tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 86ed57fd8c93fdfaabb4f58e78455180fa7d8a84 commit: a389ba5e5df26c9b904434677fd00cde641e4745 [9509/9522] slab: clean up function declarations config: powerpc-allyesconfig (attached as .config) compiler: powerpc64-linux-gcc (GCC) 11.2.0 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: v0.6.3-348-gf0e6938b-dirty # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commi... git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git git fetch --no-tags linux-next master git checkout a389ba5e5df26c9b904434677fd00cde641e4745 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=powerpc 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_ibmvtpm.c:125:30: sparse: sparse: cast removes address space '__iomem' of expression drivers/char/tpm/tpm_ibmvtpm.c:126:23: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void *p @@ got void [noderef] __iomem *rtce_buf @@ drivers/char/tpm/tpm_ibmvtpm.c:126:23: sparse: expected void *p drivers/char/tpm/tpm_ibmvtpm.c:126:23: sparse: got void [noderef] __iomem *rtce_buf drivers/char/tpm/tpm_ibmvtpm.c:229:17: sparse: sparse: cast removes address space '__iomem' of expression drivers/char/tpm/tpm_ibmvtpm.c:366:30: sparse: expected void const *objp drivers/char/tpm/tpm_ibmvtpm.c:366:30: sparse: got void [noderef] __iomem *rtce_buf drivers/char/tpm/tpm_ibmvtpm.c:525:43: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected void [noderef] __iomem *rtce_buf @@ got void * @@ drivers/char/tpm/tpm_ibmvtpm.c:525:43: sparse: expected void [noderef] __iomem *rtce_buf drivers/char/tpm/tpm_ibmvtpm.c:525:43: sparse: got void * drivers/char/tpm/tpm_ibmvtpm.c:532:52: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void *ptr @@ got void [noderef] __iomem *rtce_buf @@ drivers/char/tpm/tpm_ibmvtpm.c:532:52: sparse: expected void *ptr drivers/char/tpm/tpm_ibmvtpm.c:532:52: sparse: got void [noderef] __iomem *rtce_buf drivers/char/tpm/tpm_ibmvtpm.c:538:46: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const *objp @@ got void [noderef] __iomem *rtce_buf @@ drivers/char/tpm/tpm_ibmvtpm.c:538:46: sparse: expected void const *objp drivers/char/tpm/tpm_ibmvtpm.c:538:46: sparse: got void [noderef] __iomem *rtce_buf vim +366 drivers/char/tpm/tpm_ibmvtpm.c 132f76294744244 Ashley Lai 2012-08-22 336 132f76294744244 Ashley Lai 2012-08-22 337 /** 132f76294744244 Ashley Lai 2012-08-22 338 * tpm_ibmvtpm_remove - ibm vtpm remove entry point 132f76294744244 Ashley Lai 2012-08-22 339 * @vdev: vio device struct 132f76294744244 Ashley Lai 2012-08-22 340 * 93c12f293f87982 Winkler, Tomas 2016-11-23 341 * Return: Always 0. 132f76294744244 Ashley Lai 2012-08-22 342 */ 386a966f5ce71a0 Uwe Kleine-König 2021-02-25 343 static void tpm_ibmvtpm_remove(struct vio_dev *vdev) 132f76294744244 Ashley Lai 2012-08-22 344 { 9e0d39d8a6a0a88 Christophe Ricard 2016-03-31 345 struct tpm_chip *chip = dev_get_drvdata(&vdev->dev); 9e0d39d8a6a0a88 Christophe Ricard 2016-03-31 346 struct ibmvtpm_dev *ibmvtpm = dev_get_drvdata(&chip->dev); 132f76294744244 Ashley Lai 2012-08-22 347 int rc = 0; 132f76294744244 Ashley Lai 2012-08-22 348 afb5abc262e9620 Jarkko Sakkinen 2014-12-12 349 tpm_chip_unregister(chip); afb5abc262e9620 Jarkko Sakkinen 2014-12-12 350 132f76294744244 Ashley Lai 2012-08-22 351 free_irq(vdev->irq, ibmvtpm); 132f76294744244 Ashley Lai 2012-08-22 352 132f76294744244 Ashley Lai 2012-08-22 353 do { 132f76294744244 Ashley Lai 2012-08-22 354 if (rc) 132f76294744244 Ashley Lai 2012-08-22 355 msleep(100); 132f76294744244 Ashley Lai 2012-08-22 356 rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address); 132f76294744244 Ashley Lai 2012-08-22 357 } while (rc == H_BUSY || H_IS_LONG_BUSY(rc)); 132f76294744244 Ashley Lai 2012-08-22 358 132f76294744244 Ashley Lai 2012-08-22 359 dma_unmap_single(ibmvtpm->dev, ibmvtpm->crq_dma_handle, 132f76294744244 Ashley Lai 2012-08-22 360 CRQ_RES_BUF_SIZE, DMA_BIDIRECTIONAL); 132f76294744244 Ashley Lai 2012-08-22 361 free_page((unsigned long)ibmvtpm->crq_queue.crq_addr); 132f76294744244 Ashley Lai 2012-08-22 362 132f76294744244 Ashley Lai 2012-08-22 363 if (ibmvtpm->rtce_buf) { 132f76294744244 Ashley Lai 2012-08-22 364 dma_unmap_single(ibmvtpm->dev, ibmvtpm->rtce_dma_handle, 132f76294744244 Ashley Lai 2012-08-22 365 ibmvtpm->rtce_size, DMA_BIDIRECTIONAL); 132f76294744244 Ashley Lai 2012-08-22 @366 kfree(ibmvtpm->rtce_buf); 132f76294744244 Ashley Lai 2012-08-22 367 } 132f76294744244 Ashley Lai 2012-08-22 368 132f76294744244 Ashley Lai 2012-08-22 369 kfree(ibmvtpm); 31574d321c70f6d Hon Ching \(Vicky\ Lo 2017-03-15 370) /* For tpm_ibmvtpm_get_desired_dma */ 31574d321c70f6d Hon Ching \(Vicky\ Lo 2017-03-15 371) dev_set_drvdata(&vdev->dev, NULL); 132f76294744244 Ashley Lai 2012-08-22 372 } 132f76294744244 Ashley Lai 2012-08-22 373 :::::: The code at line 366 was first introduced by commit :::::: 132f7629474424418a5cdd666796ad3cfa4dc0c5 drivers/char/tpm: Add new device driver to support IBM vTPM :::::: TO: Ashley Lai <adlai(a)linux.vnet.ibm.com&gt; :::::: CC: Kent Yoder <key(a)linux.vnet.ibm.com&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org