linux-kernel - Re: [PATCH 2/2] backlight: aw99706: Add support for Awinic AW99706 backlight

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Message-ID: <202510271932.kN86aCge-lkp@intel.com>
Date: Mon, 27 Oct 2025 20:06:18 +0800
From: kernel test robot <lkp@...el.com>
To: Junjie Cao <caojunjie650@...il.com>, Lee Jones <lee@...nel.org>,
	Daniel Thompson <danielt@...nel.org>,
	Jingoo Han <jingoohan1@...il.com>, Pavel Machek <pavel@...nel.org>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>, Helge Deller <deller@....de>
Cc: oe-kbuild-all@...ts.linux.dev, dri-devel@...ts.freedesktop.org,
	linux-leds@...r.kernel.org, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-fbdev@...r.kernel.org,
	Junjie Cao <caojunjie650@...il.com>,
	Pengyu Luo <mitltlatltl@...il.com>
Subject: Re: [PATCH 2/2] backlight: aw99706: Add support for Awinic AW99706
 backlight

Hi Junjie,

kernel test robot noticed the following build warnings:

[auto build test WARNING on lee-backlight/for-backlight-next]
[also build test WARNING on lee-leds/for-leds-next linus/master lee-backlight/for-backlight-fixes v6.18-rc3 next-20251027]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Junjie-Cao/backlight-aw99706-Add-support-for-Awinic-AW99706-backlight/20251026-214135
base:   https://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight.git for-backlight-next
patch link:    https://lore.kernel.org/r/20251026123923.1531727-3-caojunjie650%40gmail.com
patch subject: [PATCH 2/2] backlight: aw99706: Add support for Awinic AW99706 backlight
config: m68k-allyesconfig (https://download.01.org/0day-ci/archive/20251027/202510271932.kN86aCge-lkp@intel.com/config)
compiler: m68k-linux-gcc (GCC) 15.1.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251027/202510271932.kN86aCge-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/202510271932.kN86aCge-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> drivers/video/backlight/aw99706.c:468:12: warning: 'aw99706_resume' defined but not used [-Wunused-function]
     468 | static int aw99706_resume(struct device *dev)
         |            ^~~~~~~~~~~~~~
>> drivers/video/backlight/aw99706.c:461:12: warning: 'aw99706_suspend' defined but not used [-Wunused-function]
     461 | static int aw99706_suspend(struct device *dev)
         |            ^~~~~~~~~~~~~~~


vim +/aw99706_resume +468 drivers/video/backlight/aw99706.c

   460	
 > 461	static int aw99706_suspend(struct device *dev)
   462	{
   463		struct aw99706_device *aw = dev_get_drvdata(dev);
   464	
   465		return aw99706_update_brightness(aw, 0);
   466	}
   467	
 > 468	static int aw99706_resume(struct device *dev)
   469	{
   470		struct aw99706_device *aw = dev_get_drvdata(dev);
   471	
   472		return aw99706_hw_init(aw);
   473	}
   474	

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