Hi Sonic,

On Wed, Feb 04, 2015 at 03:58:04PM +0800, Sonic Zhang wrote:
> @@ -102,7 +95,7 @@ static int bfin_rotary_probe(struct platform_device *pdev)
>               return -EINVAL;
>       }
>  
> -     error = peripheral_request_list(per_cnt, dev_name(&pdev->dev));
> +     error = peripheral_request_list(pdata->pin_list, dev_name(&pdev->dev));

I do not think the driver will be happy with pdata->oin_list == NULL
here.

>       if (error) {
>               dev_err(&pdev->dev, "requesting peripherals failed\n");
>               return error;
> @@ -197,6 +190,7 @@ out1:
>  
>  static int bfin_rotary_remove(struct platform_device *pdev)
>  {
> +     struct bfin_rotary_platform_data *pdata = dev_get_platdata(&pdev->dev);

Why do you need this change?

>       struct bfin_rot *rotary = platform_get_drvdata(pdev);
>  
>       bfin_write_CNT_CONFIG(0);
> @@ -204,7 +198,7 @@ static int bfin_rotary_remove(struct platform_device 
> *pdev)
>  
>       free_irq(rotary->irq, pdev);
>       input_unregister_device(rotary->input);
> -     peripheral_free_list(per_cnt);
> +     peripheral_free_list(pdata->pin_list);

Same here: NULL will cause severe indigestion.

Thanks.

-- 
Dmitry
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