Hi Martin, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on robh/for-next] [also build test WARNING on linus/master v5.7-rc5 next-20200512] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system. BTW, we also suggest to use '--base' option to specify the base tree in git format-patch, please see https://stackoverflow.com/a/37406982] url: https://github.com/0day-ci/linux/commits/Martin-Blumenstingl/Amlogic-32-b... base: https://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git for-next reproduce: # apt-get install sparse # sparse version: v0.6.1-191-gc51a0382-dirty make ARCH=x86_64 allmodconfig make C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' If you fix the issue, kindly add following tag as appropriate Reported-by: kbuild test robot <lkp(a)intel.com&gt; sparse warnings: (new ones prefixed by >>) drivers/mmc/host/meson-mx-sdhc-clkc.c:87:47: sparse: sparse: Using plain integer as NULL pointer vim +56 drivers/mmc/host/meson-mx-sdhc-clkc.c 48 49 static int meson_mx_sdhc_clk_hw_register(struct device *dev, 50 const char *name_suffix, 51 const struct clk_parent_data *parents, 52 unsigned int num_parents, 53 const struct clk_ops *ops, 54 struct clk_hw *hw) 55 { 57 char clk_name[32]; 58 59 snprintf(clk_name, sizeof(clk_name), "%s#%s", dev_name(dev), 60 name_suffix); 61 62 init.name = clk_name; 63 init.ops = ops; 64 init.flags = CLK_SET_RATE_PARENT; 65 init.parent_data = parents; 66 init.num_parents = num_parents; 67 68 hw->init = &init; 69 70 return devm_clk_hw_register(dev, hw); 71 } 72 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org