Re: [PATCH] iio: Use parens with sizeof

[Joe Perches]

On Sun, 2022-07-17 at 11:34 -0400, Joe Simmons-Talbott wrote:
> Prefer 'sizeof(var)' over 'sizeof var' as reported by checkpatch.pl.

unrelated trivia:

> diff --git a/drivers/iio/industrialio-trigger.c b/drivers/iio/industrialio-trigger.c
[]
> @@ -368,7 +368,7 @@ struct iio_poll_func
>  	va_list vargs;
>  	struct iio_poll_func *pf;
>  
> -	pf = kmalloc(sizeof *pf, GFP_KERNEL);
> +	pf = kmalloc(sizeof(*pf), GFP_KERNEL);
>  	if (pf == NULL)
>  		return NULL;
>  	va_start(vargs, fmt);
> @@ -560,7 +560,7 @@ struct iio_trigger *viio_trigger_alloc(struct device *parent,
>  	struct iio_trigger *trig;
>  	int i;
>  
> -	trig = kzalloc(sizeof *trig, GFP_KERNEL);
> +	trig = kzalloc(sizeof(*trig), GFP_KERNEL);
>  	if (!trig)
>  		return NULL;

It'd be nice to be consistent with the allocation return test.

Please pick one of:

	if (ptr == NULL)
or
	if (!ptr)		// my preference