+++ /dev/null
-From bb2192123ec70470d6ea33f138846b175403a968 Mon Sep 17 00:00:00 2001
-From: Brian Norris <computersforpeace@gmail.com>
-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 <computersforpeace@gmail.com>
-Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
-Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
----
- 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 <linux/mtd/mtd.h>
- #include <linux/mtd/partitions.h>
- #include <linux/err.h>
-+#include <linux/of.h>
-
- #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);
+++ /dev/null
-From 4ac9222778478a00c7fc9d347b7ed1e0e595120d Mon Sep 17 00:00:00 2001
-From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
-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 <rafal@milecki.pl>
-Reviewed-by: Brian Norris <computersforpeace@gmail.com>
-Tested-by: Brian Norris <computersforpeace@gmail.com>
-Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
----
- 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,
+++ /dev/null
-From bb2192123ec70470d6ea33f138846b175403a968 Mon Sep 17 00:00:00 2001
-From: Brian Norris <computersforpeace@gmail.com>
-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 <computersforpeace@gmail.com>
-Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
-Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
----
- 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 <linux/mtd/mtd.h>
- #include <linux/mtd/partitions.h>
- #include <linux/err.h>
-+#include <linux/of.h>
-
- #include "mtdcore.h"
-
-@@ -886,6 +887,45 @@ 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
-@@ -911,8 +951,27 @@ 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);
+++ /dev/null
-From 4ac9222778478a00c7fc9d347b7ed1e0e595120d Mon Sep 17 00:00:00 2001
-From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
-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 <rafal@milecki.pl>
-Reviewed-by: Brian Norris <computersforpeace@gmail.com>
-Tested-by: Brian Norris <computersforpeace@gmail.com>
-Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
----
- 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,
--- /dev/null
+From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
+Date: Tue, 30 Jan 2018 11:55:16 +0100
+Subject: [PATCH V10 1/3] mtd: partitions: add of_match_table parser matching
+ for the "ofpart" type
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+In order to properly support compatibility strings as described in the
+bindings/mtd/partition.txt "ofpart" type should be treated as an
+indication for looking into OF. MTD should check "compatible" property
+and search for a matching parser rather than blindly trying the one
+supporting "fixed-partitions".
+
+It also means that existing "fixed-partitions" parser should get renamed
+to use a more meaningful name.
+
+This commit achievies that aim by introducing a new mtd_part_of_parse().
+It works by looking for a matching parser for every string in the
+"compatibility" property (starting with the most specific one).
+
+Please note that driver-specified parsers still take a precedence. It's
+assumed that driver providing a parser type has a good reason for that
+(e.g. having platform data with device-specific info). Also doing
+otherwise could break existing setups. The same applies to using default
+parsers (including "cmdlinepart") as some overwrite DT data with cmdline
+argument.
+
+Partition parsers can now provide an of_match_table to enable
+flash<-->parser matching via device tree as documented in the
+mtd/partition.txt.
+
+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 <computersforpeace@gmail.com>
+Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
+Tested-by: Peter Rosin <peda@axentia.se>
+---
+
+--- a/drivers/mtd/mtdpart.c
++++ b/drivers/mtd/mtdpart.c
+@@ -30,6 +30,7 @@
+ #include <linux/mtd/mtd.h>
+ #include <linux/mtd/partitions.h>
+ #include <linux/err.h>
++#include <linux/of.h>
+
+ #include "mtdcore.h"
+
+@@ -894,6 +895,92 @@ 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;
++}
++
++static int mtd_part_of_parse(struct mtd_info *master,
++ struct mtd_partitions *pparts)
++{
++ struct mtd_part_parser *parser;
++ struct device_node *np;
++ struct property *prop;
++ const char *compat;
++ const char *fixed = "ofpart";
++ 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, NULL);
++ if (ret > 0) {
++ of_node_put(np);
++ return ret;
++ }
++ mtd_part_parser_put(parser);
++ if (ret < 0 && !err)
++ err = ret;
++ }
++ of_node_put(np);
++
++ /*
++ * For backward compatibility we have to try the "ofpart"
++ * parser. It supports old DT format with partitions specified as a
++ * direct subnodes of a flash device DT node without any compatibility
++ * specified we could match.
++ */
++ parser = mtd_part_parser_get(fixed);
++ if (!parser && !request_module("%s", fixed))
++ parser = mtd_part_parser_get(fixed);
++ if (parser) {
++ ret = mtd_part_do_parse(parser, master, pparts, NULL);
++ if (ret > 0)
++ return ret;
++ mtd_part_parser_put(parser);
++ if (ret < 0 && !err)
++ err = ret;
++ }
++
++ return err;
++}
++
++/**
+ * parse_mtd_partitions - parse MTD partitions
+ * @master: the master partition (describes whole MTD device)
+ * @types: names of partition parsers to try or %NULL
+@@ -925,19 +1012,30 @@ int parse_mtd_partitions(struct mtd_info
+ types = default_mtd_part_types;
+
+ for ( ; *types; types++) {
+- pr_debug("%s: parsing partitions %s\n", master->name, *types);
+- parser = mtd_part_parser_get(*types);
+- if (!parser && !request_module("%s", *types))
++ /*
++ * ofpart is a special type that means OF partitioning info
++ * should be used. It requires a bit different logic so it is
++ * handled in a separated function.
