Re: [PATCH v2] gpiolib: don't build HTE code with CONFIG_HTE disabled

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

Hi Bartosz,

kernel test robot noticed the following build errors:

[auto build test ERROR on brgl/gpio/for-next]
[also build test ERROR on linus/master v6.14-rc2 next-20250212]
[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/Bartosz-Golaszewski/gpiolib-don-t-build-HTE-code-with-CONFIG_HTE-disabled/20250207-163408
base:   https://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux.git gpio/for-next
patch link:    https://lore.kernel.org/r/20250207083146.17872-1-brgl%40bgdev.pl
patch subject: [PATCH v2] gpiolib: don't build HTE code with CONFIG_HTE disabled
config: i386-buildonly-randconfig-001-20250213 (https://download.01.org/0day-ci/archive/20250213/202502131503.gMZldZLL-lkp@intel.com/config)
compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250213/202502131503.gMZldZLL-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/202502131503.gMZldZLL-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from drivers/reset/reset-gpio.c:3:
   include/linux/gpio/consumer.h: In function 'gpiod_enable_hw_timestamp_ns':
>> include/linux/gpio/consumer.h:557:17: error: implicit declaration of function 'WARN_ON' [-Werror=implicit-function-declaration]
     557 |                 WARN_ON(desc);
         |                 ^~~~~~~
   include/linux/gpio/consumer.h:559:17: error: 'ENOSYS' undeclared (first use in this function)
     559 |         return -ENOSYS;
         |                 ^~~~~~
   include/linux/gpio/consumer.h:559:17: note: each undeclared identifier is reported only once for each function it appears in
   include/linux/gpio/consumer.h: In function 'gpiod_disable_hw_timestamp_ns':
   include/linux/gpio/consumer.h:567:17: error: 'ENOSYS' undeclared (first use in this function)
     567 |         return -ENOSYS;
         |                 ^~~~~~
   cc1: some warnings being treated as errors


vim +/WARN_ON +557 include/linux/gpio/consumer.h

   548	
   549	#if IS_ENABLED(CONFIG_GPIOLIB) && IS_ENABLED(CONFIG_HTE)
   550	int gpiod_enable_hw_timestamp_ns(struct gpio_desc *desc, unsigned long flags);
   551	int gpiod_disable_hw_timestamp_ns(struct gpio_desc *desc, unsigned long flags);
   552	#else
   553	static inline int gpiod_enable_hw_timestamp_ns(struct gpio_desc *desc,
   554						       unsigned long flags)
   555	{
   556		if (!IS_ENABLED(CONFIG_GPIOLIB))
 > 557			WARN_ON(desc);
   558	
   559		return -ENOSYS;
   560	}
   561	static inline int gpiod_disable_hw_timestamp_ns(struct gpio_desc *desc,
   562							unsigned long flags)
   563	{
   564		if (!IS_ENABLED(CONFIG_GPIOLIB))
   565			WARN_ON(desc);
   566	
   567		return -ENOSYS;
   568	}
   569	#endif /* CONFIG_GPIOLIB && CONFIG_HTE */
   570	

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