Hi Andy, 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: x86_64-randconfig-m001 (https://download.01.org/0day-ci/archive/20230311/202303112149.xD47qKOY-lkp@xxxxxxxxx/config) compiler: gcc-11 (Debian 11.3.0-8) 11.3.0 If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Reported-by: Dan Carpenter <error27@xxxxxxxxx> | Link: https://lore.kernel.org/r/202303112149.xD47qKOY-lkp@xxxxxxxxx/ smatch warnings: drivers/pnp/quirks.c:248 quirk_system_pci_resources() warn: was && intended here instead of ||? vim +248 drivers/pnp/quirks.c 0509ad5e1a7d92 Bjorn Helgaas 2008-03-11 229 static void quirk_system_pci_resources(struct pnp_dev *dev) 0509ad5e1a7d92 Bjorn Helgaas 2008-03-11 230 { 0509ad5e1a7d92 Bjorn Helgaas 2008-03-11 231 struct pci_dev *pdev = NULL; 059b4a086017fb Mika Westerberg 2023-03-10 232 struct resource *res, *r; 0509ad5e1a7d92 Bjorn Helgaas 2008-03-11 233 int i, j; 0509ad5e1a7d92 Bjorn Helgaas 2008-03-11 234 0509ad5e1a7d92 Bjorn Helgaas 2008-03-11 235 /* 0509ad5e1a7d92 Bjorn Helgaas 2008-03-11 236 * Some BIOSes have PNP motherboard devices with resources that 0509ad5e1a7d92 Bjorn Helgaas 2008-03-11 237 * partially overlap PCI BARs. The PNP system driver claims these 0509ad5e1a7d92 Bjorn Helgaas 2008-03-11 238 * motherboard resources, which prevents the normal PCI driver from 0509ad5e1a7d92 Bjorn Helgaas 2008-03-11 239 * requesting them later. 0509ad5e1a7d92 Bjorn Helgaas 2008-03-11 240 * 0509ad5e1a7d92 Bjorn Helgaas 2008-03-11 241 * This patch disables the PNP resources that conflict with PCI BARs 0509ad5e1a7d92 Bjorn Helgaas 2008-03-11 242 * so they won't be claimed by the PNP system driver. 0509ad5e1a7d92 Bjorn Helgaas 2008-03-11 243 */ 0509ad5e1a7d92 Bjorn Helgaas 2008-03-11 244 for_each_pci_dev(pdev) { 059b4a086017fb Mika Westerberg 2023-03-10 245 pci_dev_for_each_resource(pdev, r, i) { 059b4a086017fb Mika Westerberg 2023-03-10 246 unsigned long type = resource_type(r); 999ed65ad12e37 Rene Herman 2008-07-25 247 059b4a086017fb Mika Westerberg 2023-03-10 @248 if (type != IORESOURCE_IO || type != IORESOURCE_MEM || ^^ This || needs to be &&. This loop will always hit the continue path without doing anything. 059b4a086017fb Mika Westerberg 2023-03-10 249 resource_size(r) == 0) 0509ad5e1a7d92 Bjorn Helgaas 2008-03-11 250 continue; 0509ad5e1a7d92 Bjorn Helgaas 2008-03-11 251 059b4a086017fb Mika Westerberg 2023-03-10 252 if (r->flags & IORESOURCE_UNSET) f7834c092c4299 Bjorn Helgaas 2015-03-03 253 continue; f7834c092c4299 Bjorn Helgaas 2015-03-03 254 95ab3669f78306 Bjorn Helgaas 2008-04-28 255 for (j = 0; 999ed65ad12e37 Rene Herman 2008-07-25 256 (res = pnp_get_resource(dev, type, j)); j++) { aee3ad815dd291 Bjorn Helgaas 2008-06-27 257 if (res->start == 0 && res->end == 0) 0509ad5e1a7d92 Bjorn Helgaas 2008-03-11 258 continue; 0509ad5e1a7d92 Bjorn Helgaas 2008-03-11 259 0509ad5e1a7d92 Bjorn Helgaas 2008-03-11 260 /* 0509ad5e1a7d92 Bjorn Helgaas 2008-03-11 261 * If the PNP region doesn't overlap the PCI 0509ad5e1a7d92 Bjorn Helgaas 2008-03-11 262 * region at all, there's no problem. 0509ad5e1a7d92 Bjorn Helgaas 2008-03-11 263 */ 059b4a086017fb Mika Westerberg 2023-03-10 264 if (!resource_overlaps(res, r)) 0509ad5e1a7d92 Bjorn Helgaas 2008-03-11 265 continue; 0509ad5e1a7d92 Bjorn Helgaas 2008-03-11 266 0509ad5e1a7d92 Bjorn Helgaas 2008-03-11 267 /* 0509ad5e1a7d92 Bjorn Helgaas 2008-03-11 268 * If the PNP region completely encloses (or is 0509ad5e1a7d92 Bjorn Helgaas 2008-03-11 269 * at least as large as) the PCI region, that's 0509ad5e1a7d92 Bjorn Helgaas 2008-03-11 270 * also OK. For example, this happens when the 0509ad5e1a7d92 Bjorn Helgaas 2008-03-11 271 * PNP device describes a bridge with PCI 0509ad5e1a7d92 Bjorn Helgaas 2008-03-11 272 * behind it. 0509ad5e1a7d92 Bjorn Helgaas 2008-03-11 273 */ 059b4a086017fb Mika Westerberg 2023-03-10 274 if (res->start <= r->start && res->end >= r->end) 0509ad5e1a7d92 Bjorn Helgaas 2008-03-11 275 continue; 0509ad5e1a7d92 Bjorn Helgaas 2008-03-11 276 0509ad5e1a7d92 Bjorn Helgaas 2008-03-11 277 /* 0509ad5e1a7d92 Bjorn Helgaas 2008-03-11 278 * Otherwise, the PNP region overlaps *part* of 0509ad5e1a7d92 Bjorn Helgaas 2008-03-11 279 * the PCI region, and that might prevent a PCI 0509ad5e1a7d92 Bjorn Helgaas 2008-03-11 280 * driver from requesting its resources. 0509ad5e1a7d92 Bjorn Helgaas 2008-03-11 281 */ c7dabef8a2c59e Bjorn Helgaas 2009-10-27 282 dev_warn(&dev->dev, 059b4a086017fb Mika Westerberg 2023-03-10 283 "disabling %pR because it overlaps %s BAR %d %pR\n", 059b4a086017fb Mika Westerberg 2023-03-10 284 res, pci_name(pdev), i, r); 4b34fe156455d2 Bjorn Helgaas 2008-06-02 285 res->flags |= IORESOURCE_DISABLED; 0509ad5e1a7d92 Bjorn Helgaas 2008-03-11 286 } 0509ad5e1a7d92 Bjorn Helgaas 2008-03-11 287 } 0509ad5e1a7d92 Bjorn Helgaas 2008-03-11 288 } 0509ad5e1a7d92 Bjorn Helgaas 2008-03-11 289 } -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests
