linux-kernel - drivers/pci/controller/pci-ftpci100.c:37:9: warning: 'PCI

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Date:   Sun, 7 Feb 2021 20:22:57 +0800
From:   kernel test robot <lkp@...el.com>
To:     Jiaxun Yang <jiaxun.yang@...goat.com>
Cc:     kbuild-all@...ts.01.org, clang-built-linux@...glegroups.com,
        linux-kernel@...r.kernel.org,
        Thomas Bogendoerfer <tsbogend@...ha.franken.de>
Subject: drivers/pci/controller/pci-ftpci100.c:37:9: warning: 'PCI_IOSIZE'
 macro redefined

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   61556703b610a104de324e4f061dc6cf7b218b46
commit: 482cd90cd781c9b5607ed9c9f8641dc95a9d4cce MIPS: Loongson64: Define PCI_IOBASE
date:   9 months ago
config: mips-randconfig-r032-20210207 (attached as .config)
compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project c9439ca36342fb6013187d0a69aef92736951476)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # install mips cross compiling tool for clang build
        # apt-get install binutils-mips-linux-gnu
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=482cd90cd781c9b5607ed9c9f8641dc95a9d4cce
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 482cd90cd781c9b5607ed9c9f8641dc95a9d4cce
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=mips 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>

All warnings (new ones prefixed by >>):

>> drivers/pci/controller/pci-ftpci100.c:37:9: warning: 'PCI_IOSIZE' macro redefined [-Wmacro-redefined]
   #define PCI_IOSIZE      0x00
           ^
   arch/mips/include/asm/mach-loongson64/spaces.h:11:9: note: previous definition is here
   #define PCI_IOSIZE      SZ_16M
           ^
   1 warning generated.
   Assembler messages:
   Fatal error: invalid -march= option: `mips64r2'
   clang-12: error: assembler command failed with exit code 1 (use -v to see invocation)


vim +/PCI_IOSIZE +37 drivers/pci/controller/pci-ftpci100.c

9e2aee80c78d50 drivers/pci/host/pci-ftpci100.c Rob Herring   2018-05-11  32  
d3c68e0a7e34af drivers/pci/host/pci-ftpci100.c Linus Walleij 2017-03-12  33  /*
d3c68e0a7e34af drivers/pci/host/pci-ftpci100.c Linus Walleij 2017-03-12  34   * Special configuration registers directly in the first few words
d3c68e0a7e34af drivers/pci/host/pci-ftpci100.c Linus Walleij 2017-03-12  35   * in I/O space.
d3c68e0a7e34af drivers/pci/host/pci-ftpci100.c Linus Walleij 2017-03-12  36   */
d3c68e0a7e34af drivers/pci/host/pci-ftpci100.c Linus Walleij 2017-03-12 @37  #define PCI_IOSIZE	0x00
d3c68e0a7e34af drivers/pci/host/pci-ftpci100.c Linus Walleij 2017-03-12  38  #define PCI_PROT	0x04 /* AHB protection */
d3c68e0a7e34af drivers/pci/host/pci-ftpci100.c Linus Walleij 2017-03-12  39  #define PCI_CTRL	0x08 /* PCI control signal */
d3c68e0a7e34af drivers/pci/host/pci-ftpci100.c Linus Walleij 2017-03-12  40  #define PCI_SOFTRST	0x10 /* Soft reset counter and response error enable */
d3c68e0a7e34af drivers/pci/host/pci-ftpci100.c Linus Walleij 2017-03-12  41  #define PCI_CONFIG	0x28 /* PCI configuration command register */
d3c68e0a7e34af drivers/pci/host/pci-ftpci100.c Linus Walleij 2017-03-12  42  #define PCI_DATA	0x2C
d3c68e0a7e34af drivers/pci/host/pci-ftpci100.c Linus Walleij 2017-03-12  43  

:::::: The code at line 37 was first introduced by commit
:::::: d3c68e0a7e34af2b86f5408c4d6e794a38bbd9e1 PCI: faraday: Add Faraday Technology FTPCI100 PCI Host Bridge driver

:::::: TO: Linus Walleij <linus.walleij@...aro.org>
:::::: CC: Bjorn Helgaas <bhelgaas@...gle.com>

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

Download attachment ".config.gz" of type "application/gzip" (27657 bytes)