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 1F65EC6FA82 for ; Thu, 22 Sep 2022 10:45:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230400AbiIVKpZ (ORCPT ); Thu, 22 Sep 2022 06:45:25 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45388 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230073AbiIVKpX (ORCPT ); Thu, 22 Sep 2022 06:45:23 -0400 Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 608229FAAD for ; Thu, 22 Sep 2022 03:45:22 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1663843522; x=1695379522; h=date:from:to:cc:subject:message-id:mime-version; bh=YdI1++uiLxC2Xj4VEP5Hzyp0zap97SrA0gDwOG9MvDg=; b=YxxV8nufMlfY5URE3r0+9Kznci3l4qBI0OxnHnZcGwRXBfL9PJ1QKfsf EXWigoEf3UN2gm1UiT/cizfD6/S9tLLWOyUx8rdfM8tI7PbzgHMGSYRkJ wikeGVtoCBJ6qihFe5RGskBM6epLr3pTrl0mHq+ekgYmFEATHI88FsdIZ 8aCvcog6SriqqecTo/Mdq1fORZHgpCoZUAVRUkqo95H9UOO73EkriCbeR mTeT4d48HTPB+QrfNWOkxd0FJLPyakMAZIFWj5w7Ok6HAdEUxHksD2Wju eN02XfL/XDTFd8GxWAbkbJNW3uE/l7iR59zwGYx4uTMJ9pBXYU0Fu1j28 g==; X-IronPort-AV: E=McAfee;i="6500,9779,10477"; a="326582740" X-IronPort-AV: E=Sophos;i="5.93,335,1654585200"; d="scan'208";a="326582740" Received: from orsmga008.jf.intel.com ([10.7.209.65]) by fmsmga101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 22 Sep 2022 03:45:21 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.93,335,1654585200"; d="scan'208";a="650473544" Received: from lkp-server01.sh.intel.com (HELO c0a60f19fe7e) ([10.239.97.150]) by orsmga008.jf.intel.com with ESMTP; 22 Sep 2022 03:45:20 -0700 Received: from kbuild by c0a60f19fe7e with local (Exim 4.96) (envelope-from ) id 1obJho-0004c4-0X; Thu, 22 Sep 2022 10:45:20 +0000 Date: Thu, 22 Sep 2022 18:44:56 +0800 From: kernel test robot To: Stafford Horne Cc: kbuild-all@lists.01.org, 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: <202209221805.jXylfGcI-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: dc164f4fb00a0abebdfff132f8bc7291a28f5401 commit: ded2ee36313c941f1a12b6f85cde295b575264ae openrisc: Add pci bus support date: 8 weeks ago config: openrisc-randconfig-m031-20220921 (https://download.01.org/0day-ci/archive/20220922/202209221805.jXylfGcI-lkp@intel.com/config) compiler: or1k-linux-gcc (GCC) 12.1.0 If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot smatch warnings: drivers/pci/pci.c:4195 pci_pio_to_address() warn: always true condition '(pio >= (0 - 0)) => (0-u32max >= 0)' 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://01.org/lkp