++ */
++ if (!strcmp(*types, "ofpart")) {
++ ret = mtd_part_of_parse(master, pparts);
++ } else {
++ pr_debug("%s: parsing partitions %s\n", master->name,
++ *types);
+ parser = mtd_part_parser_get(*types);
+- pr_debug("%s: got parser %s\n", master->name,
+- parser ? parser->name : NULL);
+- if (!parser)
+- continue;
+- ret = mtd_part_do_parse(parser, master, pparts, data);
++ if (!parser && !request_module("%s", *types))
++ parser = mtd_part_parser_get(*types);
++ pr_debug("%s: got parser %s\n", master->name,
++ parser ? parser->name : NULL);
++ if (!parser)
++ continue;
++ ret = mtd_part_do_parse(parser, master, pparts, data);
++ if (ret <= 0)
++ mtd_part_parser_put(parser);
++ }
+ /* Found partitions! */
+ if (ret > 0)
+ return 0;
+- mtd_part_parser_put(parser);
+ /*
+ * Stash the first error we see; only report it if no parser
+ * succeeds
+--- 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);
--- /dev/null
+From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
+Date: Tue, 30 Jan 2018 12:09:58 +0100
+Subject: [PATCH V10 2/3] mtd: rename "ofpart" parser to "fixed-partitions" as
+ it fits it better
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Type "ofpart" means that OF should be used to get partitioning info and
+this driver supports "fixed-partitions" binding only. Renaming it should
+lead to less confusion especially when parsers for new compatibility
+strings start to appear.
+
+Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
+---
+
+--- a/drivers/mtd/mtdpart.c
++++ b/drivers/mtd/mtdpart.c
+@@ -940,7 +940,7 @@ static int mtd_part_of_parse(struct mtd_
+ struct device_node *np;
+ struct property *prop;
+ const char *compat;
+- const char *fixed = "ofpart";
++ const char *fixed = "fixed-partitions";
+ int ret, err = 0;
+
+ np = of_get_child_by_name(mtd_get_of_node(master), "partitions");
+@@ -960,7 +960,7 @@ static int mtd_part_of_parse(struct mtd_
+ of_node_put(np);
+
+ /*
+- * For backward compatibility we have to try the "ofpart"
++ * For backward compatibility we have to try the "fixed-partitions"
+ * parser. It supports old DT format with partitions specified as a
+ * direct subnodes of a flash device DT node without any compatibility
+ * specified we could match.
+--- a/drivers/mtd/ofpart.c
++++ b/drivers/mtd/ofpart.c
+@@ -25,9 +25,9 @@ static bool node_has_compatible(struct d
+ return of_get_property(pp, "compatible", NULL);
+ }
+
+-static int parse_ofpart_partitions(struct mtd_info *master,
+- const struct mtd_partition **pparts,
+- struct mtd_part_parser_data *data)
++static int parse_fixed_partitions(struct mtd_info *master,
++ const struct mtd_partition **pparts,
++ struct mtd_part_parser_data *data)
+ {
+ struct mtd_partition *parts;
+ struct device_node *mtd_node;
+@@ -141,8 +141,8 @@ ofpart_none:
+ }
+
+ static struct mtd_part_parser ofpart_parser = {
+- .parse_fn = parse_ofpart_partitions,
+- .name = "ofpart",
++ .parse_fn = parse_fixed_partitions,
++ .name = "fixed-partitions",
+ };
+
+ static int parse_ofoldpart_partitions(struct mtd_info *master,
+@@ -229,4 +229,5 @@ MODULE_AUTHOR("Vitaly Wool, David Gibson
+ * with the same name. Since we provide the ofoldpart parser, we should have
+ * the corresponding alias.
+ */
++MODULE_ALIAS("fixed-partitions");
+ MODULE_ALIAS("ofoldpart");
--- /dev/null
+From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
+Date: Thu, 4 Jan 2018 08:05:34 +0100
+Subject: [PATCH V10 3/3] 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 <rafal@milecki.pl>
+Reviewed-by: Brian Norris <computersforpeace@gmail.com>
+Tested-by: Brian Norris <computersforpeace@gmail.com>
+---
+
+--- 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_fixed_partitions,
+ .name = "fixed-partitions",
++ .of_match_table = parse_ofpart_match_table,
+ };
+
+ static int parse_ofoldpart_partitions(struct mtd_info *master,
+++ /dev/null
-From: Hauke Mehrtens <hauke@hauke-m.de>
-Subject: mtd: part: add generic parsing of linux,part-probe
-
-This moves the linux,part-probe device tree parsing code from
-physmap_of.c to mtdpart.c. Now all drivers can use this feature by just
-providing a reference to their device tree node in struct
-mtd_part_parser_data.
-
-Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
----
- Documentation/devicetree/bindings/mtd/nand.txt | 16 +++++++++
- drivers/mtd/maps/physmap_of.c | 46 +-------------------------
- drivers/mtd/mtdpart.c | 45 +++++++++++++++++++++++++
- 3 files changed, 62 insertions(+), 45 deletions(-)
-
---- a/Documentation/devicetree/bindings/mtd/nand.txt
-+++ b/Documentation/devicetree/bindings/mtd/nand.txt
-@@ -44,6 +44,22 @@ Optional NAND chip properties:
- used by the upper layers, and you want to make your NAND
- as reliable as possible.
-
-+- linux,part-probe: list of name as strings of the partition parser
-+ which should be used to parse the partition table.
-+ They will be tried in the specified ordering and
-+ the next one will be used if the previous one
-+ failed.
