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Date: Mon, 20 May 2024 15:02:37 +0530
From: Viresh Kumar <viresh.kumar@linaro.org>
To: Javier Carrasco <javier.carrasco.cruz@gmail.com>
Cc: Yangtao Li <tiny.windzz@gmail.com>,
	"Rafael J. Wysocki" <rafael@kernel.org>,
	Chen-Yu Tsai <wens@csie.org>,
	Jernej Skrabec <jernej.skrabec@gmail.com>,
	Samuel Holland <samuel@sholland.org>,
	Andre Przywara <andre.przywara@arm.com>,
	Jonathan Cameron <Jonathan.Cameron@huawei.com>,
	linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	linux-sunxi@lists.linux.dev, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 0/2] cpufreq: sun50i: fix memory leak and remove
 of_node_put()
Message-ID: <20240520093237.fucml6sp2ziygyav@vireshk-i7>
References: <20240503-sun50i-cpufreq-nvmem-cleanup-v1-0-0a2352cac46b@gmail.com>
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In-Reply-To: <20240503-sun50i-cpufreq-nvmem-cleanup-v1-0-0a2352cac46b@gmail.com>

On 03-05-24, 19:52, Javier Carrasco wrote:
> This series fixes a memory leak by means of the _scoped version of the
> for_each_child_of_node() loop, which was recently introduced with
> 34af4554fb0c ("of: Introduce for_each_*_child_of_node_scoped() to
> automate of_node_put() handling").
> 
> The new approach is still not widely used, but this might be a good
> occasion to use it in a driver because it actually fixes a bug, and
> the loop is rather simple.
> 
> The creator of the new macro was added to the discussion in case the
> new approach is still not mature enough, even for such simple case.
> 
> Additionally, the existing uses of of_node_put() have been removed to
> favour the _free() cleanup handler, which reduces the chances of having
> any other memory leak because some of_node_put() is missing as well as
> simplifies the current code.
> 
> I don't have the real hardware to test the series, so I "faked" the node
> in a device tree for an arm64 device (Rockchip) and hacked the driver
> to get to run dt_has_supported_hw(). The new implementation works as
> expected, but if someone wants to test it with the proper SoC,
> additional tests are always welcome. The same applies for the removals
> of of_node_put().
> 
> Signed-off-by: Javier Carrasco <javier.carrasco.cruz@gmail.com>
> ---
> Javier Carrasco (2):
>       cpufreq: sun50i: fix memory leak in dt_has_supported_hw()
>       cpufreq: sun50i: replace of_node_put() with automatic cleanup handler

Applied. Thanks.

-- 
viresh