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authorJiang Liu <jiang.liu@linux.intel.com>2015-02-05 13:44:45 +0800
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2015-02-05 15:09:25 +0100
commit812dbd9994f122629db73205a7f7f46b430a6360 (patch)
treec224e43c42be39cce79090931a8a98a97be313bb /arch
parent14d76b68f2819a1d0b50236a7e9e9f2ea69869d9 (diff)
downloadlinux-812dbd9994f122629db73205a7f7f46b430a6360.tar.bz2
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')
-rw-r--r--arch/x86/pci/acpi.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/arch/x86/pci/acpi.c b/arch/x86/pci/acpi.c
index bb98afd0591e..1d725d99963d 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] "