ALSA: ppc/awacs: shut up maybe-uninitialized warning

The awacs sound driver produces a false-positive warning in ppc64_defconfig:

sound/ppc/awacs.c: In function 'snd_pmac_awacs_init':
include/sound/control.h:219:9: warning: 'master_vol' may be used uninitialized in this function [-Wmaybe-uninitialized]

I haven't come up with a good way to rewrite the code to avoid the
warning, so here is a bad one: I initialize the variable before
the conditionall initialization so gcc no longer has to worry about
it.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/sound/ppc/awacs.c b/sound/ppc/awacs.c
index 09da7b5..1468e4b 100644 (file)
--- a/sound/ppc/awacs.c
+++ b/sound/ppc/awacs.c
@@ -991,6 +991,7 @@ snd_pmac_awacs_init(struct snd_pmac *chip)
                if (err < 0)
                        return err;
        }
+       master_vol = NULL;
        if (pm7500)
                err = build_mixers(chip,
                                   ARRAY_SIZE(snd_pmac_awacs_mixers_pmac7500),