Re: [PATCH] regmap: irq: Enable irq retriggering for nested irqs

[Nishanth Menon]

On 02/26/2016 09:53 AM, Grygorii Strashko wrote:
> When nested interrupts are handled with regmap irq framework, we need to
> mark the interrupts to be resend for pending interrupts on enable_irq.
> Else the events might be lost for nested irqs.
> 
> Signed-off-by: Grygorii Strashko <grygorii.strashko@xxxxxx>
> ---
>  drivers/base/regmap/regmap-irq.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/base/regmap/regmap-irq.c b/drivers/base/regmap/regmap-irq.c
> index 9b0d202..8d9004d 100644
> --- a/drivers/base/regmap/regmap-irq.c
> +++ b/drivers/base/regmap/regmap-irq.c
> @@ -379,6 +379,7 @@ static int regmap_irq_map(struct irq_domain *h, unsigned int virq,
>  	irq_set_chip_data(virq, data);
>  	irq_set_chip(virq, &data->irq_chip);
>  	irq_set_nested_thread(virq, 1);
> +	irq_set_parent(virq, data->irq);
>  	irq_set_noprobe(virq);
>  
>  	return 0;
> 

This is part of the fixes seen to be needed for VBUS irq over Palmas
seen on BeagleBoard-X15.

this patch was part of an internal series which finally resolved the
crash (and associated hang) on X15 resume path.

Tested-by: Nishanth Menon <nm@xxxxxx>

-- 
Regards,
Nishanth Menon