2 files changed, 5 insertions, 38 deletions

diff --git a/arch/x86/pci/acpi.c b/arch/x86/pci/acpi.c
index 44f83ce02470..31930fd30ea9 100644
--- a/arch/x86/pci/acpi.c
+++ b/arch/x86/pci/acpi.c
@@ -121,30 +121,6 @@ count_resource(struct acpi_resource *acpi_res, void *data)
         return AE_OK;
 }
 
-static void
-align_resource(struct acpi_device *bridge, struct resource *res)
-{
-        int align = (res->flags & IORESOURCE_MEM) ? 16 : 4;
-
-        /*
-         * Host bridge windows are not BARs, but the decoders on the PCI side
-         * that claim this address space have starting alignment and length
-         * constraints, so fix any obvious BIOS goofs.
-         */
-        if (!IS_ALIGNED(res->start, align)) {
-                dev_printk(KERN_DEBUG, &bridge->dev,
-                           "host bridge window %pR invalid; "
-                           "aligning start to %d-byte boundary\n", res, align);
-                res->start &= ~(align - 1);
-        }
-        if (!IS_ALIGNED(res->end + 1, align)) {
-                dev_printk(KERN_DEBUG, &bridge->dev,
-                           "host bridge window %pR invalid; "
-                           "aligning end to %d-byte boundary\n", res, align);
-                res->end = ALIGN(res->end, align) - 1;
-        }
-}
-
 static acpi_status
 setup_resource(struct acpi_resource *acpi_res, void *data)
 {
@@ -154,7 +130,7 @@ setup_resource(struct acpi_resource *acpi_res, void *data)
         acpi_status status;
         unsigned long flags;
         struct resource *root, *conflict;
-        u64 start, end, max_len;
+        u64 start, end;
 
         status = resource_to_addr(acpi_res, &addr);
         if (!ACPI_SUCCESS(status))
@@ -171,19 +147,8 @@ setup_resource(struct acpi_resource *acpi_res, void *data)
         } else
                 return AE_OK;
 
-        max_len = addr.maximum - addr.minimum + 1;
-        if (addr.address_length > max_len) {
-                dev_printk(KERN_DEBUG, &info->bridge->dev,
-                           "host bridge window length %#llx doesn't fit in "
-                           "%#llx-%#llx, trimming\n",
-                           (unsigned long long) addr.address_length,
-                           (unsigned long long) addr.minimum,
-                           (unsigned long long) addr.maximum);
-                addr.address_length = max_len;
-        }
-
         start = addr.minimum + addr.translation_offset;
-        end = start + addr.address_length - 1;
+        end = addr.maximum + addr.translation_offset;
 
         res = &info->res[info->res_num];
         res->name = info->name;
@@ -191,7 +156,6 @@ setup_resource(struct acpi_resource *acpi_res, void *data)
         res->start = start;
         res->end = end;
         res->child = NULL;
-        align_resource(info->bridge, res);
 
         if (!pci_use_crs) {
                 dev_printk(KERN_DEBUG, &info->bridge->dev,
diff --git a/arch/x86/pci/i386.c b/arch/x86/pci/i386.c
index 46fd43f79103..97da2ba9344b 100644
--- a/arch/x86/pci/i386.c
+++ b/arch/x86/pci/i386.c
@@ -72,6 +72,9 @@ pcibios_align_resource(void *data, const struct resource *res,
                         return start;
                 if (start & 0x300)
                         start = (start + 0x3ff) & ~0x3ff;
+        } else if (res->flags & IORESOURCE_MEM) {
+                if (start < BIOS_END)
+                        start = BIOS_END;
         }
         return start;
 }