linux-kernel - Re: [PATCH v6 02/12] of: base: Add for_each_child_of_node_with_prefix

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 for Android: free password hash cracker in your pocket

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

Message-ID: <Zthasx8VNCw_yj5q@smile.fi.intel.com>
Date: Wed, 4 Sep 2024 16:03:47 +0300
From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To: Chen-Yu Tsai <wenst@...omium.org>
Cc: Rob Herring <robh@...nel.org>, Saravana Kannan <saravanak@...gle.com>,
	Matthias Brugger <matthias.bgg@...il.com>,
	AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>,
	Wolfram Sang <wsa@...nel.org>, Benson Leung <bleung@...omium.org>,
	Tzung-Bi Shih <tzungbi@...nel.org>, Mark Brown <broonie@...nel.org>,
	Liam Girdwood <lgirdwood@...il.com>,
	chrome-platform@...ts.linux.dev, devicetree@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-mediatek@...ts.infradead.org, linux-kernel@...r.kernel.org,
	Douglas Anderson <dianders@...omium.org>,
	Johan Hovold <johan@...nel.org>, Jiri Kosina <jikos@...nel.org>,
	linux-i2c@...r.kernel.org
Subject: Re: [PATCH v6 02/12] of: base: Add
 for_each_child_of_node_with_prefix_scoped()

On Wed, Sep 04, 2024 at 05:00:04PM +0800, Chen-Yu Tsai wrote:
> There are cases where drivers would go through child device nodes and
> operate on only the ones whose node name starts with a given prefix.
> 
> Provide a helper for these users. This will mainly be used in a
> subsequent patch that implements a hardware component prober for I2C
> busses.

...

> +#define for_each_child_of_node_with_prefix_scoped(parent, child, prefix) \
> +	for (struct device_node *child __free(device_node) =		\
> +	     of_get_next_child_with_prefix(parent, NULL, prefix);	\
> +	     child != NULL;						\
> +	     child = of_get_next_child_with_prefix(parent, child, prefix))

I'm wondering if we may drop _scoped from day 1. Yeah, probably a bit confusing
as the rest of APIs without that suffix do require reference count handling on
the loop abrupt.

-- 
With Best Regards,
Andy Shevchenko