From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id BE0B4EB64D7 for ; Wed, 28 Jun 2023 13:23:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231481AbjF1NXr (ORCPT ); Wed, 28 Jun 2023 09:23:47 -0400 Received: from mga06b.intel.com ([134.134.136.31]:33595 "EHLO mga06.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230134AbjF1NXo (ORCPT ); Wed, 28 Jun 2023 09:23:44 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1687958624; x=1719494624; h=date:from:to:cc:subject:message-id:mime-version; bh=3J3i9Mi4rqkYfNoJICSEviM4+dNFFVGyypvGvUrWFTM=; b=Da3DROogmM5vmtlrv+WiJGS67QpTPUPXaV2dXjCgRYlxbv3uWYxhKAqJ t6DMirKu5P7e6ZLTao6umw12GdSBeNVHf/yrgR5kd6QtJnSlLTo6oocqZ NFdfacmC00K4O12qWmuWBKcN36lVT9FFf89GUJEb4LCYIMiz2I0M8NVrg W/x7i18MSIR8hYzXsd1R/TCTgPHaTl0v8D7o0GZUQw8OV03NS51ZLpaWz M3Yfx4JGDZGj3WeI3j6B2EXVECwjZCtZr7gTKpIbuzzW01aKwgElWfVkU tITDL/+b4TlrYphnqbwM1oPiC6vIYIEitMpIo3U8w8sgZDKacXDAXlVo+ A==; X-IronPort-AV: E=McAfee;i="6600,9927,10754"; a="425514492" X-IronPort-AV: E=Sophos;i="6.01,165,1684825200"; d="scan'208";a="425514492" Received: from orsmga003.jf.intel.com ([10.7.209.27]) by orsmga104.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 28 Jun 2023 06:23:43 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10754"; a="667119698" X-IronPort-AV: E=Sophos;i="6.01,165,1684825200"; d="scan'208";a="667119698" Received: from lkp-server01.sh.intel.com (HELO 783282924a45) ([10.239.97.150]) by orsmga003.jf.intel.com with ESMTP; 28 Jun 2023 06:23:42 -0700 Received: from kbuild by 783282924a45 with local (Exim 4.96) (envelope-from ) id 1qEV93-000DGv-0S; Wed, 28 Jun 2023 13:23:41 +0000 Date: Wed, 28 Jun 2023 21:23:20 +0800 From: kernel test robot To: Stafford Horne Cc: oe-kbuild-all@lists.linux.dev, linux-kernel@vger.kernel.org Subject: drivers/pci/pci.c:4195 pci_pio_to_address() warn: always true condition '(pio >= (0 - 0)) => (0-u32max >= 0)' Message-ID: <202306282106.NdF2Rooc-lkp@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Stafford, First bad commit (maybe != root cause): tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 6aeadf7896bff4ca230702daba8788455e6b866e commit: ded2ee36313c941f1a12b6f85cde295b575264ae openrisc: Add pci bus support date: 11 months ago config: openrisc-randconfig-m041-20230628 (https://download.01.org/0day-ci/archive/20230628/202306282106.NdF2Rooc-lkp@intel.com/config) compiler: or1k-linux-gcc (GCC) 12.3.0 reproduce: (https://download.01.org/0day-ci/archive/20230628/202306282106.NdF2Rooc-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/202306282106.NdF2Rooc-lkp@intel.com/ smatch warnings: drivers/pci/pci.c:4195 pci_pio_to_address() warn: always true condition '(pio >= (0 - 0)) => (0-u32max >= 0)' drivers/pcmcia/yenta_socket.c:1238 yenta_probe() warn: unsigned 'id->driver_data' is never less than zero. vim +4195 drivers/pci/pci.c c5076cfe768998 Tomasz Nowicki 2016-05-11 4189 c5076cfe768998 Tomasz Nowicki 2016-05-11 4190 phys_addr_t pci_pio_to_address(unsigned long pio) c5076cfe768998 Tomasz Nowicki 2016-05-11 4191 { c5076cfe768998 Tomasz Nowicki 2016-05-11 4192 phys_addr_t address = (phys_addr_t)OF_BAD_ADDR; c5076cfe768998 Tomasz Nowicki 2016-05-11 4193 c5076cfe768998 Tomasz Nowicki 2016-05-11 4194 #ifdef PCI_IOBASE 5745392e0c2b78 Zhichang Yuan 2018-03-15 @4195 if (pio >= MMIO_UPPER_LIMIT) c5076cfe768998 Tomasz Nowicki 2016-05-11 4196 return address; c5076cfe768998 Tomasz Nowicki 2016-05-11 4197 5745392e0c2b78 Zhichang Yuan 2018-03-15 4198 address = logic_pio_to_hwaddr(pio); c5076cfe768998 Tomasz Nowicki 2016-05-11 4199 #endif c5076cfe768998 Tomasz Nowicki 2016-05-11 4200 c5076cfe768998 Tomasz Nowicki 2016-05-11 4201 return address; c5076cfe768998 Tomasz Nowicki 2016-05-11 4202 } 9cc742078c9a90 Jianjun Wang 2021-04-20 4203 EXPORT_SYMBOL_GPL(pci_pio_to_address); c5076cfe768998 Tomasz Nowicki 2016-05-11 4204 :::::: The code at line 4195 was first introduced by commit :::::: 5745392e0c2b78e0d73203281d5c42cbd6993194 PCI: Apply the new generic I/O management on PCI IO hosts :::::: TO: Zhichang Yuan :::::: CC: Bjorn Helgaas -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki