linux-kernel - [esmil:visionfive 22/56] drivers/soc/sifive/sifive_l2_cache.c:152:17: error: implicit declaration of function 'writeq'; did you mean 'writel'?

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Date:   Sun, 24 Apr 2022 05:46:42 +0800
From:   kernel test robot <lkp@...el.com>
To:     Tom <support@...rs.com>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
        Emil Renner Berthing <kernel@...il.dk>
Subject: [esmil:visionfive 22/56]
 drivers/soc/sifive/sifive_l2_cache.c:152:17: error: implicit declaration of
 function 'writeq'; did you mean 'writel'?

tree:   https://github.com/esmil/linux visionfive
head:   0729a282564fe3940277937536b1e67f98885c49
commit: 82d19ba510f9a07c18a011731401222caaffdb4a [22/56] sifive/sifive_l2_cache: Add sifive_l2_flush64_range function
config: riscv-randconfig-r031-20220424 (https://download.01.org/0day-ci/archive/20220424/202204240511.jXvu17Rh-lkp@intel.com/config)
compiler: riscv32-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/esmil/linux/commit/82d19ba510f9a07c18a011731401222caaffdb4a
        git remote add esmil https://github.com/esmil/linux
        git fetch --no-tags esmil visionfive
        git checkout 82d19ba510f9a07c18a011731401222caaffdb4a
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross W=1 O=build_dir ARCH=riscv SHELL=/bin/bash drivers/soc/sifive/

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/soc/sifive/sifive_l2_cache.c: In function 'sifive_l2_flush64_range':
>> drivers/soc/sifive/sifive_l2_cache.c:152:17: error: implicit declaration of function 'writeq'; did you mean 'writel'? [-Werror=implicit-function-declaration]
     152 |                 writeq(line, l2_base + SIFIVE_L2_FLUSH64);
         |                 ^~~~~~
         |                 writel
   cc1: some warnings being treated as errors


vim +152 drivers/soc/sifive/sifive_l2_cache.c

   123	
   124	#ifdef CONFIG_SIFIVE_L2_FLUSH
   125	void sifive_l2_flush64_range(unsigned long start, unsigned long len)
   126	{
   127		unsigned long line;
   128	
   129		if(!l2_base) {
   130			pr_warn("L2CACHE: base addr invalid, skipping flush\n");
   131			return;
   132		}
   133	
   134		/* TODO: if (len == 0), skipping flush or going on? */
   135		if(!len) {
   136			pr_debug("L2CACHE: flush64 range @ 0x%lx(len:0)\n", start);
   137			return;
   138		}
   139	
   140		/* make sure the address is in the range */
   141		if(start < CONFIG_SIFIVE_L2_FLUSH_START ||
   142		   (start + len) > (CONFIG_SIFIVE_L2_FLUSH_START +
   143				     CONFIG_SIFIVE_L2_FLUSH_SIZE)) {
   144			pr_warn("L2CACHE: flush64 out of range: %lx(%lx), skip flush\n",
   145				start, len);
   146			return;
   147		}
   148	
   149		mb();	/* sync */
   150		for (line = start; line < start + len;
   151		     line += SIFIVE_L2_FLUSH64_LINE_LEN) {
 > 152			writeq(line, l2_base + SIFIVE_L2_FLUSH64);
   153			mb();
   154		}
   155	}
   156	EXPORT_SYMBOL_GPL(sifive_l2_flush64_range);
   157	#endif
   158	

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