powerpc: remove unused to_tm() helper

to_tm() is now completely unused, the only reference being in the
_dump_time() helper that is also unused. This removes both, leaving
the rest of the powerpc RTC code y2038 safe to as far as the hardware
supports.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

diff --git a/arch/powerpc/include/asm/time.h b/arch/powerpc/include/asm/time.h
index 69b89f9..b80d492 100644 (file)
--- a/arch/powerpc/include/asm/time.h
+++ b/arch/powerpc/include/asm/time.h
@@ -26,8 +26,6 @@ extern unsigned long tb_ticks_per_usec;
 extern unsigned long tb_ticks_per_sec;
 extern struct clock_event_device decrementer_clockevent;
 
-struct rtc_time;
-extern void to_tm(int tim, struct rtc_time * tm);
 
 extern void generic_calibrate_decr(void);
 extern void hdec_interrupt(struct pt_regs *regs);

diff --git a/arch/powerpc/kernel/time.c b/arch/powerpc/kernel/time.c
index b025acb..2530cf6 100644 (file)
--- a/arch/powerpc/kernel/time.c
+++ b/arch/powerpc/kernel/time.c
@@ -1159,56 +1159,6 @@ void __init time_init(void)
 #endif
 }
 
-
-#define FEBRUARY       2
-#define        STARTOFTIME     1970
-#define SECDAY         86400L
-#define SECYR          (SECDAY * 365)
-#define        leapyear(year)          ((year) % 4 == 0 && \
-                                ((year) % 100 != 0 || (year) % 400 == 0))
-#define        days_in_year(a)         (leapyear(a) ? 366 : 365)
-#define        days_in_month(a)        (month_days[(a) - 1])
-
-static int month_days[12] = {
-       31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31
-};
-
-void to_tm(int tim, struct rtc_time * tm)
-{
-       register int    i;
-       register long   hms, day;
-
-       day = tim / SECDAY;
-       hms = tim % SECDAY;
-
-       /* Hours, minutes, seconds are easy */
-       tm->tm_hour = hms / 3600;
-       tm->tm_min = (hms % 3600) / 60;
-       tm->tm_sec = (hms % 3600) % 60;
-
-       /* Number of years in days */
-       for (i = STARTOFTIME; day >= days_in_year(i); i++)
-               day -= days_in_year(i);
-       tm->tm_year = i;
-
-       /* Number of months in days left */
-       if (leapyear(tm->tm_year))
-               days_in_month(FEBRUARY) = 29;
-       for (i = 1; day >= days_in_month(i); i++)
-               day -= days_in_month(i);
-       days_in_month(FEBRUARY) = 28;
-       tm->tm_mon = i;
-
-       /* Days are what is left over (+1) from all that. */
-       tm->tm_mday = day + 1;
-
-       /*
-        * No-one uses the day of the week.
-        */
-       tm->tm_wday = -1;
-}
-EXPORT_SYMBOL(to_tm);
-
 /*
  * Divide a 128-bit dividend by a 32-bit divisor, leaving a 128 bit
  * result.

diff --git a/arch/powerpc/platforms/ps3/time.c b/arch/powerpc/platforms/ps3/time.c
index 9dac125..08ca76e 100644 (file)
--- a/arch/powerpc/platforms/ps3/time.c
+++ b/arch/powerpc/platforms/ps3/time.c
@@ -28,30 +28,6 @@
 
 #include "platform.h"
 
-#define dump_tm(_a) _dump_tm(_a, __func__, __LINE__)
-static void _dump_tm(const struct rtc_time *tm, const char* func, int line)
-{
-       pr_debug("%s:%d tm_sec  %d\n", func, line, tm->tm_sec);
-       pr_debug("%s:%d tm_min  %d\n", func, line, tm->tm_min);
-       pr_debug("%s:%d tm_hour %d\n", func, line, tm->tm_hour);
-       pr_debug("%s:%d tm_mday %d\n", func, line, tm->tm_mday);
-       pr_debug("%s:%d tm_mon  %d\n", func, line, tm->tm_mon);
-       pr_debug("%s:%d tm_year %d\n", func, line, tm->tm_year);
-       pr_debug("%s:%d tm_wday %d\n", func, line, tm->tm_wday);
-}
-
-#define dump_time(_a) _dump_time(_a, __func__, __LINE__)
-static void __maybe_unused _dump_time(int time, const char *func,
-       int line)
-{
-       struct rtc_time tm;
-
-       to_tm(time, &tm);
-
-       pr_debug("%s:%d time    %d\n", func, line, time);
-       _dump_tm(&tm, func, line);
-}
-
 void __init ps3_calibrate_decr(void)
 {
        int result;