[jarkko-tpmdd:master 11/12] drivers/char/tpm/tpm_crb.c:464:34: sparse: sparse: cast removes address space '__iomem' of expression

[jarkko-tpmdd:master 11/12] drivers/char/tpm/tpm_crb.c:464:34: sparse: sparse: cast removes address space '__iomem' of expression

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd.git master
head:   7e8d0278a462f604dd884db39b76d0ac3c1ad652
commit: ed59034d94f5764452a57efb85bb2ae5c3061a5b [11/12] tpm_crb: Implement command and response chunking logic
config: i386-randconfig-2302-20261030 (https://download.01.org/0day-ci/archive/20261030/202610300657.PDvHNvHj-lkp@intel.com/config)
compiler: gcc-14 (Debian 14.2.0-19) 14.2.0
sparse: v0.6.5-rc1-21-g84ec0658
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20261030/202610300657.PDvHNvHj-lkp@intel.com/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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202610300657.PDvHNvHj-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
>> drivers/char/tpm/tpm_crb.c:464:34: sparse: sparse: cast removes address space '__iomem' of expression

vim +/__iomem +464 drivers/char/tpm/tpm_crb.c

   443	
   444	static int crb_recv(struct tpm_chip *chip, u8 *buf, size_t count)
   445	{
   446		struct crb_priv *priv = dev_get_drvdata(&chip->dev);
   447		unsigned int expected;
   448	
   449		/*
   450		 * A sanity check that the upper layer wants to get at least the header
   451		 * as that is the minimum size for any TPM response.
   452		 */
   453		if (count < TPM_HEADER_SIZE)
   454			return -EIO;
   455	
   456		/*
   457		 * If this bit is set, according to the spec, the TPM is in
   458		 * unrecoverable condition.
   459		 */
   460		if (ioread32(&priv->regs_t->ctrl_sts) & CRB_CTRL_STS_ERROR)
   461			return -EIO;
   462	
   463		/* Peek at the first 8 bytes to determine the response size */
 > 464		expected = be32_to_cpup((__be32 *)&priv->rsp[2]);
   465	
   466		if (expected <= priv->rsp_size)
   467			return tpm_crb_recv_no_chunks(chip, buf, count);
   468		if (!(priv->intf_id & CRB_INTF_CAP_CRB_CHUNK)) {
   469			dev_err(&chip->dev,
   470				"Response larger than MMIO and chunking not supported\n");
   471			return -EIO;
   472		}
   473		return tpm_crb_recv_chunks(chip, buf, count, expected);
   474	}
   475	

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