tree: git://git.ti.com/ti-linux-kernel/ti-linux-kernel.git ti-rt-linux-5.4.y head: 4de1fa76539c49f87a9281232dcdfd25f21f1476 commit: 481b3c3bfdc83b10aedb9819d7c9f1dbc122a5da [4426/7496] misc: sram: Add dma-heap-export reserved SRAM area type config: m68k-randconfig-r032-20200614 (attached as .config) compiler: m68k-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 481b3c3bfdc83b10aedb9819d7c9f1dbc122a5da # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=m68k If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>, old ones prefixed by <<): In file included from include/linux/string.h:6, from include/linux/dma-mapping.h:6, from drivers/misc/sram-dma-heap.c:9: include/linux/scatterlist.h: In function 'sg_set_buf': arch/m68k/include/asm/page_no.h:33:50: warning: ordered comparison of pointer with null pointer [-Wextra] 33 | #define virt_addr_valid(kaddr) (((void *)(kaddr) >= (void *)PAGE_OFFSET) && | ^~ include/linux/compiler.h:78:42: note: in definition of macro 'unlikely' 78 | # define unlikely(x) __builtin_expect(!!(x), 0) | ^ include/linux/scatterlist.h:143:2: note: in expansion of macro 'BUG_ON' 143 | BUG_ON(!virt_addr_valid(buf)); | ^~~~~~ include/linux/scatterlist.h:143:10: note: in expansion of macro 'virt_addr_valid' 143 | BUG_ON(!virt_addr_valid(buf)); | ^~~~~~~~~~~~~~~ drivers/misc/sram-dma-heap.c: In function 'dma_heap_mmap': 126 | vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot); | ^~~~~~~~~~~~~~~~~~~ cc1: some warnings being treated as errors git remote add ti git://git.ti.com/ti-linux-kernel/ti-linux-kernel.git git remote update ti git checkout 481b3c3bfdc83b10aedb9819d7c9f1dbc122a5da vim +/pgprot_writecombine +126 drivers/misc/sram-dma-heap.c 481b3c3bfdc83b Andrew F. Davis 2020-02-19 119 481b3c3bfdc83b Andrew F. Davis 2020-02-19 120 static int dma_heap_mmap(struct dma_buf *dmabuf, struct vm_area_struct *vma) 481b3c3bfdc83b Andrew F. Davis 2020-02-19 121 { 481b3c3bfdc83b Andrew F. Davis 2020-02-19 122 struct sram_dma_heap_buffer *buffer = dmabuf->priv; 481b3c3bfdc83b Andrew F. Davis 2020-02-19 123 int ret; 481b3c3bfdc83b Andrew F. Davis 2020-02-19 124 481b3c3bfdc83b Andrew F. Davis 2020-02-19 125 /* SRAM mappings are not cached */ 481b3c3bfdc83b Andrew F. Davis 2020-02-19 @126 vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot); 481b3c3bfdc83b Andrew F. Davis 2020-02-19 127 481b3c3bfdc83b Andrew F. Davis 2020-02-19 128 ret = vm_iomap_memory(vma, buffer->paddr, buffer->len); 481b3c3bfdc83b Andrew F. Davis 2020-02-19 129 if (ret) 481b3c3bfdc83b Andrew F. Davis 2020-02-19 130 pr_err("Could not map buffer to userspace\n"); 481b3c3bfdc83b Andrew F. Davis 2020-02-19 131 481b3c3bfdc83b Andrew F. Davis 2020-02-19 132 return ret; 481b3c3bfdc83b Andrew F. Davis 2020-02-19 133 } 481b3c3bfdc83b Andrew F. Davis 2020-02-19 134 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org _______________________________________________ kbuild mailing list -- kbuild(a)lists.01.org To unsubscribe send an email to kbuild-leave(a)lists.01.org