[RFC 2/4] PCI: generic: Add support for ARM64 and MSI(x)

Arnd Bergmann
2014-09-30T18:54:41Z

On Tuesday 30 September 2014 18:48:21 Liviu Dudau wrote:
> > > > > These are the functions I found that refer to pci_sys_data on arm32:
> > > > >
> > > > > pcibios_add_bus
> > > > > pcibios_remove_bus
>
> These are only needed if you want to do per HB processing of the bus
>
> > > > > pcibios_align_resource
>
> mvebu is the only user of this function.
>
> > > > > pci_mmap_page_range
>
> This is only needed when mapping a PCI resource to userspace. Is that your case here?
>
> > > > > pci_domain_nr
> > > > > pci_proc_domain
>
> We have equivalent functionality in the generic patches for those.
>

We clearly don't need those functions for the new drivers, but that's not
the point. The problem is that when you build a kernel that has both
a traditional host bridge driver and a new one in it, you always get those
functions and they get called from the PCI core, with incorrect arguments.

Arnd