[kbuild-all] [hch-block:block-fs.h-cleanup 10/10] drivers/s390/block/dasd_ioctl.c:684:5: error: conflicting types for 'dasd_biodasdinfo'

Tuesday, 16 June 2020

tree:   git://git.infradead.org/users/hch/block.git block-fs.h-cleanup
head:   1261c655dd25c5a21aafc9912a2b09a4956cf818
commit: 1261c655dd25c5a21aafc9912a2b09a4956cf818 [10/10] block: move struct block_device
to blk_types.h
config: s390-randconfig-r006-20200615 (attached as .config)
compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project
3d8149c2a1228609fd7d7c91a04681304a2f0ca9)
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-s390-linux-gnu
        git checkout 1261c655dd25c5a21aafc9912a2b09a4956cf818
        # 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(a)intel.com&gt;

All error/warnings (new ones prefixed by >>, old ones prefixed by <<):

In file included from drivers/s390/block/dasd_ioctl.c:25:
...
> include/linux/dasd_mod.h:7:36: warning: declaration of
'struct gendisk' will not be visible outside of this function [-Wvisibility]
extern int dasd_biodasdinfo(struct gendisk *disk, dasd_information2_t *info);
^
In file included from drivers/s390/block/dasd_ioctl.c:30:
In file included from drivers/s390/block/dasd_int.h:49:
In file included from include/linux/blkdev.h:25:
In file included from include/linux/scatterlist.h:9:
In file included from arch/s390/include/asm/io.h:72:
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:477:45: warning: performing pointer arithmetic on a null pointer
has undefined behavior [-Wnull-pointer-arithmetic]
val = __le16_to_cpu(__raw_readw(PCI_IOBASE + addr));
~~~~~~~~~~ ^
include/uapi/linux/byteorder/big_endian.h:36:59: note: expanded from macro
'__le16_to_cpu'
#define __le16_to_cpu(x) __swab16((__force __u16)(__le16)(x))
^
include/uapi/linux/swab.h:105:32: note: expanded from macro '__swab16'
(__builtin_constant_p((__u16)(x)) ?                                              ^
In file included from drivers/s390/block/dasd_ioctl.c:30:
In file included from drivers/s390/block/dasd_int.h:49:
In file included from include/linux/blkdev.h:25:
In file included from include/linux/scatterlist.h:9:
In file included from arch/s390/include/asm/io.h:72:
include/asm-generic/io.h:477:45: warning: performing pointer arithmetic on a null pointer
has undefined behavior [-Wnull-pointer-arithmetic]
val = __le16_to_cpu(__raw_readw(PCI_IOBASE + addr));
~~~~~~~~~~ ^
include/uapi/linux/byteorder/big_endian.h:36:59: note: expanded from macro
'__le16_to_cpu'
#define __le16_to_cpu(x) __swab16((__force __u16)(__le16)(x))
^
include/uapi/linux/swab.h:106:21: note: expanded from macro '__swab16'
___constant_swab16(x) :                                               ^
include/uapi/linux/swab.h:15:12: note: expanded from macro '___constant_swab16'
(((__u16)(x) & (__u16)0x00ffU) << 8) |                                       ^
In file included from drivers/s390/block/dasd_ioctl.c:30:
In file included from drivers/s390/block/dasd_int.h:49:
In file included from include/linux/blkdev.h:25:
In file included from include/linux/scatterlist.h:9:
In file included from arch/s390/include/asm/io.h:72:
include/asm-generic/io.h:477:45: warning: performing pointer arithmetic on a null pointer
has undefined behavior [-Wnull-pointer-arithmetic]
val = __le16_to_cpu(__raw_readw(PCI_IOBASE + addr));
~~~~~~~~~~ ^
include/uapi/linux/byteorder/big_endian.h:36:59: note: expanded from macro
'__le16_to_cpu'
#define __le16_to_cpu(x) __swab16((__force __u16)(__le16)(x))
^
include/uapi/linux/swab.h:106:21: note: expanded from macro '__swab16'
___constant_swab16(x) :                                               ^
include/uapi/linux/swab.h:16:12: note: expanded from macro '___constant_swab16'
(((__u16)(x) & (__u16)0xff00U) >> 8)))
^
In file included from drivers/s390/block/dasd_ioctl.c:30:
In file included from drivers/s390/block/dasd_int.h:49:
In file included from include/linux/blkdev.h:25:
In file included from include/linux/scatterlist.h:9:
In file included from arch/s390/include/asm/io.h:72:
include/asm-generic/io.h:477:45: warning: performing pointer arithmetic on a null pointer
has undefined behavior [-Wnull-pointer-arithmetic]
val = __le16_to_cpu(__raw_readw(PCI_IOBASE + addr));
~~~~~~~~~~ ^
include/uapi/linux/byteorder/big_endian.h:36:59: note: expanded from macro
'__le16_to_cpu'
#define __le16_to_cpu(x) __swab16((__force __u16)(__le16)(x))
^
include/uapi/linux/swab.h:107:12: note: expanded from macro '__swab16'
__fswab16(x))
^
In file included from drivers/s390/block/dasd_ioctl.c:30:
In file included from drivers/s390/block/dasd_int.h:49:
In file included from include/linux/blkdev.h:25:
In file included from include/linux/scatterlist.h:9:
In file included from arch/s390/include/asm/io.h:72:
include/asm-generic/io.h:490:45: warning: performing pointer arithmetic on a null pointer
has undefined behavior [-Wnull-pointer-arithmetic]
val = __le32_to_cpu(__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:118:32: note: expanded from macro '__swab32'
(__builtin_constant_p((__u32)(x)) ?                                              ^
In file included from drivers/s390/block/dasd_ioctl.c:30:
In file included from drivers/s390/block/dasd_int.h:49:
In file included from include/linux/blkdev.h:25:
In file included from include/linux/scatterlist.h:9:
In file included from arch/s390/include/asm/io.h:72:
include/asm-generic/io.h:490:45: warning: performing pointer arithmetic on a null pointer
has undefined behavior [-Wnull-pointer-arithmetic]
val = __le32_to_cpu(__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:19:12: note: expanded from macro '___constant_swab32'
(((__u32)(x) & (__u32)0x000000ffUL) << 24) |                                 ^
In file included from drivers/s390/block/dasd_ioctl.c:30:
In file included from drivers/s390/block/dasd_int.h:49:
In file included from include/linux/blkdev.h:25:
In file included from include/linux/scatterlist.h:9:
In file included from arch/s390/include/asm/io.h:72:
include/asm-generic/io.h:490:45: warning: performing pointer arithmetic on a null pointer
has undefined behavior [-Wnull-pointer-arithmetic]
val = __le32_to_cpu(__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/block/dasd_ioctl.c:30:
In file included from drivers/s390/block/dasd_int.h:49:
In file included from include/linux/blkdev.h:25:
In file included from include/linux/scatterlist.h:9:
In file included from arch/s390/include/asm/io.h:72:
include/asm-generic/io.h:490:45: warning: performing pointer arithmetic on a null pointer
has undefined behavior [-Wnull-pointer-arithmetic]
val = __le32_to_cpu(__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/block/dasd_ioctl.c:30:
In file included from drivers/s390/block/dasd_int.h:49:
In file included from include/linux/blkdev.h:25:
In file included from include/linux/scatterlist.h:9:
In file included from arch/s390/include/asm/io.h:72:
include/asm-generic/io.h:490:45: warning: performing pointer arithmetic on a null pointer
has undefined behavior [-Wnull-pointer-arithmetic]
val = __le32_to_cpu(__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/block/dasd_ioctl.c:30:
In file included from drivers/s390/block/dasd_int.h:49:
In file included from include/linux/blkdev.h:25:
In file included from include/linux/scatterlist.h:9:
In file included from arch/s390/include/asm/io.h:72:
include/asm-generic/io.h:490:45: warning: performing pointer arithmetic on a null pointer
has undefined behavior [-Wnull-pointer-arithmetic]
val = __le32_to_cpu(__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/block/dasd_ioctl.c:30:
In file included from drivers/s390/block/dasd_int.h:49:
In file included from include/linux/blkdev.h:25:
In file included from include/linux/scatterlist.h:9:
In file included from arch/s390/include/asm/io.h:72:
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:511:46: warning: performing pointer arithmetic on a null pointer
has undefined behavior [-Wnull-pointer-arithmetic]
__raw_writew(cpu_to_le16(value), PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:521:46: warning: performing pointer arithmetic on a null pointer
has undefined behavior [-Wnull-pointer-arithmetic]
__raw_writel(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/block/dasd_ioctl.c:684:5: error: conflicting types
for 'dasd_biodasdinfo' int dasd_biodasdinfo(struct gendisk *disk, struct
dasd_information2_t *info)
^
include/linux/dasd_mod.h:7:12: note: previous declaration is here
extern int dasd_biodasdinfo(struct gendisk *disk, dasd_information2_t *info);
^
21 warnings and 1 error generated.

