[mingo-tip:master 2185/2335] arch/x86/pci/bus_numa.c:24:5: warning: no previous prototype for 'x86_pci_root_bus_node'

[mingo-tip:master 2185/2335] arch/x86/pci/bus_numa.c:24:5: warning: no previous prototype for 'x86_pci_root_bus_node'

[kernel test robot]

tree:   git://git.kernel.org/pub/scm/linux/kernel/git/mingo/tip.git master
head:   85293bf3fca6d85608cff1447ce3097583f15fab
commit: c599df5b2e31219f6a937ab3cfb2d5d9a6fda0b2 [2185/2335] headers/deps: pci: Optimize <linux/pci.h> dependencies, remove <linux/topology.h> inclusion
config: i386-randconfig-a001-20220314 (https://download.01.org/0day-ci/archive/20220322/202203220527.DRupyyYd-lkp@intel.com/config)
compiler: gcc-9 (Ubuntu 9.4.0-1ubuntu1~20.04) 9.4.0
reproduce (this is a W=1 build):
        # https://git.kernel.org/pub/scm/linux/kernel/git/mingo/tip.git/commit/?id=c599df5b2e31219f6a937ab3cfb2d5d9a6fda0b2
        git remote add mingo-tip git://git.kernel.org/pub/scm/linux/kernel/git/mingo/tip.git
        git fetch --no-tags mingo-tip master
        git checkout c599df5b2e31219f6a937ab3cfb2d5d9a6fda0b2
        # save the config file to linux build tree
        mkdir build_dir
        make W=1 O=build_dir ARCH=i386 SHELL=/bin/bash

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

All warnings (new ones prefixed by >>):

>> arch/x86/pci/bus_numa.c:24:5: warning: no previous prototype for 'x86_pci_root_bus_node' [-Wmissing-prototypes]
      24 | int x86_pci_root_bus_node(int bus)
         |     ^~~~~~~~~~~~~~~~~~~~~
>> arch/x86/pci/bus_numa.c:34:6: warning: no previous prototype for 'x86_pci_root_bus_resources' [-Wmissing-prototypes]
      34 | void x86_pci_root_bus_resources(int bus, struct list_head *resources)
         |      ^~~~~~~~~~~~~~~~~~~~~~~~~~


