tree:   https://github.com/l1k/linux doe
head:   1cfd89319d6406a03332e11c97dc1947e3e5e38f
commit: 0464df9d1dccac6ccfd50516f3fdedefc486698a [1/6] PCI/DOE: Provide synchronous API
config: x86_64-randconfig-a011
compiler: gcc-11 (Debian 11.3.0-8) 11.3.0
reproduce (this is a W=1 build):
        # https://github.com/l1k/linux/commit/0464df9d1dccac6ccfd50516f3fdedefc486698a
        git remote add l1k https://github.com/l1k/linux
        git fetch --no-tags l1k doe
        git checkout 0464df9d1dccac6ccfd50516f3fdedefc486698a
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

   drivers/pci/doe.c: In function 'pci_doe_discovery':
>> drivers/pci/doe.c:366:14: error: implicit declaration of function 'pci_doe_exchange'; did you mean 'd_exchange'? [-Werror=implicit-function-declaration]
     366 |         rc = pci_doe_exchange(doe_mb, PCI_VENDOR_ID_PCI_SIG,
         |              ^~~~~~~~~~~~~~~~
         |              d_exchange
   cc1: some warnings being treated as errors
--
   drivers/cxl/core/pci.c: In function 'cxl_cdat_get_length':
>> drivers/cxl/core/pci.c:501:14: error: implicit declaration of function 'pci_doe_exchange'; did you mean 'd_exchange'? [-Werror=implicit-function-declaration]
     501 |         rc = pci_doe_exchange(cdat_doe, PCI_DVSEC_VENDOR_ID_CXL,
         |              ^~~~~~~~~~~~~~~~
         |              d_exchange
   cc1: some warnings being treated as errors


vim +366 drivers/pci/doe.c

   357	
   358	static int pci_doe_discovery(struct pci_doe_mb *doe_mb, u8 *index, u16 *vid,
   359				     u8 *protocol)
   360	{
   361		u32 request_pl = FIELD_PREP(PCI_DOE_DATA_OBJECT_DISC_REQ_3_INDEX,
   362					    *index);
   363		u32 response_pl;
   364		int rc;
   365	
 > 366		rc = pci_doe_exchange(doe_mb, PCI_VENDOR_ID_PCI_SIG,
   367				      PCI_DOE_PROTOCOL_DISCOVERY,
   368				      &request_pl, sizeof(request_pl),
   369				      &response_pl, sizeof(response_pl));
   370		if (rc < 0)
   371			return rc;
   372	
   373		if (rc != sizeof(response_pl))
   374			return -EIO;
   375	
   376		*vid = FIELD_GET(PCI_DOE_DATA_OBJECT_DISC_RSP_3_VID, response_pl);
   377		*protocol = FIELD_GET(PCI_DOE_DATA_OBJECT_DISC_RSP_3_PROTOCOL,
   378				      response_pl);
   379		*index = FIELD_GET(PCI_DOE_DATA_OBJECT_DISC_RSP_3_NEXT_INDEX,
   380				   response_pl);
   381	
   382		return 0;
   383	}
   384	

-- 
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