target/linux/generic-2.6/patches-2.6.21/32-time_fix_timespec_add_ns.patch

   1 time: prevent the loop in timespec_add_ns() from being optimised away
   2
   3 Since some architectures don't support __udivdi3().
   4
   5 --- a/include/linux/time.h
   6 +++ b/include/linux/time.h
   7 @@ -170,6 +170,10 @@ static inline void timespec_add_ns(struc
   8  {
   9         ns += a->tv_nsec;
  10         while(unlikely(ns >= NSEC_PER_SEC)) {
  11 +               /* The following asm() prevents the compiler from
  12 +                * optimising this loop into a modulo operation.  */
  13 +               asm("" : "+r"(ns));
  14 +
  15                 ns -= NSEC_PER_SEC;
  16                 a->tv_sec++;
  17         }