On Thu, May 04, 2017 at 09:49:59PM +0800, Icenowy Zheng wrote:
>  static const struct of_device_id sun4i_a10_pinctrl_match[] = {
> -	{ .compatible = "allwinner,sun4i-a10-pinctrl", },
> +	{
> +		.compatible = "allwinner,sun4i-a10-pinctrl",
> +		.data = (void *)PINCTRL_SUN4I_A10
> +	},
> +	{
> +		.compatible = "allwinner,sun7i-a20-pinctrl",
> +		.data = (void *)PINCTRL_SUN7I_A20
> +	},
>  	{}
>  };

This means you're going to have two drivers probing for the same
device: this driver, and the old one. This is not ok, and probably
introduces some corner cases.

Maxime

-- 
Maxime Ripard, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com