[PATCH] Normalize timespec for negative values in ns_to_timespec

- In case of a negative nsec value the result of the division must be
  normalized.

- Remove inline from an exported function.

Signed-off-by: George Anzinger <george@wildturkeyranch.net>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/kernel/time.c b/kernel/time.c
index 1f23e683d6aa01da497a86a8cd5ac6804ef5d6fe..804539165d8b1aea0ea0dac3631377d7ae107f89 100644 (file)
--- a/kernel/time.c
+++ b/kernel/time.c
@@ -637,15 +637,16 @@ void set_normalized_timespec(struct timespec *ts, time_t sec, long nsec)
  *
  * Returns the timespec representation of the nsec parameter.
  */
-inline struct timespec ns_to_timespec(const nsec_t nsec)
+struct timespec ns_to_timespec(const nsec_t nsec)
 {
        struct timespec ts;
 
-       if (nsec)
-               ts.tv_sec = div_long_long_rem_signed(nsec, NSEC_PER_SEC,
-                                                    &ts.tv_nsec);
-       else
-               ts.tv_sec = ts.tv_nsec = 0;
+       if (!nsec)
+               return (struct timespec) {0, 0};
+
+       ts.tv_sec = div_long_long_rem_signed(nsec, NSEC_PER_SEC, &ts.tv_nsec);
+       if (unlikely(nsec < 0))
+               set_normalized_timespec(&ts, ts.tv_sec, ts.tv_nsec);
 
        return ts;
 }