On Mon, Aug 19, 2019 at 09:26:37PM +1000, Ian W MORRISON wrote:
> Patch ca876c7483b6 "gpiolib-acpi: make sure we trigger edge events at
> least once on boot" causes the MINIX family of mini PCs to fail to boot
> resulting in a "black screen".
> 
> This patch excludes MINIX devices from executing this trigger in order
> to successfully boot.

Thanks for an update.

> Cc: [email protected]
> Signed-off-by: Ian W MORRISON <[email protected]>
> Reviewed-by: Hans de Goede <[email protected]>

> Reviewed-by: Andy Shevchenko <[email protected]>

Hmm... Did I really give the tag?
Too many stuff is going on, anyway, please consider more comments below.

First of all, the subject should start from "gpiolib: acpi: " prefix.

Then, Fixes tag seems to be missed.

> +/*
> + * Run deferred acpi_gpiochip_request_irqs()
> + * but exclude devices known to fail

Missed period.

> +*/

Missed leading space (the column of stars).

>  static int acpi_gpio_handle_deferred_request_irqs(void)
>  {
>       struct acpi_gpio_chip *acpi_gpio, *tmp;
> +     const struct dmi_system_id *dmi_id;
>  
> -     mutex_lock(&acpi_gpio_deferred_req_irqs_lock);
> -     list_for_each_entry_safe(acpi_gpio, tmp,
> +     dmi_id = dmi_first_match(skip_deferred_request_irqs_table);
> +     if (dmi_id)
> +             return 0;

The idea of positive check is exactly for...

> +     else {

...getting rid of this redundant 'else' followed by unneeded level of 
indentation.

> +             mutex_lock(&acpi_gpio_deferred_req_irqs_lock);
> +             list_for_each_entry_safe(acpi_gpio, tmp,
>                                &acpi_gpio_deferred_req_irqs_list,
>                                deferred_req_irqs_list_entry)
> -             acpi_gpiochip_request_irqs(acpi_gpio);
> +                     acpi_gpiochip_request_irqs(acpi_gpio);
>  
> -     acpi_gpio_deferred_req_irqs_done = true;
> -     mutex_unlock(&acpi_gpio_deferred_req_irqs_lock);
> +             acpi_gpio_deferred_req_irqs_done = true;
> +             mutex_unlock(&acpi_gpio_deferred_req_irqs_lock);
> +     }
>  
>       return 0;
>  }

-- 
With Best Regards,
Andy Shevchenko


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