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 471B3C77B7F for ; Sun, 14 May 2023 04:29:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231190AbjENE30 (ORCPT ); Sun, 14 May 2023 00:29:26 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55474 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229462AbjENE3Y (ORCPT ); Sun, 14 May 2023 00:29:24 -0400 Received: from mga18.intel.com (mga18.intel.com [134.134.136.126]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CC48E1BCF for ; Sat, 13 May 2023 21:29:22 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1684038562; x=1715574562; h=date:from:to:cc:subject:message-id:mime-version; bh=1jyo1/+VMGYuqKKg0yEqQ7o13C0Q5YZcJ9AZTxxQcIE=; b=QJ00QxblYOa2G950iLW3tQNI4jxevtGGTVMrI08LMY3LZHYW4gMn9tc2 weIglnr+7PsGfRw8Ln/Fh6cswNVIjlUKXVqAykT6WGFNNJYFhgFQ8tmXo vrWXl1VkF994LsgkOZRGikagLhs30nu3tGhi4s3hcmDWRRQ2dbojLDQbm VHUpTE0Yz6499jc6Yxk633uEOZsS5HUW+gb8JsyCBBE2LJYVJJK5kaq3I GlUVY/H3WLPvbWqBHWFTqd8QPcCgIEz3UY0nSNgVd16RY2VxppRhXwOL1 5XyjRQmHGB8Zl8x5C0dRQcH9ro8wiK0R9JO1Gaegv8xxfkjpJp8eXTCq2 w==; X-IronPort-AV: E=McAfee;i="6600,9927,10709"; a="335537083" X-IronPort-AV: E=Sophos;i="5.99,273,1677571200"; d="scan'208";a="335537083" Received: from orsmga007.jf.intel.com ([10.7.209.58]) by orsmga106.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 13 May 2023 21:29:22 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10709"; a="694656730" X-IronPort-AV: E=Sophos;i="5.99,273,1677571200"; d="scan'208";a="694656730" Received: from lkp-server01.sh.intel.com (HELO dea6d5a4f140) ([10.239.97.150]) by orsmga007.jf.intel.com with ESMTP; 13 May 2023 21:29:21 -0700 Received: from kbuild by dea6d5a4f140 with local (Exim 4.96) (envelope-from ) id 1py3MG-0005pA-16; Sun, 14 May 2023 04:29:20 +0000 Date: Sun, 14 May 2023 12:28:23 +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: <202305141227.mVZGYR0O-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 tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: bb7c241fae6228e89c0286ffd6f249b3b0dea225 commit: ded2ee36313c941f1a12b6f85cde295b575264ae openrisc: Add pci bus support date: 10 months ago config: openrisc-randconfig-m031-20230509 (https://download.01.org/0day-ci/archive/20230514/202305141227.mVZGYR0O-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 | Link: https://lore.kernel.org/oe-kbuild-all/202305141227.mVZGYR0O-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/infiniband/hw/mthca/mthca_memfree.c:720 mthca_init_db_tab() warn: other places set '(struct mthca_db_table)->npages' to 'page' instead of 'array_size' 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