On Sat, Feb 27, 2016 at 5:31 PM, Rafael J. Wysocki <rjw@xxxxxxxxxxxxx> wrote:
> On Wednesday, February 24, 2016 04:22:27 PM Derek Basehore wrote:
>> This tries to runtime suspend devices that are still active for direct
>> complete. This is for cases such as autosuspend delays which leaves
>> devices able to runtime suspend but still active. It's beneficial in
>> this case to runtime suspend the device to take advantage of direct
>> complete when possible.
>>
>> Signed-off-by: Derek Basehore <dbasehore@xxxxxxxxxxxx>
>> Reviewed-by: Eric Caruso <ejcaruso@xxxxxxxxxxxx>
>> ---
>> drivers/base/power/main.c | 7 ++++++-
>> 1 file changed, 6 insertions(+), 1 deletion(-)
>>
>> diff --git a/drivers/base/power/main.c b/drivers/base/power/main.c
>> index e0017d9..9693032 100644
>> --- a/drivers/base/power/main.c
>> +++ b/drivers/base/power/main.c
>> @@ -1380,7 +1380,12 @@ static int __device_suspend(struct device *dev, pm_message_t state, bool async)
>> goto Complete;
>>
>> if (dev->power.direct_complete) {
>> - if (pm_runtime_status_suspended(dev)) {
>> + /*
>> + * Check if we're runtime suspended. If not, try to runtime
>> + * suspend for autosuspend cases.
>> + */
>> + if (pm_runtime_status_suspended(dev) ||
>> + !pm_runtime_suspend(dev)) {
>> pm_runtime_disable(dev);
>> if (pm_runtime_status_suspended(dev))
>> goto Complete;
>>
>
> This can be done somewhat simpler, because pm_runtime_suspend() will check
> if the device has already been suspended:
>
> ret = pm_runtime_suspend(dev);
> if (ret >= 0) {
>
> and you don't need the extra pm_runtime_status_suspended(dev) check.
>
> Thanks,
> Rafael
>
I'll look into simplifying it for the next patch set.
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