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Date: Tue, 9 Aug 2022 21:10:18 +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,
"Martin K. Petersen" <martin.petersen@...cle.com>,
Bean Huo <beanhuo@...ron.com>
Subject: drivers/ufs/host/tc-dwc-g210-pltfrm.c:36:34: warning: unused
variable 'tc_dwc_g210_pltfm_match'
Hi Bart,
First bad commit (maybe != root cause):
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: eb555cb5b794f4e12a9897f3d46d5a72104cd4a7
commit: dd11376b9f1b73aca3f8c6eb541486bbb6996f05 scsi: ufs: Split the drivers/scsi/ufs directory
date: 3 months ago
config: s390-randconfig-r044-20220808 (https://download.01.org/0day-ci/archive/20220809/202208092130.BVmamibT-lkp@intel.com/config)
compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project 5f1c7e2cc5a3c07cbc2412e851a7283c1841f520)
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=dd11376b9f1b73aca3f8c6eb541486bbb6996f05
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout dd11376b9f1b73aca3f8c6eb541486bbb6996f05
# 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/ufs/host/ lib/
If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@...el.com>
All warnings (new ones prefixed by >>):
In file included from drivers/ufs/host/tc-dwc-g210-pltfrm.c:17:
In file included from drivers/ufs/host/ufshcd-pltfrm.h:8:
In file included from include/ufs/ufshcd.h:17:
In file included from include/linux/blk-mq.h:8:
In file included from include/linux/scatterlist.h:9:
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/ufs/host/tc-dwc-g210-pltfrm.c:17:
In file included from drivers/ufs/host/ufshcd-pltfrm.h:8:
In file included from include/ufs/ufshcd.h:17:
In file included from include/linux/blk-mq.h:8:
In file included from include/linux/scatterlist.h:9:
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/ufs/host/tc-dwc-g210-pltfrm.c:17:
In file included from drivers/ufs/host/ufshcd-pltfrm.h:8:
In file included from include/ufs/ufshcd.h:17:
In file included from include/linux/blk-mq.h:8:
In file included from include/linux/scatterlist.h:9:
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/ufs/host/tc-dwc-g210-pltfrm.c:36:34: warning: unused variable 'tc_dwc_g210_pltfm_match' [-Wunused-const-variable]
static const struct of_device_id tc_dwc_g210_pltfm_match[] = {
^
13 warnings generated.
--
In file included from drivers/ufs/host/ufs-hisi.c:13:
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/ufs/host/ufs-hisi.c:13:
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/ufs/host/ufs-hisi.c:13:
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/ufs/host/ufs-hisi.c:561:34: warning: unused variable 'ufs_hisi_of_match' [-Wunused-const-variable]
static const struct of_device_id ufs_hisi_of_match[] = {
^
13 warnings generated.
vim +/tc_dwc_g210_pltfm_match +36 drivers/ufs/host/tc-dwc-g210-pltfrm.c
fc040a3fc47cad drivers/scsi/ufs/tc-dwc-g210-pltfrm.c Joao Pinto 2016-05-11 35
fc040a3fc47cad drivers/scsi/ufs/tc-dwc-g210-pltfrm.c Joao Pinto 2016-05-11 @36 static const struct of_device_id tc_dwc_g210_pltfm_match[] = {
fc040a3fc47cad drivers/scsi/ufs/tc-dwc-g210-pltfrm.c Joao Pinto 2016-05-11 37 {
fc040a3fc47cad drivers/scsi/ufs/tc-dwc-g210-pltfrm.c Joao Pinto 2016-05-11 38 .compatible = "snps,g210-tc-6.00-20bit",
fc040a3fc47cad drivers/scsi/ufs/tc-dwc-g210-pltfrm.c Joao Pinto 2016-05-11 39 .data = &tc_dwc_g210_20bit_pltfm_hba_vops,
fc040a3fc47cad drivers/scsi/ufs/tc-dwc-g210-pltfrm.c Joao Pinto 2016-05-11 40 },
fc040a3fc47cad drivers/scsi/ufs/tc-dwc-g210-pltfrm.c Joao Pinto 2016-05-11 41 {
fc040a3fc47cad drivers/scsi/ufs/tc-dwc-g210-pltfrm.c Joao Pinto 2016-05-11 42 .compatible = "snps,g210-tc-6.00-40bit",
fc040a3fc47cad drivers/scsi/ufs/tc-dwc-g210-pltfrm.c Joao Pinto 2016-05-11 43 .data = &tc_dwc_g210_40bit_pltfm_hba_vops,
fc040a3fc47cad drivers/scsi/ufs/tc-dwc-g210-pltfrm.c Joao Pinto 2016-05-11 44 },
fc040a3fc47cad drivers/scsi/ufs/tc-dwc-g210-pltfrm.c Joao Pinto 2016-05-11 45 { },
fc040a3fc47cad drivers/scsi/ufs/tc-dwc-g210-pltfrm.c Joao Pinto 2016-05-11 46 };
fc040a3fc47cad drivers/scsi/ufs/tc-dwc-g210-pltfrm.c Joao Pinto 2016-05-11 47 MODULE_DEVICE_TABLE(of, tc_dwc_g210_pltfm_match);
fc040a3fc47cad drivers/scsi/ufs/tc-dwc-g210-pltfrm.c Joao Pinto 2016-05-11 48
:::::: The code at line 36 was first introduced by commit
:::::: fc040a3fc47cad038f774275ea61fe6d5b57d7cc ufs: add TC G210 platform driver
:::::: TO: Joao Pinto <Joao.Pinto@...opsys.com>
:::::: CC: Martin K. Petersen <martin.petersen@...cle.com>
--
0-DAY CI Kernel Test Service
https://01.org/lkp
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