linux-kernel - arch/um/drivers/virt-pci.c:537:21: warning: no previous declaration for 'pcibios_get_phb_of

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Date:   Wed, 23 Aug 2023 09:47:51 +0800
From:   kernel test robot <lkp@...el.com>
To:     Vincent Whitchurch <vincent.whitchurch@...s.com>
Cc:     oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org,
        Richard Weinberger <richard@....at>
Subject: arch/um/drivers/virt-pci.c:537:21: warning: no previous declaration
 for 'pcibios_get_phb_of_node'

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   89bf6209cad66214d3774dac86b6bbf2aec6a30d
commit: 314a1408b79a844dafdcde867d90de5d509409b7 um: virt-pci: implement pcibios_get_phb_of_node()
date:   6 months ago
config: um-randconfig-r064-20230823 (https://download.01.org/0day-ci/archive/20230823/202308230949.PphIIlhq-lkp@intel.com/config)
compiler: gcc-7 (Ubuntu 7.5.0-6ubuntu2) 7.5.0
reproduce: (https://download.01.org/0day-ci/archive/20230823/202308230949.PphIIlhq-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@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202308230949.PphIIlhq-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> arch/um/drivers/virt-pci.c:537:21: warning: no previous declaration for 'pcibios_get_phb_of_node' [-Wmissing-declarations]
    struct device_node *pcibios_get_phb_of_node(struct pci_bus *bus)
                        ^~~~~~~~~~~~~~~~~~~~~~~

Kconfig warnings: (for reference only)
   WARNING: unmet direct dependencies detected for FRAMEBUFFER_CONSOLE
   Depends on [n]: VT [=n] && FB [=y] && !UML [=y]
   Selected by [y]:
   - DRM_FBDEV_EMULATION [=y] && HAS_IOMEM [=y] && DRM_KMS_HELPER [=y] && (FB [=y]=y || FB [=y]=DRM_KMS_HELPER [=y]) && !EXPERT [=n]
   WARNING: unmet direct dependencies detected for FRAMEBUFFER_CONSOLE_DETECT_PRIMARY
   Depends on [n]: VT [=n] && FRAMEBUFFER_CONSOLE [=y]
   Selected by [y]:
   - DRM_FBDEV_EMULATION [=y] && HAS_IOMEM [=y] && DRM_KMS_HELPER [=y] && (FB [=y]=y || FB [=y]=DRM_KMS_HELPER [=y]) && FRAMEBUFFER_CONSOLE [=y]


vim +/pcibios_get_phb_of_node +537 arch/um/drivers/virt-pci.c

   535	
   536	/* Copied from arch/x86/kernel/devicetree.c */
 > 537	struct device_node *pcibios_get_phb_of_node(struct pci_bus *bus)
   538	{
   539		struct device_node *np;
   540	
   541		for_each_node_by_type(np, "pci") {
   542			const void *prop;
   543			unsigned int bus_min;
   544	
   545			prop = of_get_property(np, "bus-range", NULL);
   546			if (!prop)
   547				continue;
   548			bus_min = be32_to_cpup(prop);
   549			if (bus->number == bus_min)
   550				return np;
   551		}
   552		return NULL;
   553	}
   554	

-- 
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https://github.com/intel/lkp-tests/wiki