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-rw-r--r--drivers/char/agp/amd64-agp.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/char/agp/amd64-agp.c b/drivers/char/agp/amd64-agp.c
index c9f0f250d78f..801abdd29066 100644
--- a/drivers/char/agp/amd64-agp.c
+++ b/drivers/char/agp/amd64-agp.c
@@ -268,7 +268,7 @@ static int __devinit aperture_valid(u64 aper, u32 size)
 		printk(KERN_ERR PFX "Aperture too small (%d MB)\n", size>>20);
 		return 0;
 	}
-	if (aper + size > 0xffffffff) {
+       if ((u64)aper + size > 0x100000000ULL) {
 		printk(KERN_ERR PFX "Aperture out of bounds\n");
 		return 0;
 	}