alpha/PCI: Call iomem_is_exclusive() for IORESOURCE_MEM, but not IORESOURCE_IO

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 <bhelgaas@google.com>
CC: Ivan Kokshaysky <ink@jurassic.park.msu.ru>

diff --git a/arch/alpha/kernel/pci-sysfs.c b/arch/alpha/kernel/pci-sysfs.c
index 99e8d47..92c0d46 100644 (file)
--- 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);