[PATCH] Normalize timespec for negative values in ns_to_timespec

[Thomas Gleixner]

From: George Anzinger <george@xxxxxxxxxxxxxxxxxxx>

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@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>


Index: linux-2.6.15/kernel/time.c
===================================================================
--- linux-2.6.15.orig/kernel/time.c
+++ linux-2.6.15/kernel/time.c
@@ -658,15 +658,16 @@ void set_normalized_timespec(struct time
  *
  * 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;
 }

--

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/