-+
-+ Example: linux,part-probe = "cmdlinepart", "ofpart";
-+
-+ This is also the default value, which will be used
-+ if this attribute is not specified. It could be
-+ that the flash driver in use overwrote the default
-+ value and uses some other default.
-+
-+ Possible values are: bcm47xxpart, afs, ar7part,
-+ ofoldpart, ofpart, bcm63xxpart, RedBoot, cmdlinepart
-+
- The ECC strength and ECC step size properties define the correction capability
- of a controller. Together, they say a controller can correct "{strength} bit
- errors per {size} bytes".
---- a/drivers/mtd/maps/physmap_of_core.c
-+++ b/drivers/mtd/maps/physmap_of_core.c
-@@ -114,37 +114,9 @@ static struct mtd_info *obsolete_probe(s
- static const char * const part_probe_types_def[] = {
- "cmdlinepart", "RedBoot", "ofpart", "ofoldpart", NULL };
-
--static const char * const *of_get_probes(struct device_node *dp)
--{
-- const char **res;
-- int count;
--
-- count = of_property_count_strings(dp, "linux,part-probe");
-- if (count < 0)
-- return part_probe_types_def;
--
-- res = kzalloc((count + 1) * sizeof(*res), GFP_KERNEL);
-- if (!res)
-- return NULL;
--
-- count = of_property_read_string_array(dp, "linux,part-probe", res,
-- count);
-- if (count < 0)
-- return NULL;
--
-- return res;
--}
--
--static void of_free_probes(const char * const *probes)
--{
-- if (probes != part_probe_types_def)
-- kfree(probes);
--}
--
- static const struct of_device_id of_flash_match[];
- static int of_flash_probe(struct platform_device *dev)
- {
-- const char * const *part_probe_types;
- const struct of_device_id *match;
- struct device_node *dp = dev->dev.of_node;
- struct resource res;
-@@ -310,14 +282,8 @@ static int of_flash_probe(struct platfor
-
- info->cmtd->dev.parent = &dev->dev;
- mtd_set_of_node(info->cmtd, dp);
-- part_probe_types = of_get_probes(dp);
-- if (!part_probe_types) {
-- err = -ENOMEM;
-- goto err_out;
-- }
-- mtd_device_parse_register(info->cmtd, part_probe_types, NULL,
-+ mtd_device_parse_register(info->cmtd, part_probe_types_def, NULL,
- NULL, 0);
-- of_free_probes(part_probe_types);
-
- kfree(mtd_list);
-
---- a/drivers/mtd/mtdpart.c
-+++ b/drivers/mtd/mtdpart.c
-@@ -29,6 +29,7 @@
- #include <linux/kmod.h>
- #include <linux/mtd/mtd.h>
- #include <linux/mtd/partitions.h>
-+#include <linux/of.h>
- #include <linux/err.h>
- #include <linux/of.h>
-
-@@ -864,6 +865,32 @@ void deregister_mtd_parser(struct mtd_pa
- EXPORT_SYMBOL_GPL(deregister_mtd_parser);
-
- /*
-+ * Parses the linux,part-probe device tree property.
-+ * When a non null value is returned it has to be freed with kfree() by
-+ * the caller.
-+ */
-+static const char * const *of_get_probes(struct device_node *dp)
-+{
-+ const char **res;
-+ int count;
-+
-+ count = of_property_count_strings(dp, "linux,part-probe");
-+ if (count < 0)
-+ return NULL;
-+
-+ res = kzalloc((count + 1) * sizeof(*res), GFP_KERNEL);
-+ if (!res)
-+ return NULL;
-+
-+ count = of_property_read_string_array(dp, "linux,part-probe", res,
-+ count);
-+ if (count < 0)
-+ return NULL;
-+
-+ return res;
-+}
-+
-+/*
- * Do not forget to update 'parse_mtd_partitions()' kerneldoc comment if you
- * are changing this array!
- */
-@@ -963,6 +990,13 @@ int parse_mtd_partitions(struct mtd_info
- struct property *prop;
- const char *compat;
- int ret, err = 0;
-+ const char *const *types_of = NULL;
-+
-+ if (mtd_get_of_node(master)) {
-+ types_of = of_get_probes(mtd_get_of_node(master));
-+ if (types_of != NULL)
-+ types = types_of;
-+ }
-
- np = of_get_child_by_name(mtd_get_of_node(master), "partitions");
- of_property_for_each_string(np, "compatible", prop, compat) {
-@@ -1004,6 +1038,7 @@ int parse_mtd_partitions(struct mtd_info
- if (ret < 0 && !err)
- err = ret;
- }
-+ kfree(types_of);
- return err;
- }
-
--- /dev/null
+From: Hauke Mehrtens <hauke@hauke-m.de>
+Subject: mtd: part: add generic parsing of linux,part-probe
+
+This moves the linux,part-probe device tree parsing code from
+physmap_of.c to mtdpart.c. Now all drivers can use this feature by just
+providing a reference to their device tree node in struct
+mtd_part_parser_data.
+
+Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
+---
+ Documentation/devicetree/bindings/mtd/nand.txt | 16 +++++++++
+ drivers/mtd/maps/physmap_of.c | 46 +-------------------------
+ drivers/mtd/mtdpart.c | 45 +++++++++++++++++++++++++
+ 3 files changed, 62 insertions(+), 45 deletions(-)
+
+--- a/Documentation/devicetree/bindings/mtd/nand.txt
++++ b/Documentation/devicetree/bindings/mtd/nand.txt
+@@ -44,6 +44,22 @@ Optional NAND chip properties:
+ used by the upper layers, and you want to make your NAND
+ as reliable as possible.
