Hi Vivek, Thank you for the patch! Yet something to improve: [auto build test ERROR on linus/master] [also build test ERROR on v5.0-rc1 next-20190107] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url: https://github.com/0day-ci/linux/commits/Vivek-Gautam/drm-prime-Use-sg_dma_len-macro-to-get-sg-s-length/20190107-181350 config: x86_64-randconfig-x013-201901 (attached as .config) compiler: gcc-7 (Debian 7.3.0-1) 7.3.0 reproduce: # save the attached .config to linux build tree make ARCH=x86_64 All errors (new ones prefixed by >>): drivers/gpu/drm/drm_prime.c: In function 'drm_prime_sg_to_page_addr_arrays': >> drivers/gpu/drm/drm_prime.c:948:9: error: implicit declaration of function 'sg_dma_length'; did you mean 'sg_dma_len'? [-Werror=implicit-function-declaration] len = sg_dma_length(sg); ^~~~~~~~~~~~~ sg_dma_len cc1: some warnings being treated as errors vim +948 drivers/gpu/drm/drm_prime.c 926 927 /** 928 * drm_prime_sg_to_page_addr_arrays - convert an sg table into a page array 929 * @sgt: scatter-gather table to convert 930 * @pages: optional array of page pointers to store the page array in 931 * @addrs: optional array to store the dma bus address of each page 932 * @max_entries: size of both the passed-in arrays 933 * 934 * Exports an sg table into an array of pages and addresses. This is currently 935 * required by the TTM driver in order to do correct fault handling. 936 */ 937 int drm_prime_sg_to_page_addr_arrays(struct sg_table *sgt, struct page **pages, 938 dma_addr_t *addrs, int max_entries) 939 { 940 unsigned count; 941 struct scatterlist *sg; 942 struct page *page; 943 u32 len, index; 944 dma_addr_t addr; 945 946 index = 0; 947 for_each_sg(sgt->sgl, sg, sgt->nents, count) { > 948 len = sg_dma_length(sg); 949 page = sg_page(sg); 950 addr = sg_dma_address(sg); 951 952 while (len > 0) { 953 if (WARN_ON(index >= max_entries)) 954 return -1; 955 if (pages) 956 pages[index] = page; 957 if (addrs) 958 addrs[index] = addr; 959 960 page++; 961 addr += PAGE_SIZE; 962 len -= PAGE_SIZE; 963 index++; 964 } 965 } 966 return 0; 967 } 968 EXPORT_SYMBOL(drm_prime_sg_to_page_addr_arrays); 969 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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