Hi Amireddy, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on robh/for-next] [also build test WARNING on linus/master v5.8-rc1 next-20200616] [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/Amireddy-Mallikarjuna-reddy/Add-Intel-LGM-soc-DMA-support/20200610-202116 base: https://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git for-next config: nds32-randconfig-r034-20200617 (attached as .config) compiler: nds32le-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 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=nds32 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>, old ones prefixed by <<): In file included from ./arch/nds32/include/generated/asm/bug.h:1, from include/linux/bug.h:5, from include/linux/debug_locks.h:7, from include/linux/mutex.h:21, from include/linux/notifier.h:14, from include/linux/clk.h:14, from drivers/dma/lgm/lgm-dma.c:9: include/linux/dma-mapping.h: In function 'dma_map_resource': arch/nds32/include/asm/memory.h:82:32: warning: comparison of unsigned expression >= 0 is always true [-Wtype-limits] 82 | #define pfn_valid(pfn) ((pfn) >= PHYS_PFN_OFFSET && (pfn) < (PHYS_PFN_OFFSET + max_mapnr)) | ^~ include/asm-generic/bug.h:139:27: note: in definition of macro 'WARN_ON_ONCE' 139 | int __ret_warn_once = !!(condition); | ^~~~~~~~~ include/linux/dma-mapping.h:352:19: note: in expansion of macro 'pfn_valid' 352 | if (WARN_ON_ONCE(pfn_valid(PHYS_PFN(phys_addr)))) | ^~~~~~~~~ drivers/dma/lgm/lgm-dma.c: At top level: >> drivers/dma/lgm/lgm-dma.c:729:5: warning: no previous prototype for 'intel_dma_chan_desc_cfg' [-Wmissing-prototypes] 729 | int intel_dma_chan_desc_cfg(struct dma_chan *chan, dma_addr_t desc_base, | ^~~~~~~~~~~~~~~~~~~~~~~ vim +/intel_dma_chan_desc_cfg +729 drivers/dma/lgm/lgm-dma.c 728 > 729 int intel_dma_chan_desc_cfg(struct dma_chan *chan, dma_addr_t desc_base, 730 int desc_num) 731 { 732 return ldma_chan_desc_cfg(to_ldma_chan(chan), desc_base, desc_num); 733 } 734 EXPORT_SYMBOL_GPL(intel_dma_chan_desc_cfg); 735 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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