+
++- linux,part-probe: list of name as strings of the partition parser
++ which should be used to parse the partition table.
++ They will be tried in the specified ordering and
++ the next one will be used if the previous one
++ failed.
++
++ Example: linux,part-probe = "cmdlinepart", "ofpart";
++
++ This is also the default value, which will be used
++ if this attribute is not specified. It could be
++ that the flash driver in use overwrote the default
++ value and uses some other default.
++
++ Possible values are: bcm47xxpart, afs, ar7part,
++ ofoldpart, ofpart, bcm63xxpart, RedBoot, cmdlinepart
++
+ The ECC strength and ECC step size properties define the correction capability
+ of a controller. Together, they say a controller can correct "{strength} bit
+ errors per {size} bytes".
+--- a/drivers/mtd/maps/physmap_of_core.c
++++ b/drivers/mtd/maps/physmap_of_core.c
+@@ -114,37 +114,9 @@ static struct mtd_info *obsolete_probe(s
+ static const char * const part_probe_types_def[] = {
+ "cmdlinepart", "RedBoot", "ofpart", "ofoldpart", NULL };
+
+-static const char * const *of_get_probes(struct device_node *dp)
+-{
+- const char **res;
+- int count;
+-
+- count = of_property_count_strings(dp, "linux,part-probe");
+- if (count < 0)
+- return part_probe_types_def;
+-
+- res = kzalloc((count + 1) * sizeof(*res), GFP_KERNEL);
+- if (!res)
+- return NULL;
+-
+- count = of_property_read_string_array(dp, "linux,part-probe", res,
+- count);
+- if (count < 0)
+- return NULL;
+-
+- return res;
+-}
+-
+-static void of_free_probes(const char * const *probes)
+-{
+- if (probes != part_probe_types_def)
+- kfree(probes);
+-}
+-
+ static const struct of_device_id of_flash_match[];
+ static int of_flash_probe(struct platform_device *dev)
+ {
+- const char * const *part_probe_types;
+ const struct of_device_id *match;
+ struct device_node *dp = dev->dev.of_node;
+ struct resource res;
+@@ -310,14 +282,8 @@ static int of_flash_probe(struct platfor
+
+ info->cmtd->dev.parent = &dev->dev;
+ mtd_set_of_node(info->cmtd, dp);
+- part_probe_types = of_get_probes(dp);
+- if (!part_probe_types) {
+- err = -ENOMEM;
+- goto err_out;
+- }
+- mtd_device_parse_register(info->cmtd, part_probe_types, NULL,
++ mtd_device_parse_register(info->cmtd, part_probe_types_def, NULL,
+ NULL, 0);
+- of_free_probes(part_probe_types);
+
+ kfree(mtd_list);
+
+--- a/drivers/mtd/mtdpart.c
++++ b/drivers/mtd/mtdpart.c
+@@ -29,6 +29,7 @@
+ #include <linux/kmod.h>
+ #include <linux/mtd/mtd.h>
+ #include <linux/mtd/partitions.h>
++#include <linux/of.h>
+ #include <linux/err.h>
+ #include <linux/of.h>
+
+@@ -864,6 +865,32 @@ void deregister_mtd_parser(struct mtd_pa
+ EXPORT_SYMBOL_GPL(deregister_mtd_parser);
+
+ /*
++ * Parses the linux,part-probe device tree property.
++ * When a non null value is returned it has to be freed with kfree() by
++ * the caller.
++ */
++static const char * const *of_get_probes(struct device_node *dp)
++{
++ const char **res;
++ int count;
++
++ count = of_property_count_strings(dp, "linux,part-probe");
++ if (count < 0)
++ return NULL;
++
++ res = kzalloc((count + 1) * sizeof(*res), GFP_KERNEL);
++ if (!res)
++ return NULL;
++
++ count = of_property_read_string_array(dp, "linux,part-probe", res,
++ count);
++ if (count < 0)
++ return NULL;
++
++ return res;
++}
++
++/*
+ * Do not forget to update 'parse_mtd_partitions()' kerneldoc comment if you
+ * are changing this array!
+ */
+@@ -1007,6 +1034,13 @@ int parse_mtd_partitions(struct mtd_info
+ {
+ struct mtd_part_parser *parser;
+ int ret, err = 0;
++ const char *const *types_of = NULL;
++
++ if (mtd_get_of_node(master)) {
++ types_of = of_get_probes(mtd_get_of_node(master));
++ if (types_of != NULL)
++ types = types_of;
++ }
+
+ if (!types)
+ types = default_mtd_part_types;
+@@ -1043,6 +1077,7 @@ int parse_mtd_partitions(struct mtd_info
+ if (ret < 0 && !err)
+ err = ret;
+ }
++ kfree(types_of);
+ return err;
+ }
+
--- a/drivers/mtd/mtdpart.c
+++ b/drivers/mtd/mtdpart.c
-@@ -1093,6 +1093,62 @@ void mtd_part_parser_cleanup(struct mtd_
+@@ -1132,6 +1132,62 @@ void mtd_part_parser_cleanup(struct mtd_
}
}
#ifdef CONFIG_MTD_SPLIT_FIRMWARE_NAME
#define SPLIT_FIRMWARE_NAME CONFIG_MTD_SPLIT_FIRMWARE_NAME
#else
-@@ -1203,6 +1214,24 @@ int mtd_is_partition(const struct mtd_in
+@@ -1242,6 +1253,24 @@ int mtd_is_partition(const struct mtd_in
}
EXPORT_SYMBOL_GPL(mtd_is_partition);
--- /dev/null
+From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
+Date: Tue, 30 Jan 2018 11:55:16 +0100
+Subject: [PATCH V10 1/3] mtd: partitions: add of_match_table parser matching
+ for the "ofpart" type
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+In order to properly support compatibility strings as described in the
+bindings/mtd/partition.txt "ofpart" type should be treated as an
+indication for looking into OF. MTD should check "compatible" property
+and search for a matching parser rather than blindly trying the one
+supporting "fixed-partitions".
