From: John Stultz <john.stultz@linaro.org>
Date: Fri, 28 Sep 2012 22:00:27 +0000 (-0400)
Subject: Merge branch 'arnds-jiffies-fix' into fortglx/3.7/time
X-Git-Tag: drm-fsl-dcu-for-next~8897^2~2^2
X-Git-Url: http://git.agner.ch/gitweb/?a=commitdiff_plain;h=28f2b02bc581ffc835bc1691b18d03f62fcf0395;p=linux-drm-fsl-dcu.git

Merge branch 'arnds-jiffies-fix' into fortglx/3.7/time

Sort out conflict with Arnd's patch that preserves
the unconditional LATCH value.

Signed-off-by: John Stultz <john.stultz@linaro.org>
---

28f2b02bc581ffc835bc1691b18d03f62fcf0395
diff --cc include/linux/jiffies.h
index 388edb54bfb6,44e389d8e8fd..c6d5b2afdc96
--- a/include/linux/jiffies.h
+++ b/include/linux/jiffies.h
@@@ -51,10 -51,22 +51,13 @@@
  #define SH_DIV(NOM,DEN,LSH) (   (((NOM) / (DEN)) << (LSH))              \
                               + ((((NOM) % (DEN)) << (LSH)) + (DEN) / 2) / (DEN))
  
+ /* LATCH is used in the interval timer and ftape setup. */
+ #define LATCH ((CLOCK_TICK_RATE + HZ/2) / HZ)	/* For divider */
+ 
 -#ifdef CLOCK_TICK_RATE
 -
 -/*
 - * HZ is the requested value. However the CLOCK_TICK_RATE may not allow
 - * for exactly HZ. So SHIFTED_HZ is high res HZ ("<< 8" is for accuracy)
 - */
 -# define SHIFTED_HZ (SH_DIV(CLOCK_TICK_RATE, LATCH, 8))
 -#else
 -# define SHIFTED_HZ (HZ << 8)
 -#endif
 +extern int register_refined_jiffies(long clock_tick_rate);
  
  /* TICK_NSEC is the time between ticks in nsec assuming SHIFTED_HZ */
 -#define TICK_NSEC (SH_DIV(1000000UL * 1000, SHIFTED_HZ, 8))
 +#define TICK_NSEC ((NSEC_PER_SEC+HZ/2)/HZ)
  
  /* TICK_USEC is the time between ticks in usec assuming fake USER_HZ */
  #define TICK_USEC ((1000000UL + USER_HZ/2) / USER_HZ)