[android-common:android14-kiwi-6.1 7/7] drivers/mailbox/pcc.c:295:27: sparse: sparse: incorrect type in argument 1 (different base types)

[kernel test robot <lkp@intel.com>]

tree:   https://android.googlesource.com/kernel/common android14-kiwi-6.1
head:   d5b66ad86ec150afc5182b585139072bf0a60683
commit: 84c351bc07a99d470dd91696b991a30b39db01f0 [7/7] mailbox: pcc: Check before sending MCTP PCC response ACK
config: x86_64-randconfig-r112-20260324 (https://download.01.org/0day-ci/archive/20260328/202603281659.lBbVpJSa-lkp@intel.com/config)
compiler: gcc-14 (Debian 14.2.0-19) 14.2.0
sparse: v0.6.5-rc1
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260328/202603281659.lBbVpJSa-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/202603281659.lBbVpJSa-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
>> drivers/mailbox/pcc.c:295:27: sparse: sparse: incorrect type in argument 1 (different base types) @@     expected restricted __le32 const [usertype] *p @@     got unsigned int * @@
   drivers/mailbox/pcc.c:295:27: sparse:     expected restricted __le32 const [usertype] *p
   drivers/mailbox/pcc.c:295:27: sparse:     got unsigned int *

vim +295 drivers/mailbox/pcc.c

   271	
   272	static void check_and_ack(struct pcc_chan_info *pchan, struct mbox_chan *chan)
   273	{
   274		struct acpi_pcct_ext_pcc_shared_memory pcc_hdr;
   275	
   276		if (pchan->type != ACPI_PCCT_TYPE_EXT_PCC_SLAVE_SUBSPACE)
   277			return;
   278		/* If the memory region has not been mapped, we cannot
   279		 * determine if we need to send the message, but we still
   280		 * need to set the cmd_update flag before returning.
   281		 */
   282		if (pchan->chan.shmem == NULL) {
   283			pcc_chan_reg_read_modify_write(&pchan->cmd_update);
   284			return;
   285		}
   286		memcpy_fromio(&pcc_hdr, pchan->chan.shmem,
   287			      sizeof(struct acpi_pcct_ext_pcc_shared_memory));
   288		/*
   289		 * The PCC slave subspace channel needs to set the command complete bit
   290		 * after processing message. If the PCC_ACK_FLAG is set, it should also
   291		 * ring the doorbell.
   292		 *
   293		 * The PCC master subspace channel clears chan_in_use to free channel.
   294		 */
 > 295		if (le32_to_cpup(&pcc_hdr.flags) & PCC_ACK_FLAG_MASK)
   296			pcc_send_data(chan, NULL);
   297		else
   298			pcc_chan_reg_read_modify_write(&pchan->cmd_update);
   299	}
   300	

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