Hi John, I love your patch! Yet something to improve: [auto build test ERROR on linus/master] [cannot apply to v5.4-rc1 next-20191002] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system. BTW, we also suggest to use '--base' option to specify the base tree in git format-patch, please see https://stackoverflow.com/a/37406982] url: https://github.com/0day-ci/linux/commits/John-Stultz/DMA-BUF-Heaps-destaging-ION/20191003-042849 config: sh-allmodconfig (attached as .config) compiler: sh4-linux-gcc (GCC) 7.4.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree GCC_VERSION=7.4.0 make.cross ARCH=sh If you fix the issue, kindly add following tag Reported-by: kbuild test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): drivers/dma-buf/heaps/heap-helpers.c: In function 'dma_heap_map_kernel': >> drivers/dma-buf/heaps/heap-helpers.c:43:10: error: implicit declaration of function 'vmap'; did you mean 'kmap'? [-Werror=implicit-function-declaration] vaddr = vmap(buffer->pages, buffer->pagecount, VM_MAP, PAGE_KERNEL); ^~~~ kmap drivers/dma-buf/heaps/heap-helpers.c:43:49: error: 'VM_MAP' undeclared (first use in this function); did you mean 'VM_MPX'? vaddr = vmap(buffer->pages, buffer->pagecount, VM_MAP, PAGE_KERNEL); ^~~~~~ VM_MPX drivers/dma-buf/heaps/heap-helpers.c:43:49: note: each undeclared identifier is reported only once for each function it appears in drivers/dma-buf/heaps/heap-helpers.c: In function 'dma_heap_buffer_destroy': drivers/dma-buf/heaps/heap-helpers.c:54:3: error: implicit declaration of function 'vunmap'; did you mean 'kunmap'? [-Werror=implicit-function-declaration] vunmap(buffer->vaddr); ^~~~~~ kunmap cc1: some warnings being treated as errors vim +43 drivers/dma-buf/heaps/heap-helpers.c 38 39 static void *dma_heap_map_kernel(struct heap_helper_buffer *buffer) 40 { 41 void *vaddr; 42 > 43 vaddr = vmap(buffer->pages, buffer->pagecount, VM_MAP, PAGE_KERNEL); 44 if (!vaddr) 45 return ERR_PTR(-ENOMEM); 46 47 return vaddr; 48 } 49 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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