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d="scan'208";a="285590578" Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by orsmga103.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 Jul 2022 15:20:20 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.92,259,1650956400"; d="scan'208";a="683998854" Received: from lkp-server01.sh.intel.com (HELO 68b931ab7ac1) ([10.239.97.150]) by FMSMGA003.fm.intel.com with ESMTP; 09 Jul 2022 15:20:18 -0700 Received: from kbuild by 68b931ab7ac1 with local (Exim 4.95) (envelope-from ) id 1oAIoD-000PBk-PW; Sat, 09 Jul 2022 22:20:17 +0000 Date: Sun, 10 Jul 2022 06:19:51 +0800 From: kernel test robot To: Aswath Govindraju Cc: llvm@lists.linux.dev, kbuild-all@lists.01.org, linux-kernel@vger.kernel.org, Vinod Koul Subject: drivers/mux/mmio.c:76:20: error: variable has incomplete type 'struct reg_field' Message-ID: <202207100655.34zyCrJO-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 Hi Aswath, First bad commit (maybe != root cause): tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: b1c428b6c3684ee8ddf4137d68b3e8d51d2a700f commit: e4d4371253029528c02bfb43a46c252e1c3d035f phy: phy-can-transceiver: Add support for setting mux date: 3 months ago config: s390-randconfig-r031-20220710 (https://download.01.org/0day-ci/archive/20220710/202207100655.34zyCrJO-lkp@intel.com/config) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 77a38f6839980bfac61babb40d83772c51427011) 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/torvalds/linux.git/commit/?id=e4d4371253029528c02bfb43a46c252e1c3d035f git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout e4d4371253029528c02bfb43a46c252e1c3d035f # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=s390 SHELL=/bin/bash drivers/mux/ If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot All errors (new ones prefixed by >>): In file included from drivers/mux/mmio.c:16: 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:37:59: 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 drivers/mux/mmio.c:16: 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:35:59: 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 drivers/mux/mmio.c:16: 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); ~~~~~~~~~~ ^ >> drivers/mux/mmio.c:76:20: error: variable has incomplete type 'struct reg_field' struct reg_field field; ^ drivers/mux/mmio.c:76:10: note: forward declaration of 'struct reg_field' struct reg_field field; ^ >> drivers/mux/mmio.c:102:15: error: call to undeclared function 'devm_regmap_field_alloc'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] fields[i] = devm_regmap_field_alloc(dev, regmap, field); ^ 12 warnings and 2 errors generated. vim +76 drivers/mux/mmio.c 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 35 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 36 static int mux_mmio_probe(struct platform_device *pdev) 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 37 { 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 38 struct device *dev = &pdev->dev; 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 39 struct device_node *np = dev->of_node; 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 40 struct regmap_field **fields; 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 41 struct mux_chip *mux_chip; 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 42 struct regmap *regmap; 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 43 int num_fields; 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 44 int ret; 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 45 int i; 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 46 8ecfaca7926f4b drivers/mux/mmio.c Pankaj Bansal 2019-06-12 47 if (of_device_is_compatible(np, "mmio-mux")) 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 48 regmap = syscon_node_to_regmap(np->parent); 8ecfaca7926f4b drivers/mux/mmio.c Pankaj Bansal 2019-06-12 49 else 8ecfaca7926f4b drivers/mux/mmio.c Pankaj Bansal 2019-06-12 50 regmap = dev_get_regmap(dev->parent, NULL) ?: ERR_PTR(-ENODEV); 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 51 if (IS_ERR(regmap)) { 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 52 ret = PTR_ERR(regmap); 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 53 dev_err(dev, "failed to get regmap: %d\n", ret); 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 54 return ret; 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 55 } 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 56 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 57 ret = of_property_count_u32_elems(np, "mux-reg-masks"); 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 58 if (ret == 0 || ret % 2) 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 59 ret = -EINVAL; 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 60 if (ret < 0) { 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 61 dev_err(dev, "mux-reg-masks property missing or invalid: %d\n", 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 62 ret); 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 63 return ret; 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 64 } 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 65 num_fields = ret / 2; 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 66 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 67 mux_chip = devm_mux_chip_alloc(dev, num_fields, num_fields * 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 68 sizeof(*fields)); 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 69 if (IS_ERR(mux_chip)) 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 70 return PTR_ERR(mux_chip); 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 71 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 72 fields = mux_chip_priv(mux_chip); 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 73 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 74 for (i = 0; i < num_fields; i++) { 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 75 struct mux_control *mux = &mux_chip->mux[i]; 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 @76 struct reg_field field; 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 77 s32 idle_state = MUX_IDLE_AS_IS; 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 78 u32 reg, mask; 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 79 int bits; 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 80 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 81 ret = of_property_read_u32_index(np, "mux-reg-masks", 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 82 2 * i, ®); 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 83 if (!ret) 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 84 ret = of_property_read_u32_index(np, "mux-reg-masks", 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 85 2 * i + 1, &mask); 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 86 if (ret < 0) { 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 87 dev_err(dev, "bitfield %d: failed to read mux-reg-masks property: %d\n", 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 88 i, ret); 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 89 return ret; 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 90 } 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 91 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 92 field.reg = reg; 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 93 field.msb = fls(mask) - 1; 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 94 field.lsb = ffs(mask) - 1; 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 95 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 96 if (mask != GENMASK(field.msb, field.lsb)) { 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 97 dev_err(dev, "bitfield %d: invalid mask 0x%x\n", 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 98 i, mask); 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 99 return -EINVAL; 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 100 } 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 101 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 @102 fields[i] = devm_regmap_field_alloc(dev, regmap, field); 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 103 if (IS_ERR(fields[i])) { 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 104 ret = PTR_ERR(fields[i]); 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 105 dev_err(dev, "bitfield %d: failed allocate: %d\n", 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 106 i, ret); 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 107 return ret; 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 108 } 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 109 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 110 bits = 1 + field.msb - field.lsb; 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 111 mux->states = 1 << bits; 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 112 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 113 of_property_read_u32_index(np, "idle-states", i, 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 114 (u32 *)&idle_state); 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 115 if (idle_state != MUX_IDLE_AS_IS) { 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 116 if (idle_state < 0 || idle_state >= mux->states) { 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 117 dev_err(dev, "bitfield: %d: out of range idle state %d\n", 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 118 i, idle_state); 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 119 return -EINVAL; 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 120 } 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 121 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 122 mux->idle_state = idle_state; 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 123 } 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 124 } 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 125 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 126 mux_chip->ops = &mux_mmio_ops; 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 127 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 128 return devm_mux_chip_register(dev, mux_chip); 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 129 } 73726380a26fa1 drivers/mux/mux-mmio.c Philipp Zabel 2017-05-14 130 :::::: The code at line 76 was first introduced by commit :::::: 73726380a26fa1ed490f30fccee10ed9da28dc0c mux: mmio-based syscon mux controller :::::: TO: Philipp Zabel :::::: CC: Greg Kroah-Hartman -- 0-DAY CI Kernel Test Service https://01.org/lkp