[PATCH] pinctrl: mediatek: add eint new design for mt8196

[kernel test robot]

Hi chang,

kernel test robot noticed the following build errors:

[auto build test ERROR on linusw-pinctrl/devel]
[also build test ERROR on linusw-pinctrl/for-next linus/master v6.12-rc4 next-20241025]
[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/chang-hao/pinctrl-mediatek-add-eint-new-design-for-mt8196/20241025-111952
base:   https://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl.git devel
patch link:    https://lore.kernel.org/r/20241025031814.21442-1-ot_chhao.chang%40mediatek.com
patch subject: [PATCH] pinctrl: mediatek: add eint new design for mt8196
config: csky-randconfig-r071-20241027 (https://download.01.org/0day-ci/archive/20241027/202410271123.3hyFF6pg-lkp@intel.com/config)
compiler: csky-linux-gcc (GCC) 14.1.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241027/202410271123.3hyFF6pg-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/202410271123.3hyFF6pg-lkp@intel.com/

All errors (new ones prefixed by >>):

   drivers/pinctrl/mediatek/mtk-eint.c: In function 'mtk_eint_do_suspend':
>> drivers/pinctrl/mediatek/mtk-eint.c:588:9: error: implicit declaration of function 'dsb' [-Wimplicit-function-declaration]
     588 |         dsb(sy);
         |         ^~~
>> drivers/pinctrl/mediatek/mtk-eint.c:588:13: error: 'sy' undeclared (first use in this function); did you mean 's8'?
     588 |         dsb(sy);
         |             ^~
         |             s8
   drivers/pinctrl/mediatek/mtk-eint.c:588:13: note: each undeclared identifier is reported only once for each function it appears in
   drivers/pinctrl/mediatek/mtk-eint.c: In function 'mtk_eint_do_resume':
   drivers/pinctrl/mediatek/mtk-eint.c:609:13: error: 'sy' undeclared (first use in this function); did you mean 's8'?
     609 |         dsb(sy);
         |             ^~
         |             s8
   drivers/pinctrl/mediatek/mtk-eint.c: At top level:
   drivers/pinctrl/mediatek/mtk-eint.c:686:14: warning: no previous prototype for 'mtk_eint_get_debounce_en' [-Wmissing-prototypes]
     686 | unsigned int mtk_eint_get_debounce_en(struct mtk_eint *eint,
         |              ^~~~~~~~~~~~~~~~~~~~~~~~
   drivers/pinctrl/mediatek/mtk-eint.c:709:14: warning: no previous prototype for 'mtk_eint_get_debounce_value' [-Wmissing-prototypes]
     709 | unsigned int mtk_eint_get_debounce_value(struct mtk_eint *eint,
         |              ^~~~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/pinctrl/mediatek/mtk-eint.c:749:34: warning: 'eint_compatible_ids' defined but not used [-Wunused-const-variable=]
     749 | static const struct of_device_id eint_compatible_ids[] = {
         |                                  ^~~~~~~~~~~~~~~~~~~

Kconfig warnings: (for reference only)
   WARNING: unmet direct dependencies detected for GET_FREE_REGION
   Depends on [n]: SPARSEMEM [=n]
   Selected by [m]:
   - RESOURCE_KUNIT_TEST [=m] && RUNTIME_TESTING_MENU [=y] && KUNIT [=m]


vim +/dsb +588 drivers/pinctrl/mediatek/mtk-eint.c

   572	
   573	int mtk_eint_do_suspend(struct mtk_eint *eint)
   574	{
   575		unsigned int i, j, port;
   576	
   577		for (i = 0; i < eint->instance_number; i++) {
   578			struct mtk_eint_instance inst = eint->instances[i];
   579	
   580			for (j = 0; j < inst.number; j += MAX_BIT) {
   581				port = j >> REG_GROUP;
   582				writel_relaxed(~inst.wake_mask[port],
   583					       inst.base + port*REG_OFSET + eint->comp->regs->mask_set);
   584				writel_relaxed(inst.wake_mask[port],
   585					       inst.base + port*REG_OFSET + eint->comp->regs->mask_clr);
   586			}
   587		}
 > 588		dsb(sy);
   589	
   590		return 0;
   591	}
   592	EXPORT_SYMBOL_GPL(mtk_eint_do_suspend);
   593	

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