[staging:staging-testing 222/222] drivers/mtd/nand/raw/nand_legacy.c:42:17: sparse: warning: cast from restricted __le16

kbuild test robot lkp at intel.com
Tue Mar 17 23:54:30 UTC 2020


tree:   https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging.git staging-testing
head:   ba839b32d6f76a68919ed838e9375c47ca05a91a
commit: ba839b32d6f76a68919ed838e9375c47ca05a91a [222/222] staging: media: hantro: remove parentheses
reproduce:
        # apt-get install sparse
        # sparse version: 
        git checkout ba839b32d6f76a68919ed838e9375c47ca05a91a
        make ARCH=x86_64 allmodconfig
        make C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__'

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <lkp at intel.com>

All warnings (new ones prefixed by >>):

>> drivers/mtd/nand/raw/nand_legacy.c:42:17: sparse: warning: cast from restricted __le16

vim +42 drivers/mtd/nand/raw/nand_legacy.c

3d4af7c195850c Boris Brezillon 2018-09-07  32  
3d4af7c195850c Boris Brezillon 2018-09-07  33  /**
3d4af7c195850c Boris Brezillon 2018-09-07  34   * nand_read_byte16 - [DEFAULT] read one byte endianness aware from the chip
3d4af7c195850c Boris Brezillon 2018-09-07  35   * @chip: NAND chip object
3d4af7c195850c Boris Brezillon 2018-09-07  36   *
3d4af7c195850c Boris Brezillon 2018-09-07  37   * Default read function for 16bit buswidth with endianness conversion.
3d4af7c195850c Boris Brezillon 2018-09-07  38   *
3d4af7c195850c Boris Brezillon 2018-09-07  39   */
3d4af7c195850c Boris Brezillon 2018-09-07  40  static uint8_t nand_read_byte16(struct nand_chip *chip)
3d4af7c195850c Boris Brezillon 2018-09-07  41  {
3d4af7c195850c Boris Brezillon 2018-09-07 @42  	return (uint8_t) cpu_to_le16(readw(chip->legacy.IO_ADDR_R));
3d4af7c195850c Boris Brezillon 2018-09-07  43  }
3d4af7c195850c Boris Brezillon 2018-09-07  44  

:::::: The code at line 42 was first introduced by commit
:::::: 3d4af7c195850cfccaddc2cf03b010b95236b695 mtd: rawnand: Move legacy code to nand_legacy.c

:::::: TO: Boris Brezillon <boris.brezillon at bootlin.com>
:::::: CC: Miquel Raynal <miquel.raynal at bootlin.com>

---
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