Re: [PATCH 6/6 v7] ACPI: extlog: Trace CPER CXL Protocol Error Section

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

Hi Fabio,

kernel test robot noticed the following build errors:

[auto build test ERROR on c9cfc122f03711a5124b4aafab3211cf4d35a2ac]

url:    https://github.com/intel-lab-lkp/linux/commits/Fabio-M-De-Francesco/ACPI-extlog-Trace-CPER-Non-standard-Section-Body/20251105-022733
base:   c9cfc122f03711a5124b4aafab3211cf4d35a2ac
patch link:    https://lore.kernel.org/r/20251104182446.863422-7-fabio.m.de.francesco%40linux.intel.com
patch subject: [PATCH 6/6 v7] ACPI: extlog: Trace CPER CXL Protocol Error Section
config: x86_64-buildonly-randconfig-006-20251105 (https://download.01.org/0day-ci/archive/20251105/202511051610.Shh8WKBG-lkp@intel.com/config)
compiler: gcc-13 (Debian 13.3.0-16) 13.3.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251105/202511051610.Shh8WKBG-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/202511051610.Shh8WKBG-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from drivers/cxl/core/pci.c:10:
   drivers/cxl/cxlpci.h: In function 'cxl_pci_flit_256':
   drivers/cxl/cxlpci.h:126:9: error: implicit declaration of function 'pcie_capability_read_word' [-Werror=implicit-function-declaration]
     126 |         pcie_capability_read_word(pdev, PCI_EXP_LNKSTA2, &lnksta2);
         |         ^~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/cxl/core/pci.c: In function 'devm_cxl_port_enumerate_dports':
   drivers/cxl/core/pci.c:143:9: error: implicit declaration of function 'pci_walk_bus' [-Werror=implicit-function-declaration]
     143 |         pci_walk_bus(bus, match_add_dports, &ctx);
         |         ^~~~~~~~~~~~
   drivers/cxl/core/pci.c: In function 'cxl_pci_get_latency':
   drivers/cxl/core/pci.c:1059:14: error: implicit declaration of function 'pcie_link_speed_mbps'; did you mean 'pcie_get_speed_cap'? [-Werror=implicit-function-declaration]
    1059 |         bw = pcie_link_speed_mbps(pdev);
         |              ^~~~~~~~~~~~~~~~~~~~
         |              pcie_get_speed_cap
   drivers/cxl/core/pci.c: In function 'cxl_gpf_get_dvsec':
>> drivers/cxl/core/pci.c:1149:17: error: implicit declaration of function 'pci_find_dvsec_capability'; did you mean 'pci_find_ext_capability'? [-Werror=implicit-function-declaration]
    1149 |         dvsec = pci_find_dvsec_capability(pdev, PCI_VENDOR_ID_CXL,
         |                 ^~~~~~~~~~~~~~~~~~~~~~~~~
         |                 pci_find_ext_capability
   cc1: some warnings being treated as errors

Kconfig warnings: (for reference only)
   WARNING: unmet direct dependencies detected for PCIEAER
   Depends on [n]: PCI [=n] && PCIEPORTBUS [=n]
   Selected by [m]:
   - ACPI_EXTLOG [=m] && ACPI [=y] && X86_MCE [=y] && X86_LOCAL_APIC [=y]
   WARNING: unmet direct dependencies detected for CXL_BUS
   Depends on [n]: PCI [=n]
   Selected by [m]:
   - ACPI_EXTLOG [=m] && ACPI [=y] && X86_MCE [=y] && X86_LOCAL_APIC [=y]


vim +1149 drivers/cxl/core/pci.c

a52b6a2c1c997b Davidlohr Bueso 2025-01-24  1135  
36aace15d9bdcf Li Ming         2025-03-23  1136  u16 cxl_gpf_get_dvsec(struct device *dev)
021b7e42fa7bc2 Davidlohr Bueso 2025-02-20  1137  {
36aace15d9bdcf Li Ming         2025-03-23  1138  	struct pci_dev *pdev;
36aace15d9bdcf Li Ming         2025-03-23  1139  	bool is_port = true;
021b7e42fa7bc2 Davidlohr Bueso 2025-02-20  1140  	u16 dvsec;
021b7e42fa7bc2 Davidlohr Bueso 2025-02-20  1141  
021b7e42fa7bc2 Davidlohr Bueso 2025-02-20  1142  	if (!dev_is_pci(dev))
021b7e42fa7bc2 Davidlohr Bueso 2025-02-20  1143  		return 0;
021b7e42fa7bc2 Davidlohr Bueso 2025-02-20  1144  
36aace15d9bdcf Li Ming         2025-03-23  1145  	pdev = to_pci_dev(dev);
36aace15d9bdcf Li Ming         2025-03-23  1146  	if (pci_pcie_type(pdev) == PCI_EXP_TYPE_ENDPOINT)
36aace15d9bdcf Li Ming         2025-03-23  1147  		is_port = false;
36aace15d9bdcf Li Ming         2025-03-23  1148  
36aace15d9bdcf Li Ming         2025-03-23 @1149  	dvsec = pci_find_dvsec_capability(pdev, PCI_VENDOR_ID_CXL,
021b7e42fa7bc2 Davidlohr Bueso 2025-02-20  1150  			is_port ? CXL_DVSEC_PORT_GPF : CXL_DVSEC_DEVICE_GPF);
021b7e42fa7bc2 Davidlohr Bueso 2025-02-20  1151  	if (!dvsec)
021b7e42fa7bc2 Davidlohr Bueso 2025-02-20  1152  		dev_warn(dev, "%s GPF DVSEC not present\n",
021b7e42fa7bc2 Davidlohr Bueso 2025-02-20  1153  			 is_port ? "Port" : "Device");
021b7e42fa7bc2 Davidlohr Bueso 2025-02-20  1154  	return dvsec;
021b7e42fa7bc2 Davidlohr Bueso 2025-02-20  1155  }
021b7e42fa7bc2 Davidlohr Bueso 2025-02-20  1156  EXPORT_SYMBOL_NS_GPL(cxl_gpf_get_dvsec, "CXL");
021b7e42fa7bc2 Davidlohr Bueso 2025-02-20  1157  

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