tree: https://github.com/morimoto/linux fw-cleanup-2020-07-09-v1 head: b6ce46d5bd82ed9e6f7697fe07c9008228d2058a commit: 17eb06074ab158f22283e9371300d07a5c2f234b [67/132] sh: clkfwk: remove r8/r16/r32 config: sh-randconfig-s032-20200709 (attached as .config) compiler: sh4-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: v0.6.2-37-gc9676a3b-dirty git checkout 17eb06074ab158f22283e9371300d07a5c2f234b # 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=sh If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; sparse warnings: (new ones prefixed by >>) 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) 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@lists.01.org