Re: [PATCH RESEND v2 2/2] cpuidle: tegra: Remove do_idle firmware call

[Dmitry Osipenko <digetx@gmail.com>]

02.03.2021 15:45, Daniel Lezcano пишет:
> On 02/03/2021 10:54, Dmitry Osipenko wrote:
>> The do_idle firmware call is unused by all Tegra SoCs, hence remove it in
>> order to keep driver's code clean.
>>
>> Tested-by: Anton Bambura <jenneron@protonmail.com> # TF701 T114
>> Tested-by: Matt Merhar <mattmerhar@protonmail.com> # Ouya T30
>> Tested-by: Peter Geis <pgwipeout@gmail.com> # Ouya T30
>> Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
>> ---
>>
>> Changelog:
>>
>> v2: - No changes. V1 got no attention, hence re-sending.
>>
>>  drivers/cpuidle/cpuidle-tegra.c | 13 +------------
>>  1 file changed, 1 insertion(+), 12 deletions(-)
>>
>> diff --git a/drivers/cpuidle/cpuidle-tegra.c b/drivers/cpuidle/cpuidle-tegra.c
>> index 29c5e83500d3..508bd9f23792 100644
>> --- a/drivers/cpuidle/cpuidle-tegra.c
>> +++ b/drivers/cpuidle/cpuidle-tegra.c
>> @@ -48,11 +48,6 @@ enum tegra_state {
>>  static atomic_t tegra_idle_barrier;
>>  static atomic_t tegra_abort_flag;
>>  
>> -static inline bool tegra_cpuidle_using_firmware(void)
>> -{
>> -	return firmware_ops->prepare_idle && firmware_ops->do_idle;
>> -}
>> -
>>  static void tegra_cpuidle_report_cpus_state(void)
>>  {
>>  	unsigned long cpu, lcpu, csr;
>> @@ -139,10 +134,6 @@ static int tegra_cpuidle_c7_enter(void)
>>  	if (err && err != -ENOSYS)
>>  		return err;
>>  
>> -	err = call_firmware_op(do_idle, 0);
>> -	if (err != -ENOSYS)
>> -		return err;
>> -
>>  	return cpu_suspend(0, tegra30_pm_secondary_cpu_suspend);
>>  }
>>  
>> @@ -356,9 +347,7 @@ static int tegra_cpuidle_probe(struct platform_device *pdev)
>>  	 * is disabled.
>>  	 */
>>  	if (!IS_ENABLED(CONFIG_PM_SLEEP)) {
>> -		if (!tegra_cpuidle_using_firmware())
>> -			tegra_cpuidle_disable_state(TEGRA_C7);
> 
> So firmware_ops->do_idle is always NULL, thus
> tegra_cpuidle_using_firmware() is always false and
> tegra_cpuidle_disable_state() always called, right ?

Yes, the tegra_cpuidle_disable_state(TEGRA_C7) is always
called if CONFIG_PM_SLEEP is disabled in kernel config.