Re: [PATCH v4 1/4] PCI: Introduce pci_dev_for_each_resource()

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

Hi Andy,

I love your patch! Yet something to improve:

[auto build test ERROR on pci/next]
[also build test ERROR on pci/for-linus powerpc/next powerpc/fixes linus/master v6.3-rc1 next-20230310]
[cannot apply to soc/for-next]
[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/Andy-Shevchenko/PCI-Introduce-pci_dev_for_each_resource/20230311-011642
base:   https://git.kernel.org/pub/scm/linux/kernel/git/pci/pci.git next
patch link:    https://lore.kernel.org/r/20230310171416.23356-2-andriy.shevchenko%40linux.intel.com
patch subject: [PATCH v4 1/4] PCI: Introduce pci_dev_for_each_resource()
config: m68k-allyesconfig (https://download.01.org/0day-ci/archive/20230311/202303110550.BLo6P5dS-lkp@intel.com/config)
compiler: m68k-linux-gcc (GCC) 12.1.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://github.com/intel-lab-lkp/linux/commit/059b4a086017fbf2baacdbe0cc454f569f618ffd
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Andy-Shevchenko/PCI-Introduce-pci_dev_for_each_resource/20230311-011642
        git checkout 059b4a086017fbf2baacdbe0cc454f569f618ffd
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=m68k olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=m68k SHELL=/bin/bash drivers/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202303110550.BLo6P5dS-lkp@intel.com/

All errors (new ones prefixed by >>):

   drivers/pnp/quirks.c: In function 'quirk_system_pci_resources':
>> drivers/pnp/quirks.c:245:17: error: implicit declaration of function 'pci_dev_for_each_resource' [-Werror=implicit-function-declaration]
     245 |                 pci_dev_for_each_resource(pdev, r, i) {
         |                 ^~~~~~~~~~~~~~~~~~~~~~~~~
>> drivers/pnp/quirks.c:245:54: error: expected ';' before '{' token
     245 |                 pci_dev_for_each_resource(pdev, r, i) {
         |                                                      ^~
         |                                                      ;
   drivers/pnp/quirks.c:233:16: warning: unused variable 'j' [-Wunused-variable]
     233 |         int i, j;
         |                ^
   drivers/pnp/quirks.c:232:26: warning: unused variable 'res' [-Wunused-variable]
     232 |         struct resource *res, *r;
         |                          ^~~
   cc1: some warnings being treated as errors


vim +/pci_dev_for_each_resource +245 drivers/pnp/quirks.c

   228	
   229	static void quirk_system_pci_resources(struct pnp_dev *dev)
   230	{
   231		struct pci_dev *pdev = NULL;
   232		struct resource *res, *r;
   233		int i, j;
   234	
   235		/*
   236		 * Some BIOSes have PNP motherboard devices with resources that
   237		 * partially overlap PCI BARs.  The PNP system driver claims these
   238		 * motherboard resources, which prevents the normal PCI driver from
   239		 * requesting them later.
   240		 *
   241		 * This patch disables the PNP resources that conflict with PCI BARs
   242		 * so they won't be claimed by the PNP system driver.
   243		 */
   244		for_each_pci_dev(pdev) {
 > 245			pci_dev_for_each_resource(pdev, r, i) {
   246				unsigned long type = resource_type(r);
   247	
   248				if (type != IORESOURCE_IO || type != IORESOURCE_MEM ||
   249				    resource_size(r) == 0)
   250					continue;
   251	
   252				if (r->flags & IORESOURCE_UNSET)
   253					continue;
   254	
   255				for (j = 0;
   256				     (res = pnp_get_resource(dev, type, j)); j++) {
   257					if (res->start == 0 && res->end == 0)
   258						continue;
   259	
   260					/*
   261					 * If the PNP region doesn't overlap the PCI
   262					 * region at all, there's no problem.
   263					 */
   264					if (!resource_overlaps(res, r))
   265						continue;
   266	
   267					/*
   268					 * If the PNP region completely encloses (or is
   269					 * at least as large as) the PCI region, that's
   270					 * also OK.  For example, this happens when the
   271					 * PNP device describes a bridge with PCI
   272					 * behind it.
   273					 */
   274					if (res->start <= r->start && res->end >= r->end)
   275						continue;
   276	
   277					/*
   278					 * Otherwise, the PNP region overlaps *part* of
   279					 * the PCI region, and that might prevent a PCI
   280					 * driver from requesting its resources.
   281					 */
   282					dev_warn(&dev->dev,
   283						 "disabling %pR because it overlaps %s BAR %d %pR\n",
   284						 res, pci_name(pdev), i, r);
   285					res->flags |= IORESOURCE_DISABLED;
   286				}
   287			}
   288		}
   289	}
   290	

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