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From: kernel test robot <lkp@intel.com>
To: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Cc: kbuild-all@lists.01.org, clang-built-linux@googlegroups.com,
	Linux Memory Management List <linux-mm@kvack.org>,
	Mark Brown <broonie@kernel.org>
Subject: [linux-next:master 8945/11253] sound/soc/codecs/wcd938x.c:3734:34: warning: unused variable 'wcd938x_dt_match'
Date: Mon, 21 Jun 2021 21:09:38 +0800	[thread overview]
Message-ID: <202106212130.DjPZjImU-lkp@intel.com> (raw)

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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   e71e3a48a7e89fa71fb70bf4602367528864d2ff
commit: 04544222886881cb0865040dcdf747fe7e025947 [8945/11253] ASoC: codecs: wcd938x: add audio routing and Kconfig
config: s390-randconfig-r015-20210621 (attached as .config)
compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project e1adf90826a57b674eee79b071fb46c1f5683cd0)
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 s390 cross compiling tool for clang build
        # apt-get install binutils-s390x-linux-gnu
        # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=04544222886881cb0865040dcdf747fe7e025947
        git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
        git fetch --no-tags linux-next master
        git checkout 04544222886881cb0865040dcdf747fe7e025947
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=s390 

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

All warnings (new ones prefixed by >>):

   In file included from sound/soc/codecs/wcd938x.c:12:
   In file included from include/sound/soc.h:20:
   In file included from include/linux/regmap.h:20:
   In file included from include/linux/iopoll.h:14:
   In file included from include/linux/io.h:13:
   In file included from arch/s390/include/asm/io.h:75:
   include/asm-generic/io.h:464:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
           val = __raw_readb(PCI_IOBASE + addr);
                             ~~~~~~~~~~ ^
   include/asm-generic/io.h:477:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
           val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
                                                           ~~~~~~~~~~ ^
   include/uapi/linux/byteorder/big_endian.h:36:59: note: expanded from macro '__le16_to_cpu'
   #define __le16_to_cpu(x) __swab16((__force __u16)(__le16)(x))
                                                             ^
   include/uapi/linux/swab.h:102:54: note: expanded from macro '__swab16'
   #define __swab16(x) (__u16)__builtin_bswap16((__u16)(x))
                                                        ^
   In file included from sound/soc/codecs/wcd938x.c:12:
   In file included from include/sound/soc.h:20:
   In file included from include/linux/regmap.h:20:
   In file included from include/linux/iopoll.h:14:
   In file included from include/linux/io.h:13:
   In file included from arch/s390/include/asm/io.h:75:
   include/asm-generic/io.h:490:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
           val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
                                                           ~~~~~~~~~~ ^
   include/uapi/linux/byteorder/big_endian.h:34:59: note: expanded from macro '__le32_to_cpu'
   #define __le32_to_cpu(x) __swab32((__force __u32)(__le32)(x))
                                                             ^
   include/uapi/linux/swab.h:115:54: note: expanded from macro '__swab32'
   #define __swab32(x) (__u32)__builtin_bswap32((__u32)(x))
                                                        ^
   In file included from sound/soc/codecs/wcd938x.c:12:
   In file included from include/sound/soc.h:20:
   In file included from include/linux/regmap.h:20:
   In file included from include/linux/iopoll.h:14:
   In file included from include/linux/io.h:13:
   In file included from arch/s390/include/asm/io.h:75:
   include/asm-generic/io.h:501:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
           __raw_writeb(value, PCI_IOBASE + addr);
                               ~~~~~~~~~~ ^
   include/asm-generic/io.h:511:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
           __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
                                                         ~~~~~~~~~~ ^
   include/asm-generic/io.h:521:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
           __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
                                                         ~~~~~~~~~~ ^
   include/asm-generic/io.h:609:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
           readsb(PCI_IOBASE + addr, buffer, count);
                  ~~~~~~~~~~ ^
   include/asm-generic/io.h:617:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
           readsw(PCI_IOBASE + addr, buffer, count);
                  ~~~~~~~~~~ ^
   include/asm-generic/io.h:625:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
           readsl(PCI_IOBASE + addr, buffer, count);
                  ~~~~~~~~~~ ^
   include/asm-generic/io.h:634:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
           writesb(PCI_IOBASE + addr, buffer, count);
                   ~~~~~~~~~~ ^
   include/asm-generic/io.h:643:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
           writesw(PCI_IOBASE + addr, buffer, count);
                   ~~~~~~~~~~ ^
   include/asm-generic/io.h:652:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
           writesl(PCI_IOBASE + addr, buffer, count);
                   ~~~~~~~~~~ ^
>> sound/soc/codecs/wcd938x.c:3734:34: warning: unused variable 'wcd938x_dt_match' [-Wunused-const-variable]
   static const struct of_device_id wcd938x_dt_match[] = {
                                    ^
   13 warnings generated.


vim +/wcd938x_dt_match +3734 sound/soc/codecs/wcd938x.c

8d78602aa87a38 Srinivas Kandagatla 2021-06-09  3733  
8d78602aa87a38 Srinivas Kandagatla 2021-06-09 @3734  static const struct of_device_id wcd938x_dt_match[] = {
8d78602aa87a38 Srinivas Kandagatla 2021-06-09  3735  	{ .compatible = "qcom,wcd9380-codec" },
8d78602aa87a38 Srinivas Kandagatla 2021-06-09  3736  	{ .compatible = "qcom,wcd9385-codec" },
8d78602aa87a38 Srinivas Kandagatla 2021-06-09  3737  	{}
8d78602aa87a38 Srinivas Kandagatla 2021-06-09  3738  };
8d78602aa87a38 Srinivas Kandagatla 2021-06-09  3739  MODULE_DEVICE_TABLE(of, wcd938x_dt_match);
8d78602aa87a38 Srinivas Kandagatla 2021-06-09  3740  

:::::: The code at line 3734 was first introduced by commit
:::::: 8d78602aa87a3805902bed83157526fdc5b837d4 ASoC: codecs: wcd938x: add basic driver

:::::: TO: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
:::::: CC: Mark Brown <broonie@kernel.org>

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

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                 reply	other threads:[~2021-06-21 13:11 UTC|newest]

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