On Wed, Sep 28, 2016 at 06:42:50PM +0800, Peter Xu wrote:

[...]

> > > @@ -341,6 +351,7 @@ static void pci_edu_realize(PCIDevice *pdev, Error 
> > > **errp)
> > >                         edu, QEMU_THREAD_JOINABLE);
> > >  
> > >      pci_config_set_interrupt_pin(pci_conf, 1);
> > > +    msi_init(pdev, 0, 1, false, false, errp);
> > 
> > msi_init(pdev, 0, 1, false, false, &local_err);
> > if (local_err) {
> >     error_propagate(errp, local_err);
> >     return;
> > }
> 
> Could I ask why we need the local_err?

I think I understand now. For this case, I beliveve I could also use:

  if (msi_init(..., errp)) {
      return;
  }

Will fix. Thanks,

-- peterx

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