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Date:   Sun, 14 Feb 2021 15:11:37 +0800
From:   kernel test robot <lkp@...el.com>
To:     Thomas Gleixner <tglx@...utronix.de>
Cc:     kbuild-all@...ts.01.org, clang-built-linux@...glegroups.com,
        linux-kernel@...r.kernel.org,
        Frederic Weisbecker <frederic@...nel.org>,
        Valentin Schneider <valentin.schneider@....com>
Subject: drivers/rtc/rtc-pcf8523.c:35:9: warning: 'REG_OFFSET' macro redefined

Hi Thomas,

FYI, the error/warning still remains.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   ac30d8ce28d61c05ac3a8b1452e889371136f3af
commit: 7fd70c65faacd39628ba5f670be6490010c8132f ARM: irqstat: Get rid of duplicated declaration
date:   3 months ago
config: arm-randconfig-r003-20210214 (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 arm cross compiling tool for clang build
        # apt-get install binutils-arm-linux-gnueabi
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7fd70c65faacd39628ba5f670be6490010c8132f
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 7fd70c65faacd39628ba5f670be6490010c8132f
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=arm 

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/rtc/rtc-pcf8523.c:35:9: warning: 'REG_OFFSET' macro redefined [-Wmacro-redefined]
   #define REG_OFFSET   0x0e
           ^
   arch/arm/mach-ixp4xx/include/mach/platform.h:23:9: note: previous definition is here
   #define REG_OFFSET      0
           ^
   1 warning generated.


vim +/REG_OFFSET +35 drivers/rtc/rtc-pcf8523.c

f803f0d079ded4 Thierry Reding 2012-12-17  34  
bc3bee02527252 Russell King   2017-09-29 @35  #define REG_OFFSET   0x0e
bc3bee02527252 Russell King   2017-09-29  36  #define REG_OFFSET_MODE BIT(7)
bc3bee02527252 Russell King   2017-09-29  37  

:::::: The code at line 35 was first introduced by commit
:::::: bc3bee0252725240ffa62180d387cc245179c549 rtc: pcf8523: add support for trimming the RTC oscillator

:::::: TO: Russell King <rmk+kernel@...linux.org.uk>
:::::: CC: Alexandre Belloni <alexandre.belloni@...e-electrons.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" (29726 bytes)

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