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

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-rc1 next-20250207]
[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-002-20250208 (https://download.01.org/0day-ci/archive/20250208/[email protected]/config)
compiler: clang version 19.1.3 (https://github.com/llvm/llvm-project ab51eccf88f5321e7c60591c5546b254b6afab99)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250208/[email protected]/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 <[email protected]>
| Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/

All errors (new ones prefixed by >>):

   In file included from drivers/power/supply/max8903_charger.c:9:
   include/linux/gpio/consumer.h:557:3: error: call to undeclared function 'WARN_ON'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     557 |                 WARN_ON(desc);
         |                 ^
>> include/linux/gpio/consumer.h:559:10: error: use of undeclared identifier 'ENOSYS'
     559 |         return -ENOSYS;
         |                 ^
   include/linux/gpio/consumer.h:565:3: error: call to undeclared function 'WARN_ON'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     565 |                 WARN_ON(desc);
         |                 ^
   include/linux/gpio/consumer.h:567:10: error: use of undeclared identifier 'ENOSYS'
     567 |         return -ENOSYS;
         |                 ^
   4 errors generated.


vim +/ENOSYS +559 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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