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| author | Jiang Liu <jiang.liu@linux.intel.com> | 2015-02-05 13:44:45 +0800 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2015-02-05 15:09:25 +0100 |
| commit | 812dbd9994f122629db73205a7f7f46b430a6360 (patch) | |
| tree | c224e43c42be39cce79090931a8a98a97be313bb /arch/x86/pci/acpi.c | |
| parent | 14d76b68f2819a1d0b50236a7e9e9f2ea69869d9 (diff) | |
| download | linux-0-day-812dbd9994f122629db73205a7f7f46b430a6360.tar.gz linux-0-day-812dbd9994f122629db73205a7f7f46b430a6360.tar.xz | |
x86/PCI: Fix the range check for IO resources
The range check in setup_res() checks the IO range against
iomem_resource. That's just wrong.
Reworked based on Thomas original patch.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'arch/x86/pci/acpi.c')
| -rw-r--r-- | arch/x86/pci/acpi.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/arch/x86/pci/acpi.c b/arch/x86/pci/acpi.c index bb98afd0591e7..1d725d99963d9 100644 --- a/arch/x86/pci/acpi.c +++ b/arch/x86/pci/acpi.c @@ -283,7 +283,7 @@ static acpi_status setup_resource(struct acpi_resource *acpi_res, void *data) struct acpi_resource_address64 addr; acpi_status status; unsigned long flags; - u64 start, orig_end, end; + u64 start, orig_end, end, res_end; status = resource_to_addr(acpi_res, &addr); if (!ACPI_SUCCESS(status)) @@ -293,8 +293,10 @@ static acpi_status setup_resource(struct acpi_resource *acpi_res, void *data) flags = IORESOURCE_MEM; if (addr.info.mem.caching == ACPI_PREFETCHABLE_MEMORY) flags |= IORESOURCE_PREFETCH; + res_end = (u64)iomem_resource.end; } else if (addr.resource_type == ACPI_IO_RANGE) { flags = IORESOURCE_IO; + res_end = (u64)ioport_resource.end; } else return AE_OK; @@ -302,7 +304,7 @@ static acpi_status setup_resource(struct acpi_resource *acpi_res, void *data) orig_end = end = addr.address.maximum + addr.address.translation_offset; /* Exclude non-addressable range or non-addressable portion of range */ - end = min(end, (u64)iomem_resource.end); + end = min(end, res_end); if (end <= start) { dev_info(&info->bridge->dev, "host bridge window [%#llx-%#llx] " |