x86, AMD IOMMU: include amd_iommu_last_bdf in device initialization

All the values read while searching for amd_iommu_last_bdf are defined as
inclusive. Let the code handle this value as such. Found by Wei Wang. Thanks
Wei.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Cc: iommu@lists.linux-foundation.org
Cc: bhavna.sarathy@amd.com
Cc: robert.richter@amd.com
Cc: Wei Wang <wei.wang2@amd.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c
index c25210e..7469740 100644 (file)
--- a/arch/x86/kernel/amd_iommu.c
+++ b/arch/x86/kernel/amd_iommu.c
@@ -667,7 +667,7 @@ static int get_device_resources(struct device *dev,
        _bdf = calc_devid(pcidev->bus->number, pcidev->devfn);
 
        /* device not translated by any IOMMU in the system? */
-       if (_bdf >= amd_iommu_last_bdf) {
+       if (_bdf > amd_iommu_last_bdf) {
                *iommu = NULL;
                *domain = NULL;
                *bdf = 0xffff;
@@ -1085,7 +1085,7 @@ void prealloc_protection_domains(void)
 
        while ((dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev)) != NULL) {
                devid = (dev->bus->number << 8) | dev->devfn;
-               if (devid >= amd_iommu_last_bdf)
+               if (devid > amd_iommu_last_bdf)
                        continue;
                devid = amd_iommu_alias_table[devid];
                if (domain_for_device(devid))

diff --git a/arch/x86/kernel/amd_iommu_init.c b/arch/x86/kernel/amd_iommu_init.c
index c9d8ff2..d9a9da5 100644 (file)
--- a/arch/x86/kernel/amd_iommu_init.c
+++ b/arch/x86/kernel/amd_iommu_init.c
@@ -732,7 +732,7 @@ static int __init init_exclusion_range(struct ivmd_header *m)
                set_device_exclusion_range(m->devid, m);
                break;
        case ACPI_IVMD_TYPE_ALL:
-               for (i = 0; i < amd_iommu_last_bdf; ++i)
+               for (i = 0; i <= amd_iommu_last_bdf; ++i)
                        set_device_exclusion_range(i, m);
                break;
        case ACPI_IVMD_TYPE_RANGE:
@@ -934,7 +934,7 @@ int __init amd_iommu_init(void)
        /*
         * let all alias entries point to itself
         */
-       for (i = 0; i < amd_iommu_last_bdf; ++i)
+       for (i = 0; i <= amd_iommu_last_bdf; ++i)
                amd_iommu_alias_table[i] = i;
 
        /*