tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 6dc544b66971c7f9909ff038b62149105272d26a commit: 2ba9d29c44cc046b46c275d654fa946a0781a540 [1849/2075] mtd: nand: mxc_nand: support software ECC config: nios2-randconfig-r133-20240528 (https://download.01.org/0day-ci/archive/20240528/202405282036.maEDO54Q-lkp@xxxxxxxxx/config) compiler: nios2-linux-gcc (GCC) 13.2.0 reproduce: (https://download.01.org/0day-ci/archive/20240528/202405282036.maEDO54Q-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/202405282036.maEDO54Q-lkp@xxxxxxxxx/ sparse warnings: (new ones prefixed by >>) >> drivers/mtd/nand/raw/mxc_nand.c:1479:26: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected unsigned short [noderef] [usertype] __iomem *t @@ got void *buf @@ drivers/mtd/nand/raw/mxc_nand.c:1479:26: sparse: expected unsigned short [noderef] [usertype] __iomem *t drivers/mtd/nand/raw/mxc_nand.c:1479:26: sparse: got void *buf >> drivers/mtd/nand/raw/mxc_nand.c:1516:65: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void *buf @@ got void [noderef] __iomem * @@ drivers/mtd/nand/raw/mxc_nand.c:1516:65: sparse: expected void *buf drivers/mtd/nand/raw/mxc_nand.c:1516:65: sparse: got void [noderef] __iomem * drivers/mtd/nand/raw/mxc_nand.c:1527:87: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void *buf @@ got void [noderef] __iomem * @@ drivers/mtd/nand/raw/mxc_nand.c:1527:87: sparse: expected void *buf drivers/mtd/nand/raw/mxc_nand.c:1527:87: sparse: got void [noderef] __iomem * vim +1479 drivers/mtd/nand/raw/mxc_nand.c 1476 1477 static void memff16_toio(void *buf, int n) 1478 { > 1479 __iomem u16 *t = buf; 1480 int i; 1481 1482 for (i = 0; i < (n >> 1); i++) 1483 __raw_writew(0xffff, t++); 1484 } 1485 1486 static void copy_page_to_sram(struct mtd_info *mtd, const void *buf, int buf_len) 1487 { 1488 struct nand_chip *this = mtd_to_nand(mtd); 1489 struct mxc_nand_host *host = nand_get_controller_data(this); 1490 unsigned int no_subpages = mtd->writesize / 512; 1491 int oob_per_subpage, i; 1492 1493 oob_per_subpage = (mtd->oobsize / no_subpages) & ~1; 1494 1495 /* 1496 * During a page write the i.MX NAND controller will read 512b from 1497 * main_area0 SRAM, then oob_per_subpage bytes from spare0 SRAM, then 1498 * 512b from main_area1 SRAM and so on until the full page is written. 1499 * For software ECC we want to have a 1:1 mapping between the raw page 1500 * data on the NAND chip and the view of the NAND core. This is 1501 * necessary to make the NAND_CMD_RNDOUT read the data it expects. 1502 * To accomplish this we have to write the data in the order the controller 1503 * reads it. This is reversed in copy_page_from_sram() below. 1504 * 1505 * buf_len can either be the full page including the OOB or user data only. 1506 * When it's user data only make sure that we fill up the rest of the 1507 * SRAM with 0xff. 1508 */ 1509 for (i = 0; i < no_subpages; i++) { 1510 int now = min(buf_len, 512); 1511 1512 if (now) 1513 memcpy16_toio(host->main_area0 + i * 512, buf, now); 1514 1515 if (now < 512) > 1516 memff16_toio(host->main_area0 + i * 512 + now, 512 - now); 1517 1518 buf += 512; 1519 buf_len -= now; 1520 1521 now = min(buf_len, oob_per_subpage); 1522 if (now) 1523 memcpy16_toio(host->spare0 + i * host->devtype_data->spare_len, 1524 buf, now); 1525 1526 if (now < oob_per_subpage) 1527 memff16_toio(host->spare0 + i * host->devtype_data->spare_len + now, 1528 oob_per_subpage - now); 1529 1530 buf += oob_per_subpage; 1531 buf_len -= now; 1532 } 1533 } 1534 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
