Re: [PATCH] x86/rtc: fix failed fallback RTC device registration handling

[kernel test robot <lkp@intel.com>]

Hi Guangshuo,

kernel test robot noticed the following build errors:

[auto build test ERROR on tip/master]
[also build test ERROR on linus/master v7.1-rc1 next-20260429]
[cannot apply to tip/auto-latest tip/x86/core bp/for-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/Guangshuo-Li/x86-rtc-fix-failed-fallback-RTC-device-registration-handling/20260416-130623
base:   tip/master
patch link:    https://lore.kernel.org/r/20260415193455.3869807-1-lgs201920130244%40gmail.com
patch subject: [PATCH] x86/rtc: fix failed fallback RTC device registration handling
config: i386-allnoconfig (https://download.01.org/0day-ci/archive/20260430/202604300638.5ysk7jy1-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/20260430/202604300638.5ysk7jy1-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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202604300638.5ysk7jy1-lkp@intel.com/

All errors (new ones prefixed by >>):

   arch/x86/kernel/rtc.c: In function 'add_rtc_cmos':
>> arch/x86/kernel/rtc.c:142:9: error: 'ret' undeclared (first use in this function); did you mean 'net'?
     142 |         ret = platform_device_register(&rtc_device);
         |         ^~~
         |         net
   arch/x86/kernel/rtc.c:142:9: note: each undeclared identifier is reported only once for each function it appears in


vim +142 arch/x86/kernel/rtc.c

   133	
   134	static __init int add_rtc_cmos(void)
   135	{
   136		if (cmos_rtc_platform_device_present)
   137			return 0;
   138	
   139		if (!x86_platform.legacy.rtc)
   140			return -ENODEV;
   141	
 > 142		ret = platform_device_register(&rtc_device);

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