linux-kernel - Re: [PATCH] clk: imx: composite-8m: Add imx8m_divider_determine

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Message-ID: <202305070235.r9bEq3U8-lkp@intel.com>
Date:   Sun, 7 May 2023 02:12:12 +0800
From:   kernel test robot <lkp@...el.com>
To:     Adam Ford <aford173@...il.com>, linux-clk@...r.kernel.org
Cc:     llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
        aford@...conembedded.com, Adam Ford <aford173@...il.com>,
        Abel Vesa <abelvesa@...nel.org>, Peng Fan <peng.fan@....com>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>,
        NXP Linux Team <linux-imx@....com>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] clk: imx: composite-8m: Add imx8m_divider_determine_rate

Hi Adam,

kernel test robot noticed the following build warnings:

[auto build test WARNING on clk/clk-next]
[also build test WARNING on v6.3 next-20230505]
[cannot apply to abelvesa/clk/imx linus/master]
[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/Adam-Ford/clk-imx-composite-8m-Add-imx8m_divider_determine_rate/20230507-002453
base:   https://git.kernel.org/pub/scm/linux/kernel/git/clk/linux.git clk-next
patch link:    https://lore.kernel.org/r/20230506162403.375212-1-aford173%40gmail.com
patch subject: [PATCH] clk: imx: composite-8m: Add imx8m_divider_determine_rate
config: powerpc-randconfig-r012-20230507 (https://download.01.org/0day-ci/archive/20230507/202305070235.r9bEq3U8-lkp@intel.com/config)
compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project b0fb98227c90adf2536c9ad644a74d5e92961111)
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
        # install powerpc cross compiling tool for clang build
        # apt-get install binutils-powerpc-linux-gnu
        # https://github.com/intel-lab-lkp/linux/commit/d92df3b38fc20beb735cb3b75f118b45d1ae304b
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Adam-Ford/clk-imx-composite-8m-Add-imx8m_divider_determine_rate/20230507-002453
        git checkout d92df3b38fc20beb735cb3b75f118b45d1ae304b
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=powerpc olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=powerpc SHELL=/bin/bash drivers/clk/imx/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@...el.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202305070235.r9bEq3U8-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> drivers/clk/imx/clk-composite-8m.c:122:5: warning: no previous prototype for function 'imx8m_divider_determine_rate' [-Wmissing-prototypes]
   int imx8m_divider_determine_rate(struct clk_hw *hw,
       ^
   drivers/clk/imx/clk-composite-8m.c:122:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   int imx8m_divider_determine_rate(struct clk_hw *hw,
   ^
   static 
   1 warning generated.


vim +/imx8m_divider_determine_rate +122 drivers/clk/imx/clk-composite-8m.c

   121	
 > 122	int imx8m_divider_determine_rate(struct clk_hw *hw,
   123					      struct clk_rate_request *req)
   124	{
   125		struct clk_divider *divider = to_clk_divider(hw);
   126		int prediv_value;
   127		int div_value;
   128	
   129		/* if read only, just return current value */
   130		if (divider->flags & CLK_DIVIDER_READ_ONLY) {
   131			u32 val;
   132	
   133			val = readl(divider->reg);
   134			prediv_value = val >> divider->shift;
   135			prediv_value &= clk_div_mask(divider->width);
   136	
   137			div_value = val >> PCG_DIV_SHIFT;
   138			div_value &= clk_div_mask(PCG_DIV_WIDTH);
   139	
   140			return divider_ro_determine_rate(hw, req, divider->table,
   141							 PCG_PREDIV_WIDTH + PCG_DIV_WIDTH,
   142							 divider->flags, prediv_value * div_value);
   143		}
   144	
   145		return divider_determine_rate(hw, req, divider->table,
   146					      PCG_PREDIV_WIDTH + PCG_DIV_WIDTH,
   147					      divider->flags);
   148	}
   149	

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