On Fri, 2007-01-19 at 12:46 -0700, Bjorn Helgaas wrote:
> On Thursday 18 January 2007 18:12, Shaohua Li wrote:
> > > +device_initcall(acpi_reserve_resources);
> > Will this be called before PCI assigned resources to PCI devices? We use
> > fs_initcall in motherboard to avoid PCI devices use motherboard's
> > resources before.
> 
> I think we're OK.  Here's the current order:
> 
>   pnp_system_init            fs_initcall       drivers/pnp/system.c
>   pcibios_assign_resources   fs_initcall       arch/i386/pci/i386.c
>   acpi_reserve_resources     device_initcall   drivers/acpi/osl.c
> 
> So pnp_system_init() will reserve all the motherboard resources before
> the PCI resources are assigned.  What do you think?
In this way, we could just remove acpi_reserve_resources as pci already
assigns resources to pci devices. The concern is motherboard might not
list all acpi resources in its _CRS, but I don't know if there are such
BIOS. Microsoft seems to reserve motherboard resources in the same way.
Maybe we could just remove acpi_reserve_resources and give it a spin in
-mm to see if anybody complains.

Thanks,
Shaohua
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