Re: [PATCH] ALSA: make snd_kcontrol_new name a normal string

From: Arnd Bergmann
Date: Mon Oct 26 2020 - 15:03:59 EST


On Mon, Oct 26, 2020 at 6:03 PM Takashi Iwai <tiwai@xxxxxxx> wrote:
> On Mon, 26 Oct 2020 17:52:18 +0100,
> Arnd Bergmann wrote:
> >
> > From: Arnd Bergmann <arnd@xxxxxxxx>
> >
> > When building with W=2, there are lots of warnings about the
> > snd_kcontrol_new name field being an array of 'unsigned char'
> > but initialized to a string:
> >
> > include/sound/soc.h:93:48: warning: pointer targets in initialization of 'const unsigned char *' from 'char *' differ in signedness [-Wpointer-sign]
> >
> > Make it a regular 'char *' to avoid flooding the build log with this.
> >
> > Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
> > Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
>
> I'm fine to apply this, but I thought we agreed to ignore pointer
> signedness intentionally? There are lots of such places and we were
> fed up in the past when gcc complained a lot about those...

I'm only sending fixes for the ones in headers that get included in
a lot of places. There are good reasons for building being able to
build specific drivers or directories with W=2, but it's less helpful
if there are many identical warnings.

Arnd