+
+It also means that existing "fixed-partitions" parser should get renamed
+to use a more meaningful name.
+
+This commit achievies that aim by introducing a new mtd_part_of_parse().
+It works by looking for a matching parser for every string in the
+"compatibility" property (starting with the most specific one).
+
+Please note that driver-specified parsers still take a precedence. It's
+assumed that driver providing a parser type has a good reason for that
+(e.g. having platform data with device-specific info). Also doing
+otherwise could break existing setups. The same applies to using default
+parsers (including "cmdlinepart") as some overwrite DT data with cmdline
+argument.
+
+Partition parsers can now provide an of_match_table to enable
+flash<-->parser matching via device tree as documented in the
+mtd/partition.txt.
+
+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 <computersforpeace@gmail.com>
+Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
+Tested-by: Peter Rosin <peda@axentia.se>
+---
+
+--- a/drivers/mtd/mtdpart.c
++++ b/drivers/mtd/mtdpart.c
+@@ -30,6 +30,7 @@
+ #include <linux/mtd/mtd.h>
+ #include <linux/mtd/partitions.h>
+ #include <linux/err.h>
++#include <linux/of.h>
+
+ #include "mtdcore.h"
+
+@@ -886,6 +887,92 @@ 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;
++}
++
++static int mtd_part_of_parse(struct mtd_info *master,
++ struct mtd_partitions *pparts)
++{
++ struct mtd_part_parser *parser;
++ struct device_node *np;
++ struct property *prop;
++ const char *compat;
++ const char *fixed = "ofpart";
++ 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, NULL);
++ if (ret > 0) {
++ of_node_put(np);
++ return ret;
++ }
++ mtd_part_parser_put(parser);
++ if (ret < 0 && !err)
++ err = ret;
++ }
++ of_node_put(np);
++
++ /*
++ * For backward compatibility we have to try the "ofpart"
++ * parser. It supports old DT format with partitions specified as a
++ * direct subnodes of a flash device DT node without any compatibility
++ * specified we could match.
++ */
++ parser = mtd_part_parser_get(fixed);
++ if (!parser && !request_module("%s", fixed))
++ parser = mtd_part_parser_get(fixed);
++ if (parser) {
++ ret = mtd_part_do_parse(parser, master, pparts, NULL);
++ if (ret > 0)
++ return ret;
++ mtd_part_parser_put(parser);
++ if (ret < 0 && !err)
++ err = ret;
++ }
++
++ return err;
++}
++
++/**
+ * parse_mtd_partitions - parse MTD partitions
+ * @master: the master partition (describes whole MTD device)
+ * @types: names of partition parsers to try or %NULL
+@@ -917,19 +1004,30 @@ int parse_mtd_partitions(struct mtd_info
+ types = default_mtd_part_types;
+
+ for ( ; *types; types++) {
+- pr_debug("%s: parsing partitions %s\n", master->name, *types);
+- parser = mtd_part_parser_get(*types);
+- if (!parser && !request_module("%s", *types))
++ /*
++ * ofpart is a special type that means OF partitioning info
++ * should be used. It requires a bit different logic so it is
++ * handled in a separated function.
++ */
++ if (!strcmp(*types, "ofpart")) {
++ ret = mtd_part_of_parse(master, pparts);
++ } else {
++ pr_debug("%s: parsing partitions %s\n", master->name,
++ *types);
+ parser = mtd_part_parser_get(*types);
+- pr_debug("%s: got parser %s\n", master->name,
+- parser ? parser->name : NULL);
+- if (!parser)
+- continue;
+- ret = mtd_part_do_parse(parser, master, pparts, data);
++ if (!parser && !request_module("%s", *types))
++ parser = mtd_part_parser_get(*types);
++ pr_debug("%s: got parser %s\n", master->name,
++ parser ? parser->name : NULL);
++ if (!parser)
++ continue;
++ ret = mtd_part_do_parse(parser, master, pparts, data);
++ if (ret <= 0)
++ mtd_part_parser_put(parser);
++ }
+ /* Found partitions! */
+ if (ret > 0)
+ return 0;
+- mtd_part_parser_put(parser);
+ /*
+ * Stash the first error we see; only report it if no parser
+ * succeeds
+--- 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);
--- /dev/null
+From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
+Date: Tue, 30 Jan 2018 12:09:58 +0100
+Subject: [PATCH V10 2/3] mtd: rename "ofpart" parser to "fixed-partitions" as
+ it fits it better
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Type "ofpart" means that OF should be used to get partitioning info and
+this driver supports "fixed-partitions" binding only. Renaming it should
+lead to less confusion especially when parsers for new compatibility
+strings start to appear.
