Hi Jiancheng, [auto build test WARNING on v4.4-rc7] [cannot apply to next-20151223] [if your patch is applied to the wrong git tree, please drop us a note to help improving the system] url: https://github.com/0day-ci/linux/commits/Jiancheng-Xue/mtd-spi-nor-add-hisilicon-spi-nor-flash-controller-driver/20151230-104117 config: arm64-allmodconfig (attached as .config) reproduce: wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree make.cross ARCH=arm64 All warnings (new ones prefixed by >>): drivers/mtd/spi-nor/hisi-sfc.c: In function 'hisi_spi_nor_send_cmd': >> drivers/mtd/spi-nor/hisi-sfc.c:239:9: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast] reg = (u32)buf; ^ drivers/mtd/spi-nor/hisi-sfc.c: In function 'hisi_spi_nor_erase': >> drivers/mtd/spi-nor/hisi-sfc.c:376:6: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] (u8 *)(u32)offs, 0); ^ vim +239 drivers/mtd/spi-nor/hisi-sfc.c 233 hisi_spi_nor_cmd_prepare(host, cmd, buf, &op_cfg); 234 235 reg = FMC_CMD_CMD1(cmd); 236 writel(reg, host->regbase + FMC_CMD); 237 238 if (op_cfg & FMC_OP_ADDR_EN) { > 239 reg = (u32)buf; 240 writel(reg, host->regbase + FMC_ADDRL); 241 } 242 243 reg = OP_CFG_FM_CS(priv->chipselect); 244 if (op_cfg & FMC_OP_ADDR_EN) 245 reg |= OP_CFG_ADDR_NUM(nor->addr_width); 246 writel(reg, host->regbase + FMC_OP_CFG); 247 248 reg = FMC_DATA_NUM_CNT(len); 249 writel(reg, host->regbase + FMC_DATA_NUM); 250 251 writel(0xff, host->regbase + FMC_INT_CLR); 252 reg = op_cfg | FMC_OP_REG_OP_START; 253 writel(reg, host->regbase + FMC_OP); 254 wait_op_finish(host); 255 256 return 0; 257 } 258 259 static int hisi_spi_nor_read_reg(struct spi_nor *nor, u8 opcode, u8 *buf, 260 int len) 261 { 262 struct hifmc_priv *priv = nor->priv; 263 struct hifmc_host *host = priv->host; 264 int ret; 265 266 ret = hisi_spi_nor_send_cmd(nor, opcode, buf, len); 267 if (ret) 268 return ret; 269 270 memcpy(buf, host->iobase, len); 271 272 return ret; 273 } 274 275 static int hisi_spi_nor_write_reg(struct spi_nor *nor, u8 opcode, 276 u8 *buf, int len) 277 { 278 struct hifmc_priv *priv = nor->priv; 279 struct hifmc_host *host = priv->host; 280 281 if (len) 282 memcpy(host->iobase, buf, len); 283 284 return hisi_spi_nor_send_cmd(nor, opcode, buf, len); 285 } 286 287 static void hisi_spi_nor_dma_transfer(struct spi_nor *nor, u32 start_off, 288 u32 dma_buf, u32 len, u8 op_type) 289 { 290 struct hifmc_priv *priv = nor->priv; 291 struct hifmc_host *host = priv->host; 292 u8 if_type = 0, dummy = 0; 293 u8 w_cmd = 0, r_cmd = 0; 294 u32 reg; 295 296 writel(start_off, host->regbase + FMC_ADDRL); 297 298 if (op_type == FMC_OP_READ) { 299 if_type = get_if_type(nor->flash_read); 300 dummy = nor->read_dummy >> 3; 301 r_cmd = nor->read_opcode; 302 } else 303 w_cmd = nor->program_opcode; 304 305 reg = OP_CFG_FM_CS(priv->chipselect) 306 | OP_CFG_MEM_IF_TYPE(if_type) 307 | OP_CFG_ADDR_NUM(nor->addr_width) 308 | OP_CFG_DUMMY_NUM(dummy); 309 writel(reg, host->regbase + FMC_OP_CFG); 310 311 reg = FMC_DMA_LEN_SET(len); 312 writel(reg, host->regbase + FMC_DMA_LEN); 313 writel(dma_buf, host->regbase + FMC_DMA_SADDR_D0); 314 315 reg = OP_CTRL_RD_OPCODE(r_cmd) 316 | OP_CTRL_WR_OPCODE(w_cmd) 317 | OP_CTRL_RW_OP(op_type) 318 | OP_CTRL_DMA_OP_READY; 319 writel(0xff, host->regbase + FMC_INT_CLR); 320 writel(reg, host->regbase + FMC_OP_DMA); 321 wait_op_finish(host); 322 } 323 324 static int hisi_spi_nor_read(struct spi_nor *nor, loff_t from, size_t len, 325 size_t *retlen, u_char *read_buf) 326 { 327 struct hifmc_priv *priv = nor->priv; 328 struct hifmc_host *host = priv->host; 329 unsigned char *ptr = read_buf; 330 int num; 331 332 while (len > 0) { 333 num = (len >= HIFMC_DMA_MAX_LEN) 334 ? HIFMC_DMA_MAX_LEN : len; 335 hisi_spi_nor_dma_transfer(nor, from, host->dma_buffer, 336 num, FMC_OP_READ); 337 memcpy(ptr, host->buffer, num); 338 ptr += num; 339 from += num; 340 len -= num; 341 } 342 *retlen += (size_t)(ptr - read_buf); 343 344 return 0; 345 } 346 347 static void hisi_spi_nor_write(struct spi_nor *nor, loff_t to, 348 size_t len, size_t *retlen, const u_char *write_buf) 349 { 350 struct hifmc_priv *priv = nor->priv; 351 struct hifmc_host *host = priv->host; 352 const unsigned char *ptr = write_buf; 353 int num; 354 355 while (len > 0) { 356 if (to & HIFMC_DMA_MASK) 357 num = (HIFMC_DMA_MAX_LEN - (to & HIFMC_DMA_MASK)) 358 >= len ? len 359 : (HIFMC_DMA_MAX_LEN - (to & HIFMC_DMA_MASK)); 360 else 361 num = (len >= HIFMC_DMA_MAX_LEN) 362 ? HIFMC_DMA_MAX_LEN : len; 363 memcpy(host->buffer, ptr, num); 364 hisi_spi_nor_dma_transfer(nor, to, host->dma_buffer, num, 365 FMC_OP_WRITE); 366 to += num; 367 ptr += num; 368 len -= num; 369 } 370 *retlen += (size_t)(ptr - write_buf); 371 } 372 373 static int hisi_spi_nor_erase(struct spi_nor *nor, loff_t offs) 374 { 375 return hisi_spi_nor_send_cmd(nor, nor->erase_opcode, > 376 (u8 *)(u32)offs, 0); 377 } 378 379 static int hisi_spi_nor_probe(struct platform_device *pdev) --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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