On Mon, 2019-07-29 at 08:58 +0200, Takashi Iwai wrote:
> On Mon, 29 Jul 2019 06:04:04 +0200,
> Stephen Rothwell wrote:
> > Hi all,
> >
> > After merging the origin tree, today's linux-next build (powerpc
> > allyesconfig) produced this warning:
> >
> > sound/aoa/codecs/onyx.c: In function 'onyx_snd_single_bit_get':
> > sound/aoa/codecs/onyx.c:377:37: warning: 'c' may be used uninitialized in this function [-Wmaybe-uninitialized]
> > ucontrol->value.integer.value[0] = !!(c & mask) ^ polarity;
> > ^~~~~~~~~~~~
> >
> > Introduced by commit
> >
> > f3d9478b2ce4 ("[ALSA] snd-aoa: add snd-aoa")
> >
> > This warning has been around for a long time. It could possibly be
> > suppressed by checking for errors returned by onyx_read_register().
>
> Yes, or simply zero-ing the variable in onyx_read_register(). The
> current code ignores the read error and it's been OK over a decade :)
Yeah, it's pretty weird that it never showed up before. I was wondering
for a minute why I was CC'ed on a sound merge issue :-)
Do you want me to send a patch or just commit something to suppress
this?
johannes
