Hi Marcelo,

is this appropriate for 2.4? It seems to apply cleanly to 
your current git tree.

Signed-off-by: Horms <[EMAIL PROTECTED]>

From: john stultz <[EMAIL PROTECTED]>
Date: Fri, 1 Jul 2005 05:08:54 +0000 (+1000)
Subject: [PATCH] ppc32: stop misusing ntps time_offset value
X-Git-Tag: v2.6.12.3
X-Git-Url: 
http://www.kernel.org/git/?p=linux/kernel/git/gregkh/linux-2.6.12.y.git;a=commitdiff;h=8f399a7448e0b58eae969426f61b7e81d55d2639

  [PATCH] ppc32: stop misusing ntps time_offset value
  
  As part of my timeofday rework, I've been looking at the NTP code and I
  noticed that the PPC architecture is apparently misusing the NTP's
  time_offset (it is a terrible name!) value as some form of timezone offset.
  
  This could cause problems when time_offset changed by the NTP code.  This
  patch changes the PPC code so it uses a more clear local variable:
  timezone_offset.
  
  Signed-off-by: John Stultz <[EMAIL PROTECTED]>
  Acked-by: Tom Rini <[EMAIL PROTECTED]>
  Cc: Benjamin Herrenschmidt <[EMAIL PROTECTED]>
  Signed-off-by: Andrew Morton <[EMAIL PROTECTED]>
  Signed-off-by: Chris Wright <[EMAIL PROTECTED]>
  Signed-off-by: Greg Kroah-Hartman <[EMAIL PROTECTED]>
---
Backported to Debian's 2.6.8 by dann frazier <[EMAIL PROTECTED]>
Backported to Debian's 2.4.27 by Horms <[EMAIL PROTECTED]>

--- a/arch/ppc/kernel/time.c    2003-08-25 20:44:40.000000000 +0900
+++ b/arch/ppc/kernel/time.c    2005-08-02 15:37:12.000000000 +0900
@@ -84,7 +84,7 @@
 
 extern unsigned long wall_jiffies;
 
-static long time_offset;
+static long timezone_offset;
 
 spinlock_t rtc_lock = SPIN_LOCK_UNLOCKED;
 
@@ -187,7 +187,7 @@
                     xtime.tv_sec - last_rtc_update >= 659 &&
                     abs(xtime.tv_usec - (1000000-1000000/HZ)) < 500000/HZ &&
                     jiffies - wall_jiffies == 1) {
-                       if (ppc_md.set_rtc_time(xtime.tv_sec+1 + time_offset) 
== 0)
+                       if (ppc_md.set_rtc_time(xtime.tv_sec+1 + 
timezone_offset) == 0)
                                last_rtc_update = xtime.tv_sec+1;
                        else
                                /* Try again one minute later */
@@ -297,7 +297,7 @@
        unsigned old_stamp, stamp, elapsed;
 
         if (ppc_md.time_init != NULL)
-                time_offset = ppc_md.time_init();
+                timezone_offset = ppc_md.time_init();
 
        if (__USE_RTC()) {
                /* 601 processor: dec counts down by 128 every 128ns */
@@ -344,9 +344,9 @@
        /* If platform provided a timezone (pmac), we correct the time
         * using do_sys_settimeofday() which in turn calls warp_clock()
         */
-        if (time_offset) {
+        if (timezone_offset) {
                struct timezone tz;
-               tz.tz_minuteswest = -time_offset / 60;
+               tz.tz_minuteswest = -timezone_offset / 60;
                tz.tz_dsttime = 0;
                do_sys_settimeofday(NULL, &tz);
         }


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