Jon,

On Tue, 10 Nov 2015, Jon Hunter wrote:
>       void            (*irq_suspend)(struct irq_data *data);
>       void            (*irq_resume)(struct irq_data *data);
> +     int             (*irq_runtime_suspend)(struct irq_data *data);
> +     int             (*irq_runtime_resume)(struct irq_data *data);
>       void            (*irq_pm_shutdown)(struct irq_data *data);

So this is the second patch within a few days which adds that just
with different names:

http://lkml.kernel.org/r/[email protected]

Can you folks please tell me which of the names is the correct one?
  
> +/* Inline functions for support of irq chips that require runtime pm */
> +static inline int chip_runtime_resume(struct irq_desc *desc)
> +{
> +     if (!desc->irq_data.chip->irq_runtime_resume)
> +             return 0;
> +
> +     return desc->irq_data.chip->irq_runtime_resume(&desc->irq_data);
> +}
> +
> +static inline int chip_runtime_suspend(struct irq_desc *desc)
> +{
> +     if (!desc->irq_data.chip->irq_runtime_suspend)
> +             return 0;
> +
> +     return desc->irq_data.chip->irq_runtime_suspend(&desc->irq_data);

We really don't need a return value for that one.

> +}
> +
>  #define _IRQ_DESC_CHECK              (1 << 0)
>  #define _IRQ_DESC_PERCPU     (1 << 1)
>  
> diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
> index 0eebaeef317b..66e33df73140 100644
> --- a/kernel/irq/manage.c
> +++ b/kernel/irq/manage.c
> @@ -1116,6 +1116,10 @@ __setup_irq(unsigned int irq, struct irq_desc *desc, 
> struct irqaction *new)
>       if (!try_module_get(desc->owner))
>               return -ENODEV;
>  
> +     ret = chip_runtime_resume(desc);
> +     if (ret < 0)
> +             return ret;

Leaks module ref count.

> +
>       new->irq = irq;
>  
>       /*
> @@ -1393,6 +1397,7 @@ out_thread:
>               put_task_struct(t);
>       }
>  out_mput:
> +     chip_runtime_suspend(desc);
>       module_put(desc->owner);
>       return ret;
>  }
> @@ -1506,6 +1511,7 @@ static struct irqaction *__free_irq(unsigned int irq, 
> void *dev_id)
>               }
>       }
>  
> +     chip_runtime_suspend(desc);
>       module_put(desc->owner);
>       kfree(action->secondary);
>       return action;
> @@ -1792,6 +1798,7 @@ static struct irqaction *__free_percpu_irq(unsigned int 
> irq, void __percpu *dev_
>  
>       unregister_handler_proc(irq, action);
>  
> +     chip_runtime_suspend(desc);

Where is the corresponding call in request_percpu_irq() ?

Can you folks please agree on something which is correct and complete?

Thanks,

        tglx
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