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Diffstat (limited to 'arch/m68k/kernel/time.c')
-rw-r--r--arch/m68k/kernel/time.c16
1 files changed, 3 insertions, 13 deletions
diff --git a/arch/m68k/kernel/time.c b/arch/m68k/kernel/time.c
index 1072e4946a4a..6cfc984380d9 100644
--- a/arch/m68k/kernel/time.c
+++ b/arch/m68k/kernel/time.c
@@ -96,31 +96,23 @@ void time_init(void)
96void do_gettimeofday(struct timeval *tv) 96void do_gettimeofday(struct timeval *tv)
97{ 97{
98 unsigned long flags; 98 unsigned long flags;
99 extern unsigned long wall_jiffies;
100 unsigned long seq; 99 unsigned long seq;
101 unsigned long usec, sec, lost; 100 unsigned long usec, sec;
102 unsigned long max_ntp_tick = tick_usec - tickadj; 101 unsigned long max_ntp_tick = tick_usec - tickadj;
103 102
104 do { 103 do {
105 seq = read_seqbegin_irqsave(&xtime_lock, flags); 104 seq = read_seqbegin_irqsave(&xtime_lock, flags);
106 105
107 usec = mach_gettimeoffset(); 106 usec = mach_gettimeoffset();
108 lost = jiffies - wall_jiffies;
109 107
110 /* 108 /*
111 * If time_adjust is negative then NTP is slowing the clock 109 * If time_adjust is negative then NTP is slowing the clock
112 * so make sure not to go into next possible interval. 110 * so make sure not to go into next possible interval.
113 * Better to lose some accuracy than have time go backwards.. 111 * Better to lose some accuracy than have time go backwards..
114 */ 112 */
115 if (unlikely(time_adjust < 0)) { 113 if (unlikely(time_adjust < 0))
116 usec = min(usec, max_ntp_tick); 114 usec = min(usec, max_ntp_tick);
117 115
118 if (lost)
119 usec += lost * max_ntp_tick;
120 }
121 else if (unlikely(lost))
122 usec += lost * tick_usec;
123
124 sec = xtime.tv_sec; 116 sec = xtime.tv_sec;
125 usec += xtime.tv_nsec/1000; 117 usec += xtime.tv_nsec/1000;
126 } while (read_seqretry_irqrestore(&xtime_lock, seq, flags)); 118 } while (read_seqretry_irqrestore(&xtime_lock, seq, flags));
@@ -141,7 +133,6 @@ int do_settimeofday(struct timespec *tv)
141{ 133{
142 time_t wtm_sec, sec = tv->tv_sec; 134 time_t wtm_sec, sec = tv->tv_sec;
143 long wtm_nsec, nsec = tv->tv_nsec; 135 long wtm_nsec, nsec = tv->tv_nsec;
144 extern unsigned long wall_jiffies;
145 136
146 if ((unsigned long)tv->tv_nsec >= NSEC_PER_SEC) 137 if ((unsigned long)tv->tv_nsec >= NSEC_PER_SEC)
147 return -EINVAL; 138 return -EINVAL;
@@ -153,8 +144,7 @@ int do_settimeofday(struct timespec *tv)
153 * Discover what correction gettimeofday 144 * Discover what correction gettimeofday
154 * would have done, and then undo it! 145 * would have done, and then undo it!
155 */ 146 */
156 nsec -= 1000 * (mach_gettimeoffset() + 147 nsec -= 1000 * mach_gettimeoffset();
157 (jiffies - wall_jiffies) * (1000000 / HZ));
158 148
159 wtm_sec = wall_to_monotonic.tv_sec + (xtime.tv_sec - sec); 149 wtm_sec = wall_to_monotonic.tv_sec + (xtime.tv_sec - sec);
160 wtm_nsec = wall_to_monotonic.tv_nsec + (xtime.tv_nsec - nsec); 150 wtm_nsec = wall_to_monotonic.tv_nsec + (xtime.tv_nsec - nsec);