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Re: [PATCH 12/24] PCI, ia64: Register busn_res for root buses

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On Tue, Feb 28, 2012 at 4:01 PM, Bjorn Helgaas <bhelgaas@xxxxxxxxxx> wrote:
> On Tue, Feb 28, 2012 at 3:07 PM, Yinghai Lu <yinghai@xxxxxxxxxx> wrote:
>> Signed-off-by: Yinghai Lu <yinghai@xxxxxxxxxx>
>> Cc: Tony Luck <tony.luck@xxxxxxxxx>
>> Cc: Fenghua Yu <fenghua.yu@xxxxxxxxx>
>> Cc: linux-ia64@xxxxxxxxxxxxxxx
>> ---
>>  arch/ia64/include/asm/pci.h |    1 +
>>  arch/ia64/pci/pci.c         |    5 +++++
>>  2 files changed, 6 insertions(+), 0 deletions(-)
>>
>> diff --git a/arch/ia64/include/asm/pci.h b/arch/ia64/include/asm/pci.h
>> index b22e5f5..6e54220 100644
>> --- a/arch/ia64/include/asm/pci.h
>> +++ b/arch/ia64/include/asm/pci.h
>> @@ -94,6 +94,7 @@ struct pci_controller {
>>
>>        unsigned int windows;
>>        struct pci_window *window;
>> +       struct resource busn;
>
> Why do you add a new struct resource here?  Can't you just use the one
> passed in from acpi_pci_root_add()?

not quite sure about the life cycle for that object.

>
>>
>>        void *platform_data;
>>  };
>> diff --git a/arch/ia64/pci/pci.c b/arch/ia64/pci/pci.c
>> index d1ce320..b250f0f 100644
>> --- a/arch/ia64/pci/pci.c
>> +++ b/arch/ia64/pci/pci.c
>> @@ -332,6 +332,7 @@ pci_acpi_scan_root(struct acpi_pci_root *root)
>>        struct acpi_device *device = root->device;
>>        int domain = root->segment;
>>        int bus = root->secondary.start;
>> +       int busmax = root->secondary.end;
>>        struct pci_controller *controller;
>>        unsigned int windows = 0;
>>        struct pci_root_info info;
>> @@ -372,6 +373,10 @@ pci_acpi_scan_root(struct acpi_pci_root *root)
>>                acpi_walk_resources(device->handle, METHOD_NAME__CRS,
>>                        add_window, &info);
>>        }
>> +       controller->busn.start = bus;
>> +       controller->busn.end = busmax;
>> +       conttoller->busn.flags = IORESOURCE_BUS;
>
> Typo here - "conttoller" should be "controller".

cool, sharp eyes.

>
>> +       pci_add_resource(&info.resources, &controller->busn);
>>        /*
>>         * See arch/x86/pci/acpi.c.
>>         * The desired pci bus might already be scanned in a quirk. We
>> --
>> 1.7.7
>>
--
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