[PATCH] at91: cpuidle: Fix target_residency

[Daniel Lezcano]

The following commit:

commit 7e348b9012522fa0efd854d20d210d5e57fcedd1
Author: Robert Lee <rob.lee at 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 a zero to the state1 (suspend) target residency.

[ ... ]

+       .states[1]              = {
+               .enter                  = at91_enter_idle,
+               .exit_latency           = 10,
+               .target_residency       = 100000,
+               .flags                  = CPUIDLE_FLAG_TIME_VALID,
+               .name                   = "RAM_SR",
+               .desc                   = "WFI and DDR Self Refresh",
+       },

[ ... ]

-       /* Wait for interrupt and RAM self refresh state */
-       driver->states[1].enter = at91_enter_idle;
-       driver->states[1].exit_latency = 10;
-       driver->states[1].target_residency = 10000;
-       driver->states[1].flags = CPUIDLE_FLAG_TIME_VALID;
-       strcpy(driver->states[1].name, "RAM_SR");
-       strcpy(driver->states[1].desc, "WFI and RAM Self Refresh");

[ ... ]

The cpuidle never enters this state since this commit.

Fix it by setting the value to 10ms again.

Signed-off-by: Daniel Lezcano <daniel.lezcano at linaro.org>
---
 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 69f9e3b..4ec6a6d 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",
-- 
1.7.9.5