Hi Florian, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on char-misc/char-misc-testing] [also build test WARNING on v5.15-rc1 next-20210913] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/0day-ci/linux/commits/Florian-Eckert/tpm-tpm_i2c_infin... base: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git 6880fa6c56601bb8ed59df6c30fd390cc5f6dd8f config: i386-randconfig-s001-20210913 (attached as .config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.4-dirty # https://github.com/0day-ci/linux/commit/454ecd483731a2a7c88ae1fa6e428f3c0... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Florian-Eckert/tpm-tpm_i2c_infineon-Fix-init-endian-vendor-check/20210913-201852 git checkout 454ecd483731a2a7c88ae1fa6e428f3c00c1669f # save the attached .config to linux build tree make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=i386 SHELL=/bin/bash drivers/char/tpm/ 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/char/tpm/tpm_i2c_infineon.c:643:20: sparse: sparse: restricted __le32 degrades to integer drivers/char/tpm/tpm_i2c_infineon.c:651:9: sparse: sparse: restricted __le32 degrades to integer vim +641 drivers/char/tpm/tpm_i2c_infineon.c aad628c1d91a6d Peter Huewe 2012-08-07 611 afc6d36912f3f3 Bill Pemberton 2012-11-19 612 static int tpm_tis_i2c_init(struct device *dev) aad628c1d91a6d Peter Huewe 2012-08-07 613 { 454ecd483731a2 Florian Eckert 2021-09-13 614 __le32 vendor; aad628c1d91a6d Peter Huewe 2012-08-07 615 int rc = 0; aad628c1d91a6d Peter Huewe 2012-08-07 616 struct tpm_chip *chip; aad628c1d91a6d Peter Huewe 2012-08-07 617 afb5abc262e962 Jarkko Sakkinen 2014-12-12 618 chip = tpmm_chip_alloc(dev, &tpm_tis_i2c); afb5abc262e962 Jarkko Sakkinen 2014-12-12 619 if (IS_ERR(chip)) afb5abc262e962 Jarkko Sakkinen 2014-12-12 620 return PTR_ERR(chip); aad628c1d91a6d Peter Huewe 2012-08-07 621 aad628c1d91a6d Peter Huewe 2012-08-07 622 /* Default timeouts */ af782f339a5d6e Christophe Ricard 2016-03-31 623 chip->timeout_a = msecs_to_jiffies(TIS_SHORT_TIMEOUT); af782f339a5d6e Christophe Ricard 2016-03-31 624 chip->timeout_b = msecs_to_jiffies(TIS_LONG_TIMEOUT); af782f339a5d6e Christophe Ricard 2016-03-31 625 chip->timeout_c = msecs_to_jiffies(TIS_SHORT_TIMEOUT); af782f339a5d6e Christophe Ricard 2016-03-31 626 chip->timeout_d = msecs_to_jiffies(TIS_SHORT_TIMEOUT); aad628c1d91a6d Peter Huewe 2012-08-07 627 aad628c1d91a6d Peter Huewe 2012-08-07 628 if (request_locality(chip, 0) != 0) { c61c86dd6e0a80 Peter Huewe 2013-03-04 629 dev_err(dev, "could not request locality\n"); aad628c1d91a6d Peter Huewe 2012-08-07 630 rc = -ENODEV; afb5abc262e962 Jarkko Sakkinen 2014-12-12 631 goto out_err; aad628c1d91a6d Peter Huewe 2012-08-07 632 } aad628c1d91a6d Peter Huewe 2012-08-07 633 aad628c1d91a6d Peter Huewe 2012-08-07 634 /* read four bytes from DID_VID register */ aad628c1d91a6d Peter Huewe 2012-08-07 635 if (iic_tpm_read(TPM_DID_VID(0), (u8 *)&vendor, 4) < 0) { c61c86dd6e0a80 Peter Huewe 2013-03-04 636 dev_err(dev, "could not read vendor id\n"); aad628c1d91a6d Peter Huewe 2012-08-07 637 rc = -EIO; aad628c1d91a6d Peter Huewe 2012-08-07 638 goto out_release; aad628c1d91a6d Peter Huewe 2012-08-07 639 } aad628c1d91a6d Peter Huewe 2012-08-07 640 c61c86dd6e0a80 Peter Huewe 2013-03-04 @641 if (vendor == TPM_TIS_I2C_DID_VID_9645) { c61c86dd6e0a80 Peter Huewe 2013-03-04 642 tpm_dev.chip_type = SLB9645; c61c86dd6e0a80 Peter Huewe 2013-03-04 643 } else if (vendor == TPM_TIS_I2C_DID_VID_9635) { c61c86dd6e0a80 Peter Huewe 2013-03-04 644 tpm_dev.chip_type = SLB9635; c61c86dd6e0a80 Peter Huewe 2013-03-04 645 } else { c61c86dd6e0a80 Peter Huewe 2013-03-04 646 dev_err(dev, "vendor id did not match! ID was %08x\n", vendor); aad628c1d91a6d Peter Huewe 2012-08-07 647 rc = -ENODEV; aad628c1d91a6d Peter Huewe 2012-08-07 648 goto out_release; aad628c1d91a6d Peter Huewe 2012-08-07 649 } aad628c1d91a6d Peter Huewe 2012-08-07 650 aad628c1d91a6d Peter Huewe 2012-08-07 651 dev_info(dev, "1.2 TPM (device-id 0x%X)\n", vendor >> 16); aad628c1d91a6d Peter Huewe 2012-08-07 652 aad628c1d91a6d Peter Huewe 2012-08-07 653 tpm_dev.chip = chip; aad628c1d91a6d Peter Huewe 2012-08-07 654 afb5abc262e962 Jarkko Sakkinen 2014-12-12 655 return tpm_chip_register(chip); aad628c1d91a6d Peter Huewe 2012-08-07 656 out_release: 56671c893e0e3e Christophe Ricard 2016-03-31 657 release_locality(chip, tpm_dev.locality, 1); aad628c1d91a6d Peter Huewe 2012-08-07 658 tpm_dev.client = NULL; aad628c1d91a6d Peter Huewe 2012-08-07 659 out_err: aad628c1d91a6d Peter Huewe 2012-08-07 660 return rc; aad628c1d91a6d Peter Huewe 2012-08-07 661 } aad628c1d91a6d Peter Huewe 2012-08-07 662 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org