Re: [PATCH v2 1/2] input: rotary-encoder: switch to devm_* allocation of GPIOs and IRQs

[Dmitry Torokhov <dmitry.torokhov@gmail.com>]

On Wed, Jul 25, 2012 at 09:43:47AM +0200, Daniel Mack wrote:
> @@ -263,12 +243,7 @@ exit_free_mem:
>  static int __devexit rotary_encoder_remove(struct platform_device *pdev)
>  {
>  	struct rotary_encoder *encoder = platform_get_drvdata(pdev);
> -	struct rotary_encoder_platform_data *pdata = pdev->dev.platform_data;
>  
> -	free_irq(encoder->irq_a, encoder);
> -	free_irq(encoder->irq_b, encoder);
> -	gpio_free(pdata->gpio_a);
> -	gpio_free(pdata->gpio_b);
>  	input_unregister_device(encoder->input);

Another botched devm_ conversion. *sigh*

Input device gone, IRQ arrives, kernel goes oops, machine hangs hard.

Please, do not use devm_ interfaces unless... Actually, just do not use
nor suggest devm_interfaces until all resources are devm-ized. Mixing 2
styles of releasing resources leads to trouble.

Thanks.

-- 
Dmitry