Re: [Qemu-devel] [PATCH] hw: dead code removal

[Cornelia Huck <cornelia.huck@de.ibm.com>]

On Tue, 21 Mar 2017 13:05:40 +0100
Thomas Huth <thuth@redhat.com> wrote:

> On 20.03.2017 19:00, Anton Volkov wrote:
> > Made functions *_exit in hw/ return void instead of int (they returned 0 all the time)
> > and removed related return value checks
> > 
> > Signed-off-by: Anton Volkov <arvolkov@inbox.ru>
> > ---
> >  hw/audio/hda-codec.c              | 3 +--
> >  hw/audio/intel-hda.c              | 3 +--
> >  hw/audio/intel-hda.h              | 2 +-
> >  hw/char/sclpconsole-lm.c          | 4 ++--
> >  hw/char/sclpconsole.c             | 4 ++--
> >  hw/core/qdev.c                    | 6 +-----
> >  hw/s390x/event-facility.c         | 6 +-----
> >  hw/s390x/virtio-ccw.c             | 7 +++----
> >  hw/s390x/virtio-ccw.h             | 2 +-
> >  hw/usb/dev-smartcard-reader.c     | 3 +--
> >  include/hw/qdev-core.h            | 2 +-
> >  include/hw/s390x/event-facility.h | 2 +-
> >  12 files changed, 16 insertions(+), 28 deletions(-)

> > diff --git a/hw/char/sclpconsole-lm.c b/hw/char/sclpconsole-lm.c
> > index 07d6ebd..fbe5b42 100644
> > --- a/hw/char/sclpconsole-lm.c
> > +++ b/hw/char/sclpconsole-lm.c
> > @@ -318,9 +318,9 @@ static int console_init(SCLPEvent *event)
> >      return 0;
> >  }
> >  
> > -static int console_exit(SCLPEvent *event)
> > +static void console_exit(SCLPEvent *event)
> >  {
> > -    return 0;
> > +    return;
> >  }
> >  
> >  static void console_reset(DeviceState *dev)
> > diff --git a/hw/char/sclpconsole.c b/hw/char/sclpconsole.c
> > index b78f240..644f7cd 100644
> > --- a/hw/char/sclpconsole.c
> > +++ b/hw/char/sclpconsole.c
> > @@ -246,9 +246,9 @@ static void console_reset(DeviceState *dev)
> >     scon->notify = false;
> >  }
> >  
> > -static int console_exit(SCLPEvent *event)
> > +static void console_exit(SCLPEvent *event)
> >  {
> > -    return 0;
> > +    return;
> >  }
> 
> Please avoid a "return;" at the end of a void function, that's just
> superfluous.
> (But in this case, as it has been mentioned by others already, I'd also
> recommend to rather remove the function completely instead of having an
> empty function here)

Yes, let's remove them.