arch/m68k/coldfire/pci.c:115:17: sparse: sparse: incorrect type in assignment (different base types)

From: kernel test robot
Date: Sun Apr 04 2021 - 02:51:45 EST

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tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 2023a53bdf41b7646b1d384b6816af06309f73a5
commit: 005b73d0dd83c9cb9420a196bea8070cde30ecac m68knommu: __force type casts for raw IO access
date: 8 months ago
config: m68k-randconfig-s032-20210403 (attached as .config)
compiler: m68k-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: v0.6.3-279-g6d5d9b42-dirty
# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=005b73d0dd83c9cb9420a196bea8070cde30ecac
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout 005b73d0dd83c9cb9420a196bea8070cde30ecac
# 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__' ARCH=m68k

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@xxxxxxxxx>

sparse warnings: (new ones prefixed by >>)
arch/m68k/coldfire/pci.c:80:26: sparse: sparse: cast to restricted __le16
arch/m68k/coldfire/pci.c:80:26: sparse: sparse: cast to restricted __le16
arch/m68k/coldfire/pci.c:80:26: sparse: sparse: cast to restricted __le16
arch/m68k/coldfire/pci.c:80:26: sparse: sparse: cast to restricted __le16
arch/m68k/coldfire/pci.c:83:26: sparse: sparse: cast to restricted __le32
arch/m68k/coldfire/pci.c:83:26: sparse: sparse: cast to restricted __le32
arch/m68k/coldfire/pci.c:83:26: sparse: sparse: cast to restricted __le32
arch/m68k/coldfire/pci.c:83:26: sparse: sparse: cast to restricted __le32
arch/m68k/coldfire/pci.c:83:26: sparse: sparse: cast to restricted __le32
arch/m68k/coldfire/pci.c:83:26: sparse: sparse: cast to restricted __le32
arch/m68k/coldfire/pci.c:112:17: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned short volatile [usertype] @@ got restricted __le16 [usertype] @@
arch/m68k/coldfire/pci.c:112:17: sparse: expected unsigned short volatile [usertype]
arch/m68k/coldfire/pci.c:112:17: sparse: got restricted __le16 [usertype]
>> arch/m68k/coldfire/pci.c:115:17: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned int volatile [usertype] @@ got restricted __le32 [usertype] @@
arch/m68k/coldfire/pci.c:115:17: sparse: expected unsigned int volatile [usertype]
arch/m68k/coldfire/pci.c:115:17: sparse: got restricted __le32 [usertype]

