From: kernel test robot <lkp@intel.com>
To: Stanislaw Kardach <kda@semihalf.com>
Cc: kbuild-all@lists.01.org,
Linux Memory Management List <linux-mm@kvack.org>,
Palmer Dabbelt <palmerdabbelt@google.com>
Subject: [linux-next:master 4945/5886] drivers/pci/pci-sysfs.c:1098:25: sparse: sparse: cast removes address space '__iomem' of expression
Date: Sat, 29 May 2021 05:10:26 +0800 [thread overview]
Message-ID: <202105290520.6Vn1guPQ-lkp@intel.com> (raw)
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tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head: 3e029760e6f8ce90c122c267a039ae73b3f1f5a4
commit: db756746807b5cb64bbe2e6ac4ff38d18b7787ed [4945/5886] riscv: enable generic PCI resource mapping
config: riscv-allyesconfig (attached as .config)
compiler: riscv64-linux-gcc (GCC) 9.3.0
reproduce:
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# apt-get install sparse
# sparse version: v0.6.3-341-g8af24329-dirty
# https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=db756746807b5cb64bbe2e6ac4ff38d18b7787ed
git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
git fetch --no-tags linux-next master
git checkout db756746807b5cb64bbe2e6ac4ff38d18b7787ed
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' W=1 ARCH=riscv
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
sparse warnings: (new ones prefixed by >>)
>> drivers/pci/pci-sysfs.c:1098:25: sparse: sparse: cast removes address space '__iomem' of expression
>> drivers/pci/pci-sysfs.c:1098:25: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] __iomem *addr @@ got void * @@
drivers/pci/pci-sysfs.c:1098:25: sparse: expected void volatile [noderef] __iomem *addr
drivers/pci/pci-sysfs.c:1098:25: sparse: got void *
drivers/pci/pci-sysfs.c:1100:38: sparse: sparse: cast removes address space '__iomem' of expression
>> drivers/pci/pci-sysfs.c:1100:38: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *addr @@ got void * @@
drivers/pci/pci-sysfs.c:1100:38: sparse: expected void const volatile [noderef] __iomem *addr
drivers/pci/pci-sysfs.c:1100:38: sparse: got void *
drivers/pci/pci-sysfs.c:1104:25: sparse: sparse: cast removes address space '__iomem' of expression
drivers/pci/pci-sysfs.c:1104:25: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] __iomem *addr @@ got void * @@
drivers/pci/pci-sysfs.c:1104:25: sparse: expected void volatile [noderef] __iomem *addr
drivers/pci/pci-sysfs.c:1104:25: sparse: got void *
drivers/pci/pci-sysfs.c:1106:39: sparse: sparse: cast removes address space '__iomem' of expression
drivers/pci/pci-sysfs.c:1106:39: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *addr @@ got void * @@
drivers/pci/pci-sysfs.c:1106:39: sparse: expected void const volatile [noderef] __iomem *addr
drivers/pci/pci-sysfs.c:1106:39: sparse: got void *
drivers/pci/pci-sysfs.c:1110:25: sparse: sparse: cast removes address space '__iomem' of expression
drivers/pci/pci-sysfs.c:1110:25: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] __iomem *addr @@ got void * @@
drivers/pci/pci-sysfs.c:1110:25: sparse: expected void volatile [noderef] __iomem *addr
drivers/pci/pci-sysfs.c:1110:25: sparse: got void *
drivers/pci/pci-sysfs.c:1112:39: sparse: sparse: cast removes address space '__iomem' of expression
drivers/pci/pci-sysfs.c:1112:39: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *addr @@ got void * @@
