Hi Qin,

I love your patch! Perhaps something to improve:

[auto build test WARNING on pza/reset/next]
[also build test WARNING on robh/for-next clk/clk-next tip/irq/core linus/master v5.15 next-20211029]
[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]

url:    https://github.com/0day-ci/linux/commits/Qin-Jian/dt-bindings-vendor-prefixes-Add-Sunplus/20211101-140155
base:   https://git.pengutronix.de/git/pza/linux reset/next
config: openrisc-randconfig-r015-20211101 (attached as .config)
compiler: or1k-linux-gcc (GCC) 11.2.0
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/0day-ci/linux/commit/9767714cf5c22192f99adb0d8e344cb5e38a2e33
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Qin-Jian/dt-bindings-vendor-prefixes-Add-Sunplus/20211101-140155
        git checkout 9767714cf5c22192f99adb0d8e344cb5e38a2e33
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=openrisc 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All warnings (new ones prefixed by >>):

>> drivers/clk/clk-sp7021.c:663:13: warning: no previous prototype for 'clk_register_sp_pll' [-Wmissing-prototypes]
     663 | struct clk *clk_register_sp_pll(const char *name, const char *parent,
         |             ^~~~~~~~~~~~~~~~~~~


vim +/clk_register_sp_pll +663 drivers/clk/clk-sp7021.c

   662	
 > 663	struct clk *clk_register_sp_pll(const char *name, const char *parent,
   664			void __iomem *reg, int pd_bit, int bp_bit,
   665			unsigned long brate, int shift, int width,
   666			spinlock_t *lock)
   667	{
   668		struct sp_pll *pll;
   669		struct clk *clk;
   670		//unsigned long flags = 0;
   671		struct clk_init_data initd = {
   672			.name = name,
   673			.parent_names = &parent,
   674			.ops = (bp_bit >= 0) ? &sp_pll_ops : &sp_pll_sub_ops,
   675			.num_parents = 1,
   676			.flags = CLK_IGNORE_UNUSED
   677		};
   678	
   679		pll = kzalloc(sizeof(*pll), GFP_KERNEL);
   680		if (!pll)
   681			return ERR_PTR(-ENOMEM);
   682	
   683		if (reg == PLLSYS_CTL)
   684			initd.flags |= CLK_IS_CRITICAL;
   685	
   686		pll->hw.init = &initd;
   687		pll->reg = reg;
   688		pll->pd_bit = pd_bit;
   689		pll->bp_bit = bp_bit;
   690		pll->brate = brate;
   691		pll->div_shift = shift;
   692		pll->div_width = width;
   693		pll->lock = lock;
   694	
   695		clk = clk_register(NULL, &pll->hw);
   696		if (WARN_ON(IS_ERR(clk))) {
   697			kfree(pll);
   698		} else {
   699			pr_info("%-20s%lu\n", name, clk_get_rate(clk));
   700			clk_register_clkdev(clk, NULL, name);
   701		}
   702	
   703		return clk;
   704	}
   705	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org