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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <YyCtdw14JijxsEQ4@smile.fi.intel.com>
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