       break;
-
                if (chan->chan == MIXER_INUSE)
                        continue;
                audio_destroy_pfilters(chan->vc);
@@ -3710,9 +3704,6 @@
                if (!sc->sc_opens)
                        break;          /* ignore interrupt if not open */
 
-               if (chan == NULL)
-                       break;
-
                if (chan == SIMPLEQ_FIRST(&sc->sc_audiochan))
                        continue;
 
@@ -3927,9 +3918,6 @@
                if (!sc->sc_opens)
                        break;          /* ignore interrupt if not open */
 
-               if (chan == NULL)
-                       break;
-
                if (chan == SIMPLEQ_FIRST(&sc->sc_audiochan))
                        continue;