+
+Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
+---
+
+--- a/drivers/mtd/mtdpart.c
++++ b/drivers/mtd/mtdpart.c
+@@ -932,7 +932,7 @@ static int mtd_part_of_parse(struct mtd_
+ struct device_node *np;
+ struct property *prop;
+ const char *compat;
+- const char *fixed = "ofpart";
++ const char *fixed = "fixed-partitions";
+ int ret, err = 0;
+
+ np = of_get_child_by_name(mtd_get_of_node(master), "partitions");
+@@ -952,7 +952,7 @@ static int mtd_part_of_parse(struct mtd_
+ of_node_put(np);
+
+ /*
+- * For backward compatibility we have to try the "ofpart"
++ * For backward compatibility we have to try the "fixed-partitions"
+ * parser. It supports old DT format with partitions specified as a
+ * direct subnodes of a flash device DT node without any compatibility
+ * specified we could match.
+--- a/drivers/mtd/ofpart.c
++++ b/drivers/mtd/ofpart.c
+@@ -25,9 +25,9 @@ static bool node_has_compatible(struct d
+ return of_get_property(pp, "compatible", NULL);
+ }
+
+-static int parse_ofpart_partitions(struct mtd_info *master,
+- const struct mtd_partition **pparts,
+- struct mtd_part_parser_data *data)
++static int parse_fixed_partitions(struct mtd_info *master,
++ const struct mtd_partition **pparts,
++ struct mtd_part_parser_data *data)
+ {
+ struct mtd_partition *parts;
+ struct device_node *mtd_node;
+@@ -141,8 +141,8 @@ ofpart_none:
+ }
+
+ static struct mtd_part_parser ofpart_parser = {
+- .parse_fn = parse_ofpart_partitions,
+- .name = "ofpart",
++ .parse_fn = parse_fixed_partitions,
++ .name = "fixed-partitions",
+ };
+
+ static int parse_ofoldpart_partitions(struct mtd_info *master,
+@@ -230,4 +230,5 @@ MODULE_AUTHOR("Vitaly Wool, David Gibson
+ * with the same name. Since we provide the ofoldpart parser, we should have
+ * the corresponding alias.
+ */
++MODULE_ALIAS("fixed-partitions");
+ MODULE_ALIAS("ofoldpart");
--- /dev/null
+From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
+Date: Thu, 4 Jan 2018 08:05:34 +0100
+Subject: [PATCH V10 3/3] 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 <rafal@milecki.pl>
+Reviewed-by: Brian Norris <computersforpeace@gmail.com>
+Tested-by: Brian Norris <computersforpeace@gmail.com>
+---
+
+--- 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_fixed_partitions,
+ .name = "fixed-partitions",
++ .of_match_table = parse_ofpart_match_table,
+ };
+
+ static int parse_ofoldpart_partitions(struct mtd_info *master,
+++ /dev/null
-From: Hauke Mehrtens <hauke@hauke-m.de>
-Subject: mtd: part: add generic parsing of linux,part-probe
-
-This moves the linux,part-probe device tree parsing code from
-physmap_of.c to mtdpart.c. Now all drivers can use this feature by just
-providing a reference to their device tree node in struct
-mtd_part_parser_data.
-
-Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
----
- Documentation/devicetree/bindings/mtd/nand.txt | 16 +++++++++
- drivers/mtd/maps/physmap_of.c | 46 +-------------------------
- drivers/mtd/mtdpart.c | 45 +++++++++++++++++++++++++
- 3 files changed, 62 insertions(+), 45 deletions(-)
-
---- a/Documentation/devicetree/bindings/mtd/nand.txt
-+++ b/Documentation/devicetree/bindings/mtd/nand.txt
-@@ -44,6 +44,22 @@ Optional NAND chip properties:
- used by the upper layers, and you want to make your NAND
- as reliable as possible.
-
-+- linux,part-probe: list of name as strings of the partition parser
-+ which should be used to parse the partition table.
-+ They will be tried in the specified ordering and
-+ the next one will be used if the previous one
-+ failed.
-+
-+ Example: linux,part-probe = "cmdlinepart", "ofpart";
-+
-+ This is also the default value, which will be used
-+ if this attribute is not specified. It could be
-+ that the flash driver in use overwrote the default
-+ value and uses some other default.
-+
-+ Possible values are: bcm47xxpart, afs, ar7part,
-+ ofoldpart, ofpart, bcm63xxpart, RedBoot, cmdlinepart
-+
- The ECC strength and ECC step size properties define the correction capability
- of a controller. Together, they say a controller can correct "{strength} bit
- errors per {size} bytes".
