Re: [PATCH v3 19/24] gpio: remove unnecessary checks from gpiod_to_chip()

[Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>]

On Thu, Feb 08, 2024 at 10:59:15AM +0100, Bartosz Golaszewski wrote:
> From: Bartosz Golaszewski <bartosz.golaszewski@xxxxxxxxxx>
> 
> We don't need to check the gdev pointer in struct gpio_desc - it's
> always assigned and never cleared. It's also pointless to check
> gdev->chip before we actually serialize access to it.

...

>  struct gpio_chip *gpiod_to_chip(const struct gpio_desc *desc)
>  {
> -	if (!desc || !desc->gdev)
> +	if (!desc)

Wondering if it makes sense to align with the below and use IS_ERR_OR_NULL() check.

>  		return NULL;
>  	return desc->gdev->chip;

...

> -	if (!desc || IS_ERR(desc) || !desc->gdev || !desc->gdev->chip)
> +	if (!desc || IS_ERR(desc))

IS_ERR_OR_NULL()

>  		return -EINVAL;
>  
>  	gc = desc->gdev->chip;

-- 
With Best Regards,
Andy Shevchenko