[PATCHv1 2/2] soc: rockchip: power-domain: add rk3588 mem module support

[kernel test robot]

Hi Sebastian,

I love your patch! Yet something to improve:

[auto build test ERROR on rockchip/for-next]
[also build test ERROR on linus/master v6.3-rc4 next-20230331]
[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/Sebastian-Reichel/clk-rockchip-rk3588-make-gate-linked-clocks-ignore-unused/20230401-003605
base:   https://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip.git for-next
patch link:    https://lore.kernel.org/r/20230331163058.5688-3-sebastian.reichel%40collabora.com
patch subject: [PATCHv1 2/2] soc: rockchip: power-domain: add rk3588 mem module support
config: riscv-allmodconfig (https://download.01.org/0day-ci/archive/20230401/202304010108.ta6EkS7C-lkp@intel.com/config)
compiler: riscv64-linux-gcc (GCC) 12.1.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://github.com/intel-lab-lkp/linux/commit/8a9b7bc14bff10030ef40e0350429490ff984f26
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Sebastian-Reichel/clk-rockchip-rk3588-make-gate-linked-clocks-ignore-unused/20230401-003605
        git checkout 8a9b7bc14bff10030ef40e0350429490ff984f26
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=riscv olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=riscv SHELL=/bin/bash drivers/soc/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp at intel.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202304010108.ta6EkS7C-lkp@intel.com/

All errors (new ones prefixed by >>):

   drivers/soc/rockchip/pm_domains.c: In function 'rockchip_pmu_domain_mem_reset':
>> drivers/soc/rockchip/pm_domains.c:462:9: error: implicit declaration of function 'dsb' [-Werror=implicit-function-declaration]
     462 |         dsb(sy);
         |         ^~~
>> drivers/soc/rockchip/pm_domains.c:462:13: error: 'sy' undeclared (first use in this function); did you mean 's8'?
     462 |         dsb(sy);
         |             ^~
         |             s8
   drivers/soc/rockchip/pm_domains.c:462:13: note: each undeclared identifier is reported only once for each function it appears in
   cc1: some warnings being treated as errors


vim +/dsb +462 drivers/soc/rockchip/pm_domains.c

   441	
   442	static int rockchip_pmu_domain_mem_reset(struct rockchip_pm_domain *pd)
   443	{
   444		struct rockchip_pmu *pmu = pd->pmu;
   445		struct generic_pm_domain *genpd = &pd->genpd;
   446		bool is_on;
   447		int ret = 0;
   448	
   449		ret = readx_poll_timeout_atomic(rockchip_pmu_domain_is_chain_on, pd, is_on,
   450						is_on == true, 0, 10000);
   451		if (ret) {
   452			dev_err(pmu->dev,
   453				"failed to get chain status '%s', target_on=1, val=%d\n",
   454				genpd->name, is_on);
   455			goto error;
   456		}
   457	
   458		udelay(20);
   459	
   460		regmap_write(pmu->regmap, pmu->info->mem_pwr_offset + pd->info->pwr_offset,
   461			     (pd->info->pwr_mask | pd->info->pwr_w_mask));
 > 462		dsb(sy);
   463	
   464		ret = readx_poll_timeout_atomic(rockchip_pmu_domain_is_mem_on, pd, is_on,
   465						is_on == false, 0, 10000);
   466		if (ret) {
   467			dev_err(pmu->dev,
   468				"failed to get mem status '%s', target_on=0, val=%d\n",
   469				genpd->name, is_on);
   470			goto error;
   471		}
   472	
   473		regmap_write(pmu->regmap, pmu->info->mem_pwr_offset + pd->info->pwr_offset,
   474			     pd->info->pwr_w_mask);
   475		dsb(sy);
   476	
   477		ret = readx_poll_timeout_atomic(rockchip_pmu_domain_is_mem_on, pd, is_on,
   478						is_on == true, 0, 10000);
   479		if (ret) {
   480			dev_err(pmu->dev,
   481				"failed to get mem status '%s', target_on=1, val=%d\n",
   482				genpd->name, is_on);
   483		}
   484	
   485	error:
   486		return ret;
   487	}
   488	

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