[RFC][PATCH 4/9] ARM: OMAP3: define cpuidle statically

Daniel Lezcano daniel.lezcano at linaro.org
Fri Mar 23 12:41:48 UTC 2012


On 03/23/2012 01:35 PM, Jean Pihet wrote:
> On Fri, Mar 23, 2012 at 10:26 AM, Daniel Lezcano
> <daniel.lezcano at linaro.org>  wrote:
>> Use the new cpuidle API and define in the driver the states.
>>
>> Signed-off-by: Daniel Lezcano<daniel.lezcano at linaro.org>
>> ---

[ ... ]

>>         /*
>>          * Erratum i583: implementation for ES rev<  Es1.2 on 3630. We cannot
> C7 is enabled only if the errata does not apply.
> This causes a problem with the statically defined C-states and also
> with the per C-state sysfs disable knob. A consistency check should be
> performed before trying to enter a state.

In the patch 5/9, I decrement the state_count if the errata applies. I 
believe it is still compatible with the static C-states.

>> @@ -338,7 +372,6 @@ int __init omap3_idle_init(void)
>>         drv->state_count = OMAP3_NUM_STATES;
>>         cpuidle_register_driver(&omap3_idle_driver);
>>
>> -       dev->state_count = OMAP3_NUM_STATES;
>>         if (cpuidle_register_device(dev)) {
>>                 printk(KERN_ERR "%s: CPUidle register device failed\n",
>>                        __func__);
>> --
>> 1.7.5.4
>>
>
> Thanks!
> Jean


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