Function fdt_next_node

components/drivers/ofw/libfdt/fdt.c:247–285

}

int fdt_next_node(const void *fdt, int offset, int *depth)
{
    int nextoffset = 0;
    uint32_t tag;

    if (offset >= 0)
        if ((nextoffset = fdt_check_node_offset_(fdt, offset)) < 0)
            return nextoffset;

    do {
        offset = nextoffset;
        tag = fdt_next_tag(fdt, offset, &nextoffset);

        switch (tag) {
        case FDT_PROP:
        case FDT_NOP:
            break;

        case FDT_BEGIN_NODE:
            if (depth)
                (*depth)++;
            break;

        case FDT_END_NODE:
            if (depth && ((--(*depth)) < 0))
                return nextoffset;
            break;

        case FDT_END:
            if ((nextoffset >= 0)
                || ((nextoffset == -FDT_ERR_TRUNCATED) && !depth))
                return -FDT_ERR_NOTFOUND;
            else
                return nextoffset;
        }
    } while (tag != FDT_BEGIN_NODE);

    return offset;
}

int fdt_first_subnode(const void *fdt, int offset)
{