linux-kernel - Re: [PATCH v3 18/23] regulator: add s2dos05 regulator support

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Message-ID: <29d55d6a-8b4c-4374-b5df-64f22d846ac9@kernel.org>
Date: Thu, 20 Jun 2024 18:08:58 +0200
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Dzmitry Sankouski <dsankouski@...il.com>,
 Sebastian Reichel <sre@...nel.org>, Bjorn Andersson <andersson@...nel.org>,
 Michael Turquette <mturquette@...libre.com>, Stephen Boyd
 <sboyd@...nel.org>, Neil Armstrong <neil.armstrong@...aro.org>,
 Jessica Zhang <quic_jesszhan@...cinc.com>, Sam Ravnborg <sam@...nborg.org>,
 Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
 Maxime Ripard <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>,
 David Airlie <airlied@...il.com>, Daniel Vetter <daniel@...ll.ch>,
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
 Conor Dooley <conor+dt@...nel.org>, Lee Jones <lee@...nel.org>,
 Dmitry Torokhov <dmitry.torokhov@...il.com>, Pavel Machek <pavel@....cz>,
 Liam Girdwood <lgirdwood@...il.com>, Mark Brown <broonie@...nel.org>,
 Uwe Kleine-König <ukleinek@...nel.org>,
 Konrad Dybcio <konrad.dybcio@...aro.org>,
 Chanwoo Choi <cw00.choi@...sung.com>, phone-devel@...r.kernel.org
Cc: linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org,
 linux-arm-msm@...r.kernel.org, linux-clk@...r.kernel.org,
 dri-devel@...ts.freedesktop.org, devicetree@...r.kernel.org,
 linux-input@...r.kernel.org, linux-leds@...r.kernel.org,
 linux-pwm@...r.kernel.org, linux-samsung-soc@...r.kernel.org
Subject: Re: [PATCH v3 18/23] regulator: add s2dos05 regulator support

On 18/06/2024 15:59, Dzmitry Sankouski wrote:
> S2dos05 has 1 buck and 4 LDO regulators, used for powering
> panel/touchscreen.
> 
> Signed-off-by: Dzmitry Sankouski <dsankouski@...il.com>


> diff --git a/drivers/regulator/s2dos05-regulator.c b/drivers/regulator/s2dos05-regulator.c
> new file mode 100644
> index 000000000000..3c58a1bd2262
> --- /dev/null
> +++ b/drivers/regulator/s2dos05-regulator.c
> @@ -0,0 +1,362 @@
> +// SPDX-License-Identifier: GPL-2.0+
> +/*
> + * s2dos05.c - Regulator driver for the Samsung s2dos05
> + *
> + * Copyright (C) 2016 Samsung Electronics

Not happy. You upstream old issues. :( Please drop all junk Samsung code.

> + * Copyright (C) 2023 Dzmitry Sankouski <dsankouski@...il.com>
> + *
> + */

...

> +
> +	return ret;
> +
> +err_data:
> +	devm_kfree(dev, (void *)s2dos05);

Why?

> +	kfree(s2dos05);

Please test this first. This is obviously wrong and having such trivial
issue makes me question what else is in this Samsung code.


Best regards,
Krzysztof