Hi Inochi, kernel test robot noticed the following build warnings: [auto build test WARNING on vkoul-dmaengine/next] [also build test WARNING on robh/for-next krzk-dt/for-next linus/master v6.9-rc3 next-20240410] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Inochi-Amaoto/dt-bindings-dmaengine-Add-dma-multiplexer-for-CV18XX-SG200X-series-SoC/20240410-092207 base: https://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine.git next patch link: https://lore.kernel.org/r/IA1PR20MB495310B8E4D7A6705A112004BB062%40IA1PR20MB4953.namprd20.prod.outlook.com patch subject: [PATCH v7 3/3] dmaengine: add driver for Sophgo CV18XX/SG200X dmamux config: riscv-allyesconfig (https://download.01.org/0day-ci/archive/20240411/202404111148.YVXpdPke-lkp@xxxxxxxxx/config) compiler: clang version 19.0.0git (https://github.com/llvm/llvm-project 8b3b4a92adee40483c27f26c478a384cd69c6f05) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240411/202404111148.YVXpdPke-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202404111148.YVXpdPke-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): In file included from drivers/dma/cv1800-dmamux.c:8: In file included from include/linux/of_dma.h:14: In file included from include/linux/dmaengine.h:12: In file included from include/linux/scatterlist.h:8: In file included from include/linux/mm.h:2208: include/linux/vmstat.h:508:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion] 508 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS + | ~~~~~~~~~~~~~~~~~~~~~ ^ 509 | item]; | ~~~~ include/linux/vmstat.h:515:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion] 515 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS + | ~~~~~~~~~~~~~~~~~~~~~ ^ 516 | NR_VM_NUMA_EVENT_ITEMS + | ~~~~~~~~~~~~~~~~~~~~~~ include/linux/vmstat.h:522:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion] 522 | return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_" | ~~~~~~~~~~~ ^ ~~~ include/linux/vmstat.h:527:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion] 527 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS + | ~~~~~~~~~~~~~~~~~~~~~ ^ 528 | NR_VM_NUMA_EVENT_ITEMS + | ~~~~~~~~~~~~~~~~~~~~~~ include/linux/vmstat.h:536:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion] 536 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS + | ~~~~~~~~~~~~~~~~~~~~~ ^ 537 | NR_VM_NUMA_EVENT_ITEMS + | ~~~~~~~~~~~~~~~~~~~~~~ >> drivers/dma/cv1800-dmamux.c:191:22: warning: unused variable 'dma_master' [-Wunused-variable] 191 | struct device_node *dma_master; | ^~~~~~~~~~ 6 warnings generated. vim +/dma_master +191 drivers/dma/cv1800-dmamux.c 183 184 static int cv1800_dmamux_probe(struct platform_device *pdev) 185 { 186 struct device *dev = &pdev->dev; 187 struct device_node *mux_node = dev->of_node; 188 struct cv1800_dmamux_data *data; 189 struct cv1800_dmamux_map *tmp; 190 struct device *parent = dev->parent; > 191 struct device_node *dma_master; 192 struct regmap *regmap = NULL; 193 unsigned int i; 194 195 if (!parent) 196 return -ENODEV; 197 198 regmap = device_node_to_regmap(parent->of_node); 199 if (IS_ERR(regmap)) 200 return PTR_ERR(regmap); 201 202 data = devm_kmalloc(dev, sizeof(*data), GFP_KERNEL); 203 if (!data) 204 return -ENOMEM; 205 206 spin_lock_init(&data->lock); 207 init_llist_head(&data->free_maps); 208 209 for (i = 0; i <= MAX_DMA_CH_ID; i++) { 210 tmp = devm_kmalloc(dev, sizeof(*tmp), GFP_KERNEL); 211 if (!tmp) { 212 /* It is OK for not allocating all channel */ 213 dev_warn(dev, "can not allocate channel %u\n", i); 214 continue; 215 } 216 217 init_llist_node(&tmp->node); 218 tmp->channel = i; 219 llist_add(&tmp->node, &data->free_maps); 220 } 221 222 /* if no channel is allocated, the probe must fail */ 223 if (llist_empty(&data->free_maps)) 224 return -ENOMEM; 225 226 data->regmap = regmap; 227 data->dmarouter.dev = dev; 228 data->dmarouter.route_free = cv1800_dmamux_free; 229 230 platform_set_drvdata(pdev, data); 231 232 return of_dma_router_register(mux_node, 233 cv1800_dmamux_route_allocate, 234 &data->dmarouter); 235 } 236 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
