Hi David,
On Sat, Sep 12, 2015 at 12:21:55AM +0100, David Daney wrote:
> From: David Daney <david.daney@xxxxxxxxxx>
>
> Use pci_walk_bus() to restrict the fixup irq actions to only the bus
> being created.
>
> If we create multiple buses with pci-host-generic, or there are buses
> created by other drivers, we don't want to call pci_fixup_irqs() which
> operates on all devices, not just the devices on the bus being added.
> The consequence is that either the fixups are done more than once, or
> in some cases incorrect fixups could be applied.
>
> Signed-off-by: David Daney <david.daney@xxxxxxxxxx>
> ---
> drivers/pci/host/pci-host-generic.c | 8 +++++++-
> 1 file changed, 7 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/pci/host/pci-host-generic.c b/drivers/pci/host/pci-host-generic.c
> index 265dd25..a0fb241 100644
> --- a/drivers/pci/host/pci-host-generic.c
> +++ b/drivers/pci/host/pci-host-generic.c
> @@ -205,6 +205,12 @@ static int gen_pci_parse_map_cfg_windows(struct gen_pci *pci)
> return 0;
> }
>
> +static int gen_pci_fixup_irq_cb(struct pci_dev *dev, void *arg)
> +{
> + pdev_fixup_irq(dev, pci_common_swizzle, of_irq_parse_and_map_pci);
> + return 0;
> +}
> +
> static int gen_pci_probe(struct platform_device *pdev)
> {
> int err;
> @@ -262,7 +268,7 @@ static int gen_pci_probe(struct platform_device *pdev)
> return -ENODEV;
> }
>
> - pci_fixup_irqs(pci_common_swizzle, of_irq_parse_and_map_pci);
> + pci_walk_bus(bus, gen_pci_fixup_irq_cb, NULL);
Any chance we could put something in the core PCI code for this? I think
any host controller wanting to work with arm64 is potentially going to
run into the same problem.
Will
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