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ARM: at91: cpuidle: Fix target_residency

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commit 7e348b9012
Author: Robert Lee <rob.lee@linaro.org>
Date:   Tue Mar 20 15:22:43 2012 -0500

    ARM: at91: Consolidate time keeping and irq enable

    Enable core cpuidle timekeeping and irq enabling and remove that
    handling from this code.

introduced an additional zero to the state1 (suspend) target residency.

With a periodic tick, the cpu never enters the state1 with both 10000 and
100000.

With a tickless system, it enters to state1 much more often with the
initial value, roughly x7 more.

Fix it by setting the value to 10ms again.

Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
[nicola.ferre@atmel.com: add precisions given by Daniel to commit message]
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
This commit is contained in:
Daniel Lezcano 2013-06-21 14:36:59 +02:00 committed by Nicolas Ferre
parent 546c830c90
commit a008dad702
1 changed files with 1 additions and 1 deletions
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arch/arm/mach-at91/cpuidle.c
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@ -51,7 +51,7 @@ static struct cpuidle_driver at91_idle_driver = {
.states[1] = {
.enter = at91_enter_idle,
.exit_latency = 10,
.target_residency = 100000,
.target_residency = 10000,
.flags = CPUIDLE_FLAG_TIME_VALID,
.name = "RAM_SR",
.desc = "WFI and DDR Self Refresh",