Re: [PATCH 04/13] arm: drop an obsolete ifdef with the removed config PCI_HOST_ITE8152

[Lukas Bulwahn]

On Thu, Oct 28, 2021 at 5:35 PM Russell King (Oracle)
<linux@xxxxxxxxxxxxxxx> wrote:
>
> On Thu, Oct 28, 2021 at 04:46:38PM +0200, Arnd Bergmann wrote:
> > On Thu, Oct 28, 2021 at 4:19 PM Lukas Bulwahn <lukas.bulwahn@xxxxxxxxx> wrote:
> > >
> > > Commit 6da5238fa384 ("ARM: 8993/1: remove it8152 PCI controller driver")
> > > removes the config PCI_HOST_ITE8152, but left a dangling obsolete ifndef
> > > in ./arch/arm/kernel/bios32.c.
> > >
> > > Hence, ./scripts/checkkconfigsymbols.py warns:
> > >
> > > PCI_HOST_ITE8152
> > > Referencing files: arch/arm/kernel/bios32.c
> > >
> > > Remove this obsolete ifndef.
> > >
> > > Signed-off-by: Lukas Bulwahn <lukas.bulwahn@xxxxxxxxx>
> >
> > Reviewed-by: Arnd Bergmann <arnd@xxxxxxxx>
> >
> > I wonder if we should just remove this function and use the
> > (non-empty) default version instead.
> >
> > 96c5590058d7 ("PCI: Pull PCI 'latency timer' setup up into the core")
> > introduced that generic version, and I suspect the arm version
> > was left out by mistake, but it's not clear from that patch.
>
> That was because PCI_HOST_ITE8152 needed something different from the
> "do nothing" default (setting the PCI latency timer to default to 64
> as the new generic code did.)
>

So, can we just drop the empty pcibios_set_master() function in
bios32.c and the pci handling will now (after the removal of
PCI_HOST_ITE8152) just do The Right Thing(TM)?

If you can confirm that, I will send an updated patch here.

Thanks,

Lukas