[kbuild-all] drivers/mtd/nand/raw/sh_flctl.c:510:17: sparse: sparse: incorrect type in assignment (different base types)

tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 142b507f911c5a502dbb8f603216cb0ea8a79a48 commit: 005b73d0dd83c9cb9420a196bea8070cde30ecac m68knommu: __force type casts for raw IO access date: 10 months ago config: m68k-randconfig-s032-20210510 (attached as .config) compiler: m68k-linux-gcc (GCC) 9.3.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # apt-get install sparse # sparse version: v0.6.3-341-g8af24329-dirty # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit... git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 005b73d0dd83c9cb9420a196bea8070cde30ecac # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' W=1 ARCH=m68k If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; sparse warnings: (new ones prefixed by >>) drivers/mtd/nand/raw/sh_flctl.c:456:16: sparse: sparse: cast to restricted __le32 drivers/mtd/nand/raw/sh_flctl.c:456:16: sparse: sparse: cast to restricted __le32 drivers/mtd/nand/raw/sh_flctl.c:456:16: sparse: sparse: cast to restricted __le32 drivers/mtd/nand/raw/sh_flctl.c:456:16: sparse: sparse: cast to restricted __le32 drivers/mtd/nand/raw/sh_flctl.c:456:16: sparse: sparse: cast to restricted __le32 drivers/mtd/nand/raw/sh_flctl.c:456:16: sparse: sparse: cast to restricted __le32 drivers/mtd/nand/raw/sh_flctl.c:479:26: sparse: sparse: cast to restricted __be32 drivers/mtd/nand/raw/sh_flctl.c:494:38: sparse: sparse: cast to restricted __be32 drivers/mtd/nand/raw/sh_flctl.c:510:17: sparse: expected unsigned int volatile [usertype] drivers/mtd/nand/raw/sh_flctl.c:510:17: sparse: got restricted __be32 [usertype] drivers/mtd/nand/raw/sh_flctl.c:523:24: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned long @@ got restricted __be32 [usertype] @@ drivers/mtd/nand/raw/sh_flctl.c:523:24: sparse: expected unsigned long drivers/mtd/nand/raw/sh_flctl.c:523:24: sparse: got restricted __be32 [usertype] vim +510 drivers/mtd/nand/raw/sh_flctl.c 83738d87e3a0a4 drivers/mtd/nand/sh_flctl.c Bastian Hecht 2012-10-19 447 6028aa01f759a1 drivers/mtd/nand/sh_flctl.c Yoshihiro Shimoda 2008-10-14 448 static void read_datareg(struct sh_flctl *flctl, int offset) 6028aa01f759a1 drivers/mtd/nand/sh_flctl.c Yoshihiro Shimoda 2008-10-14 449 { 6028aa01f759a1 drivers/mtd/nand/sh_flctl.c Yoshihiro Shimoda 2008-10-14 450 unsigned long data; 6028aa01f759a1 drivers/mtd/nand/sh_flctl.c Yoshihiro Shimoda 2008-10-14 451 unsigned long *buf = (unsigned long *)&flctl->done_buff[offset]; 6028aa01f759a1 drivers/mtd/nand/sh_flctl.c Yoshihiro Shimoda 2008-10-14 452 6028aa01f759a1 drivers/mtd/nand/sh_flctl.c Yoshihiro Shimoda 2008-10-14 453 wait_completion(flctl); 6028aa01f759a1 drivers/mtd/nand/sh_flctl.c Yoshihiro Shimoda 2008-10-14 454 6028aa01f759a1 drivers/mtd/nand/sh_flctl.c Yoshihiro Shimoda 2008-10-14 455 data = readl(FLDATAR(flctl)); 6028aa01f759a1 drivers/mtd/nand/sh_flctl.c Yoshihiro Shimoda 2008-10-14 @456 *buf = le32_to_cpu(data); 6028aa01f759a1 drivers/mtd/nand/sh_flctl.c Yoshihiro Shimoda 2008-10-14 457 } 6028aa01f759a1 drivers/mtd/nand/sh_flctl.c Yoshihiro Shimoda 2008-10-14 458 6028aa01f759a1 drivers/mtd/nand/sh_flctl.c Yoshihiro Shimoda 2008-10-14 459 static void read_fiforeg(struct sh_flctl *flctl, int rlen, int offset) 6028aa01f759a1 drivers/mtd/nand/sh_flctl.c Yoshihiro Shimoda 2008-10-14 460 { 6028aa01f759a1 drivers/mtd/nand/sh_flctl.c Yoshihiro Shimoda 2008-10-14 461 int i, len_4align; 6028aa01f759a1 drivers/mtd/nand/sh_flctl.c Yoshihiro Shimoda 2008-10-14 462 unsigned long *buf = (unsigned long *)&flctl->done_buff[offset]; 6028aa01f759a1 drivers/mtd/nand/sh_flctl.c Yoshihiro Shimoda 2008-10-14 463 6028aa01f759a1 drivers/mtd/nand/sh_flctl.c Yoshihiro Shimoda 2008-10-14 464 len_4align = (rlen + 3) / 4; 6028aa01f759a1 drivers/mtd/nand/sh_flctl.c Yoshihiro Shimoda 2008-10-14 465 83738d87e3a0a4 drivers/mtd/nand/sh_flctl.c Bastian Hecht 2012-10-19 466 /* initiate DMA transfer */ 83738d87e3a0a4 drivers/mtd/nand/sh_flctl.c Bastian Hecht 2012-10-19 467 if (flctl->chan_fifo0_rx && rlen >= 32 && e2bfa4ca23d9b5 drivers/mtd/nand/raw/sh_flctl.c Nathan Chancellor 2018-09-20 468 flctl_dma_fifo0_transfer(flctl, buf, rlen, DMA_FROM_DEVICE) > 0) 83738d87e3a0a4 drivers/mtd/nand/sh_flctl.c Bastian Hecht 2012-10-19 469 goto convert; /* DMA success */ 83738d87e3a0a4 drivers/mtd/nand/sh_flctl.c Bastian Hecht 2012-10-19 470 83738d87e3a0a4 drivers/mtd/nand/sh_flctl.c Bastian Hecht 2012-10-19 471 /* do polling transfer */ 6028aa01f759a1 drivers/mtd/nand/sh_flctl.c Yoshihiro Shimoda 2008-10-14 472 for (i = 0; i < len_4align; i++) { 6028aa01f759a1 drivers/mtd/nand/sh_flctl.c Yoshihiro Shimoda 2008-10-14 473 wait_rfifo_ready(flctl); 3166df0d0424ef drivers/mtd/nand/sh_flctl.c Bastian Hecht 2012-05-14 474 buf[i] = readl(FLDTFIFO(flctl)); 6028aa01f759a1 drivers/mtd/nand/sh_flctl.c Yoshihiro Shimoda 2008-10-14 475 } 83738d87e3a0a4 drivers/mtd/nand/sh_flctl.c Bastian Hecht 2012-10-19 476 83738d87e3a0a4 drivers/mtd/nand/sh_flctl.c Bastian Hecht 2012-10-19 477 convert: 83738d87e3a0a4 drivers/mtd/nand/sh_flctl.c Bastian Hecht 2012-10-19 478 for (i = 0; i < len_4align; i++) 83738d87e3a0a4 drivers/mtd/nand/sh_flctl.c Bastian Hecht 2012-10-19 479 buf[i] = be32_to_cpu(buf[i]); 6028aa01f759a1 drivers/mtd/nand/sh_flctl.c Yoshihiro Shimoda 2008-10-14 480 } 6028aa01f759a1 drivers/mtd/nand/sh_flctl.c Yoshihiro Shimoda 2008-10-14 481 6667a6d58e25d3 drivers/mtd/nand/sh_flctl.c Bastian Hecht 2012-05-14 482 static enum flctl_ecc_res_t read_ecfiforeg 6667a6d58e25d3 drivers/mtd/nand/sh_flctl.c Bastian Hecht 2012-05-14 483 (struct sh_flctl *flctl, uint8_t *buff, int sector) 6028aa01f759a1 drivers/mtd/nand/sh_flctl.c Yoshihiro Shimoda 2008-10-14 484 { 6028aa01f759a1 drivers/mtd/nand/sh_flctl.c Yoshihiro Shimoda 2008-10-14 485 int i; 6667a6d58e25d3 