linux-kernel - Re: [PATCH 2/3] gpio: 104-idio-16: Utilize the idio-16 GPIO library

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Date:   Tue, 13 Sep 2022 19:19:03 +0300
From:   Andy Shevchenko <andriy.shevchenko@...el.com>
To:     William Breathitt Gray <william.gray@...aro.org>
Cc:     brgl@...ev.pl, linus.walleij@...aro.org,
        linux-kernel@...r.kernel.org, linux-gpio@...r.kernel.org
Subject: Re: [PATCH 2/3] gpio: 104-idio-16: Utilize the idio-16 GPIO library

On Sun, Sep 11, 2022 at 04:34:39PM -0400, William Breathitt Gray wrote:
> The ACCES 104-IDIO-16 device is part of the ACCES IDIO-16 family, so the
> idio-16 GPIO library module is selected and utilized to consolidate
> code.

> +	/* Reading output signals is not supported */
> +	if (offset < IDIO_16_NOUT)
>  		return -EINVAL;

I see it's in the original code, but isn't it possible to cache and return
cached value in such cases?

-- 
With Best Regards,
Andy Shevchenko