[linux-next:master 10163/11653] sound/soc/rockchip/rockchip_i2s_tdm.c:1315:34: warning: unused variable 'rockchip_i2s_tdm_match'

[kernel test robot <lkp@intel.com>]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   f9a6bea131849702d591d18d5c8b8a0eda6f62b3
commit: 9958d85968ed2df4b704105fd2a9c3669eb9cd97 [10163/11653] ASoC: Use device_get_match_data()
config: hexagon-randconfig-r002-20211203 (https://download.01.org/0day-ci/archive/20231013/202310131310.Em4Ucd4e-lkp@intel.com/config)
compiler: clang version 16.0.4 (https://github.com/llvm/llvm-project.git ae42196bc493ffe877a7e3dff8be32035dea4d07)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231013/202310131310.Em4Ucd4e-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202310131310.Em4Ucd4e-lkp@intel.com/

All warnings (new ones prefixed by >>):

   In file included from sound/soc/rockchip/rockchip_i2s_tdm.c:15:
   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/hexagon/include/asm/io.h:337:
   include/asm-generic/io.h:547:31: 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:560:61: 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/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
                                                     ^
   In file included from sound/soc/rockchip/rockchip_i2s_tdm.c:15:
   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/hexagon/include/asm/io.h:337:
   include/asm-generic/io.h:573:61: 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/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
                                                     ^
   In file included from sound/soc/rockchip/rockchip_i2s_tdm.c:15:
   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/hexagon/include/asm/io.h:337:
   include/asm-generic/io.h:584:33: 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:594:59: 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:604:59: 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);
                                                         ~~~~~~~~~~ ^
>> sound/soc/rockchip/rockchip_i2s_tdm.c:1315:34: warning: unused variable 'rockchip_i2s_tdm_match' [-Wunused-const-variable]
   static const struct of_device_id rockchip_i2s_tdm_match[] = {
                                    ^
   7 warnings generated.


vim +/rockchip_i2s_tdm_match +1315 sound/soc/rockchip/rockchip_i2s_tdm.c

081068fd641403 Nicolas Frattaroli 2021-10-01  1314  
081068fd641403 Nicolas Frattaroli 2021-10-01 @1315  static const struct of_device_id rockchip_i2s_tdm_match[] = {
081068fd641403 Nicolas Frattaroli 2021-10-01  1316  	{ .compatible = "rockchip,px30-i2s-tdm", .data = &px30_i2s_soc_data },
081068fd641403 Nicolas Frattaroli 2021-10-01  1317  	{ .compatible = "rockchip,rk1808-i2s-tdm", .data = &rk1808_i2s_soc_data },
081068fd641403 Nicolas Frattaroli 2021-10-01  1318  	{ .compatible = "rockchip,rk3308-i2s-tdm", .data = &rk3308_i2s_soc_data },
081068fd641403 Nicolas Frattaroli 2021-10-01  1319  	{ .compatible = "rockchip,rk3568-i2s-tdm", .data = &rk3568_i2s_soc_data },
c619bd4268ff98 Nicolas Frattaroli 2022-10-25  1320  	{ .compatible = "rockchip,rk3588-i2s-tdm" },
081068fd641403 Nicolas Frattaroli 2021-10-01  1321  	{ .compatible = "rockchip,rv1126-i2s-tdm", .data = &rv1126_i2s_soc_data },
081068fd641403 Nicolas Frattaroli 2021-10-01  1322  	{},
081068fd641403 Nicolas Frattaroli 2021-10-01  1323  };
081068fd641403 Nicolas Frattaroli 2021-10-01  1324  

:::::: The code at line 1315 was first introduced by commit
:::::: 081068fd641403994f0505e6b91e021d3925f348 ASoC: rockchip: add support for i2s-tdm controller

:::::: TO: Nicolas Frattaroli <frattaroli.nicolas@gmail.com>
:::::: CC: Mark Brown <broonie@kernel.org>

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