The macro set_wrprotect() should not be defined to have a value. Make it
a do {} while(0) instead of ({}).
Noticed by Chris Wright.
Signed-off-by: Zachary Amsden <zach@xxxxxxxxxx>
Patch-subject: Make set_wrprotect() value safe
Index: linux-2.6.13/include/asm-generic/pgtable.h
===================================================================
--- linux-2.6.13.orig/include/asm-generic/pgtable.h 2005-08-15 13:54:42.000000000 -0700
+++ linux-2.6.13/include/asm-generic/pgtable.h 2005-08-22 14:21:05.000000000 -0700
@@ -314,11 +314,11 @@ do { \
#ifndef __HAVE_ARCH_PTEP_SET_WRPROTECT
#define ptep_set_wrprotect(__mm, __address, __ptep) \
-({ \
+do { \
pte_t __old_pte = *(__ptep); \
set_pte_at((__mm), (__address), (__ptep), \
pte_wrprotect(__old_pte)); \
-})
+} while (0)
#endif
#ifndef __HAVE_ARCH_PTE_SAME
