[xilinx-xlnx:lkp_test 199/504] drivers/gpu/drm/xlnx/xlnx_sdi.c:264:9: error: implicit declaration of function 'writel'

[xilinx-xlnx:lkp_test 199/504] drivers/gpu/drm/xlnx/xlnx_sdi.c:264:9: error: implicit declaration of function 'writel'

[kernel test robot]

tree:   https://github.com/Xilinx/linux-xlnx lkp_test
head:   9ac6b4acf9144465ac1408d4d799635dec0223a0
commit: fd4e677cfcfc2c6455abc12955015afd8c3790e6 [199/504] drm: xlnx: sdi: Adding sdi-tx driver
config: s390-allyesconfig (https://download.01.org/0day-ci/archive/20250111/202501110604.TYwWbDEf-lkp@intel.com/config)
compiler: s390-linux-gcc (GCC) 14.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250111/202501110604.TYwWbDEf-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202501110604.TYwWbDEf-lkp@intel.com/

All errors (new ones prefixed by >>):

   drivers/gpu/drm/xlnx/xlnx_sdi.c: In function 'xlnx_sdi_writel':
>> drivers/gpu/drm/xlnx/xlnx_sdi.c:264:9: error: implicit declaration of function 'writel' [-Wimplicit-function-declaration]
     264 |         writel(val, base + offset);
         |         ^~~~~~
   drivers/gpu/drm/xlnx/xlnx_sdi.c: In function 'xlnx_sdi_readl':
>> drivers/gpu/drm/xlnx/xlnx_sdi.c:269:16: error: implicit declaration of function 'readl' [-Wimplicit-function-declaration]
     269 |         return readl(base + offset);
         |                ^~~~~


vim +/writel +264 drivers/gpu/drm/xlnx/xlnx_sdi.c

   261	
   262	static inline void xlnx_sdi_writel(void __iomem *base, int offset, u32 val)
   263	{
 > 264		writel(val, base + offset);
   265	}
   266	
   267	static inline u32 xlnx_sdi_readl(void __iomem *base, int offset)
   268	{
 > 269		return readl(base + offset);
   270	}
   271	

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