Hi Frank, I love your patch! Yet something to improve: [auto build test ERROR on robh/for-next] [also build test ERROR on v4.16-rc1 next-20180216] [cannot apply to glikely/devicetree/next] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url: https://github.com/0day-ci/linux/commits/frowand-list-gmail-com/of-change-overlay-apply-input-data-from-unflattened/20180218-095108 base: https://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git for-next config: i386-randconfig-x018-201807 (attached as .config) compiler: gcc-7 (Debian 7.3.0-1) 7.3.0 reproduce: # save the attached .config to linux build tree make ARCH=i386 All errors (new ones prefixed by >>): drivers/of/overlay.c: In function 'of_overlay_fdt_apply': >> drivers/of/overlay.c:832:2: error: implicit declaration of function 'of_fdt_unflatten_tree' [-Werror=implicit-function-declaration] of_fdt_unflatten_tree(new_fdt, NULL, &overlay_root); ^~~~~~~~~~~~~~~~~~~~~ cc1: some warnings being treated as errors vim +/of_fdt_unflatten_tree +832 drivers/of/overlay.c 806 807 int of_overlay_fdt_apply(void *overlay_fdt, int *ovcs_id) 808 { 809 const void *new_fdt; 810 int ret; 811 u32 size; 812 struct device_node *overlay_root; 813 814 *ovcs_id = 0; 815 ret = 0; 816 817 if (fdt_check_header(overlay_fdt)) { 818 pr_err("Invalid overlay_fdt header\n"); 819 return -EINVAL; 820 } 821 822 size = fdt_totalsize(overlay_fdt); 823 824 /* 825 * Must create permanent copy of FDT because of_fdt_unflatten_tree() 826 * will create pointers to the passed in FDT in the unflattened tree. 827 */ 828 new_fdt = kmemdup(overlay_fdt, size, GFP_KERNEL); 829 if (!new_fdt) 830 return -ENOMEM; 831 > 832 of_fdt_unflatten_tree(new_fdt, NULL, &overlay_root); 833 if (!overlay_root) { 834 pr_err("unable to unflatten overlay_fdt\n"); 835 ret = -EINVAL; 836 goto out_free_new_fdt; 837 } 838 839 ret = of_overlay_apply(new_fdt, overlay_root, ovcs_id); 840 if (ret < 0) { 841 /* 842 * new_fdt and overlay_root now belong to the overlay 843 * changeset. 844 * overlay changeset code is responsible for freeing them. 845 */ 846 goto out; 847 } 848 849 return 0; 850 851 852 out_free_new_fdt: 853 kfree(new_fdt); 854 855 out: 856 return ret; 857 } 858 EXPORT_SYMBOL_GPL(of_overlay_fdt_apply); 859 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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