[soc:baikal/drivers-1 4/5] drivers/bus/bt1-apb.c:330:3: error: implicit declaration of function 'readl'

From: kbuild test robot <lkp@intel.com>
To: "Serge, Semin," <Sergey.Semin@baikalelectronics.ru>
Cc: arm@kernel.org, kbuild-all@lists.01.org,
	Arnd Bergmann <arnd@arndb.de>,
	linux-arm-kernel@lists.infradead.org
Subject: [soc:baikal/drivers-1 4/5] drivers/bus/bt1-apb.c:330:3: error: implicit declaration of function 'readl'
Date: Wed, 3 Jun 2020 07:21:26 +0800	[thread overview]
Message-ID: <202006030720.Ds2L3QJH%lkp@intel.com> (raw)

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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/soc/soc.git baikal/drivers-1
head:   83ca8b3e8f213f49cc68b5c1fbcf88ebb24671eb
commit: 8f93662d8324940e8925a0e492c587dbcf7c7fee [4/5] bus: Add Baikal-T1 APB-bus driver
config: sparc64-allyesconfig (attached as .config)
compiler: sparc64-linux-gcc (GCC) 9.3.0
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
        git checkout 8f93662d8324940e8925a0e492c587dbcf7c7fee
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=sparc64 

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

All errors (new ones prefixed by >>, old ones prefixed by <<):

drivers/bus/bt1-apb.c: In function 'inject_error_store':
>> drivers/bus/bt1-apb.c:330:3: error: implicit declaration of function 'readl' [-Werror=implicit-function-declaration]
330 |   readl(apb->res);
|   ^~~~~
cc1: some warnings being treated as errors

vim +/readl +330 drivers/bus/bt1-apb.c

   318	
   319	static ssize_t inject_error_store(struct device *dev,
   320				      struct device_attribute *attr,
   321				      const char *data, size_t count)
   322	{
   323		struct bt1_apb *apb = dev_get_drvdata(dev);
   324	
   325		/*
   326		 * Either dummy read from the unmapped address in the APB IO area
   327		 * or manually set the IRQ status.
   328		 */
   329		if (!strncmp(data, "nodev", 5))
 > 330			readl(apb->res);
   331		else if (!strncmp(data, "irq", 3))
   332			regmap_update_bits(apb->regs, APB_EHB_ISR, APB_EHB_ISR_PENDING,
   333					   APB_EHB_ISR_PENDING);
   334		else
   335			return -EINVAL;
   336	
   337		return count;
   338	}
   339	static DEVICE_ATTR_RW(inject_error);
   340	

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

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