1 files changed, 20 insertions, 0 deletions

diff --git a/include/asm-arm/system.h b/include/asm-arm/system.h
index f60faccf01fa..e160aeb0138d 100644
--- a/include/asm-arm/system.h
+++ b/include/asm-arm/system.h
@@ -173,6 +173,26 @@ static inline void set_copro_access(unsigned int val)
 extern unsigned long cr_no_alignment;   /* defined in entry-armv.S */
 extern unsigned long cr_alignment;      /* defined in entry-armv.S */
 
+#ifndef CONFIG_SMP
+static inline void adjust_cr(unsigned long mask, unsigned long set)
+{
+        unsigned long flags, cr;
+
+        mask &= ~CR_A;
+
+        set &= mask;
+
+        local_irq_save(flags);
+
+        cr_no_alignment = (cr_no_alignment & ~mask) | set;
+        cr_alignment = (cr_alignment & ~mask) | set;
+
+        set_cr((get_cr() & ~mask) | set);
+
+        local_irq_restore(flags);
+}
+#endif
+
 #define UDBG_UNDEFINED  (1 << 0)
 #define UDBG_SYSCALL    (1 << 1)
 #define UDBG_BADABORT   (1 << 2)