---- a/drivers/mtd/maps/physmap_of.c
-+++ b/drivers/mtd/maps/physmap_of.c
-@@ -113,47 +113,9 @@ static struct mtd_info *obsolete_probe(s
- static const char * const part_probe_types_def[] = {
- "cmdlinepart", "RedBoot", "ofpart", "ofoldpart", NULL };
-
--static const char * const *of_get_probes(struct device_node *dp)
--{
-- const char *cp;
-- int cplen;
-- unsigned int l;
-- unsigned int count;
-- const char **res;
--
-- cp = of_get_property(dp, "linux,part-probe", &cplen);
-- if (cp == NULL)
-- return part_probe_types_def;
--
-- count = 0;
-- for (l = 0; l != cplen; l++)
-- if (cp[l] == 0)
-- count++;
--
-- res = kzalloc((count + 1)*sizeof(*res), GFP_KERNEL);
-- if (!res)
-- return NULL;
-- count = 0;
-- while (cplen > 0) {
-- res[count] = cp;
-- l = strlen(cp) + 1;
-- cp += l;
-- cplen -= l;
-- count++;
-- }
-- return res;
--}
--
--static void of_free_probes(const char * const *probes)
--{
-- if (probes != part_probe_types_def)
-- kfree(probes);
--}
--
- static const struct of_device_id of_flash_match[];
- static int of_flash_probe(struct platform_device *dev)
- {
-- const char * const *part_probe_types;
- const struct of_device_id *match;
- struct device_node *dp = dev->dev.of_node;
- struct resource res;
-@@ -317,14 +279,8 @@ static int of_flash_probe(struct platfor
-
- info->cmtd->dev.parent = &dev->dev;
- mtd_set_of_node(info->cmtd, dp);
-- part_probe_types = of_get_probes(dp);
-- if (!part_probe_types) {
-- err = -ENOMEM;
-- goto err_out;
-- }
-- mtd_device_parse_register(info->cmtd, part_probe_types, NULL,
-+ mtd_device_parse_register(info->cmtd, part_probe_types_def, NULL,
- NULL, 0);
-- of_free_probes(part_probe_types);
-
- kfree(mtd_list);
-
---- a/drivers/mtd/mtdpart.c
-+++ b/drivers/mtd/mtdpart.c
-@@ -29,6 +29,7 @@
- #include <linux/kmod.h>
- #include <linux/mtd/mtd.h>
- #include <linux/mtd/partitions.h>
-+#include <linux/of.h>
- #include <linux/err.h>
- #include <linux/of.h>
-
-@@ -856,6 +857,42 @@ void deregister_mtd_parser(struct mtd_pa
- EXPORT_SYMBOL_GPL(deregister_mtd_parser);
-
- /*
-+ * Parses the linux,part-probe device tree property.
-+ * When a non null value is returned it has to be freed with kfree() by
-+ * the caller.
-+ */
-+static const char * const *of_get_probes(struct device_node *dp)
-+{
-+ const char *cp;
-+ int cplen;
-+ unsigned int l;
-+ unsigned int count;
-+ const char **res;
-+
-+ cp = of_get_property(dp, "linux,part-probe", &cplen);
-+ if (cp == NULL)
-+ return NULL;
-+
-+ count = 0;
-+ for (l = 0; l != cplen; l++)
-+ if (cp[l] == 0)
-+ count++;
-+
-+ res = kzalloc((count + 1) * sizeof(*res), GFP_KERNEL);
-+ if (!res)
-+ return NULL;
-+ count = 0;
-+ while (cplen > 0) {
-+ res[count] = cp;
-+ l = strlen(cp) + 1;
-+ cp += l;
-+ cplen -= l;
-+ count++;
-+ }
-+ return res;
-+}
-+
-+/*
- * Do not forget to update 'parse_mtd_partitions()' kerneldoc comment if you
- * are changing this array!
- */
-@@ -955,6 +992,13 @@ int parse_mtd_partitions(struct mtd_info
- struct property *prop;
- const char *compat;
- int ret, err = 0;
-+ const char *const *types_of = NULL;
-+
-+ if (mtd_get_of_node(master)) {
-+ types_of = of_get_probes(mtd_get_of_node(master));
-+ if (types_of != NULL)
-+ types = types_of;
-+ }
-
- np = of_get_child_by_name(mtd_get_of_node(master), "partitions");
- of_property_for_each_string(np, "compatible", prop, compat) {
-@@ -996,6 +1040,7 @@ int parse_mtd_partitions(struct mtd_info
- if (ret < 0 && !err)
- err = ret;
- }
-+ kfree(types_of);
- return err;
- }
-
--- /dev/null
+From: Hauke Mehrtens <hauke@hauke-m.de>
+Subject: mtd: part: add generic parsing of linux,part-probe
+
+This moves the linux,part-probe device tree parsing code from
+physmap_of.c to mtdpart.c. Now all drivers can use this feature by just
+providing a reference to their device tree node in struct
+mtd_part_parser_data.
+
+Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
+---
+ Documentation/devicetree/bindings/mtd/nand.txt | 16 +++++++++
+ drivers/mtd/maps/physmap_of.c | 46 +-------------------------
+ drivers/mtd/mtdpart.c | 45 +++++++++++++++++++++++++
+ 3 files changed, 62 insertions(+), 45 deletions(-)
+
+--- a/Documentation/devicetree/bindings/mtd/nand.txt
++++ b/Documentation/devicetree/bindings/mtd/nand.txt
+@@ -44,6 +44,22 @@ Optional NAND chip properties:
+ used by the upper layers, and you want to make your NAND
+ as reliable as possible.
+
++- linux,part-probe: list of name as strings of the partition parser
++ which should be used to parse the partition table.
++ They will be tried in the specified ordering and
++ the next one will be used if the previous one
++ failed.
++
++ Example: linux,part-probe = "cmdlinepart", "ofpart";
++
++ This is also the default value, which will be used
++ if this attribute is not specified. It could be
++ that the flash driver in use overwrote the default
++ value and uses some other default.
++
++ Possible values are: bcm47xxpart, afs, ar7part,
++ ofoldpart, ofpart, bcm63xxpart, RedBoot, cmdlinepart
++
+ The ECC strength and ECC step size properties define the correction capability
+ of a controller. Together, they say a controller can correct "{strength} bit
+ errors per {size} bytes".
