tree: git://people.freedesktop.org/~agd5f/linux.git drm-next-4.15-wip head: c9121e92b3a8e12a8b40e362c30073d6a6a5b794 commit: a4dec819c8bba6365eb893a4ca88db4dd1210110 [24/81] drm/ttm: Add helper functions to populate/map in one call (v2) config: frv-allmodconfig (attached as .config) compiler: frv-linux-gcc (GCC) 6.2.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross git checkout a4dec819c8bba6365eb893a4ca88db4dd1210110 # save the attached .config to linux build tree make.cross ARCH=frv

All errors (new ones prefixed by >>):

drivers/gpu//drm/ttm/ttm_page_alloc.c:923:5: error: redefinition of 'ttm_populate_and_map_pages' int ttm_populate_and_map_pages(struct device *dev, struct ttm_dma_tt *tt) ^~~~~~~~~~~~~~~~~~~~~~~~~~ In file included from drivers/gpu//drm/ttm/ttm_page_alloc.c:49:0: include/drm/ttm/ttm_page_alloc.h:120:19: note: previous definition of 'ttm_populate_and_map_pages' was here static inline int ttm_populate_and_map_pages(struct device *dev, struct ttm_dma_tt *tt) ^~~~~~~~~~~~~~~~~~~~~~~~~~

...

drivers/gpu//drm/ttm/ttm_page_alloc.c:950:6: error: redefinition of 'ttm_unmap_and_unpopulate_pages'

void ttm_unmap_and_unpopulate_pages(struct device *dev, struct ttm_dma_tt *tt) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ In file included from drivers/gpu//drm/ttm/ttm_page_alloc.c:49:0: include/drm/ttm/ttm_page_alloc.h:125:20: note: previous definition of 'ttm_unmap_and_unpopulate_pages' was here static inline void ttm_unmap_and_unpopulate_pages(struct device *dev, struct ttm_dma_tt *tt) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

vim +/ttm_unmap_and_unpopulate_pages +950 drivers/gpu//drm/ttm/ttm_page_alloc.c

922

923 int ttm_populate_and_map_pages(struct device *dev, struct ttm_dma_tt *tt)

924 { 925 unsigned i; 926 int r; 927 928 r = ttm_pool_populate(&tt->ttm); 929 if (r) 930 return r; 931 932 for (i = 0; i < tt->ttm.num_pages; i++) { 933 tt->dma_address[i] = dma_map_page(dev, tt->ttm.pages[i], 934 0, PAGE_SIZE, 935 DMA_BIDIRECTIONAL); 936 if (dma_mapping_error(dev, tt->dma_address[i])) { 937 while (i--) { 938 dma_unmap_page(dev, tt->dma_address[i], 939 PAGE_SIZE, DMA_BIDIRECTIONAL); 940 tt->dma_address[i] = 0; 941 } 942 ttm_pool_unpopulate(&tt->ttm); 943 return -EFAULT; 944 } 945 } 946 return 0; 947 } 948 EXPORT_SYMBOL(ttm_populate_and_map_pages); 949

950 void ttm_unmap_and_unpopulate_pages(struct device *dev, struct ttm_dma_tt *tt)

951 { 952 unsigned i; 953 954 for (i = 0; i < tt->ttm.num_pages; i++) { 955 if (tt->dma_address[i]) { 956 dma_unmap_page(dev, tt->dma_address[i], 957 PAGE_SIZE, DMA_BIDIRECTIONAL); 958 } 959 } 960 ttm_pool_unpopulate(&tt->ttm); 961 } 962 EXPORT_SYMBOL(ttm_unmap_and_unpopulate_pages); 963

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