drivers/pci/pci-sysfs.c:1112:39: sparse: expected void const volatile [noderef] __iomem *addr
drivers/pci/pci-sysfs.c:1112:39: sparse: got void *
vim +/__iomem +1098 drivers/pci/pci-sysfs.c
^1da177e4c3f41 Linus Torvalds 2005-04-16 1078
3c78bc61f5ef3b Ryan Desfosses 2014-04-18 1079 static ssize_t pci_resource_io(struct file *filp, struct kobject *kobj,
8633328be24267 Alex Williamson 2010-07-19 1080 struct bin_attribute *attr, char *buf,
8633328be24267 Alex Williamson 2010-07-19 1081 loff_t off, size_t count, bool write)
8633328be24267 Alex Williamson 2010-07-19 1082 {
554a60379aaa50 Geliang Tang 2015-12-23 1083 struct pci_dev *pdev = to_pci_dev(kobj_to_dev(kobj));
dca40b186b757c David Woodhouse 2017-04-12 1084 int bar = (unsigned long)attr->private;
8633328be24267 Alex Williamson 2010-07-19 1085 unsigned long port = off;
8633328be24267 Alex Williamson 2010-07-19 1086
dca40b186b757c David Woodhouse 2017-04-12 1087 port += pci_resource_start(pdev, bar);
8633328be24267 Alex Williamson 2010-07-19 1088
dca40b186b757c David Woodhouse 2017-04-12 1089 if (port > pci_resource_end(pdev, bar))
8633328be24267 Alex Williamson 2010-07-19 1090 return 0;
8633328be24267 Alex Williamson 2010-07-19 1091
dca40b186b757c David Woodhouse 2017-04-12 1092 if (port + count - 1 > pci_resource_end(pdev, bar))
8633328be24267 Alex Williamson 2010-07-19 1093 return -EINVAL;
8633328be24267 Alex Williamson 2010-07-19 1094
8633328be24267 Alex Williamson 2010-07-19 1095 switch (count) {
8633328be24267 Alex Williamson 2010-07-19 1096 case 1:
8633328be24267 Alex Williamson 2010-07-19 1097 if (write)
8633328be24267 Alex Williamson 2010-07-19 @1098 outb(*(u8 *)buf, port);
8633328be24267 Alex Williamson 2010-07-19 1099 else
8633328be24267 Alex Williamson 2010-07-19 @1100 *(u8 *)buf = inb(port);
8633328be24267 Alex Williamson 2010-07-19 1101 return 1;
8633328be24267 Alex Williamson 2010-07-19 1102 case 2:
8633328be24267 Alex Williamson 2010-07-19 1103 if (write)
8633328be24267 Alex Williamson 2010-07-19 1104 outw(*(u16 *)buf, port);
8633328be24267 Alex Williamson 2010-07-19 1105 else
8633328be24267 Alex Williamson 2010-07-19 1106 *(u16 *)buf = inw(port);
8633328be24267 Alex Williamson 2010-07-19 1107 return 2;
8633328be24267 Alex Williamson 2010-07-19 1108 case 4:
8633328be24267 Alex Williamson 2010-07-19 1109 if (write)
8633328be24267 Alex Williamson 2010-07-19 1110 outl(*(u32 *)buf, port);
8633328be24267 Alex Williamson 2010-07-19 1111 else
8633328be24267 Alex Williamson 2010-07-19 1112 *(u32 *)buf = inl(port);
8633328be24267 Alex Williamson 2010-07-19 1113 return 4;
8633328be24267 Alex Williamson 2010-07-19 1114 }
8633328be24267 Alex Williamson 2010-07-19 1115 return -EINVAL;
8633328be24267 Alex Williamson 2010-07-19 1116 }
8633328be24267 Alex Williamson 2010-07-19 1117
:::::: The code at line 1098 was first introduced by commit
:::::: 8633328be242677fdedc42052838dd0608e7f342 PCI: Allow read/write access to sysfs I/O port resources
:::::: TO: Alex Williamson <alex.williamson@redhat.com>
:::::: CC: Jesse Barnes <jbarnes@virtuousgeek.org>
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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reply other threads:[~2021-05-28 21:11 UTC|newest]
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