mtdpart.c (c42c2710d64381fd48d36b278e0744aa683d93fe) mtdpart.c (07fd2f871c5e3dfb8ff5eb9c4b44fdb4cf1aeff5)
1/*
2 * Simple MTD partitioning layer
3 *
4 * Copyright © 2000 Nicolas Pitre <nico@fluxnic.net>
5 * Copyright © 2002 Thomas Gleixner <gleixner@linutronix.de>
6 * Copyright © 2000-2010 David Woodhouse <dwmw2@infradead.org>
7 *
8 * This program is free software; you can redistribute it and/or modify

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738 "ofpart",
739 NULL
740};
741
742/**
743 * parse_mtd_partitions - parse MTD partitions
744 * @master: the master partition (describes whole MTD device)
745 * @types: names of partition parsers to try or %NULL
1/*
2 * Simple MTD partitioning layer
3 *
4 * Copyright © 2000 Nicolas Pitre <nico@fluxnic.net>
5 * Copyright © 2002 Thomas Gleixner <gleixner@linutronix.de>
6 * Copyright © 2000-2010 David Woodhouse <dwmw2@infradead.org>
7 *
8 * This program is free software; you can redistribute it and/or modify

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738 "ofpart",
739 NULL
740};
741
742/**
743 * parse_mtd_partitions - parse MTD partitions
744 * @master: the master partition (describes whole MTD device)
745 * @types: names of partition parsers to try or %NULL
746 * @pparts: array of partitions found is returned here
746 * @pparts: info about partitions found is returned here
747 * @data: MTD partition parser-specific data
748 *
749 * This function tries to find partition on MTD device @master. It uses MTD
750 * partition parsers, specified in @types. However, if @types is %NULL, then
751 * the default list of parsers is used. The default list contains only the
752 * "cmdlinepart" and "ofpart" parsers ATM.
753 * Note: If there are more then one parser in @types, the kernel only takes the
754 * partitions parsed out by the first parser.
755 *
756 * This function may return:
757 * o a negative error code in case of failure
747 * @data: MTD partition parser-specific data
748 *
749 * This function tries to find partition on MTD device @master. It uses MTD
750 * partition parsers, specified in @types. However, if @types is %NULL, then
751 * the default list of parsers is used. The default list contains only the
752 * "cmdlinepart" and "ofpart" parsers ATM.
753 * Note: If there are more then one parser in @types, the kernel only takes the
754 * partitions parsed out by the first parser.
755 *
756 * This function may return:
757 * o a negative error code in case of failure
758 * o zero if no partitions were found
759 * o a positive number of found partitions, in which case on exit @pparts will
760 * point to an array containing this number of &struct mtd_info objects.
758 * o zero otherwise, and @pparts will describe the partitions, number of
759 * partitions, and the parser which parsed them
761 */
762int parse_mtd_partitions(struct mtd_info *master, const char *const *types,
760 */
761int parse_mtd_partitions(struct mtd_info *master, const char *const *types,
763 const struct mtd_partition **pparts,
762 struct mtd_partitions *pparts,
764 struct mtd_part_parser_data *data)
765{
766 struct mtd_part_parser *parser;
767 int ret, err = 0;
768
769 if (!types)
770 types = default_mtd_part_types;
771
772 for ( ; *types; types++) {
773 pr_debug("%s: parsing partitions %s\n", master->name, *types);
774 parser = mtd_part_parser_get(*types);
775 if (!parser && !request_module("%s", *types))
776 parser = mtd_part_parser_get(*types);
777 pr_debug("%s: got parser %s\n", master->name,
778 parser ? parser->name : NULL);
779 if (!parser)
780 continue;
763 struct mtd_part_parser_data *data)
764{
765 struct mtd_part_parser *parser;
766 int ret, err = 0;
767
768 if (!types)
769 types = default_mtd_part_types;
770
771 for ( ; *types; types++) {
772 pr_debug("%s: parsing partitions %s\n", master->name, *types);
773 parser = mtd_part_parser_get(*types);
774 if (!parser && !request_module("%s", *types))
775 parser = mtd_part_parser_get(*types);
776 pr_debug("%s: got parser %s\n", master->name,
777 parser ? parser->name : NULL);
778 if (!parser)
779 continue;
781 ret = (*parser->parse_fn)(master, pparts, data);
780 ret = (*parser->parse_fn)(master, &pparts->parts, data);
782 pr_debug("%s: parser %s: %i\n",
783 master->name, parser->name, ret);
784 mtd_part_parser_put(parser);
785 if (ret > 0) {
786 printk(KERN_NOTICE "%d %s partitions found on MTD device %s\n",
787 ret, parser->name, master->name);
781 pr_debug("%s: parser %s: %i\n",
782 master->name, parser->name, ret);
783 mtd_part_parser_put(parser);
784 if (ret > 0) {
785 printk(KERN_NOTICE "%d %s partitions found on MTD device %s\n",
786 ret, parser->name, master->name);
788 return ret;
787 pparts->nr_parts = ret;
788 pparts->parser = parser;
789 return 0;
789 }
790 /*
791 * Stash the first error we see; only report it if no parser
792 * succeeds
793 */
794 if (ret < 0 && !err)
795 err = ret;
796 }

--- 29 unchanged lines hidden --- 		790 }
791 /*
792 * Stash the first error we see; only report it if no parser
793 * succeeds
794 */
795 if (ret < 0 && !err)
796 err = ret;
797 }

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