Messages in this thread | | | Date | Thu, 30 Jul 2020 09:39:40 +0800 | From | kernel test robot <> | Subject | arch/riscv/include/asm/timex.h:42:16: sparse: sparse: cast removes address space '__iomem' of expression |
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tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: d3590ebf6f91350192737dd1d1b219c05277f067 commit: 670d0a4b10704667765f7d18f7592993d02783aa sparse: use identifiers to define address spaces date: 6 weeks ago config: riscv-randconfig-s031-20200729 (attached as .config) compiler: riscv32-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: v0.6.2-97-gee4aea9a-dirty git checkout 670d0a4b10704667765f7d18f7592993d02783aa # 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=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/clocksource/timer-riscv.c: note: in included file (through include/linux/timex.h, include/linux/clocksource.h): >> arch/riscv/include/asm/timex.h:42:16: sparse: sparse: cast removes address space '__iomem' of expression >> arch/riscv/include/asm/timex.h:42:16: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *addr @@ got unsigned int [usertype] * @@ >> arch/riscv/include/asm/timex.h:42:16: sparse: expected void const volatile [noderef] __iomem *addr arch/riscv/include/asm/timex.h:42:16: sparse: got unsigned int [usertype] * >> arch/riscv/include/asm/timex.h:42:16: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *addr @@ got unsigned int [usertype] * @@ >> arch/riscv/include/asm/timex.h:42:16: sparse: expected void const volatile [noderef] __iomem *addr arch/riscv/include/asm/timex.h:42:16: sparse: got unsigned int [usertype] * >> arch/riscv/include/asm/timex.h:42:16: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *addr @@ got unsigned int [usertype] * @@ >> arch/riscv/include/asm/timex.h:42:16: sparse: expected void const volatile [noderef] __iomem *addr arch/riscv/include/asm/timex.h:42:16: sparse: got unsigned int [usertype] * >> arch/riscv/include/asm/timex.h:42:16: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *addr @@ got unsigned int [usertype] * @@ >> arch/riscv/include/asm/timex.h:42:16: sparse: expected void const volatile [noderef] __iomem *addr arch/riscv/include/asm/timex.h:42:16: sparse: got unsigned int [usertype] * >> arch/riscv/include/asm/timex.h:42:16: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *addr @@ got unsigned int [usertype] * @@ >> arch/riscv/include/asm/timex.h:42:16: sparse: expected void const volatile [noderef] __iomem *addr arch/riscv/include/asm/timex.h:42:16: sparse: got unsigned int [usertype] * >> arch/riscv/include/asm/timex.h:42:16: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *addr @@ got unsigned int [usertype] * @@ >> arch/riscv/include/asm/timex.h:42:16: sparse: expected void const volatile [noderef] __iomem *addr arch/riscv/include/asm/timex.h:42:16: sparse: got unsigned int [usertype] * >> arch/riscv/include/asm/timex.h:42:16: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *addr @@ got unsigned int [usertype] * @@ >> arch/riscv/include/asm/timex.h:42:16: sparse: expected void const volatile [noderef] __iomem *addr arch/riscv/include/asm/timex.h:42:16: sparse: got unsigned int [usertype] * >> arch/riscv/include/asm/timex.h:42:16: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *addr @@ got unsigned int [usertype] * @@ >> arch/riscv/include/asm/timex.h:42:16: sparse: expected void const volatile [noderef] __iomem *addr arch/riscv/include/asm/timex.h:42:16: sparse: got unsigned int [usertype] *
vim +/__iomem +42 arch/riscv/include/asm/timex.h
6d60b6ee0c9777b Palmer Dabbelt 2017-07-10 31 6d60b6ee0c9777b Palmer Dabbelt 2017-07-10 32 #ifdef CONFIG_64BIT 2f12dbf190d97dc Christoph Hellwig 2019-08-21 33 static inline u64 get_cycles64(void) 6d60b6ee0c9777b Palmer Dabbelt 2017-07-10 34 { 6d60b6ee0c9777b Palmer Dabbelt 2017-07-10 35 return get_cycles(); 6d60b6ee0c9777b Palmer Dabbelt 2017-07-10 36 } 2f12dbf190d97dc Christoph Hellwig 2019-08-21 37 #else /* CONFIG_64BIT */ 2f12dbf190d97dc Christoph Hellwig 2019-08-21 38 static inline u32 get_cycles_hi(void) 2f12dbf190d97dc Christoph Hellwig 2019-08-21 39 { 4f9bbcefa142862 Christoph Hellwig 2019-10-28 40 if (IS_ENABLED(CONFIG_RISCV_SBI)) 2f12dbf190d97dc Christoph Hellwig 2019-08-21 41 return csr_read(CSR_TIMEH); 4f9bbcefa142862 Christoph Hellwig 2019-10-28 @42 return mmio_get_cycles_hi(); 2f12dbf190d97dc Christoph Hellwig 2019-08-21 43 } 2f12dbf190d97dc Christoph Hellwig 2019-08-21 44
:::::: The code at line 42 was first introduced by commit :::::: 4f9bbcefa142862782275a4b29f390ca8d8b9242 riscv: add support for MMIO access to the timer registers
:::::: TO: Christoph Hellwig <hch@lst.de> :::::: CC: Paul Walmsley <paul.walmsley@sifive.com>
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