static int parse_ofpart_partitions(struct mtd_info *master, struct mtd_partition **pparts, struct mtd_part_parser_data *data) { struct device_node *node; const char *partname; struct device_node *pp; int nr_parts, i; if (!data) return 0; node = data->of_node; if (!node) return 0; /* First count the subnodes */ nr_parts = 0; for_each_child_of_node(node, pp) { if (node_has_compatible(pp)) continue; nr_parts++; } if (nr_parts == 0) return 0; *pparts = kzalloc(nr_parts * sizeof(**pparts), GFP_KERNEL); if (!*pparts) return -ENOMEM; i = 0; for_each_child_of_node(node, pp) { const __be32 *reg; int len; int a_cells, s_cells; if (node_has_compatible(pp)) continue; reg = of_get_property(pp, "reg", &len); if (!reg) { nr_parts--; continue; } a_cells = of_n_addr_cells(pp); s_cells = of_n_size_cells(pp); (*pparts)[i].offset = of_read_number(reg, a_cells); (*pparts)[i].size = of_read_number(reg + a_cells, s_cells); partname = of_get_property(pp, "label", &len); if (!partname) partname = of_get_property(pp, "name", &len); (*pparts)[i].name = (char *)partname; if (of_get_property(pp, "read-only", &len)) (*pparts)[i].mask_flags |= MTD_WRITEABLE; if (of_get_property(pp, "lock", &len)) (*pparts)[i].mask_flags |= MTD_POWERUP_LOCK; i++; } if (!i) { of_node_put(pp); pr_err("No valid partition found on %s\n", node->full_name); kfree(*pparts); *pparts = NULL; return -EINVAL; } return nr_parts; }
static int parse_ofpart_partitions(struct mtd_info *master, struct mtd_partition **pparts, struct mtd_part_parser_data *data) { struct device_node *mtd_node; struct device_node *ofpart_node; const char *partname; struct device_node *pp; int nr_parts, i, ret = 0; bool dedicated = true; if (!data) return 0; mtd_node = data->of_node; if (!mtd_node) return 0; ofpart_node = of_get_child_by_name(mtd_node, "partitions"); if (!ofpart_node) { pr_warn("%s: 'partitions' subnode not found on %s. Trying to parse direct subnodes as partitions.\n", master->name, mtd_node->full_name); ofpart_node = mtd_node; dedicated = false; } /* First count the subnodes */ nr_parts = 0; for_each_child_of_node(ofpart_node, pp) { if (!dedicated && node_has_compatible(pp)) continue; nr_parts++; } if (nr_parts == 0) return 0; *pparts = kzalloc(nr_parts * sizeof(**pparts), GFP_KERNEL); if (!*pparts) return -ENOMEM; i = 0; for_each_child_of_node(ofpart_node, pp) { const __be32 *reg; int len; int a_cells, s_cells; if (!dedicated && node_has_compatible(pp)) continue; reg = of_get_property(pp, "reg", &len); if (!reg) { if (dedicated) { pr_debug("%s: ofpart partition %s (%s) missing reg property.\n", master->name, pp->full_name, mtd_node->full_name); goto ofpart_fail; } else { nr_parts--; continue; } } a_cells = of_n_addr_cells(pp); s_cells = of_n_size_cells(pp); if (len / 4 != a_cells + s_cells) { pr_debug("%s: ofpart partition %s (%s) error parsing reg property.\n", master->name, pp->full_name, mtd_node->full_name); goto ofpart_fail; } (*pparts)[i].offset = of_read_number(reg, a_cells); (*pparts)[i].size = of_read_number(reg + a_cells, s_cells); partname = of_get_property(pp, "label", &len); if (!partname) partname = of_get_property(pp, "name", &len); (*pparts)[i].name = partname; if (of_get_property(pp, "read-only", &len)) (*pparts)[i].mask_flags |= MTD_WRITEABLE; if (of_get_property(pp, "lock", &len)) (*pparts)[i].mask_flags |= MTD_POWERUP_LOCK; i++; } if (!nr_parts) goto ofpart_none; return nr_parts; ofpart_fail: pr_err("%s: error parsing ofpart partition %s (%s)\n", master->name, pp->full_name, mtd_node->full_name); ret = -EINVAL; ofpart_none: of_node_put(pp); kfree(*pparts); *pparts = NULL; return ret; }