Pull sony into release branch

[linux-2.6-omap-h63xx.git] / include / linux / ktime.h

diff --git a/include/linux/ktime.h b/include/linux/ktime.h
index ed3396dcc4f753d0d7cdfe8780c679f7315bc65d..c68c7ac6b2323601321f80910f8b2e7a19e03709 100644 (file)
--- a/include/linux/ktime.h
+++ b/include/linux/ktime.h
@@ -56,7 +56,8 @@ typedef union {
 #endif
 } ktime_t;
 
-#define KTIME_MAX                      (~((u64)1 << 63))
+#define KTIME_MAX                      ((s64)~((u64)1 << 63))
+#define KTIME_SEC_MAX                  (KTIME_MAX / NSEC_PER_SEC)
 
 /*
  * ktime_t definitions when using the 64-bit scalar representation:
@@ -73,6 +74,10 @@ typedef union {
  */
 static inline ktime_t ktime_set(const long secs, const unsigned long nsecs)
 {
+#if (BITS_PER_LONG == 64)
+       if (unlikely(secs >= KTIME_SEC_MAX))
+               return (ktime_t){ .tv64 = KTIME_MAX };
+#endif
        return (ktime_t) { .tv64 = (s64)secs * NSEC_PER_SEC + (s64)nsecs };
 }
 
@@ -158,7 +163,7 @@ static inline ktime_t ktime_sub(const ktime_t lhs, const ktime_t rhs)
  * @add1:      addend1
  * @add2:      addend2
  *
- * Returns the sum of addend1 and addend2
+ * Returns the sum of @add1 and @add2.
  */
 static inline ktime_t ktime_add(const ktime_t add1, const ktime_t add2)
 {
@@ -184,7 +189,7 @@ static inline ktime_t ktime_add(const ktime_t add1, const ktime_t add2)
  * @kt:                addend
  * @nsec:      the scalar nsec value to add
  *
- * Returns the sum of kt and nsec in ktime_t format
+ * Returns the sum of @kt and @nsec in ktime_t format
  */
 extern ktime_t ktime_add_ns(const ktime_t kt, u64 nsec);
 
@@ -241,11 +246,11 @@ static inline struct timeval ktime_to_timeval(const ktime_t kt)
  * ktime_to_ns - convert a ktime_t variable to scalar nanoseconds
  * @kt:                the ktime_t variable to convert
  *
- * Returns the scalar nanoseconds representation of kt
+ * Returns the scalar nanoseconds representation of @kt
  */
-static inline u64 ktime_to_ns(const ktime_t kt)
+static inline s64 ktime_to_ns(const ktime_t kt)
 {
-       return (u64) kt.tv.sec * NSEC_PER_SEC + kt.tv.nsec;
+       return (s64) kt.tv.sec * NSEC_PER_SEC + kt.tv.nsec;
 }
 
 #endif
@@ -256,8 +261,7 @@ static inline u64 ktime_to_ns(const ktime_t kt)
  * idea of the (in)accuracy of timers. Timer values are rounded up to
  * this resolution values.
  */
-#define KTIME_REALTIME_RES     (ktime_t){ .tv64 = TICK_NSEC }
-#define KTIME_MONOTONIC_RES    (ktime_t){ .tv64 = TICK_NSEC }
+#define KTIME_LOW_RES          (ktime_t){ .tv64 = TICK_NSEC }
 
 /* Get the monotonic time in timespec format: */
 extern void ktime_get_ts(struct timespec *ts);