Re: [PATCH 2/2] ppc/pnv: Fix PCI_EXPRESS dependency

[Greg Kurz <groug@kaod.org>]

On Wed,  5 Feb 2020 21:41:15 +0100
Laurent Vivier <lvivier@redhat.com> wrote:

> When PHB4 bridge has been added, the dependencies to PCIE_PORT has been
> added to XIVE_SPAPR and indirectly to PSERIES.
> The build of the PowerNV machine is fine while we also build the PSERIES
> machine.
> If we disable the PSERIES machine, the PowerNV build fails because the
> PCI Express files are not built:
> 
> /usr/bin/ld: hw/ppc/pnv.o: in function `pnv_chip_power8_pic_print_info':
> .../hw/ppc/pnv.c:623: undefined reference to `pnv_phb3_msi_pic_print_info'
> /usr/bin/ld: hw/ppc/pnv.o: in function `pnv_chip_power9_pic_print_info':
> .../hw/ppc/pnv.c:639: undefined reference to `pnv_phb4_pic_print_info'
> /usr/bin/ld: ../hw/usb/hcd-ehci-pci.o: in function `usb_ehci_pci_write_config':
> .../hw/usb/hcd-ehci-pci.c:129: undefined reference to `pci_default_write_config'
> /usr/bin/ld: ../hw/usb/hcd-ehci-pci.o: in function `usb_ehci_pci_realize':
> .../hw/usb/hcd-ehci-pci.c:68: undefined reference to `pci_allocate_irq'
> /usr/bin/ld: .../hw/usb/hcd-ehci-pci.c:72: undefined reference to `pci_register_bar'
> /usr/bin/ld: ../hw/usb/hcd-ehci-pci.o:(.data.rel+0x50): undefined reference to `vmstate_pci_device'
> 
> This patch fixes the problem by adding needed dependencies to POWERNV.
> 
> Fixes: 4f9924c4d4cf ("ppc/pnv: Add models for POWER9 PHB4 PCIe Host bridge")
> Signed-off-by: Laurent Vivier <lvivier@redhat.com>
> ---
>  hw/ppc/Kconfig | 6 ++++--
>  1 file changed, 4 insertions(+), 2 deletions(-)
> 
> diff --git a/hw/ppc/Kconfig b/hw/ppc/Kconfig
> index 354828bf132f..3e11d0b53e11 100644
> --- a/hw/ppc/Kconfig
> +++ b/hw/ppc/Kconfig
> @@ -29,6 +29,10 @@ config POWERNV
>      select XICS
>      select XIVE
>      select FDT_PPC
> +    select PCI

Is it needed since PCI_EXPRESS already selects PCI in hw/pci/Kconfig ?

Apart from that:

Reviewed-by: Greg Kurz <groug@kaod.org>

> +    select PCI_EXPRESS
> +    select MSI_NONBROKEN
> +    select PCIE_PORT
>  
>  config PPC405
>      bool
> @@ -135,8 +139,6 @@ config XIVE_SPAPR
>      default y
>      depends on PSERIES
>      select XIVE
> -    select PCI
> -    select PCIE_PORT
>  
>  config XIVE_KVM
>      bool