On Thu, Apr 07, 2016 at 05:15:15PM -0700, Yinghai Lu wrote:
> From: Bjorn Helgaas <bhelg...@google.com>
>
> The alpha pci_mmap_resource() is used for both IORESOURCE_MEM and
> IORESOURCE_IO resources, but iomem_is_exclusive() is only applicable for
> IORESOURCE_MEM.
>
> Call iomem_is_exclusive() only for IORESOURCE_MEM resources, and do it
> earlier to match the generic version of pci_mmap_resource().
>
> Fixes: 10a0ef39fbd1 ("PCI/alpha: pci sysfs resources")
> Signed-off-by: Bjorn Helgaas <bhelg...@google.com>
> CC: Ivan Kokshaysky <i...@jurassic.park.msu.ru>
I applied these first two patches to pci/resource for v4.7.
> ---
> arch/alpha/kernel/pci-sysfs.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/arch/alpha/kernel/pci-sysfs.c b/arch/alpha/kernel/pci-sysfs.c
> index 99e8d47..92c0d46 100644
> --- a/arch/alpha/kernel/pci-sysfs.c
> +++ b/arch/alpha/kernel/pci-sysfs.c
> @@ -77,10 +77,10 @@ static int pci_mmap_resource(struct kobject *kobj,
> if (i >= PCI_ROM_RESOURCE)
> return -ENODEV;
>
> - if (!__pci_mmap_fits(pdev, i, vma, sparse))
> + if (res->flags & IORESOURCE_MEM && iomem_is_exclusive(res->start))
> return -EINVAL;
>
> - if (iomem_is_exclusive(res->start))
> + if (!__pci_mmap_fits(pdev, i, vma, sparse))
> return -EINVAL;
>
> pcibios_resource_to_bus(pdev->bus, &bar, res);
> --
> 1.8.4.5
>
> --
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