linux-kernel - Re: [PATCH v5 2/2] input: zinitix: Add touchkey support

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: <ZpsE8mQpahxBQRE-@google.com>
Date: Fri, 19 Jul 2024 17:29:38 -0700
From: Dmitry Torokhov <dmitry.torokhov@...il.com>
To: Nikita Travkin <nikita@...n.ru>
Cc: Rob Herring <robh+dt@...nel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Michael Srba <Michael.Srba@...nam.cz>,
	Linus Walleij <linus.walleij@...aro.org>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	linux-input@...r.kernel.org, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v5 2/2] input: zinitix: Add touchkey support

On Wed, Jul 17, 2024 at 06:55:34PM +0500, Nikita Travkin wrote:
> Zinitix touch controllers can use some of the sense lines for virtual
> keys (like those found on many phones). Add support for those keys.
> 
> Reviewed-by: Linus Walleij <linus.walleij@...aro.org>
> Signed-off-by: Nikita Travkin <nikita@...n.ru>

Applied, thank you. However:

> -->  
> +	if (le16_to_cpu(touch_event.status) & BIT_ICON_EVENT) {
> +		error = zinitix_read_data(bt541->client, ZINITIX_ICON_STATUS_REG,
> +					  &icon_events, sizeof(icon_events));
> +		if (error) {
> +			dev_err(&client->dev, "Failed to read icon events\n");
> +			goto out;
> +		}

I wonder, would it make sense (and be more efficient) to issue a single
read of size sizeof(struct touch_event) + sizeof(icon_events) and the
parse the data based on touch_event.status?

Thanks.

-- 
Dmitry