[xilinx-xlnx:xlnx_rebase_v5.10 1403/1972] include/linux/mtd/cfi.h:62:2: warning: No CONFIG_MTD_CFI_Ix selected. No NOR chip support can work.

tree:   https://github.com/Xilinx/linux-xlnx xlnx_rebase_v5.10
head:   47ec4129b04ae9b0e061323088cfc7196b62e373
commit: 0ee2a65f834c5d35ad3ce580c4772d9cf7da2937 [1403/1972] spi: spi-zynq-qspi: Add dual parallal and stacked support
config: arm64-buildonly-randconfig-r001-20211004 (attached as .config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project c0039de2953d15815448b4b3c3bafb45607781e0)
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
        # install arm64 cross compiling tool for clang build
        # apt-get install binutils-aarch64-linux-gnu
        # https://github.com/Xilinx/linux-xlnx/commit/0ee2a65f834c5d35ad3ce580c4772d9cf7da2937
        git remote add xilinx-xlnx https://github.com/Xilinx/linux-xlnx
        git fetch --no-tags xilinx-xlnx xlnx_rebase_v5.10
        git checkout 0ee2a65f834c5d35ad3ce580c4772d9cf7da2937
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=arm64 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <redacted>

All warnings (new ones prefixed by >>):

   In file included from drivers/spi/spi-mem.c:10:
   In file included from include/linux/mtd/spi-nor.h:10:

quoted

include/linux/mtd/cfi.h:62:2: warning: No CONFIG_MTD_CFI_Ix selected. No NOR chip support can work. [-W#warnings]

   #warning No CONFIG_MTD_CFI_Ix selected. No NOR chip support can work.
    ^
   1 warning generated.

Kconfig warnings: (for reference only)
   WARNING: unmet direct dependencies detected for MXC_CLK_SCU
   Depends on COMMON_CLK && ARCH_MXC && IMX_SCU && HAVE_ARM_SMCCC
   Selected by
   - CLK_IMX8QXP && COMMON_CLK && (ARCH_MXC && ARM64 || COMPILE_TEST && IMX_SCU && HAVE_ARM_SMCCC


vim +62 include/linux/mtd/cfi.h

^1da177e4c3f41 Linus Torvalds  2005-04-16  60  
241651d04d672f David Woodhouse 2007-09-06  61  #ifndef cfi_interleave
241651d04d672f David Woodhouse 2007-09-06 @62  #warning No CONFIG_MTD_CFI_Ix selected. No NOR chip support can work.
241651d04d672f David Woodhouse 2007-09-06  63  static inline int cfi_interleave(void *cfi)
241651d04d672f David Woodhouse 2007-09-06  64  {
241651d04d672f David Woodhouse 2007-09-06  65  	BUG();
241651d04d672f David Woodhouse 2007-09-06  66  	return 0;
241651d04d672f David Woodhouse 2007-09-06  67  }
241651d04d672f David Woodhouse 2007-09-06  68  #endif
241651d04d672f David Woodhouse 2007-09-06  69  

:::::: The code at line 62 was first introduced by commit
:::::: 241651d04d672fb685b2874707016cbbf95931e5 [MTD] Fix CFI build error when no map width or interleave supported

:::::: TO: David Woodhouse [off-list ref]
:::::: CC: David Woodhouse [off-list ref]

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