Hi Jimmy, url: https://github.com/intel-lab-lkp/linux/commits/Jimmy-Su/UPSTREAM-media-ov8856-skip-OTP-read-in-non-zero-ACPI-D-state/20220510-232606 base: git://linuxtv.org/media_tree.git master config: nios2-randconfig-m031-20220512 (https://download.01.org/0day-ci/archive/20220513/202205131109.giBGpLnO-lkp@xxxxxxxxx/config) compiler: nios2-linux-gcc (GCC) 11.3.0 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> Reported-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx> smatch warnings: drivers/media/i2c/ov8856.c:1715 ov8856_identify_module() warn: maybe use && instead of & vim +1715 drivers/media/i2c/ov8856.c 0e014f1a8d546f Bingbu Cao 2021-12-15 1694 static int ov8856_identify_module(struct ov8856 *ov8856) 0e014f1a8d546f Bingbu Cao 2021-12-15 1695 { 0e014f1a8d546f Bingbu Cao 2021-12-15 1696 struct i2c_client *client = v4l2_get_subdevdata(&ov8856->sd); 0e014f1a8d546f Bingbu Cao 2021-12-15 1697 int ret; 25bf233398211c Jimmy Su 2022-05-10 1698 u32 val, width; 0e014f1a8d546f Bingbu Cao 2021-12-15 1699 0e014f1a8d546f Bingbu Cao 2021-12-15 1700 if (ov8856->identified) 0e014f1a8d546f Bingbu Cao 2021-12-15 1701 return 0; 0e014f1a8d546f Bingbu Cao 2021-12-15 1702 0e014f1a8d546f Bingbu Cao 2021-12-15 1703 ret = ov8856_read_reg(ov8856, OV8856_REG_CHIP_ID, 0e014f1a8d546f Bingbu Cao 2021-12-15 1704 OV8856_REG_VALUE_24BIT, &val); 0e014f1a8d546f Bingbu Cao 2021-12-15 1705 if (ret) 0e014f1a8d546f Bingbu Cao 2021-12-15 1706 return ret; 0e014f1a8d546f Bingbu Cao 2021-12-15 1707 0e014f1a8d546f Bingbu Cao 2021-12-15 1708 if (val != OV8856_CHIP_ID) { 0e014f1a8d546f Bingbu Cao 2021-12-15 1709 dev_err(&client->dev, "chip id mismatch: %x!=%x", 0e014f1a8d546f Bingbu Cao 2021-12-15 1710 OV8856_CHIP_ID, val); 0e014f1a8d546f Bingbu Cao 2021-12-15 1711 return -ENXIO; 0e014f1a8d546f Bingbu Cao 2021-12-15 1712 } 0e014f1a8d546f Bingbu Cao 2021-12-15 1713 25bf233398211c Jimmy Su 2022-05-10 1714 width = ov8856->cur_mode->width; 25bf233398211c Jimmy Su 2022-05-10 @1715 if (ov8856->acpi_skip_otp & ((width == 3280) | (width == 1640))) I think Smatch will not print a warning for this if ->acpi_skip_otp is declared as bool or if Smatch can determine that it is boolean from the context, but the kbuild-bot does not do cross function analysis. But to a human, the naming seems pretty likely that ov8856->acpi_skip_otp so && and & are equivalent. However && is more readable. 25bf233398211c Jimmy Su 2022-05-10 1716 goto otp_skip; 25bf233398211c Jimmy Su 2022-05-10 1717 0e014f1a8d546f Bingbu Cao 2021-12-15 1718 ret = ov8856_write_reg(ov8856, OV8856_REG_MODE_SELECT, 0e014f1a8d546f Bingbu Cao 2021-12-15 1719 OV8856_REG_VALUE_08BIT, OV8856_MODE_STREAMING); 0e014f1a8d546f Bingbu Cao 2021-12-15 1720 if (ret) 0e014f1a8d546f Bingbu Cao 2021-12-15 1721 return ret; 0e014f1a8d546f Bingbu Cao 2021-12-15 1722 0e014f1a8d546f Bingbu Cao 2021-12-15 1723 ret = ov8856_write_reg(ov8856, OV8856_OTP_MODE_CTRL, 0e014f1a8d546f Bingbu Cao 2021-12-15 1724 OV8856_REG_VALUE_08BIT, OV8856_OTP_MODE_AUTO); 0e014f1a8d546f Bingbu Cao 2021-12-15 1725 if (ret) { 0e014f1a8d546f Bingbu Cao 2021-12-15 1726 dev_err(&client->dev, "failed to set otp mode"); 0e014f1a8d546f Bingbu Cao 2021-12-15 1727 return ret; 0e014f1a8d546f Bingbu Cao 2021-12-15 1728 } 0e014f1a8d546f Bingbu Cao 2021-12-15 1729 -- 0-DAY CI Kernel Test Service https://01.org/lkp
