From a008dad702a55b27720760ab0f8a129dde49fb6e Mon Sep 17 00:00:00 2001 From: Daniel Lezcano Date: Fri, 21 Jun 2013 14:36:59 +0200 Subject: [PATCH] ARM: at91: cpuidle: Fix target_residency The following commit: commit 7e348b9012522fa0efd854d20d210d5e57fcedd1 Author: Robert Lee 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 [nicola.ferre@atmel.com: add precisions given by Daniel to commit message] Signed-off-by: Nicolas Ferre --- arch/arm/mach-at91/cpuidle.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/mach-at91/cpuidle.c b/arch/arm/mach-at91/cpuidle.c index 69f9e3bbf4e5..4ec6a6d9b9be 100644 --- a/arch/arm/mach-at91/cpuidle.c +++ b/arch/arm/mach-at91/cpuidle.c @@ -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",