From: Jeff Ohlstein <johlstei@codeaurora.org>
Date: Thu, 21 Oct 2010 09:25:45 +0000 (-0700)
Subject: msm: timer: Decrease shift on timer clocksource
X-Git-Tag: v2.6.37-rc1~27^2~3
X-Git-Url: https://openfabrics.org/gitweb/?a=commitdiff_plain;h=6f9419619ef6de9d7781c1a312cf6099e5b44789;p=~emulex%2Finfiniband.git

msm: timer: Decrease shift on timer clocksource

The shift of 24 causes the shift and multiply operation to sometimes
overflow, resulting in incorrect timer values and poor performance.

Signed-off-by: Jeff Ohlstein <johlstei@codeaurora.org>
Signed-off-by: Daniel Walker <dwalker@codeaurora.org>
---

diff --git a/arch/arm/mach-msm/timer.c b/arch/arm/mach-msm/timer.c
index 7689848ec68..950100f19d0 100644
--- a/arch/arm/mach-msm/timer.c
+++ b/arch/arm/mach-msm/timer.c
@@ -137,7 +137,7 @@ static struct msm_clock msm_clocks[] = {
 			.rating         = 200,
 			.read           = msm_gpt_read,
 			.mask           = CLOCKSOURCE_MASK(32),
-			.shift          = 24,
+			.shift          = 17,
 			.flags          = CLOCK_SOURCE_IS_CONTINUOUS,
 		},
 		.irq = {