From ac9bcefa3b044bf556af37a4c6b06e350a3d43c2 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= Date: Wed, 14 Mar 2018 15:07:03 +0100 Subject: kernel: use V10 of mtd patchset adding support for "compatible" string MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit In the commit bde5e7a632ef0 ("kernel: backport mtd implementation for "compatible" in "partitions" subnode") patches that got accepted into l2-mtd.git were backported to the kernels 4.9 and 4.14. Unfortunately there was a regression report, patches were dropped and never reached 4.16. This commit replaces these pseudo-backports with the latest version that includes regression fix and futher changes that were requested. Signed-off-by: Rafał Miłecki --- ...itions-add-of_match_table-parser-matching.patch | 121 --------------------- ...-add-of_match_table-with-fixed-partitions.patch | 43 -------- 2 files changed, 164 deletions(-) delete mode 100644 target/linux/generic/backport-4.14/041-v4.16-0001-mtd-partitions-add-of_match_table-parser-matching.patch delete mode 100644 target/linux/generic/backport-4.14/041-v4.16-0002-mtd-ofpart-add-of_match_table-with-fixed-partitions.patch (limited to 'target/linux/generic/backport-4.14') diff --git a/target/linux/generic/backport-4.14/041-v4.16-0001-mtd-partitions-add-of_match_table-parser-matching.patch b/target/linux/generic/backport-4.14/041-v4.16-0001-mtd-partitions-add-of_match_table-parser-matching.patch deleted file mode 100644 index d698821f3c..0000000000 --- a/target/linux/generic/backport-4.14/041-v4.16-0001-mtd-partitions-add-of_match_table-parser-matching.patch +++ /dev/null @@ -1,121 +0,0 @@ -From bb2192123ec70470d6ea33f138846b175403a968 Mon Sep 17 00:00:00 2001 -From: Brian Norris -Date: Thu, 4 Jan 2018 08:05:33 +0100 -Subject: [PATCH] mtd: partitions: add of_match_table parser matching -MIME-Version: 1.0 -Content-Type: text/plain; charset=UTF-8 -Content-Transfer-Encoding: 8bit - -Partition parsers can now provide an of_match_table to enable -flash<-->parser matching via device tree as documented in the -mtd/partition.txt. - -It works by looking for a matching parser for every string in the -"compatibility" property (starting with the most specific one). - -This support is currently limited to built-in parsers as it uses -request_module() and friends. This should be sufficient for most cases -though as compiling parsers as modules isn't a common choice. - -Signed-off-by: Brian Norris -Signed-off-by: Rafał Miłecki -Signed-off-by: Boris Brezillon ---- - drivers/mtd/mtdpart.c | 59 ++++++++++++++++++++++++++++++++++++++++++ - include/linux/mtd/partitions.h | 1 + - 2 files changed, 60 insertions(+) - ---- a/drivers/mtd/mtdpart.c -+++ b/drivers/mtd/mtdpart.c -@@ -30,6 +30,7 @@ - #include - #include - #include -+#include - - #include "mtdcore.h" - -@@ -894,6 +895,45 @@ static int mtd_part_do_parse(struct mtd_ - } - - /** -+ * mtd_part_get_compatible_parser - find MTD parser by a compatible string -+ * -+ * @compat: compatible string describing partitions in a device tree -+ * -+ * MTD parsers can specify supported partitions by providing a table of -+ * compatibility strings. This function finds a parser that advertises support -+ * for a passed value of "compatible". -+ */ -+static struct mtd_part_parser *mtd_part_get_compatible_parser(const char *compat) -+{ -+ struct mtd_part_parser *p, *ret = NULL; -+ -+ spin_lock(&part_parser_lock); -+ -+ list_for_each_entry(p, &part_parsers, list) { -+ const struct of_device_id *matches; -+ -+ matches = p->of_match_table; -+ if (!matches) -+ continue; -+ -+ for (; matches->compatible[0]; matches++) { -+ if (!strcmp(matches->compatible, compat) && -+ try_module_get(p->owner)) { -+ ret = p; -+ break; -+ } -+ } -+ -+ if (ret) -+ break; -+ } -+ -+ spin_unlock(&part_parser_lock); -+ -+ return ret; -+} -+ -+/** - * parse_mtd_partitions - parse MTD partitions - * @master: the master partition (describes whole MTD device) - * @types: names of partition parsers to try or %NULL -@@ -919,8 +959,27 @@ int parse_mtd_partitions(struct mtd_info - struct mtd_part_parser_data *data) - { - struct mtd_part_parser *parser; -+ struct device_node *np; -+ struct property *prop; -+ const char *compat; - int ret, err = 0; - -+ np = of_get_child_by_name(mtd_get_of_node(master), "partitions"); -+ of_property_for_each_string(np, "compatible", prop, compat) { -+ parser = mtd_part_get_compatible_parser(compat); -+ if (!parser) -+ continue; -+ ret = mtd_part_do_parse(parser, master, pparts, data); -+ if (ret > 0) { -+ of_node_put(np); -+ return 0; -+ } -+ mtd_part_parser_put(parser); -+ if (ret < 0 && !err) -+ err = ret; -+ } -+ of_node_put(np); -+ - if (!types) - types = default_mtd_part_types; - ---- a/include/linux/mtd/partitions.h -+++ b/include/linux/mtd/partitions.h -@@ -77,6 +77,7 @@ struct mtd_part_parser { - struct list_head list; - struct module *owner; - const char *name; -+ const struct of_device_id *of_match_table; - int (*parse_fn)(struct mtd_info *, const struct mtd_partition **, - struct mtd_part_parser_data *); - void (*cleanup)(const struct mtd_partition *pparts, int nr_parts); diff --git a/target/linux/generic/backport-4.14/041-v4.16-0002-mtd-ofpart-add-of_match_table-with-fixed-partitions.patch b/target/linux/generic/backport-4.14/041-v4.16-0002-mtd-ofpart-add-of_match_table-with-fixed-partitions.patch deleted file mode 100644 index 2092cc28fd..0000000000 --- a/target/linux/generic/backport-4.14/041-v4.16-0002-mtd-ofpart-add-of_match_table-with-fixed-partitions.patch +++ /dev/null @@ -1,43 +0,0 @@ -From 4ac9222778478a00c7fc9d347b7ed1e0e595120d Mon Sep 17 00:00:00 2001 -From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= -Date: Thu, 4 Jan 2018 08:05:34 +0100 -Subject: [PATCH] mtd: ofpart: add of_match_table with "fixed-partitions" -MIME-Version: 1.0 -Content-Type: text/plain; charset=UTF-8 -Content-Transfer-Encoding: 8bit - -This allows using this parser with any flash driver that takes care of -setting of_node (using mtd_set_of_node helper) correctly. Up to now -support for "fixed-partitions" DT compatibility string was working only -with flash drivers that were specifying "ofpart" (manually or by letting -mtd use the default set of parsers). - -This matches existing bindings documentation. - -Signed-off-by: Rafał Miłecki -Reviewed-by: Brian Norris -Tested-by: Brian Norris -Signed-off-by: Boris Brezillon ---- - drivers/mtd/ofpart.c | 7 +++++++ - 1 file changed, 7 insertions(+) - ---- a/drivers/mtd/ofpart.c -+++ b/drivers/mtd/ofpart.c -@@ -140,9 +140,16 @@ ofpart_none: - return ret; - } - -+static const struct of_device_id parse_ofpart_match_table[] = { -+ { .compatible = "fixed-partitions" }, -+ {}, -+}; -+MODULE_DEVICE_TABLE(of, parse_ofpart_match_table); -+ - static struct mtd_part_parser ofpart_parser = { - .parse_fn = parse_ofpart_partitions, - .name = "ofpart", -+ .of_match_table = parse_ofpart_match_table, - }; - - static int parse_ofoldpart_partitions(struct mtd_info *master, -- cgit v1.2.3