[morimoto-linux:fw-cleanup-2020-05-28-v1 117/181] drivers/sh/clk/cpg.c:49:30: sparse: sparse: incorrect type in assignment (incompatible argument 1 (different modifiers))

[morimoto-linux:fw-cleanup-2020-05-28-v1 117/181] drivers/sh/clk/cpg.c:49:30: sparse: sparse: incorrect type in assignment (incompatible argument 1 (different modifiers))

[kbuild test robot]

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tree:   https://github.com/morimoto/linux fw-cleanup-2020-05-28-v1
head:   009438df3f3df543e5ba26a9aed30bb019da68ac
commit: d59a9b29503f8584228715caba39c8004a7e23c3 [117/181] sh: clkfwk: remove r8/r16/r32
config: sh-randconfig-s031-20200529 (attached as .config)
compiler: sh4-linux-gcc (GCC) 9.3.0
reproduce:
        # apt-get install sparse
        # sparse version: v0.6.1-243-gc100a7ab-dirty
        git checkout d59a9b29503f8584228715caba39c8004a7e23c3
        # save the attached .config to linux build tree
        make W=1 C=1 ARCH=sh CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__'

If you fix the issue, kindly add following tag as appropriate
Reported-by: kbuild test robot <lkp@intel.com>


sparse warnings: (new ones prefixed by >>)

>> drivers/sh/clk/cpg.c:49:30: sparse: sparse: incorrect type in assignment (incompatible argument 1 (different modifiers)) @@     expected unsigned int ( *read )( ... ) @@     got unsigned int ( * )( ... ) @@
>> drivers/sh/clk/cpg.c:49:30: sparse:     expected unsigned int ( *read )( ... )
>> drivers/sh/clk/cpg.c:49:30: sparse:     got unsigned int ( * )( ... )
   drivers/sh/clk/cpg.c:51:30: sparse: sparse: incorrect type in assignment (incompatible argument 1 (different modifiers)) @@     expected unsigned int ( *read )( ... ) @@     got unsigned int ( * )( ... ) @@
   drivers/sh/clk/cpg.c:51:30: sparse:     expected unsigned int ( *read )( ... )
   drivers/sh/clk/cpg.c:51:30: sparse:     got unsigned int ( * )( ... )
   drivers/sh/clk/cpg.c:53:30: sparse: sparse: incorrect type in assignment (incompatible argument 1 (different modifiers)) @@     expected unsigned int ( *read )( ... ) @@     got unsigned int ( * )( ... ) @@
   drivers/sh/clk/cpg.c:53:30: sparse:     expected unsigned int ( *read )( ... )
   drivers/sh/clk/cpg.c:53:30: sparse:     got unsigned int ( * )( ... )
   drivers/sh/clk/cpg.c:469:43: sparse: sparse: Using plain integer as NULL pointer

vim +49 drivers/sh/clk/cpg.c

    38	
    39	static int sh_clk_mstp_enable(struct clk *clk)
    40	{
    41		sh_clk_write(sh_clk_read(clk) & ~(1 << clk->enable_bit), clk);
    42		if (clk->status_reg) {
    43			unsigned int (*read)(const void __iomem *addr);
    44			int i;
    45			void __iomem *mapped_status = (phys_addr_t)clk->status_reg -
    46				(phys_addr_t)clk->enable_reg + clk->mapped_reg;
    47	
    48			if (clk->flags & CLK_ENABLE_REG_8BIT)
  > 49				read = ioread8;
    50			else if (clk->flags & CLK_ENABLE_REG_16BIT)
    51				read = ioread16;
    52			else
    53				read = ioread32;
    54	
    55			for (i = 1000;
    56			     (read(mapped_status) & (1 << clk->enable_bit)) && i;
    57			     i--)
    58				cpu_relax();
    59			if (!i) {
    60				pr_err("cpg: failed to enable %p[%d]\n",
    61				       clk->enable_reg, clk->enable_bit);
    62				return -ETIMEDOUT;
    63			}
    64		}
    65		return 0;
    66	}
    67	

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

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