linux-kernel - Re: [PATCH v3 2/2] usb: dwc3: eic7700: Add EIC7700 USB driver

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Message-ID: <202509160138.P7gRM9Bt-lkp@intel.com>
Date: Tue, 16 Sep 2025 01:31:11 +0800
From: kernel test robot <lkp@...el.com>
To: caohang@...incomputing.com, gregkh@...uxfoundation.org, robh@...nel.org,
	krzk+dt@...nel.org, conor+dt@...nel.org, Thinh.Nguyen@...opsys.com,
	p.zabel@...gutronix.de, linux-kernel@...r.kernel.org,
	linux-usb@...r.kernel.org, devicetree@...r.kernel.org
Cc: oe-kbuild-all@...ts.linux.dev, ningyu@...incomputing.com,
	linmin@...incomputing.com, pinkesh.vaghela@...fochips.com,
	Hang Cao <caohang@...incomputing.com>,
	Senchuan Zhang <zhangsenchuan@...incomputing.com>
Subject: Re: [PATCH v3 2/2] usb: dwc3: eic7700: Add EIC7700 USB driver

Hi,

kernel test robot noticed the following build warnings:

[auto build test WARNING on usb/usb-testing]
[also build test WARNING on usb/usb-next usb/usb-linus robh/for-next pza/reset/next linus/master v6.17-rc6 next-20250912]
[cannot apply to pza/imx-drm/next]
[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/caohang-eswincomputing-com/dt-bindings-usb-Add-ESWIN-EIC7700-USB-controller/20250915-171407
base:   https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing
patch link:    https://lore.kernel.org/r/20250915091051.2148-1-caohang%40eswincomputing.com
patch subject: [PATCH v3 2/2] usb: dwc3: eic7700: Add EIC7700 USB driver
config: i386-buildonly-randconfig-003-20250915 (https://download.01.org/0day-ci/archive/20250916/202509160138.P7gRM9Bt-lkp@intel.com/config)
compiler: gcc-14 (Debian 14.2.0-19) 14.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250916/202509160138.P7gRM9Bt-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/202509160138.P7gRM9Bt-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> drivers/usb/dwc3/dwc3-eic7700.c:225:12: warning: 'dwc3_eswin_runtime_idle' defined but not used [-Wunused-function]
     225 | static int dwc3_eswin_runtime_idle(struct device *dev)
         |            ^~~~~~~~~~~~~~~~~~~~~~~
>> drivers/usb/dwc3/dwc3-eic7700.c:210:12: warning: 'dwc3_eswin_runtime_resume' defined but not used [-Wunused-function]
     210 | static int dwc3_eswin_runtime_resume(struct device *dev)
         |            ^~~~~~~~~~~~~~~~~~~~~~~~~
>> drivers/usb/dwc3/dwc3-eic7700.c:196:12: warning: 'dwc3_eswin_runtime_suspend' defined but not used [-Wunused-function]
     196 | static int dwc3_eswin_runtime_suspend(struct device *dev)
         |            ^~~~~~~~~~~~~~~~~~~~~~~~~~
>> drivers/usb/dwc3/dwc3-eic7700.c:181:12: warning: 'dwc3_eswin_pm_resume' defined but not used [-Wunused-function]
     181 | static int dwc3_eswin_pm_resume(struct device *dev)
         |            ^~~~~~~~~~~~~~~~~~~~
>> drivers/usb/dwc3/dwc3-eic7700.c:166:12: warning: 'dwc3_eswin_pm_suspend' defined but not used [-Wunused-function]
     166 | static int dwc3_eswin_pm_suspend(struct device *dev)
         |            ^~~~~~~~~~~~~~~~~~~~~


vim +/dwc3_eswin_runtime_idle +225 drivers/usb/dwc3/dwc3-eic7700.c

   165	
 > 166	static int dwc3_eswin_pm_suspend(struct device *dev)
   167	{
   168		struct dwc3 *dwc = dev_get_drvdata(dev);
   169		struct dwc3_eswin *eswin = to_dwc3_eswin(dwc);
   170		int ret;
   171	
   172		ret = dwc3_pm_suspend(&eswin->dwc);
   173		if (ret)
   174			return ret;
   175	
   176		clk_bulk_disable_unprepare(eswin->num_clks, eswin->clks);
   177	
   178		return 0;
   179	}
   180	
 > 181	static int dwc3_eswin_pm_resume(struct device *dev)
   182	{
   183		struct dwc3 *dwc = dev_get_drvdata(dev);
   184		struct dwc3_eswin *eswin = to_dwc3_eswin(dwc);
   185		int ret;
   186	
   187		ret = clk_bulk_prepare_enable(eswin->num_clks, eswin->clks);
   188		if (ret) {
   189			dev_err(dev, "Failed to enable clocks: %d\n", ret);
   190			return ret;
   191		}
   192	
   193		return dwc3_pm_resume(&eswin->dwc);
   194	}
   195	
 > 196	static int dwc3_eswin_runtime_suspend(struct device *dev)
   197	{
   198		struct dwc3 *dwc = dev_get_drvdata(dev);
   199		struct dwc3_eswin *eswin = to_dwc3_eswin(dwc);
   200		int ret;
   201	
   202		ret = dwc3_runtime_suspend(&eswin->dwc);
   203		if (ret)
   204			return ret;
   205	
   206		clk_bulk_disable_unprepare(eswin->num_clks, eswin->clks);
   207		return 0;
   208	}
   209	
 > 210	static int dwc3_eswin_runtime_resume(struct device *dev)
   211	{
   212		struct dwc3 *dwc = dev_get_drvdata(dev);
   213		struct dwc3_eswin *eswin = to_dwc3_eswin(dwc);
   214		int ret;
   215	
   216		ret = clk_bulk_prepare_enable(eswin->num_clks, eswin->clks);
   217		if (ret) {
   218			dev_err(dev, "Failed to enable clocks: %d\n", ret);
   219			return ret;
   220		}
   221	
   222		return dwc3_runtime_resume(&eswin->dwc);
   223	}
   224	
 > 225	static int dwc3_eswin_runtime_idle(struct device *dev)
   226	{
   227		return dwc3_runtime_idle(dev_get_drvdata(dev));
   228	}
   229	

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