Re: [PATCH] iio: adc: ad7280a: replace mutex_lock() with guard(mutex)

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

Hi Matheus,

kernel test robot noticed the following build errors:

[auto build test ERROR on jic23-iio/togreg]
[also build test ERROR on linus/master v7.0-rc4 next-20260320]
[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/Matheus-Giarola/iio-adc-ad7280a-replace-mutex_lock-with-guard-mutex/20260320-142509
base:   https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio.git togreg
patch link:    https://lore.kernel.org/r/20260319184615.10970-1-matheusgiarola%40usp.br
patch subject: [PATCH] iio: adc: ad7280a: replace mutex_lock() with guard(mutex)
config: parisc-randconfig-002-20260321 (https://download.01.org/0day-ci/archive/20260321/202603210357.KTWqlL36-lkp@intel.com/config)
compiler: hppa-linux-gcc (GCC) 9.5.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260321/202603210357.KTWqlL36-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/202603210357.KTWqlL36-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from drivers/iio/adc/ad7280a.c:10:
   drivers/iio/adc/ad7280a.c: In function 'ad7280_read_raw':
>> include/linux/cleanup.h:299:2: error: a label can only be part of a statement and a declaration is not a statement
     299 |  class_##_name##_t var __cleanup(class_##_name##_destructor) = \
         |  ^~~~~~
   include/linux/cleanup.h:419:2: note: in expansion of macro 'CLASS'
     419 |  CLASS(_name, __UNIQUE_ID(guard))
         |  ^~~~~
   drivers/iio/adc/ad7280a.c:878:3: note: in expansion of macro 'guard'
     878 |   guard(mutex)(&st->lock);
         |   ^~~~~
--
   In file included from ad7280a.c:10:
   ad7280a.c: In function 'ad7280_read_raw':
>> include/linux/cleanup.h:299:2: error: a label can only be part of a statement and a declaration is not a statement
     299 |  class_##_name##_t var __cleanup(class_##_name##_destructor) = \
         |  ^~~~~~
   include/linux/cleanup.h:419:2: note: in expansion of macro 'CLASS'
     419 |  CLASS(_name, __UNIQUE_ID(guard))
         |  ^~~~~
   ad7280a.c:878:3: note: in expansion of macro 'guard'
     878 |   guard(mutex)(&st->lock);
         |   ^~~~~


vim +299 include/linux/cleanup.h

54da6a0924311c Peter Zijlstra 2023-05-26  297  
54da6a0924311c Peter Zijlstra 2023-05-26  298  #define CLASS(_name, var)						\
54da6a0924311c Peter Zijlstra 2023-05-26 @299  	class_##_name##_t var __cleanup(class_##_name##_destructor) =	\
54da6a0924311c Peter Zijlstra 2023-05-26  300  		class_##_name##_constructor
54da6a0924311c Peter Zijlstra 2023-05-26  301  

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