* [PATCH] msm: timer: Decrease shift on timer clocksource
@ 2010-10-21 9:25 Jeff Ohlstein
0 siblings, 0 replies; only message in thread
From: Jeff Ohlstein @ 2010-10-21 9:25 UTC (permalink / raw)
To: Daniel Walker
Cc: linux-arm-msm, linux-arm-kernel, linux-kernel, Jeff Ohlstein,
David Brown, Daniel Walker, Bryan Huntsman, Russell King
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>
---
arch/arm/mach-msm/timer.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/arch/arm/mach-msm/timer.c b/arch/arm/mach-msm/timer.c
index 7689848..950100f 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 = {
--
1.7.3.1
Sent by an employee of the Qualcomm Innovation Center, Inc.
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum.
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