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X-IronPort-AV: E=McAfee;i="6600,9927,10862"; a="451654075" X-IronPort-AV: E=Sophos;i="6.03,222,1694761200"; d="scan'208";a="451654075" Received: from orsmga003.jf.intel.com ([10.7.209.27]) by orsmga105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 13 Oct 2023 06:40:19 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10862"; a="704655727" X-IronPort-AV: E=Sophos;i="6.03,222,1694761200"; d="scan'208";a="704655727" Received: from lkp-server02.sh.intel.com (HELO f64821696465) ([10.239.97.151]) by orsmga003.jf.intel.com with ESMTP; 13 Oct 2023 06:40:17 -0700 Received: from kbuild by f64821696465 with local (Exim 4.96) (envelope-from ) id 1qrIOl-0004pB-2S; Fri, 13 Oct 2023 13:40:15 +0000 Date: Fri, 13 Oct 2023 21:40:06 +0800 From: kernel test robot To: Rob Herring Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev, Linux Memory Management List , Xu Yilun Subject: [linux-next:master 11413/12130] drivers/fpga/altera-ps-spi.c:74:34: warning: unused variable 'of_ef_match' Message-ID: <202310132128.grw00tS2-lkp@intel.com> Precedence: bulk X-Mailing-List: llvm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: e3b18f7200f45d66f7141136c25554ac1e82009b commit: 97b15ccc1517033df349c32723651f31c9c1f264 [11413/12130] fpga: altera-ps-spi: Use spi_get_device_match_data() config: hexagon-randconfig-r011-20211004 (https://download.01.org/0day-ci/archive/20231013/202310132128.grw00tS2-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/20231013/202310132128.grw00tS2-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 | Closes: https://lore.kernel.org/oe-kbuild-all/202310132128.grw00tS2-lkp@intel.com/ All warnings (new ones prefixed by >>): In file included from drivers/fpga/altera-ps-spi.c:22: In file included from include/linux/spi/spi.h:17: In file included from include/linux/scatterlist.h:9: 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 drivers/fpga/altera-ps-spi.c:22: In file included from include/linux/spi/spi.h:17: In file included from include/linux/scatterlist.h:9: 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 drivers/fpga/altera-ps-spi.c:22: In file included from include/linux/spi/spi.h:17: In file included from include/linux/scatterlist.h:9: 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); ~~~~~~~~~~ ^ >> drivers/fpga/altera-ps-spi.c:74:34: warning: unused variable 'of_ef_match' [-Wunused-const-variable] static const struct of_device_id of_ef_match[] = { ^ 7 warnings generated. vim +/of_ef_match +74 drivers/fpga/altera-ps-spi.c 5692fae0742df7 Joshua Clayton 2017-06-14 73 5692fae0742df7 Joshua Clayton 2017-06-14 @74 static const struct of_device_id of_ef_match[] = { 5692fae0742df7 Joshua Clayton 2017-06-14 75 { .compatible = "altr,fpga-passive-serial", .data = &c5_data }, 5692fae0742df7 Joshua Clayton 2017-06-14 76 { .compatible = "altr,fpga-arria10-passive-serial", .data = &a10_data }, 5692fae0742df7 Joshua Clayton 2017-06-14 77 {} 5692fae0742df7 Joshua Clayton 2017-06-14 78 }; 5692fae0742df7 Joshua Clayton 2017-06-14 79 MODULE_DEVICE_TABLE(of, of_ef_match); 5692fae0742df7 Joshua Clayton 2017-06-14 80 :::::: The code at line 74 was first introduced by commit :::::: 5692fae0742df7587189174b1cba364d22846c85 fpga manager: Add altera-ps-spi driver for Altera FPGAs :::::: TO: Joshua Clayton :::::: CC: Greg Kroah-Hartman -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki