[PATCH 2/3] perf/dwc_pcie: Load DesignWare PCIe PMU driver automatically on Ampere SoCs

[kernel test robot]

Hi Ilkka,

kernel test robot noticed the following build warnings:

[auto build test WARNING on linus/master]
[also build test WARNING on v6.12-rc2 next-20241009]
[cannot apply to arm-perf/for-next/perf]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Ilkka-Koskinen/perf-dwc_pcie-Add-support-for-Ampere-SoCs/20241009-072027
base:   linus/master
patch link:    https://lore.kernel.org/r/20241008231824.5102-3-ilkka%40os.amperecomputing.com
patch subject: [PATCH 2/3] perf/dwc_pcie: Load DesignWare PCIe PMU driver automatically on Ampere SoCs
config: arm-randconfig-002-20241010 (https://download.01.org/0day-ci/archive/20241010/202410100514.xcrIAa1r-lkp@intel.com/config)
compiler: clang version 20.0.0git (https://github.com/llvm/llvm-project 70e0a7e7e6a8541bcc46908c592eed561850e416)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241010/202410100514.xcrIAa1r-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 at intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202410100514.xcrIAa1r-lkp@intel.com/

All warnings (new ones prefixed by >>):

   In file included from drivers/perf/dwc_pcie_pmu.c:16:
   In file included from include/linux/perf_event.h:18:
   In file included from include/uapi/linux/bpf_perf_event.h:11:
   In file included from ./arch/arm/include/generated/uapi/asm/bpf_perf_event.h:1:
   In file included from include/uapi/asm-generic/bpf_perf_event.h:4:
   In file included from include/linux/ptrace.h:10:
   In file included from include/linux/pid_namespace.h:7:
   In file included from include/linux/mm.h:2213:
   include/linux/vmstat.h:518:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion]
     518 |         return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_"
         |                               ~~~~~~~~~~~ ^ ~~~
>> drivers/perf/dwc_pcie_pmu.c:785:35: warning: unused variable 'dwc_pcie_pmu_table' [-Wunused-const-variable]
     785 | static const struct pci_device_id dwc_pcie_pmu_table[] = {
         |                                   ^~~~~~~~~~~~~~~~~~
   2 warnings generated.


vim +/dwc_pcie_pmu_table +785 drivers/perf/dwc_pcie_pmu.c

   784	
 > 785	static const struct pci_device_id dwc_pcie_pmu_table[] = {
   786		{
   787			PCI_DEVICE(PCI_VENDOR_ID_AMPERE, PCI_ANY_ID),
   788			.class		= PCI_CLASS_BRIDGE_PCI_NORMAL,
   789			.class_mask	= ~0,
   790		},
   791		{ }
   792	};
   793	MODULE_DEVICE_TABLE(pci, dwc_pcie_pmu_table);
   794	

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