linux-kernel - Re: [PATCH v7 5/5] pmdomain: mediatek: Add support for MFlexGraphics

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Message-ID: <202510160411.BLpQNEHZ-lkp@intel.com>
Date: Thu, 16 Oct 2025 04:16:10 +0800
From: kernel test robot <lkp@...el.com>
To: Nicolas Frattaroli <nicolas.frattaroli@...labora.com>,
	AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>,
	Boris Brezillon <bbrezillon@...nel.org>,
	Jassi Brar <jassisinghbrar@...il.com>,
	Chia-I Wu <olvaffe@...il.com>, Chen-Yu Tsai <wenst@...omium.org>,
	Steven Price <steven.price@....com>,
	Liviu Dudau <liviu.dudau@....com>,
	Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
	Maxime Ripard <mripard@...nel.org>,
	Thomas Zimmermann <tzimmermann@...e.de>,
	David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Matthias Brugger <matthias.bgg@...il.com>,
	Kees Cook <kees@...nel.org>,
	"Gustavo A. R. Silva" <gustavoars@...nel.org>,
	Ulf Hansson <ulf.hansson@...aro.org>
Cc: oe-kbuild-all@...ts.linux.dev, kernel@...labora.com,
	dri-devel@...ts.freedesktop.org, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-mediatek@...ts.infradead.org, linux-hardening@...r.kernel.org,
	linux-pm@...r.kernel.org,
	Nicolas Frattaroli <nicolas.frattaroli@...labora.com>
Subject: Re: [PATCH v7 5/5] pmdomain: mediatek: Add support for MFlexGraphics

Hi Nicolas,

kernel test robot noticed the following build warnings:

[auto build test WARNING on 40a3abb0f3e5229996c8ef0498fc8d8a0c2bd64f]

url:    https://github.com/intel-lab-lkp/linux/commits/Nicolas-Frattaroli/dt-bindings-gpu-mali-valhall-csf-add-mediatek-mt8196-mali-variant/20251015-165256
base:   40a3abb0f3e5229996c8ef0498fc8d8a0c2bd64f
patch link:    https://lore.kernel.org/r/20251015-mt8196-gpufreq-v7-5-0a6435da2080%40collabora.com
patch subject: [PATCH v7 5/5] pmdomain: mediatek: Add support for MFlexGraphics
config: arm64-randconfig-003-20251016 (https://download.01.org/0day-ci/archive/20251016/202510160411.BLpQNEHZ-lkp@intel.com/config)
compiler: aarch64-linux-gcc (GCC) 10.5.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251016/202510160411.BLpQNEHZ-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202510160411.BLpQNEHZ-lkp@intel.com/

All warnings (new ones prefixed by >>):

   In file included from include/linux/clk-provider.h:9,
                    from drivers/pmdomain/mediatek/mtk-mfg-pmdomain.c:10:
   drivers/pmdomain/mediatek/mtk-mfg-pmdomain.c: In function 'mtk_mfg_probe':
>> include/linux/of.h:138:51: warning: 'shmem' is used uninitialized in this function [-Wuninitialized]
     138 | DEFINE_FREE(device_node, struct device_node *, if (_T) of_node_put(_T))
         |                                                   ^
   drivers/pmdomain/mediatek/mtk-mfg-pmdomain.c:877:22: note: 'shmem' was declared here
     877 |  struct device_node *shmem __free(device_node);
         |                      ^~~~~


vim +/shmem +138 include/linux/of.h

0829f6d1f69e4f2 Pantelis Antoniou 2013-12-13  126  
0f22dd395fc473c Grant Likely      2012-02-15  127  #ifdef CONFIG_OF_DYNAMIC
0f22dd395fc473c Grant Likely      2012-02-15  128  extern struct device_node *of_node_get(struct device_node *node);
0f22dd395fc473c Grant Likely      2012-02-15  129  extern void of_node_put(struct device_node *node);
0f22dd395fc473c Grant Likely      2012-02-15  130  #else /* CONFIG_OF_DYNAMIC */
3ecdd0515287afb Rob Herring       2011-12-13  131  /* Dummy ref counting routines - to be implemented later */
3ecdd0515287afb Rob Herring       2011-12-13  132  static inline struct device_node *of_node_get(struct device_node *node)
3ecdd0515287afb Rob Herring       2011-12-13  133  {
3ecdd0515287afb Rob Herring       2011-12-13  134  	return node;
3ecdd0515287afb Rob Herring       2011-12-13  135  }
0f22dd395fc473c Grant Likely      2012-02-15  136  static inline void of_node_put(struct device_node *node) { }
0f22dd395fc473c Grant Likely      2012-02-15  137  #endif /* !CONFIG_OF_DYNAMIC */
9448e55d032d99a Jonathan Cameron  2024-02-25 @138  DEFINE_FREE(device_node, struct device_node *, if (_T) of_node_put(_T))
3ecdd0515287afb Rob Herring       2011-12-13  139  

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki