Hi Frank, kernel test robot noticed the following build warnings: [auto build test WARNING on vkoul-dmaengine/next] [also build test WARNING on linus/master v6.7-rc1 next-20231117] [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/Frank-Li/dmaengine-fsl-edma-involve-help-macro-fsl_edma_set-get-_tcd/20231117-062946 base: https://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine.git next patch link: https://lore.kernel.org/r/20231116222743.2984776-4-Frank.Li%40nxp.com patch subject: [PATCH v2 3/5] dmaengine: mcf-edma: force type conversion for TCD pointer config: csky-randconfig-r123-20231117 (https://download.01.org/0day-ci/archive/20231118/202311180508.h4QYgZRC-lkp@xxxxxxxxx/config) compiler: csky-linux-gcc (GCC) 13.2.0 reproduce: (https://download.01.org/0day-ci/archive/20231118/202311180508.h4QYgZRC-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/202311180508.h4QYgZRC-lkp@xxxxxxxxx/ sparse warnings: (new ones prefixed by >>) >> drivers/dma/mcf-edma-main.c:205:35: sparse: sparse: cast removes address space '__iomem' of expression >> drivers/dma/mcf-edma-main.c:205:35: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] __iomem *addr @@ got restricted __le16 * @@ drivers/dma/mcf-edma-main.c:205:35: sparse: expected void volatile [noderef] __iomem *addr drivers/dma/mcf-edma-main.c:205:35: sparse: got restricted __le16 * drivers/dma/mcf-edma-main.c: note: in included file (through include/linux/mmzone.h, include/linux/gfp.h, include/linux/umh.h, include/linux/kmod.h, ...): include/linux/page-flags.h:242:46: sparse: sparse: self-comparison always evaluates to false vim +/__iomem +205 drivers/dma/mcf-edma-main.c 152 153 static int mcf_edma_probe(struct platform_device *pdev) 154 { 155 struct mcf_edma_platform_data *pdata; 156 struct fsl_edma_engine *mcf_edma; 157 struct edma_regs *regs; 158 int ret, i, chans; 159 160 pdata = dev_get_platdata(&pdev->dev); 161 if (!pdata) { 162 dev_err(&pdev->dev, "no platform data supplied\n"); 163 return -EINVAL; 164 } 165 166 if (!pdata->dma_channels) { 167 dev_info(&pdev->dev, "setting default channel number to 64"); 168 chans = 64; 169 } else { 170 chans = pdata->dma_channels; 171 } 172 173 mcf_edma = devm_kzalloc(&pdev->dev, struct_size(mcf_edma, chans, chans), 174 GFP_KERNEL); 175 if (!mcf_edma) 176 return -ENOMEM; 177 178 mcf_edma->n_chans = chans; 179 180 /* Set up drvdata for ColdFire edma */ 181 mcf_edma->drvdata = &mcf_data; 182 mcf_edma->big_endian = 1; 183 184 mutex_init(&mcf_edma->fsl_edma_mutex); 185 186 mcf_edma->membase = devm_platform_ioremap_resource(pdev, 0); 187 if (IS_ERR(mcf_edma->membase)) 188 return PTR_ERR(mcf_edma->membase); 189 190 fsl_edma_setup_regs(mcf_edma); 191 regs = &mcf_edma->regs; 192 193 INIT_LIST_HEAD(&mcf_edma->dma_dev.channels); 194 for (i = 0; i < mcf_edma->n_chans; i++) { 195 struct fsl_edma_chan *mcf_chan = &mcf_edma->chans[i]; 196 197 mcf_chan->edma = mcf_edma; 198 mcf_chan->slave_id = i; 199 mcf_chan->idle = true; 200 mcf_chan->dma_dir = DMA_NONE; 201 mcf_chan->vchan.desc_free = fsl_edma_free_desc; 202 vchan_init(&mcf_chan->vchan, &mcf_edma->dma_dev); 203 mcf_chan->tcd = mcf_edma->membase + EDMA_TCD 204 + i * sizeof(struct fsl_edma_hw_tcd); > 205 iowrite32(0x0, &((struct fsl_edma_hw_tcd *)mcf_chan->tcd)->csr); 206 } 207 208 iowrite32(~0, regs->inth); 209 iowrite32(~0, regs->intl); 210 211 ret = mcf_edma->drvdata->setup_irq(pdev, mcf_edma); 212 if (ret) 213 return ret; 214 215 dma_cap_set(DMA_PRIVATE, mcf_edma->dma_dev.cap_mask); 216 dma_cap_set(DMA_SLAVE, mcf_edma->dma_dev.cap_mask); 217 dma_cap_set(DMA_CYCLIC, mcf_edma->dma_dev.cap_mask); 218 219 mcf_edma->dma_dev.dev = &pdev->dev; 220 mcf_edma->dma_dev.device_alloc_chan_resources = 221 fsl_edma_alloc_chan_resources; 222 mcf_edma->dma_dev.device_free_chan_resources = 223 fsl_edma_free_chan_resources; 224 mcf_edma->dma_dev.device_config = fsl_edma_slave_config; 225 mcf_edma->dma_dev.device_prep_dma_cyclic = 226 fsl_edma_prep_dma_cyclic; 227 mcf_edma->dma_dev.device_prep_slave_sg = fsl_edma_prep_slave_sg; 228 mcf_edma->dma_dev.device_tx_status = fsl_edma_tx_status; 229 mcf_edma->dma_dev.device_pause = fsl_edma_pause; 230 mcf_edma->dma_dev.device_resume = fsl_edma_resume; 231 mcf_edma->dma_dev.device_terminate_all = fsl_edma_terminate_all; 232 mcf_edma->dma_dev.device_issue_pending = fsl_edma_issue_pending; 233 234 mcf_edma->dma_dev.src_addr_widths = FSL_EDMA_BUSWIDTHS; 235 mcf_edma->dma_dev.dst_addr_widths = FSL_EDMA_BUSWIDTHS; 236 mcf_edma->dma_dev.directions = 237 BIT(DMA_DEV_TO_MEM) | BIT(DMA_MEM_TO_DEV); 238 239 mcf_edma->dma_dev.filter.fn = mcf_edma_filter_fn; 240 mcf_edma->dma_dev.filter.map = pdata->slave_map; 241 mcf_edma->dma_dev.filter.mapcnt = pdata->slavecnt; 242 243 platform_set_drvdata(pdev, mcf_edma); 244 245 ret = dma_async_device_register(&mcf_edma->dma_dev); 246 if (ret) { 247 dev_err(&pdev->dev, 248 "Can't register Freescale eDMA engine. (%d)\n", ret); 249 return ret; 250 } 251 252 /* Enable round robin arbitration */ 253 iowrite32(EDMA_CR_ERGA | EDMA_CR_ERCA, regs->cr); 254 255 return 0; 256 } 257 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
