linux-kernel - Re: [resend PATCH v4 3/5] clk: mediatek: mt8173: switch mmsys to platform device probing (fwd)

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Message-ID: <alpine.DEB.2.20.1807181651360.3113@hadrien>
Date:   Wed, 18 Jul 2018 16:53:08 +0200 (CEST)
From:   Julia Lawall <julia.lawall@...6.fr>
To:     matthias.bgg@...nel.org
cc:     ulrich.hecht+renesas@...il.com, laurent.pinchart@...asonboard.com,
        ck.hu@...iatek.com, p.zabel@...gutronix.de, airlied@...ux.ie,
        robh+dt@...nel.org, mark.rutland@....com, mturquette@...libre.com,
        sboyd@...eaurora.org, lee.jones@...aro.org, davem@...emloft.net,
        gregkh@...uxfoundation.org, mchehab@...nel.org,
        rdunlap@...radead.org, pi-cheng.chen@...aro.org,
        sean.wang@...iatek.com, linux-clk@...r.kernel.org,
        linux@...linux.org.uk, matthias.bgg@...il.com,
        dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org,
        Matthias Brugger <mbrugger@...e.com>, kbuild-all@...org
Subject: Re: [resend PATCH v4 3/5] clk: mediatek: mt8173: switch mmsys to
 platform device probing (fwd)

Hello,

Please check on whether the kfree in the remove function is still needed.
Also the platform_driver structure has two probe fields.

julia

---------- Forwarded message ----------
Date: Wed, 18 Jul 2018 22:31:13 +0800
From: kbuild test robot <lkp@...el.com>
To: kbuild@...org
Cc: Julia Lawall <julia.lawall@...6.fr>
Subject: Re: [resend PATCH v4 3/5] clk: mediatek: mt8173: switch mmsys to
    platform device probing

In-Reply-To: <20180717220328.792-4-matthias.bgg@...nel.org>
References: <20180717220328.792-4-matthias.bgg@...nel.org>
TO: matthias.bgg@...nel.org

Hi Matthias,

I love your patch! Perhaps something to improve:

[auto build test WARNING on sof-driver-fuweitax/master]
[also build test WARNING on v4.18-rc5 next-20180718]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/matthias-bgg-kernel-org/arm-arm64-mediatek-Fix-mmsys-device-probing/20180718-191916
base:   https://github.com/fuweitax/linux master
:::::: branch date: 3 hours ago
:::::: commit date: 3 hours ago

>> drivers/clk/mediatek/clk-mt8173.c:1195:1-6: WARNING: invalid free of devm_ allocated data
--
>> drivers/clk/mediatek/clk-mt8173.c:1200:48-49: probe: first occurrence line 1201, second occurrence line 1202

# https://github.com/0day-ci/linux/commit/112857d0f58413a87875dfc9e1b43fdfde3b55eb
git remote add linux-review https://github.com/0day-ci/linux
git remote update linux-review
git checkout 112857d0f58413a87875dfc9e1b43fdfde3b55eb
vim +1195 drivers/clk/mediatek/clk-mt8173.c

112857d0 Matthias Brugger 2018-07-18  1189
112857d0 Matthias Brugger 2018-07-18  1190  static int mtk_mmsys_remove(struct platform_device *pdev)
112857d0 Matthias Brugger 2018-07-18  1191  {
112857d0 Matthias Brugger 2018-07-18  1192  	struct mtk_mmsys_priv *private = platform_get_drvdata(pdev);
112857d0 Matthias Brugger 2018-07-18  1193
112857d0 Matthias Brugger 2018-07-18  1194  	kfree(private->clk_data);
112857d0 Matthias Brugger 2018-07-18 @1195  	kfree(private);
112857d0 Matthias Brugger 2018-07-18  1196
112857d0 Matthias Brugger 2018-07-18  1197  	return 0;
29859d93 James Liao       2015-05-20  1198  }
112857d0 Matthias Brugger 2018-07-18  1199
112857d0 Matthias Brugger 2018-07-18 @1200  static struct platform_driver clk_mt8173_mm_drv = {
112857d0 Matthias Brugger 2018-07-18 @1201  	.probe = mtk_mmsys_probe,
112857d0 Matthias Brugger 2018-07-18 @1202  	.probe = mtk_mmsys_remove,
112857d0 Matthias Brugger 2018-07-18  1203  	.driver = {
112857d0 Matthias Brugger 2018-07-18  1204  		.name = "clk-mt8173-mm",
112857d0 Matthias Brugger 2018-07-18  1205  	},
112857d0 Matthias Brugger 2018-07-18  1206  };
112857d0 Matthias Brugger 2018-07-18  1207  module_platform_driver(clk_mt8173_mm_drv);
29859d93 James Liao       2015-05-20  1208

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