vim +/x86_pci_root_bus_node +24 arch/x86/pci/bus_numa.c

67f241f4579651 Yinghai Lu    2009-11-11  23  
afcf21c2beca66 Bjorn Helgaas 2014-01-24 @24  int x86_pci_root_bus_node(int bus)
afcf21c2beca66 Bjorn Helgaas 2014-01-24  25  {
afcf21c2beca66 Bjorn Helgaas 2014-01-24  26  	struct pci_root_info *info = x86_find_pci_root_info(bus);
afcf21c2beca66 Bjorn Helgaas 2014-01-24  27  
afcf21c2beca66 Bjorn Helgaas 2014-01-24  28  	if (!info)
afcf21c2beca66 Bjorn Helgaas 2014-01-24  29  		return NUMA_NO_NODE;
afcf21c2beca66 Bjorn Helgaas 2014-01-24  30  
afcf21c2beca66 Bjorn Helgaas 2014-01-24  31  	return info->node;
afcf21c2beca66 Bjorn Helgaas 2014-01-24  32  }
afcf21c2beca66 Bjorn Helgaas 2014-01-24  33  
d28e5ac2a07e27 Yinghai Lu    2012-04-02 @34  void x86_pci_root_bus_resources(int bus, struct list_head *resources)
d28e5ac2a07e27 Yinghai Lu    2012-04-02  35  {
d28e5ac2a07e27 Yinghai Lu    2012-04-02  36  	struct pci_root_info *info = x86_find_pci_root_info(bus);
d28e5ac2a07e27 Yinghai Lu    2012-04-02  37  	struct pci_root_res *root_res;
14d76b68f2819a Jiang Liu     2015-02-05  38  	struct resource_entry *window;
a10bb128b64fe0 Yinghai Lu    2012-05-17  39  	bool found = false;
d28e5ac2a07e27 Yinghai Lu    2012-04-02  40  
d28e5ac2a07e27 Yinghai Lu    2012-04-02  41  	if (!info)
2cd6975a4ff92a Bjorn Helgaas 2011-10-28  42  		goto default_resources;
67f241f4579651 Yinghai Lu    2009-11-11  43  
2cd6975a4ff92a Bjorn Helgaas 2011-10-28  44  	printk(KERN_DEBUG "PCI: root bus %02x: hardware-probed resources\n",
2cd6975a4ff92a Bjorn Helgaas 2011-10-28  45  	       bus);
67f241f4579651 Yinghai Lu    2009-11-11  46  
a10bb128b64fe0 Yinghai Lu    2012-05-17  47  	/* already added by acpi ? */
14d76b68f2819a Jiang Liu     2015-02-05  48  	resource_list_for_each_entry(window, resources)
a10bb128b64fe0 Yinghai Lu    2012-05-17  49  		if (window->res->flags & IORESOURCE_BUS) {
a10bb128b64fe0 Yinghai Lu    2012-05-17  50  			found = true;
a10bb128b64fe0 Yinghai Lu    2012-05-17  51  			break;
a10bb128b64fe0 Yinghai Lu    2012-05-17  52  		}
a10bb128b64fe0 Yinghai Lu    2012-05-17  53  
a10bb128b64fe0 Yinghai Lu    2012-05-17  54  	if (!found)
a10bb128b64fe0 Yinghai Lu    2012-05-17  55  		pci_add_resource(resources, &info->busn);
a10bb128b64fe0 Yinghai Lu    2012-05-17  56  
727ae8be30b428 Liu Jiang     2015-11-27  57  	list_for_each_entry(root_res, &info->resources, list)
727ae8be30b428 Liu Jiang     2015-11-27  58  		pci_add_resource(resources, &root_res->res);
727ae8be30b428 Liu Jiang     2015-11-27  59  
2cd6975a4ff92a Bjorn Helgaas 2011-10-28  60  	return;
2cd6975a4ff92a Bjorn Helgaas 2011-10-28  61  
2cd6975a4ff92a Bjorn Helgaas 2011-10-28  62  default_resources:
2cd6975a4ff92a Bjorn Helgaas 2011-10-28  63  	/*
2cd6975a4ff92a Bjorn Helgaas 2011-10-28  64  	 * We don't have any host bridge aperture information from the
2cd6975a4ff92a Bjorn Helgaas 2011-10-28  65  	 * "native host bridge drivers," e.g., amd_bus or broadcom_bus,
2cd6975a4ff92a Bjorn Helgaas 2011-10-28  66  	 * so fall back to the defaults historically used by pci_create_bus().
2cd6975a4ff92a Bjorn Helgaas 2011-10-28  67  	 */
2cd6975a4ff92a Bjorn Helgaas 2011-10-28  68  	printk(KERN_DEBUG "PCI: root bus %02x: using default resources\n", bus);
2cd6975a4ff92a Bjorn Helgaas 2011-10-28  69  	pci_add_resource(resources, &ioport_resource);
2cd6975a4ff92a Bjorn Helgaas 2011-10-28  70  	pci_add_resource(resources, &iomem_resource);
67f241f4579651 Yinghai Lu    2009-11-11  71  }
67f241f4579651 Yinghai Lu    2009-11-11  72  

:::::: The code at line 24 was first introduced by commit
:::::: afcf21c2beca6604dbdc24fed1624c2499a85e7d x86/PCI: Add x86_pci_root_bus_node() to look up NUMA node from PCI bus

:::::: TO: Bjorn Helgaas <bhelgaas@google.com>
:::::: CC: Bjorn Helgaas <bhelgaas@google.com>

-- 
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