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Re: [libvirt] [Qemu-devel] [PATCH for-3.1] s390x: remove 's390-squash-mcss' option



On Wed, Aug 1, 2018 at 9:18 PM Cornelia Huck <cohuck redhat com> wrote:
>
> On Wed, 1 Aug 2018 15:11:23 +0200
> Cornelia Huck <cohuck redhat com> wrote:
>
> > On Wed, 1 Aug 2018 14:54:51 +0200
> > Cornelia Huck <cohuck redhat com> wrote:
> >
> > > On Wed, 1 Aug 2018 18:21:27 +0800
> > > Fam Zheng <famz redhat com> wrote:
> > >
> > > > On Tue, 07/24 11:24, Cornelia Huck wrote:
> > > > > diff --git a/hw/s390x/css-bridge.c b/hw/s390x/css-bridge.c
> > > > > index a02d708239..1bd6c8b458 100644
> > > > > --- a/hw/s390x/css-bridge.c
> > > > > +++ b/hw/s390x/css-bridge.c
> > > > > @@ -106,7 +106,6 @@ VirtualCssBus *virtual_css_bus_init(void)
> > > > >      /* Create bus on bridge device */
> > > > >      bus = qbus_create(TYPE_VIRTUAL_CSS_BUS, dev, "virtual-css");
> > > > >      cbus = VIRTUAL_CSS_BUS(bus);
> > > >
> > > > Not used now?
> > > >
> > > > Fam
> > >
> > > Indeed, we can ditch the cbus variable.
> >
> > ...or not :) We still need it for the return value, which is processed
> > in ccw_init(). We could change the return code of the function to
> > BusState, but I'm not sure it is worth the hassle.
>
> ...but we can indeed get rid of the cbus and qbus variables in
> s390_ccw_realize().

I got this from a patchew.org test (make docker-test-clang ubuntu):

/tmp/qemu-test/src/hw/s390x/3270-ccw.c:103:20: error: unused variable
'cbus' [-Werror,-Wunused-variable]
    VirtualCssBus *cbus = VIRTUAL_CSS_BUS(qbus);
                   ^
1 error generated.
/tmp/qemu-test/src/rules.mak:69: recipe for target 'hw/s390x/3270-ccw.o' failed


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