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Date: Sat, 26 Mar 2022 19:04:13 +0800
From: kernel test robot <lkp@...el.com>
To: Bart Van Assche <bvanassche@....org>
Cc: llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
linux-kernel@...r.kernel.org
Subject: [bvanassche:ufs-for-next-2022-03-25 32/32]
drivers/scsi/ufs-drivers/ufs-exynos.c:1596:34: warning: unused variable
'exynos_ufs_of_match'
Hi Bart,
First bad commit (maybe != root cause):
tree: https://github.com/bvanassche/linux ufs-for-next-2022-03-25
head: 976ba17fe820846e56fb154b1ae35f5d90be192b
commit: 976ba17fe820846e56fb154b1ae35f5d90be192b [32/32] scsi: ufs: Split the drivers/scsi/ufs directory
config: s390-randconfig-r013-20220324 (https://download.01.org/0day-ci/archive/20220326/202203261830.M6xPZjki-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 0f6d9501cf49ce02937099350d08f20c4af86f3d)
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/bvanassche/linux/commit/976ba17fe820846e56fb154b1ae35f5d90be192b
git remote add bvanassche https://github.com/bvanassche/linux
git fetch --no-tags bvanassche ufs-for-next-2022-03-25
git checkout 976ba17fe820846e56fb154b1ae35f5d90be192b
# save the config file to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=s390 SHELL=/bin/bash drivers/scsi/ufs-drivers/
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>
All warnings (new ones prefixed by >>):
In file included from drivers/scsi/ufs-drivers/ufs-exynos.c:16:
In file included from include/linux/of_address.h:7:
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/scsi/ufs-drivers/ufs-exynos.c:16:
In file included from include/linux/of_address.h:7:
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/scsi/ufs-drivers/ufs-exynos.c:16:
In file included from include/linux/of_address.h:7:
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/scsi/ufs-drivers/ufs-exynos.c:1596:34: warning: unused variable 'exynos_ufs_of_match' [-Wunused-const-variable]
static const struct of_device_id exynos_ufs_of_match[] = {
^
13 warnings generated.
vim +/exynos_ufs_of_match +1596 drivers/scsi/ufs-drivers/ufs-exynos.c
55f4b1f73631a0 drivers/scsi/ufs/ufs-exynos.c Alim Akhtar 2020-05-28 1595
55f4b1f73631a0 drivers/scsi/ufs/ufs-exynos.c Alim Akhtar 2020-05-28 @1596 static const struct of_device_id exynos_ufs_of_match[] = {
55f4b1f73631a0 drivers/scsi/ufs/ufs-exynos.c Alim Akhtar 2020-05-28 1597 { .compatible = "samsung,exynos7-ufs",
55f4b1f73631a0 drivers/scsi/ufs/ufs-exynos.c Alim Akhtar 2020-05-28 1598 .data = &exynos_ufs_drvs },
cc52e15397cc5d drivers/scsi/ufs/ufs-exynos.c Chanho Park 2021-10-18 1599 { .compatible = "samsung,exynosautov9-ufs",
cc52e15397cc5d drivers/scsi/ufs/ufs-exynos.c Chanho Park 2021-10-18 1600 .data = &exynosauto_ufs_drvs },
be39f4fd8dd430 drivers/scsi/ufs/ufs-exynos.c Chanho Park 2021-10-18 1601 { .compatible = "samsung,exynosautov9-ufs-vh",
be39f4fd8dd430 drivers/scsi/ufs/ufs-exynos.c Chanho Park 2021-10-18 1602 .data = &exynosauto_ufs_vh_drvs },
55f4b1f73631a0 drivers/scsi/ufs/ufs-exynos.c Alim Akhtar 2020-05-28 1603 {},
55f4b1f73631a0 drivers/scsi/ufs/ufs-exynos.c Alim Akhtar 2020-05-28 1604 };
55f4b1f73631a0 drivers/scsi/ufs/ufs-exynos.c Alim Akhtar 2020-05-28 1605
:::::: The code at line 1596 was first introduced by commit
:::::: 55f4b1f73631a0817717fe6e98517de51b4c3527 scsi: ufs: ufs-exynos: Add UFS host support for Exynos SoCs
:::::: TO: Alim Akhtar <alim.akhtar@...sung.com>
:::::: CC: Martin K. Petersen <martin.petersen@...cle.com>
--
0-DAY CI Kernel Test Service
https://01.org/lkp
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