On Sat, Mar 10, 2012 at 12:00 AM, Yinghai Lu <yinghai@xxxxxxxxxx> wrote:
> It will call acpi version pci_root_rescan and legacy pci_root_rescan.
>
> Signed-off-by: Yinghai Lu <yinghai@xxxxxxxxxx>
> ---
> arch/x86/pci/common.c | 7 +++++++
> 1 files changed, 7 insertions(+), 0 deletions(-)
>
> diff --git a/arch/x86/pci/common.c b/arch/x86/pci/common.c
> index 2ebdc231..0ec860f 100644
> --- a/arch/x86/pci/common.c
> +++ b/arch/x86/pci/common.c
> @@ -10,6 +10,7 @@
> #include <linux/init.h>
> #include <linux/dmi.h>
> #include <linux/slab.h>
> +#include <linux/pci-acpi.h>
>
> #include <asm/acpi.h>
> #include <asm/segment.h>
> @@ -661,6 +662,12 @@ struct pci_bus * __devinit pci_scan_bus_with_sysdata(int busno)
> return pci_scan_bus_on_node(busno, &pci_root_ops, -1);
> }
>
> +void arch_pci_root_rescan(void)
> +{
> + acpi_pci_root_rescan();
> + pcibios_root_rescan();
I don't think we need this either.
We don't need pcibios_root_rescan() because there's no way to add or
remove buses except via the normal ACPI hotplug mechanisms. (Well,
you did add sysfs ways to do it, but I don't like those either, and
they certainly don't work for any kind of normal hotplug users might
do.)
We don't need acpi_pci_root_rescan(), because for actual host bridge
add/remove, we will get ACPI notify events, and we can use the normal
ways of handling those events. For debug purposes, we can have a
sysfs interface that kicks things off the same way a notify event
would.
> +}
> +
> /*
> * NUMA info for PCI busses
> *
> --
> 1.7.7
>
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