[src/trunk]: src/sys/dev remove redundant null check

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

details:   https://anonhg.NetBSD.org/src/rev/2d5387d7b8fb
branches:  trunk
changeset: 349421:2d5387d7b8fb
user:      maya <maya%NetBSD.org@localhost>
date:      Sat Dec 10 16:08:04 2016 +0000

description:
remove redundant null check
allocating with KM_SLEEP can't fail

diffstat:

 sys/dev/audio.c |  8 ++------
 1 files changed, 2 insertions(+), 6 deletions(-)

diffs (36 lines):

diff -r 39afa13cf070 -r 2d5387d7b8fb sys/dev/audio.c
--- a/sys/dev/audio.c   Sat Dec 10 14:13:29 2016 +0000
+++ b/sys/dev/audio.c   Sat Dec 10 16:08:04 2016 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: audio.c,v 1.271 2016/12/09 13:06:02 martin Exp $       */
+/*     $NetBSD: audio.c,v 1.272 2016/12/10 16:08:04 maya 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 1.271 2016/12/09 13:06:02 martin Exp $");
+__KERNEL_RCSID(0, "$NetBSD: audio.c,v 1.272 2016/12/10 16:08:04 maya Exp $");
 
 #include "audio.h"
 #if NAUDIO > 0
@@ -1331,8 +1331,6 @@
        size = min(size, AU_RING_SIZE);
        stream->bufsize = size;
        stream->start = kmem_zalloc(size, KM_SLEEP);
-       if (stream->start == NULL)
-               return ENOMEM;
        frame_size = (param->precision + 7) / 8 * param->channels;
        size = (size / frame_size) * frame_size;
        stream->end = stream->start + size;
@@ -1864,8 +1862,6 @@
                return ENXIO;
 
        sc->sc_vchan[n] = kmem_zalloc(sizeof(struct virtual_channel), KM_SLEEP);
-       if (sc->sc_vchan[n] == NULL)
-               return ENOMEM;
        vc = sc->sc_vchan[n];
 
        vc->sc_open = 0;