Hi Mark-PK, FYI, the error/warning still remains. tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 9250d2f72dc46a808b6aa23bf50dd670f1f52ddc commit: e61c451476e61450f6771ce03bbc01210a09be16 [4288/13276] dma-mapping: Add dma_release_coherent_memory to DMA API config: s390-randconfig-r002-20220728 (https://download.01.org/0day-ci/archive/20220728/202207281724.oBZnmI4E-lkp@xxxxxxxxx/config) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 8dfaecc4c24494337933aff9d9166486ca0949f1) 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 s390 cross compiling tool for clang build # apt-get install binutils-s390x-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=e61c451476e61450f6771ce03bbc01210a09be16 git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git git fetch --no-tags linux-next master git checkout e61c451476e61450f6771ce03bbc01210a09be16 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=s390 SHELL=/bin/bash If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): /opt/cross/gcc-12.1.0-nolibc/s390x-linux/bin/s390x-linux-ld: kernel/dma/coherent.o: in function `dma_declare_coherent_memory': coherent.c:(.text+0x48): undefined reference to `memremap' /opt/cross/gcc-12.1.0-nolibc/s390x-linux/bin/s390x-linux-ld: coherent.c:(.text+0x14a): undefined reference to `memunmap' /opt/cross/gcc-12.1.0-nolibc/s390x-linux/bin/s390x-linux-ld: coherent.c:(.text+0x180): undefined reference to `memunmap' /opt/cross/gcc-12.1.0-nolibc/s390x-linux/bin/s390x-linux-ld: kernel/dma/coherent.o: in function `dma_release_coherent_memory': >> coherent.c:(.text+0x1e2): undefined reference to `memunmap' /opt/cross/gcc-12.1.0-nolibc/s390x-linux/bin/s390x-linux-ld: kernel/dma/coherent.o: in function `rmem_dma_device_init': coherent.c:(.text+0x634): undefined reference to `memremap' /opt/cross/gcc-12.1.0-nolibc/s390x-linux/bin/s390x-linux-ld: coherent.c:(.text+0x740): undefined reference to `memunmap' /opt/cross/gcc-12.1.0-nolibc/s390x-linux/bin/s390x-linux-ld: drivers/crypto/ccree/cc_driver.o: in function `ccree_probe': cc_driver.c:(.text+0x3d8): undefined reference to `devm_ioremap_resource' /opt/cross/gcc-12.1.0-nolibc/s390x-linux/bin/s390x-linux-ld: drivers/crypto/ccree/cc_debugfs.o: in function `cc_debugfs_init': cc_debugfs.c:(.text+0x94): undefined reference to `debugfs_create_regset32' /opt/cross/gcc-12.1.0-nolibc/s390x-linux/bin/s390x-linux-ld: cc_debugfs.c:(.text+0x13a): undefined reference to `debugfs_create_regset32' -- 0-DAY CI Kernel Test Service https://01.org/lkp
