x86_64: off-by-two error in aperture.c

I'm using a custom BIOS to configure the northbridge GART at address
0x80000000, size 2G.  Linux complains:

"Aperture from northbridge cpu 0 beyond 4GB. Ignoring."

I think there's an off-by-two error in arch/x86_64/kernel/aperture.c:

AK: use correct types for i386

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/arch/x86_64/kernel/aperture.c b/arch/x86_64/kernel/aperture.c
index a52af5820592..a3d450d6c15b 100644
--- a/arch/x86_64/kernel/aperture.c
+++ b/arch/x86_64/kernel/aperture.c
@@ -86,7 +86,7 @@ static int __init aperture_valid(u64 aper_base, u32 aper_size)
                 printk("Aperture too small (%d MB)\n", aper_size>>20);
                 return 0;
         }
-        if (aper_base + aper_size >= 0xffffffff) { 
+        if (aper_base + aper_size > 0x100000000UL) {
                 printk("Aperture beyond 4GB. Ignoring.\n");
                 return 0; 
         }