[PATCH v4] DRM: add DRM Driver for Samsung SoC EXYNOS4210.

[Konrad Rzeszutek Wilk]

> > > > > +		DRM_ERROR("desired size is bigger then real
> size.\n");
> > > >
> > > > So .. you can't continue by just using the real size instead?
> > > >
> > >
> > > I am afraid I don't understand what you mean but I think that condition
> > is
> > > fine. size is a vm area to user-desired size and you could request
> > mapping
> > > as specific size. so it just check user-requested virtual space region
> > it
> > > bigger than allocated physical memory region to be mapped. if there is
> > my
> > > missing points, I would be happy to you give me your comments. thank
> you.
> > 
> > I meant that you return -EINVAL. But I am wondering if it would be
> > possible
> > to just continue on, but ignore what the user specified.
> > 
> > I think the issue here is that you are outputing the DRM_ERROR and
> > I am not sure if it is that neccessary. Perhaps DRM_DEBUG, but DRM_ERROR
> > just seems a bit.. heavy handed.
> > 
> 
> I thought this condition would be critical issue as user application should
> be terminated. is your wondering if user application could go ahead after
> mmap failed? this is just my view so I would be happy you to give me your
> advice. Thank you.

I think terminating the appliaction is the right thing. But the DRM_ERROR
is not neccessary.