Re: [PATCH] m68k: Fix off-by-one calendar month

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On Mon, Apr 23, 2018 at 3:02 AM, Finn Thain <fthain@xxxxxxxxxxxxxxxxxxx> wrote:

diff --git a/arch/m68k/kernel/time.c b/arch/m68k/kernel/time.c
index 97dd4e26f234..6b4389a6e8ea 100644
--- a/arch/m68k/kernel/time.c
+++ b/arch/m68k/kernel/time.c
@@ -74,17 +74,17 @@ static irqreturn_t timer_interrupt(int irq, void *dummy)
 void read_persistent_clock(struct timespec *ts)
 {
        struct rtc_time time;
+
        ts->tv_sec = 0;
        ts->tv_nsec = 0;

-       if (mach_hwclk) {
-               mach_hwclk(0, &time);
+       if (!mach_hwclk)
+               return;
+
+       mach_hwclk(0, &time);

-               if ((time.tm_year += 1900) < 1970)
-                       time.tm_year += 100;
-               ts->tv_sec = mktime(time.tm_year, time.tm_mon, time.tm_mday,
-                                     time.tm_hour, time.tm_min, time.tm_sec);
-       }
+       ts->tv_sec = mktime(time.tm_year + 1900, time.tm_mon + 1, time.tm_mday,
+                           time.tm_hour, time.tm_min, time.tm_sec);
 }

This clashes with a patch I had planned to submit today, but otherwise
looks correct and. I'll respin my patch on top of yours. Since I've taken
a good look at your changes in the meantime

Reviewed-by: Arnd Bergmann <arnd@xxxxxxxx>

      Arnd
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