Re: [PATCH v6 3/3] arm64: Add architecture support for PCI

[Jingoo Han]

On Wednesday, March 05, 2014 8:49 PM, Liviu Dudau wrote:
> 
> Use the generic host bridge functions to provide support for
> PCI Express on arm64. There is no support for ISA memory.
> 
> Signed-off-by: Liviu Dudau <Liviu.Dudau@xxxxxxx>
> Tested-by: Tanmay Inamdar <tinamdar@xxxxxxx>
> ---
>  arch/arm64/Kconfig            |  19 +++-
>  arch/arm64/include/asm/Kbuild |   1 +
>  arch/arm64/include/asm/io.h   |   3 +-
>  arch/arm64/include/asm/pci.h  |  49 +++++++++
>  arch/arm64/kernel/Makefile    |   1 +
>  arch/arm64/kernel/pci.c       | 173 ++++++++++++++++++++++++++++++++
>  6 files changed, 244 insertions(+), 2 deletions(-)
>  create mode 100644 arch/arm64/include/asm/pci.h
>  create mode 100644 arch/arm64/kernel/pci.c

[.....]

> --- /dev/null
> +++ b/arch/arm64/include/asm/pci.h

[.....]

> +
> +static inline int pci_domain_nr(struct pci_bus *bus)
> +{
> +	struct pci_host_bridge *bridge = find_pci_host_bridge(bus);
> +
> +	if (bridge)
> +		return bridge->domain_nr;
> +
> +	return 0;
> +}

Hi Liviu Dudau,

When CONFIG_PCI=n, the following build errors happen. :-(
Would you confirm this?

In file included from include/linux/pci.h:1393:0,
                 from drivers/scsi/scsi_lib.c:19:
arch/arm64/include/asm/pci.h:31:19: error: redefinition of 'pci_domain_nr'
 static inline int pci_domain_nr(struct pci_bus *bus)
                   ^
In file included from drivers/scsi/scsi_lib.c:19:0:
include/linux/pci.h:1383:19: note: previous definition of 'pci_domain_nr' was here
 static inline int pci_domain_nr(struct pci_bus *bus) { return 0; }
                   ^
             .....

Best regards,
Jingoo Han

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