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Date: Thu, 16 Jun 2022 18:50:23 +0800
From: kernel test robot <lkp@...el.com>
To: Jiri Pirko <jiri@...dia.com>
Cc: llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
linux-kernel@...r.kernel.org
Subject: [jpirko-mlxsw:jiri_devel_lc_dev 2/15]
drivers/net/ethernet/mellanox/mlxsw/core_linecard_dev.c:94:3: error: void
function 'mlxsw_linecard_bdev_del' should not return a value
tree: https://github.com/jpirko/linux_mlxsw jiri_devel_lc_dev
head: b3fdf991f2ce5b1a4e7f527fcfc27c9d413ae566
commit: 1a2503c635b5bd91f6eb2d2520960d609df0e6ee [2/15] mlxsw: core_linecards: Introduce per line card auxiliary device
config: riscv-randconfig-r042-20220616 (https://download.01.org/0day-ci/archive/20220616/202206161832.71XjiKsD-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project f0e608de27b3d568000046eebf3712ab542979d6)
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 riscv cross compiling tool for clang build
# apt-get install binutils-riscv64-linux-gnu
# https://github.com/jpirko/linux_mlxsw/commit/1a2503c635b5bd91f6eb2d2520960d609df0e6ee
git remote add jpirko-mlxsw https://github.com/jpirko/linux_mlxsw
git fetch --no-tags jpirko-mlxsw jiri_devel_lc_dev
git checkout 1a2503c635b5bd91f6eb2d2520960d609df0e6ee
# 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=riscv SHELL=/bin/bash drivers/net/ethernet/mellanox/mlxsw/
If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@...el.com>
All errors (new ones prefixed by >>):
In file included from drivers/net/ethernet/mellanox/mlxsw/core_linecard_dev.c:13:
In file included from include/net/devlink.h:14:
In file included from include/linux/netdevice.h:38:
In file included from include/net/net_namespace.h:40:
In file included from include/linux/skbuff.h:17:
In file included from include/linux/bvec.h:10:
In file included from include/linux/highmem.h:11:
In file included from include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from include/asm-generic/hardirq.h:17:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/riscv/include/asm/io.h:136:
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/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/net/ethernet/mellanox/mlxsw/core_linecard_dev.c:13:
In file included from include/net/devlink.h:14:
In file included from include/linux/netdevice.h:38:
In file included from include/net/net_namespace.h:40:
In file included from include/linux/skbuff.h:17:
In file included from include/linux/bvec.h:10:
In file included from include/linux/highmem.h:11:
In file included from include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from include/asm-generic/hardirq.h:17:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/riscv/include/asm/io.h:136:
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/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/net/ethernet/mellanox/mlxsw/core_linecard_dev.c:13:
In file included from include/net/devlink.h:14:
In file included from include/linux/netdevice.h:38:
In file included from include/net/net_namespace.h:40:
In file included from include/linux/skbuff.h:17:
In file included from include/linux/bvec.h:10:
In file included from include/linux/highmem.h:11:
In file included from include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from include/asm-generic/hardirq.h:17:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/riscv/include/asm/io.h:136:
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:1024:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
~~~~~~~~~~ ^
>> drivers/net/ethernet/mellanox/mlxsw/core_linecard_dev.c:94:3: error: void function 'mlxsw_linecard_bdev_del' should not return a value [-Wreturn-type]
return NULL;
^ ~~~~
7 warnings and 1 error generated.
vim +/mlxsw_linecard_bdev_del +94 drivers/net/ethernet/mellanox/mlxsw/core_linecard_dev.c
88
89 void mlxsw_linecard_bdev_del(struct mlxsw_linecard *linecard)
90 {
91 struct mlxsw_linecard_bdev *linecard_bdev = linecard->bdev;
92
93 if (!linecard_bdev)
> 94 return NULL;
95 auxiliary_device_delete(&linecard_bdev->adev);
96 auxiliary_device_uninit(&linecard_bdev->adev);
97 linecard->bdev = NULL;
98 }
99
--
0-DAY CI Kernel Test Service
https://01.org/lkp
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