MIPS: More detailed description of r4k_on_each_cpu

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/mm/c-r4k.c b/arch/mips/mm/c-r4k.c
index 6721ee2..4a46fb6 100644
--- a/arch/mips/mm/c-r4k.c
+++ b/arch/mips/mm/c-r4k.c
@@ -42,6 +42,7 @@
  *  o collapses to normal function call on UP kernels
  *  o collapses to normal function call on systems with a single shared
  *    primary cache.
+ *  o doesn't disable interrupts on the local CPU
  */
 static inline void r4k_on_each_cpu(void (*func) (void *info), void *info,
                                    int wait)