[libvirt] [PULL 04/14] audio: -audiodev command line option basic implementation

[Peter Maydell]

On Tue, 12 Mar 2019 at 07:13, Gerd Hoffmann <kraxel at redhat.com> wrote:
>
> From: Kővágó, Zoltán <dirty.ice.hu at gmail.com>
>
> Audio drivers now get an Audiodev * as config paramters, instead of the
> global audio_option structs.  There is some code in audio/audio_legacy.c
> that converts the old environment variables to audiodev options (this
> way backends do not have to worry about legacy options).  It also
> contains a replacement of -audio-help, which prints out the equivalent
> -audiodev based config of the currently specified environment variables.

Hi; Coverity complains (CID 1399706) about this, which isn't
a change in this patch as such, but the code change has
probably caused it to reanalyze:

>
>      if (!done) {
>          driver = audio_driver_lookup("none");
> -        done = !audio_driver_init(s, driver, false);
> +        done = !audio_driver_init(s, driver, false, dev);

Everywhere else we call audio_driver_lookup() we check
whether the return value is NULL before using it,
but here we don't. I guess this is a false positive
because the "none" driver must always exist ?
If so, I can just silence the warning in the coverity UI.

thanks
-- PMM