Hi Lorenzo,
On Thu, May 14, 2015 at 03:42:16PM +0100, Lorenzo Pieralisi wrote:
> When a device is scanned and added to the PCI bus, its resources
> should be claimed to validate the BARs configuration and to assign
> them a parent resource so that the resource hierarchy can be sanity
> checked.
>
> This patch adds code that carries out PCI device resources claiming to
> the ARM64 pcibios_add_device implementation so that device resources
> are claimed by the core PCI layer upon PCI device initialization on
> ARM64 systems.
>
> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@xxxxxxx>
> Cc: Arnd Bergmann <arnd@xxxxxxxx>
> Cc: Will Deacon <will.deacon@xxxxxxx>
> Cc: Liviu Dudau <liviu.dudau@xxxxxxx>
> Cc: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
Seems like Suravee proposed a tweak? Can you post a v2 with that
incorporated if necessary?
Bjorn
> ---
> arch/arm64/kernel/pci.c | 10 ++++++++++
> 1 file changed, 10 insertions(+)
>
> diff --git a/arch/arm64/kernel/pci.c b/arch/arm64/kernel/pci.c
> index 4095379..c0a88ca 100644
> --- a/arch/arm64/kernel/pci.c
> +++ b/arch/arm64/kernel/pci.c
> @@ -43,8 +43,18 @@ resource_size_t pcibios_align_resource(void *data, const struct resource *res,
> */
> int pcibios_add_device(struct pci_dev *dev)
> {
> + struct resource *res;
> + int i;
> +
> dev->irq = of_irq_parse_and_map_pci(dev, 0, 0);
>
> + for (i = 0; i < PCI_NUM_RESOURCES; i++) {
> + res = &dev->resource[i];
> + if (res->parent || !res->flags)
> + continue;
> + pci_claim_resource(dev, i);
> + }
> +
> return 0;
> }
>
> --
> 2.2.1
>
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