[PATCH v5 2/2] usb: dwc3: add generic driver to support flattened

[kernel test robot]

Hi Ze,

kernel test robot noticed the following build warnings:

[auto build test WARNING on d9946fe286439c2aeaa7953b8c316efe5b83d515]

url:    https://github.com/intel-lab-lkp/linux/commits/Ze-Huang/dt-bindings-usb-dwc3-add-support-for-SpacemiT-K1/20250705-210419
base:   d9946fe286439c2aeaa7953b8c316efe5b83d515
patch link:    https://lore.kernel.org/r/20250705-dwc3_generic-v5-2-9dbc53ea53d2%40linux.dev
patch subject: [PATCH v5 2/2] usb: dwc3: add generic driver to support flattened
config: arc-randconfig-001-20250706 (https://download.01.org/0day-ci/archive/20250706/202507060206.iiBP6CQi-lkp@intel.com/config)
compiler: arc-linux-gcc (GCC) 8.5.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250706/202507060206.iiBP6CQi-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 at intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202507060206.iiBP6CQi-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> drivers/usb/dwc3/dwc3-generic-plat.c:151:12: warning: 'dwc3_generic_runtime_idle' defined but not used [-Wunused-function]
    static int dwc3_generic_runtime_idle(struct device *dev)
               ^~~~~~~~~~~~~~~~~~~~~~~~~
>> drivers/usb/dwc3/dwc3-generic-plat.c:144:12: warning: 'dwc3_generic_runtime_resume' defined but not used [-Wunused-function]
    static int dwc3_generic_runtime_resume(struct device *dev)
               ^~~~~~~~~~~~~~~~~~~~~~~~~~~
>> drivers/usb/dwc3/dwc3-generic-plat.c:137:12: warning: 'dwc3_generic_runtime_suspend' defined but not used [-Wunused-function]
    static int dwc3_generic_runtime_suspend(struct device *dev)
               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
>> drivers/usb/dwc3/dwc3-generic-plat.c:121:12: warning: 'dwc3_generic_resume' defined but not used [-Wunused-function]
    static int dwc3_generic_resume(struct device *dev)
               ^~~~~~~~~~~~~~~~~~~
>> drivers/usb/dwc3/dwc3-generic-plat.c:107:12: warning: 'dwc3_generic_suspend' defined but not used [-Wunused-function]
    static int dwc3_generic_suspend(struct device *dev)
               ^~~~~~~~~~~~~~~~~~~~


vim +/dwc3_generic_runtime_idle +151 drivers/usb/dwc3/dwc3-generic-plat.c

   106	
 > 107	static int dwc3_generic_suspend(struct device *dev)
   108	{
   109		struct dwc3_generic *dwc3 = dev_get_drvdata(dev);
   110		int ret;
   111	
   112		ret = dwc3_pm_suspend(&dwc3->dwc);
   113		if (ret)
   114			return ret;
   115	
   116		clk_bulk_disable_unprepare(dwc3->num_clocks, dwc3->clks);
   117	
   118		return 0;
   119	}
   120	
 > 121	static int dwc3_generic_resume(struct device *dev)
   122	{
   123		struct dwc3_generic *dwc3 = dev_get_drvdata(dev);
   124		int ret;
   125	
   126		ret = clk_bulk_prepare_enable(dwc3->num_clocks, dwc3->clks);
   127		if (ret)
   128			return ret;
   129	
   130		ret = dwc3_pm_resume(&dwc3->dwc);
   131		if (ret)
   132			return ret;
   133	
   134		return 0;
   135	}
   136	
 > 137	static int dwc3_generic_runtime_suspend(struct device *dev)
   138	{
   139		struct dwc3_generic *dwc3 = dev_get_drvdata(dev);
   140	
   141		return dwc3_runtime_suspend(&dwc3->dwc);
   142	}
   143	
 > 144	static int dwc3_generic_runtime_resume(struct device *dev)
   145	{
   146		struct dwc3_generic *dwc3 = dev_get_drvdata(dev);
   147	
   148		return dwc3_runtime_resume(&dwc3->dwc);
   149	}
   150	
 > 151	static int dwc3_generic_runtime_idle(struct device *dev)
   152	{
   153		struct dwc3_generic *dwc3 = dev_get_drvdata(dev);
   154	
   155		return dwc3_runtime_idle(&dwc3->dwc);
   156	}
   157	

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