From: Jiang Liu Date: Thu, 5 Feb 2015 05:44:45 +0000 (+0800) Subject: x86/PCI: Fix the range check for IO resources X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=812dbd9994f122629db73205a7f7f46b430a6360;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git 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 Signed-off-by: Jiang Liu Signed-off-by: Rafael J. Wysocki --- 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] "