From: Tony Lindgren <tony@atomide.com>
Date: Wed, 14 Sep 2005 11:33:55 +0000 (+0300)
Subject: ARM: OMAP: Fix CLOCK_TICK_RATE for 32KHz timer for POSIX timers
X-Git-Tag: v2.6.15-omap2~229
X-Git-Url: http://pilppa.com/gitweb/?a=commitdiff_plain;h=c9c0b33b063eecce8c9a3868c90d67507e89671d;p=linux-2.6-omap-h63xx.git

ARM: OMAP: Fix CLOCK_TICK_RATE for 32KHz timer for POSIX timers

POSIX timers were triggering too fast. This was caused by incorrect
CLOCK_TICK_RATE for 32KHz timer.
---

diff --git a/include/asm-arm/arch-omap/timex.h b/include/asm-arm/arch-omap/timex.h
index b61ddb491e8..21f2e367185 100644
--- a/include/asm-arm/arch-omap/timex.h
+++ b/include/asm-arm/arch-omap/timex.h
@@ -28,6 +28,14 @@
 #if !defined(__ASM_ARCH_OMAP_TIMEX_H)
 #define __ASM_ARCH_OMAP_TIMEX_H
 
+/*
+ * OMAP 32KHz timer updates time one jiffie at a time from a secondary timer,
+ * and that's why the CLOCK_TICK_RATE is not 32768.
+ */
+#ifdef CONFIG_OMAP_32K_TIMER
+#define CLOCK_TICK_RATE		(CONFIG_OMAP_32K_TIMER_HZ)
+#else
 #define CLOCK_TICK_RATE		(HZ * 100000UL)
+#endif
 
 #endif /* __ASM_ARCH_OMAP_TIMEX_H */