Merge git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6

[cascardo/linux.git] / drivers / char / agp / amd64-agp.c

diff --git a/drivers/char/agp/amd64-agp.c b/drivers/char/agp/amd64-agp.c
index 4857204..c9f0f25 100644 (file)
--- a/drivers/char/agp/amd64-agp.c
+++ b/drivers/char/agp/amd64-agp.c
@@ -14,6 +14,7 @@
 #include <linux/agp_backend.h>
 #include <linux/mmzone.h>
 #include <asm/page.h>          /* PAGE_SIZE */
+#include <asm/e820.h>
 #include <asm/k8.h>
 #include "agp.h"
 
@@ -259,7 +260,6 @@ static const struct agp_bridge_driver amd_8151_driver = {
 /* Some basic sanity checks for the aperture. */
 static int __devinit aperture_valid(u64 aper, u32 size)
 {
-       u32 pfn, c;
        if (aper == 0) {
                printk(KERN_ERR PFX "No aperture\n");
                return 0;
@@ -272,14 +272,9 @@ static int __devinit aperture_valid(u64 aper, u32 size)
                printk(KERN_ERR PFX "Aperture out of bounds\n");
                return 0;
        }
-       pfn = aper >> PAGE_SHIFT;
-       for (c = 0; c < size/PAGE_SIZE; c++) {
-               if (!pfn_valid(pfn + c))
-                       break;
-               if (!PageReserved(pfn_to_page(pfn + c))) {
-                       printk(KERN_ERR PFX "Aperture pointing to RAM\n");
-                       return 0;
-               }
+       if (e820_any_mapped(aper, aper + size, E820_RAM)) {
+               printk(KERN_ERR PFX "Aperture pointing to RAM\n");
+               return 0;
        }
 
        /* Request the Aperture. This catches cases when someone else