vim +/dasd_biodasdinfo +684 drivers/s390/block/dasd_ioctl.c

26d7e28e38206b Stefan Haberland 2020-05-19  668  
26d7e28e38206b Stefan Haberland 2020-05-19  669  
26d7e28e38206b Stefan Haberland 2020-05-19  670  /**
26d7e28e38206b Stefan Haberland 2020-05-19  671   * dasd_biodasdinfo() - fill out the dasd
information structure
26d7e28e38206b Stefan Haberland 2020-05-19  672   * @disk [in]: pointer to gendisk
structure that references a DASD
26d7e28e38206b Stefan Haberland 2020-05-19  673   * @info [out]: pointer to the
dasd_information2_t structure
26d7e28e38206b Stefan Haberland 2020-05-19  674   *
26d7e28e38206b Stefan Haberland 2020-05-19  675   * Provide access to DASD specific
information.
26d7e28e38206b Stefan Haberland 2020-05-19  676   * The gendisk structure is checked if it
belongs to the DASD driver by
26d7e28e38206b Stefan Haberland 2020-05-19  677   * comparing the gendisk->fops
pointer.
26d7e28e38206b Stefan Haberland 2020-05-19  678   * If it does not belong to the DASD
driver -EINVAL is returned.
26d7e28e38206b Stefan Haberland 2020-05-19  679   * Otherwise the provided
dasd_information2_t structure is filled out.
26d7e28e38206b Stefan Haberland 2020-05-19  680   *
26d7e28e38206b Stefan Haberland 2020-05-19  681   * Returns:
26d7e28e38206b Stefan Haberland 2020-05-19  682   *   %0 on success and a negative error
value on failure.
26d7e28e38206b Stefan Haberland 2020-05-19  683   */
26d7e28e38206b Stefan Haberland 2020-05-19 @684  int dasd_biodasdinfo(struct gendisk
*disk, struct dasd_information2_t *info)

:::::: The code at line 684 was first introduced by commit
:::::: 26d7e28e38206b1b3207af1409eee2269ab36f82 s390/dasd: remove ioctl_by_bdev calls

:::::: TO: Stefan Haberland <sth(a)linux.ibm.com&gt;
:::::: CC: Jens Axboe <axboe(a)kernel.dk&gt;

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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[kbuild-all] [hch-block:block-fs.h-cleanup 10/10] drivers/s390/block/dasd_ioctl.c:684:5: error: conflicting types for 'dasd_biodasdinfo'