[linux-next:master 5823/6789] drivers/gpu/drm/radeon/radeon_bios.c:614:12: warning: 'radeon_acpi_vfct_match' defined but not used

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   b8809969e1d7a591e0f49dd464a5d04b3cf02ab1
commit: 33a18ecd2fbf6bcbf803836e94eb31c26f4c7f41 [5823/6789] drm/radeon: Fix VFCT bus number matching with soft filter
config: openrisc-allmodconfig (https://download.01.org/0day-ci/archive/20260718/[email protected]/config)
compiler: or1k-linux-gcc (GCC) 16.1.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260718/[email protected]/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 <[email protected]>
| Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/

All warnings (new ones prefixed by >>):

>> drivers/gpu/drm/radeon/radeon_bios.c:614:12: warning: 'radeon_acpi_vfct_match' defined but not used [-Wunused-function]
     614 | static int radeon_acpi_vfct_match(struct radeon_device *rdev,
         |            ^~~~~~~~~~~~~~~~~~~~~~


vim +/radeon_acpi_vfct_match +614 drivers/gpu/drm/radeon/radeon_bios.c

   598	
   599	/**
   600	 * radeon_acpi_vfct_match() - Check if a VFCT entry matches the device
   601	 * @rdev: Radeon device
   602	 * @vhdr: VFCT image header to check
   603	 *
   604	 * VFCT entries contain the PCI bus number as recorded during BIOS POST.
   605	 * On systems where the kernel renumbers PCI buses (e.g. pci=realloc or
   606	 * resource conflicts), the runtime bus number may differ from the POST
   607	 * value.  Match by device identity (vendor + device + function) and use
   608	 * the bus number as a preference: exact bus match is preferred, but when
   609	 * the bus numbers disagree we accept the entry if the device identity
   610	 * matches.
   611	 *
   612	 * Returns: 0 on match, -ENODEV on no match
   613	 */
 > 614	static int radeon_acpi_vfct_match(struct radeon_device *rdev,
   615					  VFCT_IMAGE_HEADER *vhdr)
   616	{
   617		/* Vendor and device IDs must always match */
   618		if (vhdr->VendorID != rdev->pdev->vendor ||
   619		    vhdr->DeviceID != rdev->pdev->device)
   620			return -ENODEV;
   621	
   622		if (vhdr->PCIDevice != PCI_SLOT(rdev->pdev->devfn) ||
   623		    vhdr->PCIFunction != PCI_FUNC(rdev->pdev->devfn))
   624			return -ENODEV;
   625	
   626		/* Exact bus number match - preferred */
   627		if (vhdr->PCIBus == rdev->pdev->bus->number)
   628			return 0;
   629	
   630		/* Bus mismatch but device identity matches (PCI renumbering case) */
   631		dev_notice(&rdev->pdev->dev,
   632			   "VFCT bus number mismatch: table %u != runtime %u, matching by device identity (vendor 0x%04x device 0x%04x)\n",
   633			   vhdr->PCIBus, rdev->pdev->bus->number,
   634			   rdev->pdev->vendor, rdev->pdev->device);
   635		return 0;
   636	}
   637	

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