Messages in this thread | | | Date | Mon, 12 May 2008 15:30:05 -0700 | From | Gary Hade <> | Subject | Re: [PATCH] PCI: boot parameter to avoid expansion ROM memory allocation |
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On Mon, May 12, 2008 at 02:43:44PM -0700, Yinghai Lu wrote: > On Mon, May 12, 2008 at 1:57 PM, Gary Hade <garyhade@us.ibm.com> wrote: <snip> > > --- linux-2.6.26-rc2/arch/x86/pci/common.c.orig 2008-05-12 10:59:58.000000000 -0700 > > +++ linux-2.6.26-rc2/arch/x86/pci/common.c 2008-05-12 11:22:05.000000000 -0700 > > @@ -121,6 +121,21 @@ void __init dmi_check_skip_isa_align(voi > > dmi_check_system(can_skip_pciprobe_dmi_table); > > } > > > > +static void __devinit pcibios_fixup_device_resources(struct pci_dev *dev) > > +{ > > + struct resource *rom_r = &dev->resource[PCI_ROM_RESOURCE]; > > + > > + if (pci_probe & PCI_NOASSIGN_ROMS) { > > + if (rom_r->parent) > > + return; > > + if (rom_r->start) { > > + /* we deal with BIOS assigned ROM later */ > > + return; > > + } > > + rom_r->start = rom_r->end = rom_r->flags = 0; > > + } > > +} > > + > > /* > > * Called after each bus is probed, but before its children > > * are examined. > > @@ -128,7 +143,11 @@ void __init dmi_check_skip_isa_align(voi > > > > void __devinit pcibios_fixup_bus(struct pci_bus *b) > > { > > + struct pci_dev *dev; > > + > > pci_read_bridge_bases(b); > > + list_for_each_entry(dev, &b->devices, bus_list) > > + pcibios_fixup_device_resources(dev); > > } > > or put check > + if (pci_probe & PCI_NOASSIGN_ROMS) { > > out of loop?
I could certainly do that but I had intended that the new pcibios_fixup_device_resources function act as a container where other kinds of fixups could be added later. Do you (or others) think the additional cycles consumed by this approach are an issue here?
Thanks, Gary
-- Gary Hade System x Enablement IBM Linux Technology Center 503-578-4503 IBM T/L: 775-4503 garyhade@us.ibm.com http://www.ibm.com/linux/ltc
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