Hello! Any opinion on this patch?
On Saturday 20 August 2022 14:33:27 Pali Rohár wrote:
> If there's no PCI host bridge with ISA then check for PCI host bridge with
> alias "pci0" (first PCI host bridge) and if it exists then choose it as the
> primary PCI host bridge.
>
> This makes choice of primary PCI host bridge more stable across boots and
> updates as the last fallback candidate for primary PCI host bridge (if
> there is no choice) is selected arbitrary.
>
> Signed-off-by: Pali Rohár <p...@kernel.org>
> ---
> arch/powerpc/sysdev/fsl_pci.c | 13 +++++++++++++
> 1 file changed, 13 insertions(+)
>
> diff --git a/arch/powerpc/sysdev/fsl_pci.c b/arch/powerpc/sysdev/fsl_pci.c
> index 1011cfea2e32..e4b703943dd3 100644
> --- a/arch/powerpc/sysdev/fsl_pci.c
> +++ b/arch/powerpc/sysdev/fsl_pci.c
> @@ -1125,6 +1125,19 @@ void __init fsl_pci_assign_primary(void)
> return;
> }
>
> + /*
> + * If there's no PCI host bridge with ISA then check for
> + * PCI host bridge with alias "pci0" (first PCI host bridge).
> + */
> + np = of_find_node_by_path("pci0");
> + if (np && of_match_node(pci_ids, np) && of_device_is_available(np)) {
> + fsl_pci_primary = np;
> + of_node_put(np);
> + return;
> + }
> + if (np)
> + of_node_put(np);
> +
> /*
> * If there's no PCI host bridge with ISA, arbitrarily
> * designate one as primary. This can go away once
> --
> 2.20.1
>
