X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;ds=sidebyside;f=arch%2Fx86%2Fxen%2Fmmu.c;h=a3872f7632e880fb0a7e6312f5781e1df6ae1423;hb=61cca2fab7ecba18f9b9680cd736ef5fa82ad3b1;hp=24abc1f50dc5c671ae2e4a9973efd1d9762472a4;hpb=773659483685d652970583384a0294948e57f8b3;p=pandora-kernel.git

diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c
index 24abc1f50dc5..a3872f7632e8 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
 }