77 const void *fdt_offset_ptr(const void *fdt, int offset, int len)  in fdt_offset_ptr()  argument
82 		if (((offset + len) < offset)  in fdt_offset_ptr()
83 		    || ((offset + len) > fdt_size_dt_struct(fdt)))  in fdt_offset_ptr()
86 	p = _fdt_offset_ptr(fdt, offset);  in fdt_offset_ptr()
93 uint32_t fdt_next_tag(const void *fdt, int offset, int *nextoffset)  in fdt_next_tag()  argument
99 	if (offset % FDT_TAGSIZE)  in fdt_next_tag()
102 	tagp = fdt_offset_ptr(fdt, offset, FDT_TAGSIZE);  in fdt_next_tag()
106 	offset += FDT_TAGSIZE;  in fdt_next_tag()
112 			p = fdt_offset_ptr(fdt, offset++, 1);  in fdt_next_tag()
118 		lenp = fdt_offset_ptr(fdt, offset, sizeof(*lenp));  in fdt_next_tag()
122 		offset += 2*FDT_TAGSIZE + fdt32_to_cpu(*lenp);  in fdt_next_tag()
127 		*nextoffset = FDT_TAGALIGN(offset);  in fdt_next_tag()
132 int _fdt_check_node_offset(const void *fdt, int offset)  in _fdt_check_node_offset()  argument
134 	if ((offset < 0) || (offset % FDT_TAGSIZE)  in _fdt_check_node_offset()
135 	    || (fdt_next_tag(fdt, offset, &offset) != FDT_BEGIN_NODE))  in _fdt_check_node_offset()
138 	return offset;  in _fdt_check_node_offset()
141 int fdt_next_node(const void *fdt, int offset, int *depth)  in fdt_next_node()  argument
146 	if (offset >= 0)  in fdt_next_node()
147 		if ((nextoffset = _fdt_check_node_offset(fdt, offset)) < 0)  in fdt_next_node()
151 		offset = nextoffset;  in fdt_next_node()
152 		tag = fdt_next_tag(fdt, offset, &nextoffset);  in fdt_next_node()
177 	return offset;  in fdt_next_node()