Re: [PATCH v1 for-next] spi: mchp-pci1xxxx: Updated memcpy implementation for x64 and bcm2711 processors

[kernel test robot <lkp@xxxxxxxxx>]

Hi Rengarajan,

kernel test robot noticed the following build errors:

[auto build test ERROR on broonie-spi/for-next]
[also build test ERROR on linus/master v6.14-rc4 next-20250227]
[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/Rengarajan-S/spi-mchp-pci1xxxx-Updated-memcpy-implementation-for-x64-and-bcm2711-processors/20250224-205745
base:   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi.git for-next
patch link:    https://lore.kernel.org/r/20250224125153.13728-1-rengarajan.s%40microchip.com
patch subject: [PATCH v1 for-next] spi: mchp-pci1xxxx: Updated memcpy implementation for x64 and bcm2711 processors
config: arm-randconfig-002-20250227 (https://download.01.org/0day-ci/archive/20250228/202502280356.AulpRaPU-lkp@xxxxxxxxx/config)
compiler: clang version 17.0.6 (https://github.com/llvm/llvm-project 6009708b4367171ccdbf4b5905cb6a803753fe18)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250228/202502280356.AulpRaPU-lkp@xxxxxxxxx/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@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202502280356.AulpRaPU-lkp@xxxxxxxxx/

All errors (new ones prefixed by >>):

>> drivers/spi/spi-pci1xxxx.c:417:4: error: call to undeclared function '__raw_writeq'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     417 |                         __raw_writeq(*(u64 *)from, to);
         |                         ^
>> drivers/spi/spi-pci1xxxx.c:448:17: error: call to undeclared function '__raw_readq'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     448 |                         *(u64 *)to = __raw_readq(from);
         |                                      ^
   2 errors generated.


vim +/__raw_writeq +417 drivers/spi/spi-pci1xxxx.c

   410	
   411	static void pci1xxxx_spi_write_to_io(void __iomem *to, const void *from,
   412					     size_t count, size_t size)
   413	{
   414		while (count) {
   415			if (size == 8 && (IS_ALIGNED((unsigned long)to, 8)) &&
   416			    count >= 8) {
 > 417				__raw_writeq(*(u64 *)from, to);
   418				from += 8;
   419				to += 8;
   420				count -= 8;
   421			} else if (size >= 4 && (IS_ALIGNED((unsigned long)to, 4)) &&
   422				   count >= 4) {
   423				__raw_writel(*(u32 *)from, to);
   424				from += 4;
   425				to += 4;
   426				count -= 4;
   427			} else if (size >= 2 && (IS_ALIGNED((unsigned long)to, 2)) &&
   428				   count >= 2) {
   429				__raw_writew(*(u16 *)from, to);
   430				from += 2;
   431				to += 2;
   432				count -= 2;
   433			} else {
   434				__raw_writeb(*(u8 *)from, to);
   435				from += 1;
   436				to += 1;
   437				count -= 1;
   438			}
   439		}
   440	}
   441	
   442	static void pci1xxxx_spi_read_from_io(void *to, const void __iomem *from,
   443					      size_t count, size_t size)
   444	{
   445		while (count) {
   446			if (size == 8 && (IS_ALIGNED((unsigned long)from, 8)) &&
   447			    count >= 8) {
 > 448				*(u64 *)to = __raw_readq(from);
   449				from += 8;
   450				to += 8;
   451				count -= 8;
   452			} else if (size >= 4 && (IS_ALIGNED((unsigned long)from, 4)) &&
   453				   count >= 4) {
   454				*(u32 *)to = __raw_readl(from);
   455				from += 4;
   456				to += 4;
   457				count -= 4;
   458			} else if (size >= 2 && (IS_ALIGNED((unsigned long)from, 2)) &&
   459				   count >= 2) {
   460				*(u16 *)to = __raw_readw(from);
   461				from += 2;
   462				to += 2;
   463				count -= 2;
   464			} else {
   465				*(u8 *)to = __raw_readb(from);
   466				from += 1;
   467				to += 1;
   468				count -= 1;
   469			}
   470		}
   471	}
   472	

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