[src/trunk]: src/sys/dev factor out duplicated code.

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

details:   https://anonhg.NetBSD.org/src/rev/cd2090aa66b3
branches:  trunk
changeset: 819797:cd2090aa66b3
user:      christos <christos%NetBSD.org@localhost>
date:      Sat Dec 17 16:08:29 2016 +0000

description:
factor out duplicated code.

diffstat:

 sys/dev/audio.c |  37 +++++++++++++++++--------------------
 1 files changed, 17 insertions(+), 20 deletions(-)

diffs (78 lines):

diff -r 8da7d63efe6b -r cd2090aa66b3 sys/dev/audio.c
--- a/sys/dev/audio.c   Sat Dec 17 15:27:26 2016 +0000
+++ b/sys/dev/audio.c   Sat Dec 17 16:08:29 2016 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: audio.c,v 1.283 2016/12/17 15:18:28 christos Exp $     */
+/*     $NetBSD: audio.c,v 1.284 2016/12/17 16:08:29 christos 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 1.283 2016/12/17 15:18:28 christos Exp $");
+__KERNEL_RCSID(0, "$NetBSD: audio.c,v 1.284 2016/12/17 16:08:29 christos Exp $");
 
 #include "audio.h"
 #if NAUDIO > 0
@@ -5619,6 +5619,18 @@
        }
 }
 
+static uint8_t *
+find_vchan_vol(struct audio_softc *sc, int d)
+{
+       size_t j, n = (size_t)d / 2;
+       
+       for (size_t i = j = 0; i <= n; i++)
+               if (sc->sc_audiopid[i].pid != -1)
+                       j++;
+
+       return (d & 1) == 0 ?
+           &sc->sc_vchan[j]->sc_swvol : &sc->sc_vchan[j]->sc_recswvol;
+}
 
 static int
 audio_set_port(struct audio_softc *sc, mixer_ctrl_t *mc)
@@ -5630,20 +5642,13 @@
        if (d < 0)
                return sc->hw_if->set_port(sc->hw_hdl, mc);
 
-       size_t j, n = (size_t)d / 2;
-       
-       for (size_t i = j = 0; i <= n; i++)
-               if (sc->sc_audiopid[i].pid != -1)
-                       j++;
-
        uint8_t *level = &mc->un.value.level[AUDIO_MIXER_LEVEL_MONO];
-       uint8_t *vol = (d & 1) == 0 ?
-           &sc->sc_vchan[j]->sc_swvol : &sc->sc_vchan[j]->sc_recswvol;
-
+       uint8_t *vol = find_vchan_vol(sc, d);
        *vol = *level;
        return 0;
 }
 
+
 static int
 audio_get_port(struct audio_softc *sc, mixer_ctrl_t *mc)
 {
@@ -5655,16 +5660,8 @@
        if (d < 0)
                return sc->hw_if->get_port(sc->hw_hdl, mc);
 
-       size_t j, n = (size_t)d / 2;
-       
-       for (size_t i = j = 0; i <= n; i++)
-               if (sc->sc_audiopid[i].pid != -1)
-                       j++;
-
        u_char *level = &mc->un.value.level[AUDIO_MIXER_LEVEL_MONO];
-       uint8_t *vol = (d & 1) == 0 ?
-           &sc->sc_vchan[j]->sc_swvol : &sc->sc_vchan[j]->sc_recswvol;
-
+       uint8_t *vol = find_vchan_vol(sc, d);
        *level = *vol;
        return 0;