* [jgunthorpe:pr/3 42/42] drivers/s390/cio/vfio_ccw_ops.c:92:53: error: use of undeclared identifier 'dev'
@ 2021-02-26 2:51 kernel test robot
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From: kernel test robot @ 2021-02-26 2:51 UTC (permalink / raw)
To: kbuild-all
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tree: https://github.com/jgunthorpe/linux pr/3
head: ce3825e9a69141c3d991ef41ac5e5a39655a7107
commit: ce3825e9a69141c3d991ef41ac5e5a39655a7107 [42/42] vfio/mdev: Correct the function signatures for the mdev_type_attributes
config: s390-randconfig-r031-20210225 (attached as .config)
compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project b889ef4214bc6dc8880fdd4badc0dcd9a3197753)
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://github.com/jgunthorpe/linux/commit/ce3825e9a69141c3d991ef41ac5e5a39655a7107
git remote add jgunthorpe https://github.com/jgunthorpe/linux
git fetch --no-tags jgunthorpe pr/3
git checkout ce3825e9a69141c3d991ef41ac5e5a39655a7107
# 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 errors (new ones prefixed by >>):
include/uapi/linux/swab.h:19:12: note: expanded from macro '___constant_swab32'
(((__u32)(x) & (__u32)0x000000ffUL) << 24) | \
^
In file included from drivers/s390/cio/vfio_ccw_ops.c:13:
In file included from include/linux/vfio.h:12:
In file included from include/linux/iommu.h:10:
In file included from include/linux/scatterlist.h:9:
In file included from arch/s390/include/asm/io.h:80:
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:119:21: note: expanded from macro '__swab32'
___constant_swab32(x) : \
^
include/uapi/linux/swab.h:20:12: note: expanded from macro '___constant_swab32'
(((__u32)(x) & (__u32)0x0000ff00UL) << 8) | \
^
In file included from drivers/s390/cio/vfio_ccw_ops.c:13:
In file included from include/linux/vfio.h:12:
In file included from include/linux/iommu.h:10:
In file included from include/linux/scatterlist.h:9:
In file included from arch/s390/include/asm/io.h:80:
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:119:21: note: expanded from macro '__swab32'
___constant_swab32(x) : \
^
include/uapi/linux/swab.h:21:12: note: expanded from macro '___constant_swab32'
(((__u32)(x) & (__u32)0x00ff0000UL) >> 8) | \
^
In file included from drivers/s390/cio/vfio_ccw_ops.c:13:
In file included from include/linux/vfio.h:12:
In file included from include/linux/iommu.h:10:
In file included from include/linux/scatterlist.h:9:
In file included from arch/s390/include/asm/io.h:80:
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:119:21: note: expanded from macro '__swab32'
___constant_swab32(x) : \
^
include/uapi/linux/swab.h:22:12: note: expanded from macro '___constant_swab32'
(((__u32)(x) & (__u32)0xff000000UL) >> 24)))
^
In file included from drivers/s390/cio/vfio_ccw_ops.c:13:
In file included from include/linux/vfio.h:12:
In file included from include/linux/iommu.h:10:
In file included from include/linux/scatterlist.h:9:
In file included from arch/s390/include/asm/io.h:80:
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:120:12: note: expanded from macro '__swab32'
__fswab32(x))
^
In file included from drivers/s390/cio/vfio_ccw_ops.c:13:
In file included from include/linux/vfio.h:12:
In file included from include/linux/iommu.h:10:
In file included from include/linux/scatterlist.h:9:
In file included from arch/s390/include/asm/io.h:80:
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/s390/cio/vfio_ccw_ops.c:92:53: error: use of undeclared identifier 'dev'
struct vfio_ccw_private *private = dev_get_drvdata(dev);
^
20 warnings and 1 error generated.
vim +/dev +92 drivers/s390/cio/vfio_ccw_ops.c
84cd8fc48478b5 Dong Jia Shi 2017-03-17 87
ce3825e9a69141 Jason Gunthorpe 2021-02-25 88 static ssize_t available_instances_show(struct mdev_type *mtype,
ce3825e9a69141 Jason Gunthorpe 2021-02-25 89 struct mdev_type_attribute *attr,
ce3825e9a69141 Jason Gunthorpe 2021-02-25 90 char *buf)
84cd8fc48478b5 Dong Jia Shi 2017-03-17 91 {
84cd8fc48478b5 Dong Jia Shi 2017-03-17 @92 struct vfio_ccw_private *private = dev_get_drvdata(dev);
84cd8fc48478b5 Dong Jia Shi 2017-03-17 93
84cd8fc48478b5 Dong Jia Shi 2017-03-17 94 return sprintf(buf, "%d\n", atomic_read(&private->avail));
84cd8fc48478b5 Dong Jia Shi 2017-03-17 95 }
5bf185366bfca4 Sebastian Ott 2017-05-15 96 static MDEV_TYPE_ATTR_RO(available_instances);
84cd8fc48478b5 Dong Jia Shi 2017-03-17 97
:::::: The code at line 92 was first introduced by commit
:::::: 84cd8fc48478b5e67b3f1600717299e11430a67e vfio: ccw: register vfio_ccw to the mediated device framework
:::::: TO: Dong Jia Shi <bjsdjshi@linux.vnet.ibm.com>
:::::: CC: Cornelia Huck <cornelia.huck@de.ibm.com>
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org
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2021-02-26 2:51 [jgunthorpe:pr/3 42/42] drivers/s390/cio/vfio_ccw_ops.c:92:53: error: use of undeclared identifier 'dev' kernel test robot
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