From: Rafał Miłecki Date: Mon, 19 Feb 2018 14:40:42 +0000 (+0100) Subject: kernel: backport patches simplifying mtd_device_parse_register code X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=8651f1149dc18f6c730ae20f36a91d4eb360a9b0;p=openwrt%2Fstaging%2Fblogic.git kernel: backport patches simplifying mtd_device_parse_register code These 2 patches were recently queued for 4.17. Signed-off-by: Rafał Miłecki --- diff --git a/target/linux/generic/backport-4.14/040-v4.17-0001-mtd-move-code-adding-master-MTD-out-of-mtd_add_devic.patch b/target/linux/generic/backport-4.14/040-v4.17-0001-mtd-move-code-adding-master-MTD-out-of-mtd_add_devic.patch new file mode 100644 index 000000000000..df6429776f07 --- /dev/null +++ b/target/linux/generic/backport-4.14/040-v4.17-0001-mtd-move-code-adding-master-MTD-out-of-mtd_add_devic.patch @@ -0,0 +1,74 @@ +From 2c77c57d22adb05b21cdb333a0c42bdfa0e19835 Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= +Date: Tue, 16 Jan 2018 16:45:41 +0100 +Subject: [PATCH] mtd: move code adding master MTD out of + mtd_add_device_partitions() +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +This change is a small cleanup of mtd_device_parse_register(). When +using MTD_PARTITIONED_MASTER it makes sure a master MTD is registered +before dealing with partitions. The advantage of this is not mixing +code handling master MTD with code handling partitions. + +This commit doesn't change any behavior except from a slightly different +failure code path. The new code may need to call del_mtd_device when +something goes wrong. + +Signed-off-by: Rafał Miłecki +Signed-off-by: Boris Brezillon +--- + drivers/mtd/mtdcore.c | 25 +++++++++++++------------ + 1 file changed, 13 insertions(+), 12 deletions(-) + +--- a/drivers/mtd/mtdcore.c ++++ b/drivers/mtd/mtdcore.c +@@ -641,20 +641,12 @@ static int mtd_add_device_partitions(str + { + const struct mtd_partition *real_parts = parts->parts; + int nbparts = parts->nr_parts; +- int ret; + +- if (nbparts == 0 || IS_ENABLED(CONFIG_MTD_PARTITIONED_MASTER)) { +- ret = add_mtd_device(mtd); +- if (ret) +- return ret; +- } ++ if (!nbparts && !device_is_registered(&mtd->dev)) ++ return add_mtd_device(mtd); + +- if (nbparts > 0) { +- ret = add_mtd_partitions(mtd, real_parts, nbparts); +- if (ret && IS_ENABLED(CONFIG_MTD_PARTITIONED_MASTER)) +- del_mtd_device(mtd); +- return ret; +- } ++ if (nbparts > 0) ++ return add_mtd_partitions(mtd, real_parts, nbparts); + + return 0; + } +@@ -714,6 +706,12 @@ int mtd_device_parse_register(struct mtd + + mtd_set_dev_defaults(mtd); + ++ if (IS_ENABLED(CONFIG_MTD_PARTITIONED_MASTER)) { ++ ret = add_mtd_device(mtd); ++ if (ret) ++ return ret; ++ } ++ + memset(&parsed, 0, sizeof(parsed)); + + ret = parse_mtd_partitions(mtd, types, &parsed, parser_data); +@@ -753,6 +751,9 @@ int mtd_device_parse_register(struct mtd + out: + /* Cleanup any parsed partitions */ + mtd_part_parser_cleanup(&parsed); ++ if (ret && device_is_registered(&mtd->dev)) ++ del_mtd_device(mtd); ++ + return ret; + } + EXPORT_SYMBOL_GPL(mtd_device_parse_register); diff --git a/target/linux/generic/backport-4.14/040-v4.17-0002-mtd-get-rid-of-the-mtd_add_device_partitions.patch b/target/linux/generic/backport-4.14/040-v4.17-0002-mtd-get-rid-of-the-mtd_add_device_partitions.patch new file mode 100644 index 000000000000..1042e674c33c --- /dev/null +++ b/target/linux/generic/backport-4.14/040-v4.17-0002-mtd-get-rid-of-the-mtd_add_device_partitions.patch @@ -0,0 +1,93 @@ +From 0dbe4ea78d69756efeb0bba0764f6bd4a9ee9567 Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= +Date: Tue, 16 Jan 2018 16:45:42 +0100 +Subject: [PATCH] mtd: get rid of the mtd_add_device_partitions() +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +This simplifies code a bit by: +1) Avoiding an extra (tiny) function +2) Checking for amount of parsed (found) partitions just once +3) Avoiding clearing/filling struct mtd_partitions manually + +With this commit proper functions are called directly from the +mtd_device_parse_register(). It doesn't need to use minor tricks like +memsetting struct to 0 to trigger an expected +mtd_add_device_partitions() behavior. + +Signed-off-by: Rafał Miłecki +Signed-off-by: Boris Brezillon +--- + drivers/mtd/mtdcore.c | 43 ++++++++++++------------------------------- + 1 file changed, 12 insertions(+), 31 deletions(-) + +--- a/drivers/mtd/mtdcore.c ++++ b/drivers/mtd/mtdcore.c +@@ -636,21 +636,6 @@ out_error: + return ret; + } + +-static int mtd_add_device_partitions(struct mtd_info *mtd, +- struct mtd_partitions *parts) +-{ +- const struct mtd_partition *real_parts = parts->parts; +- int nbparts = parts->nr_parts; +- +- if (!nbparts && !device_is_registered(&mtd->dev)) +- return add_mtd_device(mtd); +- +- if (nbparts > 0) +- return add_mtd_partitions(mtd, real_parts, nbparts); +- +- return 0; +-} +- + /* + * Set a few defaults based on the parent devices, if not provided by the + * driver +@@ -701,7 +686,7 @@ int mtd_device_parse_register(struct mtd + const struct mtd_partition *parts, + int nr_parts) + { +- struct mtd_partitions parsed; ++ struct mtd_partitions parsed = { }; + int ret; + + mtd_set_dev_defaults(mtd); +@@ -712,24 +697,20 @@ int mtd_device_parse_register(struct mtd + return ret; + } + +- memset(&parsed, 0, sizeof(parsed)); +- ++ /* Prefer parsed partitions over driver-provided fallback */ + ret = parse_mtd_partitions(mtd, types, &parsed, parser_data); +- if ((ret < 0 || parsed.nr_parts == 0) && parts && nr_parts) { +- /* Fall back to driver-provided partitions */ +- parsed = (struct mtd_partitions){ +- .parts = parts, +- .nr_parts = nr_parts, +- }; +- } else if (ret < 0) { +- /* Didn't come up with parsed OR fallback partitions */ +- pr_info("mtd: failed to find partitions; one or more parsers reports errors (%d)\n", +- ret); +- /* Don't abort on errors; we can still use unpartitioned MTD */ +- memset(&parsed, 0, sizeof(parsed)); ++ if (!ret && parsed.nr_parts) { ++ parts = parsed.parts; ++ nr_parts = parsed.nr_parts; + } + +- ret = mtd_add_device_partitions(mtd, &parsed); ++ if (nr_parts) ++ ret = add_mtd_partitions(mtd, parts, nr_parts); ++ else if (!device_is_registered(&mtd->dev)) ++ ret = add_mtd_device(mtd); ++ else ++ ret = 0; ++ + if (ret) + goto out; + diff --git a/target/linux/generic/backport-4.9/066-v4.16-0001-mtd-partitions-add-of_match_table-parser-matching.patch b/target/linux/generic/backport-4.9/066-v4.16-0001-mtd-partitions-add-of_match_table-parser-matching.patch deleted file mode 100644 index 06931ce2a497..000000000000 --- a/target/linux/generic/backport-4.9/066-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" - -@@ -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); diff --git a/target/linux/generic/backport-4.9/066-v4.16-0002-mtd-ofpart-add-of_match_table-with-fixed-partitions.patch b/target/linux/generic/backport-4.9/066-v4.16-0002-mtd-ofpart-add-of_match_table-with-fixed-partitions.patch deleted file mode 100644 index 2092cc28fd41..000000000000 --- a/target/linux/generic/backport-4.9/066-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, diff --git a/target/linux/generic/backport-4.9/066-v4.17-0001-mtd-move-code-adding-master-MTD-out-of-mtd_add_devic.patch b/target/linux/generic/backport-4.9/066-v4.17-0001-mtd-move-code-adding-master-MTD-out-of-mtd_add_devic.patch new file mode 100644 index 000000000000..07a456d4c083 --- /dev/null +++ b/target/linux/generic/backport-4.9/066-v4.17-0001-mtd-move-code-adding-master-MTD-out-of-mtd_add_devic.patch @@ -0,0 +1,74 @@ +From 2c77c57d22adb05b21cdb333a0c42bdfa0e19835 Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= +Date: Tue, 16 Jan 2018 16:45:41 +0100 +Subject: [PATCH] mtd: move code adding master MTD out of + mtd_add_device_partitions() +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +This change is a small cleanup of mtd_device_parse_register(). When +using MTD_PARTITIONED_MASTER it makes sure a master MTD is registered +before dealing with partitions. The advantage of this is not mixing +code handling master MTD with code handling partitions. + +This commit doesn't change any behavior except from a slightly different +failure code path. The new code may need to call del_mtd_device when +something goes wrong. + +Signed-off-by: Rafał Miłecki +Signed-off-by: Boris Brezillon +--- + drivers/mtd/mtdcore.c | 25 +++++++++++++------------ + 1 file changed, 13 insertions(+), 12 deletions(-) + +--- a/drivers/mtd/mtdcore.c ++++ b/drivers/mtd/mtdcore.c +@@ -631,20 +631,12 @@ static int mtd_add_device_partitions(str + { + const struct mtd_partition *real_parts = parts->parts; + int nbparts = parts->nr_parts; +- int ret; + +- if (nbparts == 0 || IS_ENABLED(CONFIG_MTD_PARTITIONED_MASTER)) { +- ret = add_mtd_device(mtd); +- if (ret) +- return ret; +- } ++ if (!nbparts && !device_is_registered(&mtd->dev)) ++ return add_mtd_device(mtd); + +- if (nbparts > 0) { +- ret = add_mtd_partitions(mtd, real_parts, nbparts); +- if (ret && IS_ENABLED(CONFIG_MTD_PARTITIONED_MASTER)) +- del_mtd_device(mtd); +- return ret; +- } ++ if (nbparts > 0) ++ return add_mtd_partitions(mtd, real_parts, nbparts); + + return 0; + } +@@ -704,6 +696,12 @@ int mtd_device_parse_register(struct mtd + + mtd_set_dev_defaults(mtd); + ++ if (IS_ENABLED(CONFIG_MTD_PARTITIONED_MASTER)) { ++ ret = add_mtd_device(mtd); ++ if (ret) ++ return ret; ++ } ++ + memset(&parsed, 0, sizeof(parsed)); + + ret = parse_mtd_partitions(mtd, types, &parsed, parser_data); +@@ -743,6 +741,9 @@ int mtd_device_parse_register(struct mtd + out: + /* Cleanup any parsed partitions */ + mtd_part_parser_cleanup(&parsed); ++ if (ret && device_is_registered(&mtd->dev)) ++ del_mtd_device(mtd); ++ + return ret; + } + EXPORT_SYMBOL_GPL(mtd_device_parse_register); diff --git a/target/linux/generic/backport-4.9/066-v4.17-0002-mtd-get-rid-of-the-mtd_add_device_partitions.patch b/target/linux/generic/backport-4.9/066-v4.17-0002-mtd-get-rid-of-the-mtd_add_device_partitions.patch new file mode 100644 index 000000000000..b629d430a482 --- /dev/null +++ b/target/linux/generic/backport-4.9/066-v4.17-0002-mtd-get-rid-of-the-mtd_add_device_partitions.patch @@ -0,0 +1,93 @@ +From 0dbe4ea78d69756efeb0bba0764f6bd4a9ee9567 Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= +Date: Tue, 16 Jan 2018 16:45:42 +0100 +Subject: [PATCH] mtd: get rid of the mtd_add_device_partitions() +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +This simplifies code a bit by: +1) Avoiding an extra (tiny) function +2) Checking for amount of parsed (found) partitions just once +3) Avoiding clearing/filling struct mtd_partitions manually + +With this commit proper functions are called directly from the +mtd_device_parse_register(). It doesn't need to use minor tricks like +memsetting struct to 0 to trigger an expected +mtd_add_device_partitions() behavior. + +Signed-off-by: Rafał Miłecki +Signed-off-by: Boris Brezillon +--- + drivers/mtd/mtdcore.c | 43 ++++++++++++------------------------------- + 1 file changed, 12 insertions(+), 31 deletions(-) + +--- a/drivers/mtd/mtdcore.c ++++ b/drivers/mtd/mtdcore.c +@@ -626,21 +626,6 @@ out_error: + return ret; + } + +-static int mtd_add_device_partitions(struct mtd_info *mtd, +- struct mtd_partitions *parts) +-{ +- const struct mtd_partition *real_parts = parts->parts; +- int nbparts = parts->nr_parts; +- +- if (!nbparts && !device_is_registered(&mtd->dev)) +- return add_mtd_device(mtd); +- +- if (nbparts > 0) +- return add_mtd_partitions(mtd, real_parts, nbparts); +- +- return 0; +-} +- + /* + * Set a few defaults based on the parent devices, if not provided by the + * driver +@@ -691,7 +676,7 @@ int mtd_device_parse_register(struct mtd + const struct mtd_partition *parts, + int nr_parts) + { +- struct mtd_partitions parsed; ++ struct mtd_partitions parsed = { }; + int ret; + + mtd_set_dev_defaults(mtd); +@@ -702,24 +687,20 @@ int mtd_device_parse_register(struct mtd + return ret; + } + +- memset(&parsed, 0, sizeof(parsed)); +- ++ /* Prefer parsed partitions over driver-provided fallback */ + ret = parse_mtd_partitions(mtd, types, &parsed, parser_data); +- if ((ret < 0 || parsed.nr_parts == 0) && parts && nr_parts) { +- /* Fall back to driver-provided partitions */ +- parsed = (struct mtd_partitions){ +- .parts = parts, +- .nr_parts = nr_parts, +- }; +- } else if (ret < 0) { +- /* Didn't come up with parsed OR fallback partitions */ +- pr_info("mtd: failed to find partitions; one or more parsers reports errors (%d)\n", +- ret); +- /* Don't abort on errors; we can still use unpartitioned MTD */ +- memset(&parsed, 0, sizeof(parsed)); ++ if (!ret && parsed.nr_parts) { ++ parts = parsed.parts; ++ nr_parts = parsed.nr_parts; + } + +- ret = mtd_add_device_partitions(mtd, &parsed); ++ if (nr_parts) ++ ret = add_mtd_partitions(mtd, parts, nr_parts); ++ else if (!device_is_registered(&mtd->dev)) ++ ret = add_mtd_device(mtd); ++ else ++ ret = 0; ++ + if (ret) + goto out; + diff --git a/target/linux/generic/backport-4.9/067-v4.17-0001-mtd-partitions-add-of_match_table-parser-matching.patch b/target/linux/generic/backport-4.9/067-v4.17-0001-mtd-partitions-add-of_match_table-parser-matching.patch new file mode 100644 index 000000000000..06931ce2a497 --- /dev/null +++ b/target/linux/generic/backport-4.9/067-v4.17-0001-mtd-partitions-add-of_match_table-parser-matching.patch @@ -0,0 +1,121 @@ +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" + +@@ -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); diff --git a/target/linux/generic/backport-4.9/067-v4.17-0002-mtd-ofpart-add-of_match_table-with-fixed-partitions.patch b/target/linux/generic/backport-4.9/067-v4.17-0002-mtd-ofpart-add-of_match_table-with-fixed-partitions.patch new file mode 100644 index 000000000000..2092cc28fd41 --- /dev/null +++ b/target/linux/generic/backport-4.9/067-v4.17-0002-mtd-ofpart-add-of_match_table-with-fixed-partitions.patch @@ -0,0 +1,43 @@ +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, diff --git a/target/linux/generic/pending-4.14/812-pci-dwc-fix-enumeration.patch b/target/linux/generic/pending-4.14/812-pci-dwc-fix-enumeration.patch index 42985efdc80f..f82963183112 100644 --- a/target/linux/generic/pending-4.14/812-pci-dwc-fix-enumeration.patch +++ b/target/linux/generic/pending-4.14/812-pci-dwc-fix-enumeration.patch @@ -47,11 +47,9 @@ Will send separate patches to stable as this file got moved/renamed drivers/pci/dwc/pcie-designware-host.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) -diff --git a/drivers/pci/dwc/pcie-designware-host.c b/drivers/pci/dwc/pcie-designware-host.c -index bf558df5b7b3..2b5470173196 100644 --- a/drivers/pci/dwc/pcie-designware-host.c +++ b/drivers/pci/dwc/pcie-designware-host.c -@@ -616,7 +616,7 @@ void dw_pcie_setup_rc(struct pcie_port *pp) +@@ -607,7 +607,7 @@ void dw_pcie_setup_rc(struct pcie_port * /* setup bus numbers */ val = dw_pcie_readl_dbi(pci, PCI_PRIMARY_BUS); val &= 0xff000000;