X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;ds=sidebyside;f=arch%2Fx86%2Fxen%2Fmmu.c;h=3dd53f997b11e768b72f11819c25d04ff39ff639;hb=5fe858b5b76be3cb1b1cf3ea40b7ca6706f8329c;hp=20a6142750644442492dabdbbd6a55aaa75244a5;hpb=1e8d4e8be2e104514564983239af9dd9521c7779;p=pandora-kernel.git

diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c
index 20a614275064..3dd53f997b11 100644
--- a/arch/x86/xen/mmu.c
+++ b/arch/x86/xen/mmu.c
@@ -1721,10 +1721,8 @@ void __init xen_setup_machphys_mapping(void)
 		machine_to_phys_nr = MACH2PHYS_NR_ENTRIES;
 	}
 #ifdef CONFIG_X86_32
-	if ((machine_to_phys_mapping + machine_to_phys_nr)
-	    < machine_to_phys_mapping)
-		machine_to_phys_nr = (unsigned long *)NULL
-				     - machine_to_phys_mapping;
+	WARN_ON((machine_to_phys_mapping + (machine_to_phys_nr - 1))
+		< machine_to_phys_mapping);
 #endif
 }