linux-kernel - [mingo-tip:sched/headers 2353/2384] drivers/media/rc/mtk-cir.c:163:15: error: implicit declaration of function 'DIV_ROUND

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Message-ID: <202201151534.1iCJKuH9-lkp@intel.com>
Date:   Sat, 15 Jan 2022 15:31:21 +0800
From:   kernel test robot <lkp@...el.com>
To:     Ingo Molnar <mingo@...nel.org>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org
Subject: [mingo-tip:sched/headers 2353/2384]
 drivers/media/rc/mtk-cir.c:163:15: error: implicit declaration of function
 'DIV_ROUND_CLOSEST'

tree:   git://git.kernel.org/pub/scm/linux/kernel/git/mingo/tip.git sched/headers
head:   4c707c1c0de83967079b4e385012fa5b00e2cd11
commit: 6bdaa08124f2198c510118e5ae8816748e9816df [2353/2384] headers/deps: time: Optimize <linux/time64.h> dependencies, remove <linux/time64_api.h> inclusion
config: mips-randconfig-r036-20220113 (https://download.01.org/0day-ci/archive/20220115/202201151534.1iCJKuH9-lkp@intel.com/config)
compiler: mips-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://git.kernel.org/pub/scm/linux/kernel/git/mingo/tip.git/commit/?id=6bdaa08124f2198c510118e5ae8816748e9816df
        git remote add mingo-tip git://git.kernel.org/pub/scm/linux/kernel/git/mingo/tip.git
        git fetch --no-tags mingo-tip sched/headers
        git checkout 6bdaa08124f2198c510118e5ae8816748e9816df
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=mips SHELL=/bin/bash drivers/media/rc/

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

All errors (new ones prefixed by >>):

   drivers/media/rc/mtk-cir.c: In function 'mtk_chk_period':
>> drivers/media/rc/mtk-cir.c:163:15: error: implicit declaration of function 'DIV_ROUND_CLOSEST' [-Werror=implicit-function-declaration]
     163 |         val = DIV_ROUND_CLOSEST(clk_get_rate(ir->bus),
         |               ^~~~~~~~~~~~~~~~~
   cc1: some warnings being treated as errors


vim +/DIV_ROUND_CLOSEST +163 drivers/media/rc/mtk-cir.c

50c3c1ba171f3f Sean Wang  2017-06-30  154  
50c3c1ba171f3f Sean Wang  2017-06-30  155  static inline u32 mtk_chk_period(struct mtk_ir *ir)
50c3c1ba171f3f Sean Wang  2017-06-30  156  {
50c3c1ba171f3f Sean Wang  2017-06-30  157  	u32 val;
50c3c1ba171f3f Sean Wang  2017-06-30  158  
50c3c1ba171f3f Sean Wang  2017-06-30  159  	/*
50c3c1ba171f3f Sean Wang  2017-06-30  160  	 * Period for software decoder used in the
50c3c1ba171f3f Sean Wang  2017-06-30  161  	 * unit of raw software sampling
50c3c1ba171f3f Sean Wang  2017-06-30  162  	 */
d904eb0b351fe5 Sean Young 2020-11-29 @163  	val = DIV_ROUND_CLOSEST(clk_get_rate(ir->bus),
d904eb0b351fe5 Sean Young 2020-11-29  164  				USEC_PER_SEC * ir->data->div / MTK_IR_SAMPLE);
50c3c1ba171f3f Sean Wang  2017-06-30  165  
50c3c1ba171f3f Sean Wang  2017-06-30  166  	dev_dbg(ir->dev, "@pwm clk  = \t%lu\n",
50c3c1ba171f3f Sean Wang  2017-06-30  167  		clk_get_rate(ir->bus) / ir->data->div);
50c3c1ba171f3f Sean Wang  2017-06-30  168  	dev_dbg(ir->dev, "@chkperiod = %08x\n", val);
50c3c1ba171f3f Sean Wang  2017-06-30  169  
50c3c1ba171f3f Sean Wang  2017-06-30  170  	return val;
50c3c1ba171f3f Sean Wang  2017-06-30  171  }
50c3c1ba171f3f Sean Wang  2017-06-30  172  

:::::: The code at line 163 was first introduced by commit
:::::: d904eb0b351fe5545d9ba5b85844342f49025923 media: mtk-cir: fix calculation of chk period

:::::: TO: Sean Young <sean@...s.org>
:::::: CC: Mauro Carvalho Chehab <mchehab+huawei@...nel.org>

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