drivers/mtd/nand/sh_flctl.c Bastian Hecht 2012-05-14 486 enum flctl_ecc_res_t res; 6028aa01f759a1 drivers/mtd/nand/sh_flctl.c Yoshihiro Shimoda 2008-10-14 487 unsigned long *ecc_buf = (unsigned long *)buff; 6028aa01f759a1 drivers/mtd/nand/sh_flctl.c Yoshihiro Shimoda 2008-10-14 488 6667a6d58e25d3 drivers/mtd/nand/sh_flctl.c Bastian Hecht 2012-05-14 489 res = wait_recfifo_ready(flctl , sector); 6667a6d58e25d3 drivers/mtd/nand/sh_flctl.c Bastian Hecht 2012-05-14 490 6667a6d58e25d3 drivers/mtd/nand/sh_flctl.c Bastian Hecht 2012-05-14 491 if (res != FL_ERROR) { 6028aa01f759a1 drivers/mtd/nand/sh_flctl.c Yoshihiro Shimoda 2008-10-14 492 for (i = 0; i < 4; i++) { 6667a6d58e25d3 drivers/mtd/nand/sh_flctl.c Bastian Hecht 2012-05-14 493 ecc_buf[i] = readl(FLECFIFO(flctl)); 6028aa01f759a1 drivers/mtd/nand/sh_flctl.c Yoshihiro Shimoda 2008-10-14 494 ecc_buf[i] = be32_to_cpu(ecc_buf[i]); 6028aa01f759a1 drivers/mtd/nand/sh_flctl.c Yoshihiro Shimoda 2008-10-14 495 } 6667a6d58e25d3 drivers/mtd/nand/sh_flctl.c Bastian Hecht 2012-05-14 496 } 6028aa01f759a1 drivers/mtd/nand/sh_flctl.c Yoshihiro Shimoda 2008-10-14 497 6667a6d58e25d3 drivers/mtd/nand/sh_flctl.c Bastian Hecht 2012-05-14 498 return res; 6028aa01f759a1 drivers/mtd/nand/sh_flctl.c Yoshihiro Shimoda 2008-10-14 499 } 6028aa01f759a1 drivers/mtd/nand/sh_flctl.c Yoshihiro Shimoda 2008-10-14 500 e8a9d8f31c592e drivers/mtd/nand/sh_flctl.c Bastian Hecht 2012-10-19 501 static void write_fiforeg(struct sh_flctl *flctl, int rlen, e8a9d8f31c592e drivers/mtd/nand/sh_flctl.c Bastian Hecht 2012-10-19 502 unsigned int offset) 6028aa01f759a1 drivers/mtd/nand/sh_flctl.c Yoshihiro Shimoda 2008-10-14 503 { 6028aa01f759a1 drivers/mtd/nand/sh_flctl.c Yoshihiro Shimoda 2008-10-14 504 int i, len_4align; e8a9d8f31c592e drivers/mtd/nand/sh_flctl.c Bastian Hecht 2012-10-19 505 unsigned long *buf = (unsigned long *)&flctl->done_buff[offset]; 6028aa01f759a1 drivers/mtd/nand/sh_flctl.c Yoshihiro Shimoda 2008-10-14 506 6028aa01f759a1 drivers/mtd/nand/sh_flctl.c Yoshihiro Shimoda 2008-10-14 507 len_4align = (rlen + 3) / 4; 6028aa01f759a1 drivers/mtd/nand/sh_flctl.c Yoshihiro Shimoda 2008-10-14 508 for (i = 0; i < len_4align; i++) { 6028aa01f759a1 drivers/mtd/nand/sh_flctl.c Yoshihiro Shimoda 2008-10-14 509 wait_wfifo_ready(flctl); e8a9d8f31c592e drivers/mtd/nand/sh_flctl.c Bastian Hecht 2012-10-19 @510 writel(cpu_to_be32(buf[i]), FLDTFIFO(flctl)); 6028aa01f759a1 drivers/mtd/nand/sh_flctl.c Yoshihiro Shimoda 2008-10-14 511 } 6028aa01f759a1 drivers/mtd/nand/sh_flctl.c Yoshihiro Shimoda 2008-10-14 512 } 6028aa01f759a1 drivers/mtd/nand/sh_flctl.c Yoshihiro Shimoda 2008-10-14 513 :::::: The code at line 510 was first introduced by commit :::::: e8a9d8f31c592eea89f1b0d3fd425e7a96944e88 mtd: sh_flctl: Minor cleanups :::::: TO: Bastian Hecht <hechtb(a)googlemail.com&gt; :::::: CC: Artem Bityutskiy <artem.bityutskiy(a)linux.intel.com&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org