+--- a/drivers/mtd/maps/physmap_of.c
++++ b/drivers/mtd/maps/physmap_of.c
+@@ -113,47 +113,9 @@ static struct mtd_info *obsolete_probe(s
+ static const char * const part_probe_types_def[] = {
+ "cmdlinepart", "RedBoot", "ofpart", "ofoldpart", NULL };
+
+-static const char * const *of_get_probes(struct device_node *dp)
+-{
+- const char *cp;
+- int cplen;
+- unsigned int l;
+- unsigned int count;
+- const char **res;
+-
+- cp = of_get_property(dp, "linux,part-probe", &cplen);
+- if (cp == NULL)
+- return part_probe_types_def;
+-
+- count = 0;
+- for (l = 0; l != cplen; l++)
+- if (cp[l] == 0)
+- count++;
+-
+- res = kzalloc((count + 1)*sizeof(*res), GFP_KERNEL);
+- if (!res)
+- return NULL;
+- count = 0;
+- while (cplen > 0) {
+- res[count] = cp;
+- l = strlen(cp) + 1;
+- cp += l;
+- cplen -= l;
+- count++;
+- }
+- return res;
+-}
+-
+-static void of_free_probes(const char * const *probes)
+-{
+- if (probes != part_probe_types_def)
+- kfree(probes);
+-}
+-
+ static const struct of_device_id of_flash_match[];
+ static int of_flash_probe(struct platform_device *dev)
+ {
+- const char * const *part_probe_types;
+ const struct of_device_id *match;
+ struct device_node *dp = dev->dev.of_node;
+ struct resource res;
+@@ -317,14 +279,8 @@ static int of_flash_probe(struct platfor
+
+ info->cmtd->dev.parent = &dev->dev;
+ mtd_set_of_node(info->cmtd, dp);
+- part_probe_types = of_get_probes(dp);
+- if (!part_probe_types) {
+- err = -ENOMEM;
+- goto err_out;
+- }
+- mtd_device_parse_register(info->cmtd, part_probe_types, NULL,
++ mtd_device_parse_register(info->cmtd, part_probe_types_def, NULL,
+ NULL, 0);
+- of_free_probes(part_probe_types);
+
+ kfree(mtd_list);
+
+--- a/drivers/mtd/mtdpart.c
++++ b/drivers/mtd/mtdpart.c
+@@ -29,6 +29,7 @@
+ #include <linux/kmod.h>
+ #include <linux/mtd/mtd.h>
+ #include <linux/mtd/partitions.h>
++#include <linux/of.h>
+ #include <linux/err.h>
+ #include <linux/of.h>
+
+@@ -856,6 +857,42 @@ void deregister_mtd_parser(struct mtd_pa
+ EXPORT_SYMBOL_GPL(deregister_mtd_parser);
+
+ /*
++ * Parses the linux,part-probe device tree property.
++ * When a non null value is returned it has to be freed with kfree() by
++ * the caller.
++ */
++static const char * const *of_get_probes(struct device_node *dp)
++{
++ const char *cp;
++ int cplen;
++ unsigned int l;
++ unsigned int count;
++ const char **res;
++
++ cp = of_get_property(dp, "linux,part-probe", &cplen);
++ if (cp == NULL)
++ return NULL;
++
++ count = 0;
++ for (l = 0; l != cplen; l++)
++ if (cp[l] == 0)
++ count++;
++
++ res = kzalloc((count + 1) * sizeof(*res), GFP_KERNEL);
++ if (!res)
++ return NULL;
++ count = 0;
++ while (cplen > 0) {
++ res[count] = cp;
++ l = strlen(cp) + 1;
++ cp += l;
++ cplen -= l;
++ count++;
++ }
++ return res;
++}
++
++/*
+ * Do not forget to update 'parse_mtd_partitions()' kerneldoc comment if you
+ * are changing this array!
+ */
+@@ -999,6 +1036,13 @@ int parse_mtd_partitions(struct mtd_info
+ {
+ struct mtd_part_parser *parser;
+ int ret, err = 0;
++ const char *const *types_of = NULL;
++
++ if (mtd_get_of_node(master)) {
++ types_of = of_get_probes(mtd_get_of_node(master));
++ if (types_of != NULL)
++ types = types_of;
++ }
+
+ if (!types)
+ types = default_mtd_part_types;
+@@ -1035,6 +1079,7 @@ int parse_mtd_partitions(struct mtd_info
+ if (ret < 0 && !err)
+ err = ret;
+ }
++ kfree(types_of);
+ return err;
+ }
+
--- a/drivers/mtd/mtdpart.c
+++ b/drivers/mtd/mtdpart.c
-@@ -1095,6 +1095,62 @@ void mtd_part_parser_cleanup(struct mtd_
+@@ -1134,6 +1134,62 @@ void mtd_part_parser_cleanup(struct mtd_
}
}
#ifdef CONFIG_MTD_SPLIT_FIRMWARE_NAME
#define SPLIT_FIRMWARE_NAME CONFIG_MTD_SPLIT_FIRMWARE_NAME
#else
-@@ -1205,6 +1216,24 @@ int mtd_is_partition(const struct mtd_in
+@@ -1244,6 +1255,24 @@ int mtd_is_partition(const struct mtd_in
}
EXPORT_SYMBOL_GPL(mtd_is_partition);
projects / openwrt / staging / dedeckeh.git / commitdiff