[RFC] [PATCH 3/3] IRQ: irq domain: defer of irq ressoure resolve at platform_drv_probe

[Alexander Sverdlin]

Hi!

On 05/28/2013 05:08 PM, ext Jean-Christophe PLAGNIOL-VILLARD wrote:
> --- a/drivers/of/platform.c
> +++ b/drivers/of/platform.c
> @@ -131,6 +131,32 @@ void of_device_make_bus_id(struct device *dev)
>  }
>  
>  /**
> + * of_device_alloc_irq - initialize irq of an platfrom_device
      ^^^^^^^^^^^^^^^^^^^
> + * @dev: plaform_device to work on
> + */
> +int of_device_init_irq(struct platform_device *dev)
       ^^^^^^^^^^^^^^^^^^

I think, mismatch in function names in the comment and function itself wasn't yet reported...

> +{
> +	struct device_node *np = dev->dev.of_node;
> +	int num_irq;
> +	int ret;
> +	struct resource *res = dev->resource;
> +
> +	if (!np)
> +		return 0;
> +
> +	num_irq = of_irq_count(np);
> +	if (!num_irq)
> +		return 0;
> +
> +	res += dev->num_resources - num_irq;
> +	ret = of_irq_to_resource_table(np, res, num_irq);
> +	if (ret != num_irq)
> +		return -EPROBE_DEFER;
> +
> +	return 0;
> +}
> +
> +/**
>   * of_device_alloc - Allocate and initialize an of_device
>   * @np: device node to assign to device
>   * @bus_id: Name to assign to the device.  May be null to use default name.

I was trying to get attention to this problem already on the list in January-February time frame, but
without success... I will give your code a try... We have exactly these chained interrupt controllers dependencies
and irq_create_of_mapping() was failing... I'll inform you on the test results...

-- 
Best regards,
Alexander Sverdlin.