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X-CSE-ConnectionGUID: n1NgR5lCRLeMgLCxrst0aw== X-CSE-MsgGUID: JTM8ZwJWTpqUnedUMnlo7g== X-IronPort-AV: E=McAfee;i="6800,10657,11899"; a="89292662" X-IronPort-AV: E=Sophos;i="6.25,268,1779174000"; d="scan'208";a="89292662" Received: from orviesa008.jf.intel.com ([10.64.159.148]) by orvoesa109.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 08 Sep 2026 03:41:37 -0700 X-CSE-ConnectionGUID: Cn4i2TNtSGiFr8qAHvdhVQ== X-CSE-MsgGUID: 0Ze/sG3wQDqoJxVvvBbL4g== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.25,268,1779174000"; d="scan'208";a="270468783" Received: from igk-lkp-server01.igk.intel.com (HELO cc074f2a4298) ([10.211.93.152]) by orviesa008.jf.intel.com with ESMTP; 08 Sep 2026 03:41:34 -0700 Received: from kbuild by cc074f2a4298 with local (Exim 4.98.2) (envelope-from ) id 1x3tGd-000000000f4-2tBu; Tue, 08 Sep 2026 10:41:31 +0000 Date: Tue, 8 Sep 2026 12:40:32 +0200 From: kernel test robot To: Alex Elder , bhelgaas@google.com, robh@kernel.org, saravanak@kernel.org Cc: oe-kbuild-all@lists.linux.dev, herve.codina@bootlin.com, daniel@riscstar.com, mohd.anwar@oss.qualcomm.com, lorenzo.bianconi@oss.qualcomm.com, linux-pci@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v4 4/4] PCI: of: introduce of_pci_verify_node() Message-ID: <202609081256.UUzbm16V-lkp@intel.com> References: <20260904134607.1856121-5-elder@riscstar.com> Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260904134607.1856121-5-elder@riscstar.com> Hi Alex, kernel test robot noticed the following build warnings: [auto build test WARNING on cee9395acd8043be0644b25c34bfa86623f2b935] url: https://github.com/intel-lab-lkp/linux/commits/Alex-Elder/PCI-of-avoid-allocations-in-of_pci_prop_compatible/20260904-084603 base: cee9395acd8043be0644b25c34bfa86623f2b935 patch link: https://lore.kernel.org/r/20260904134607.1856121-5-elder%40riscstar.com patch subject: [PATCH v4 4/4] PCI: of: introduce of_pci_verify_node() config: loongarch-allyesconfig (https://download.01.org/0day-ci/archive/20260908/202609081256.UUzbm16V-lkp@intel.com/config) compiler: clang version 22.1.8 (https://github.com/llvm/llvm-project ca7933e47d3a3451d81e72ac174dcb5aa28b59d1) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260908/202609081256.UUzbm16V-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 | Closes: https://lore.kernel.org/oe-kbuild-all/202609081256.UUzbm16V-lkp@intel.com/ All warnings (new ones prefixed by >>): drivers/pci/of_property.c:335:7: error: incompatible pointer to integer conversion initializing 'char' with an expression of type 'char[48]' [-Wint-conversion] 335 | char bufp = buf; | ^ ~~~ drivers/pci/of_property.c:338:17: error: incompatible integer to pointer conversion passing 'char' to parameter of type 'char *'; take the address with & [-Wint-conversion] 338 | ret = snprintf(bufp, PROP_SIZE, "pci%x,%x", pdev->vendor, pdev->device); | ^~~~ | & include/linux/sprintf.h:13:35: note: passing argument to parameter 'buf' here 13 | __printf(3, 4) int snprintf(char *buf, size_t size, const char *fmt, ...); | ^ drivers/pci/of_property.c:341:41: error: incompatible integer to pointer conversion assigning to 'const char *' from 'char'; take the address with & [-Wint-conversion] 341 | compat_strs[PROP_COMPAT_PCI_VVVV_DDDD] = bufp; | ^ ~~~~ | & drivers/pci/of_property.c:344:17: error: incompatible integer to pointer conversion passing 'char' to parameter of type 'char *'; take the address with & [-Wint-conversion] 344 | ret = snprintf(bufp, PROP_SIZE, "pciclass,%06x", pdev->class); | ^~~~ | & include/linux/sprintf.h:13:35: note: passing argument to parameter 'buf' here 13 | __printf(3, 4) int snprintf(char *buf, size_t size, const char *fmt, ...); | ^ drivers/pci/of_property.c:347:43: error: incompatible integer to pointer conversion assigning to 'const char *' from 'char'; take the address with & [-Wint-conversion] 347 | compat_strs[PROP_COMPAT_PCICLASS_CCSSPP] = bufp; | ^ ~~~~ | & drivers/pci/of_property.c:350:17: error: incompatible integer to pointer conversion passing 'char' to parameter of type 'char *'; take the address with & [-Wint-conversion] 350 | ret = snprintf(bufp, PROP_SIZE, "pciclass,%04x", pdev->class >> 8); | ^~~~ | & include/linux/sprintf.h:13:35: note: passing argument to parameter 'buf' here 13 | __printf(3, 4) int snprintf(char *buf, size_t size, const char *fmt, ...); | ^ drivers/pci/of_property.c:351:41: error: incompatible integer to pointer conversion assigning to 'const char *' from 'char'; take the address with & [-Wint-conversion] 351 | compat_strs[PROP_COMPAT_PCICLASS_CCSS] = bufp; | ^ ~~~~ | & >> drivers/pci/of_property.c:336:6: warning: unused variable 'i' [-Wunused-variable] 336 | int i, ret; | ^ 1 warning and 7 errors generated. vim +/i +336 drivers/pci/of_property.c 407d1a51921e9f Lizhi Hou 2023-08-15 326 5a35f85c8e450f Alex Elder 2026-09-04 327 /* The three compatible property strings have max sizes 12+1, 15+1, and 13+1 */ 5a35f85c8e450f Alex Elder 2026-09-04 328 #define PROP_SIZE 16 /* Max size of each compatible string */ 407d1a51921e9f Lizhi Hou 2023-08-15 329 static int of_pci_prop_compatible(struct pci_dev *pdev, 407d1a51921e9f Lizhi Hou 2023-08-15 330 struct of_changeset *ocs, 407d1a51921e9f Lizhi Hou 2023-08-15 331 struct device_node *np) 407d1a51921e9f Lizhi Hou 2023-08-15 332 { 407d1a51921e9f Lizhi Hou 2023-08-15 333 const char *compat_strs[PROP_COMPAT_NUM] = { 0 }; 5a35f85c8e450f Alex Elder 2026-09-04 334 char buf[PROP_COMPAT_NUM * PROP_SIZE] = { }; 5a35f85c8e450f Alex Elder 2026-09-04 335 char bufp = buf; 407d1a51921e9f Lizhi Hou 2023-08-15 @336 int i, ret; 407d1a51921e9f Lizhi Hou 2023-08-15 337 5a35f85c8e450f Alex Elder 2026-09-04 338 ret = snprintf(bufp, PROP_SIZE, "pci%x,%x", pdev->vendor, pdev->device); 5a35f85c8e450f Alex Elder 2026-09-04 339 if (ret >= PROP_SIZE) 5a35f85c8e450f Alex Elder 2026-09-04 340 return -EINVAL; 5a35f85c8e450f Alex Elder 2026-09-04 341 compat_strs[PROP_COMPAT_PCI_VVVV_DDDD] = bufp; 5a35f85c8e450f Alex Elder 2026-09-04 342 bufp += ret + 1; 407d1a51921e9f Lizhi Hou 2023-08-15 343 5a35f85c8e450f Alex Elder 2026-09-04 344 ret = snprintf(bufp, PROP_SIZE, "pciclass,%06x", pdev->class); 5a35f85c8e450f Alex Elder 2026-09-04 345 if (ret >= PROP_SIZE) 5a35f85c8e450f Alex Elder 2026-09-04 346 return -EINVAL; 5a35f85c8e450f Alex Elder 2026-09-04 347 compat_strs[PROP_COMPAT_PCICLASS_CCSSPP] = bufp; 5a35f85c8e450f Alex Elder 2026-09-04 348 bufp += ret + 1; 407d1a51921e9f Lizhi Hou 2023-08-15 349 5a35f85c8e450f Alex Elder 2026-09-04 350 ret = snprintf(bufp, PROP_SIZE, "pciclass,%04x", pdev->class >> 8); 5a35f85c8e450f Alex Elder 2026-09-04 351 compat_strs[PROP_COMPAT_PCICLASS_CCSS] = bufp; 5a35f85c8e450f Alex Elder 2026-09-04 352 5a35f85c8e450f Alex Elder 2026-09-04 353 return of_changeset_add_prop_string_array(ocs, np, "compatible", 5a35f85c8e450f Alex Elder 2026-09-04 354 compat_strs, PROP_COMPAT_NUM); 407d1a51921e9f Lizhi Hou 2023-08-15 355 } 5a35f85c8e450f Alex Elder 2026-09-04 356 #undef PROP_SIZE 407d1a51921e9f Lizhi Hou 2023-08-15 357 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki