diff options
Diffstat (limited to 'target/linux/generic/pending-4.4/140-mtd-part-add-generic-parsing-of-linux-part-probe.patch')
| -rw-r--r-- | target/linux/generic/pending-4.4/140-mtd-part-add-generic-parsing-of-linux-part-probe.patch | 183 |
1 files changed, 0 insertions, 183 deletions
diff --git a/target/linux/generic/pending-4.4/140-mtd-part-add-generic-parsing-of-linux-part-probe.patch b/target/linux/generic/pending-4.4/140-mtd-part-add-generic-parsing-of-linux-part-probe.patch deleted file mode 100644 index e1b84ae52c..0000000000 --- a/target/linux/generic/pending-4.4/140-mtd-part-add-generic-parsing-of-linux-part-probe.patch +++ /dev/null @@ -1,183 +0,0 @@ -From 3e7056c3a369e9ef9ca804bc626b60ef6b62ee27 Mon Sep 17 00:00:00 2001 -From: Hauke Mehrtens <hauke@hauke-m.de> -Date: Sun, 17 May 2015 18:48:38 +0200 -Subject: [PATCH 2/3] 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 -@@ -12,6 +12,22 @@ - - nand-ecc-step-size: integer representing the number of data bytes - that are covered by a single ECC step. - -+- 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 -@@ -112,47 +112,9 @@ 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; -@@ -311,14 +273,8 @@ static int of_flash_probe(struct platfor - goto err_out; - - ppdata.of_node = 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, &ppdata, -+ mtd_device_parse_register(info->cmtd, part_probe_types_def, &ppdata, - 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/kconfig.h> - -@@ -721,6 +722,42 @@ 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! - */ -@@ -756,6 +793,13 @@ int parse_mtd_partitions(struct mtd_info - { - struct mtd_part_parser *parser; - int ret, err = 0; -+ const char *const *types_of = NULL; -+ -+ if (data && data->of_node) { -+ types_of = of_get_probes(data->of_node); -+ if (types_of != NULL) -+ types = types_of; -+ } - - if (!types) - types = default_mtd_part_types; -@@ -785,6 +829,7 @@ int parse_mtd_partitions(struct mtd_info - if (ret < 0 && !err) - err = ret; - } -+ kfree(types_of); - return err; - } - |