vim +115 arch/m68k/coldfire/pci.c

bbdea849ed6ba6 arch/m68k/platform/coldfire/pci.c Greg Ungerer 2012-05-29 91
bbdea849ed6ba6 arch/m68k/platform/coldfire/pci.c Greg Ungerer 2012-05-29 92 static int mcf_pci_writeconfig(struct pci_bus *bus, unsigned int devfn,
bbdea849ed6ba6 arch/m68k/platform/coldfire/pci.c Greg Ungerer 2012-05-29 93 int where, int size, u32 value)
bbdea849ed6ba6 arch/m68k/platform/coldfire/pci.c Greg Ungerer 2012-05-29 94 {
bbdea849ed6ba6 arch/m68k/platform/coldfire/pci.c Greg Ungerer 2012-05-29 95 unsigned long addr;
bbdea849ed6ba6 arch/m68k/platform/coldfire/pci.c Greg Ungerer 2012-05-29 96
bbdea849ed6ba6 arch/m68k/platform/coldfire/pci.c Greg Ungerer 2012-05-29 97 if (bus->number == 0) {
bbdea849ed6ba6 arch/m68k/platform/coldfire/pci.c Greg Ungerer 2012-05-29 98 if (mcf_host_slot2sid[PCI_SLOT(devfn)] == 0)
bbdea849ed6ba6 arch/m68k/platform/coldfire/pci.c Greg Ungerer 2012-05-29 99 return PCIBIOS_SUCCESSFUL;
bbdea849ed6ba6 arch/m68k/platform/coldfire/pci.c Greg Ungerer 2012-05-29 100 }
bbdea849ed6ba6 arch/m68k/platform/coldfire/pci.c Greg Ungerer 2012-05-29 101
bbdea849ed6ba6 arch/m68k/platform/coldfire/pci.c Greg Ungerer 2012-05-29 102 addr = mcf_mk_pcicar(bus->number, devfn, where);
bbdea849ed6ba6 arch/m68k/platform/coldfire/pci.c Greg Ungerer 2012-05-29 103 __raw_writel(PCICAR_E | addr, PCICAR);
082f55c4598450 arch/m68k/coldfire/pci.c Greg Ungerer 2018-04-11 104 __raw_readl(PCICAR);
bbdea849ed6ba6 arch/m68k/platform/coldfire/pci.c Greg Ungerer 2012-05-29 105 addr = iospace + (where & 0x3);
bbdea849ed6ba6 arch/m68k/platform/coldfire/pci.c Greg Ungerer 2012-05-29 106
bbdea849ed6ba6 arch/m68k/platform/coldfire/pci.c Greg Ungerer 2012-05-29 107 switch (size) {
bbdea849ed6ba6 arch/m68k/platform/coldfire/pci.c Greg Ungerer 2012-05-29 108 case 1:
bbdea849ed6ba6 arch/m68k/platform/coldfire/pci.c Greg Ungerer 2012-05-29 109 __raw_writeb(value, addr);
bbdea849ed6ba6 arch/m68k/platform/coldfire/pci.c Greg Ungerer 2012-05-29 110 break;
bbdea849ed6ba6 arch/m68k/platform/coldfire/pci.c Greg Ungerer 2012-05-29 111 case 2:
bbdea849ed6ba6 arch/m68k/platform/coldfire/pci.c Greg Ungerer 2012-05-29 112 __raw_writew(cpu_to_le16(value), addr);
bbdea849ed6ba6 arch/m68k/platform/coldfire/pci.c Greg Ungerer 2012-05-29 113 break;
bbdea849ed6ba6 arch/m68k/platform/coldfire/pci.c Greg Ungerer 2012-05-29 114 default:
bbdea849ed6ba6 arch/m68k/platform/coldfire/pci.c Greg Ungerer 2012-05-29 @115 __raw_writel(cpu_to_le32(value), addr);
bbdea849ed6ba6 arch/m68k/platform/coldfire/pci.c Greg Ungerer 2012-05-29 116 break;
bbdea849ed6ba6 arch/m68k/platform/coldfire/pci.c Greg Ungerer 2012-05-29 117 }
bbdea849ed6ba6 arch/m68k/platform/coldfire/pci.c Greg Ungerer 2012-05-29 118
bbdea849ed6ba6 arch/m68k/platform/coldfire/pci.c Greg Ungerer 2012-05-29 119 __raw_writel(0, PCICAR);
082f55c4598450 arch/m68k/coldfire/pci.c Greg Ungerer 2018-04-11 120 __raw_readl(PCICAR);
bbdea849ed6ba6 arch/m68k/platform/coldfire/pci.c Greg Ungerer 2012-05-29 121 return PCIBIOS_SUCCESSFUL;
bbdea849ed6ba6 arch/m68k/platform/coldfire/pci.c Greg Ungerer 2012-05-29 122 }
bbdea849ed6ba6 arch/m68k/platform/coldfire/pci.c Greg Ungerer 2012-05-29 123

:::::: The code at line 115 was first introduced by commit
:::::: bbdea849ed6ba694cf1f56801b90f100685e3aa0 m68k: add PCI bus code support for the ColdFire M54xx SoC family

:::::: TO: Greg Ungerer <gerg@xxxxxxxxxxx>
:::::: CC: Greg Ungerer <gerg@xxxxxxxxxxx>

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

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Next message: Carlis: "[PATCH] drm: sysfs: convert sysfs snprintf to sysfs_emit"
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