+++ /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.
-
-THIS METHOD HAS BEEN DEPRECATED
-
-Linux supports "compatible" property in the "partitions" subnode now. It
-should be used to specify partitions format (and trigger proper parser
-usage) if needed.
-
-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
-@@ -49,6 +49,22 @@ Optional NAND chip properties:
-
- - nand-rb: shall contain the native Ready/Busy ids.
-
-+- 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
-@@ -115,37 +115,9 @@ 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 = kcalloc(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;
-@@ -316,14 +288,8 @@ 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>
-
-@@ -796,6 +797,37 @@ void deregister_mtd_parser(struct mtd_pa
- }
- EXPORT_SYMBOL_GPL(deregister_mtd_parser);
-
-+#include <linux/version.h>
-+
-+/*
-+ * 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;
-+
-+ pr_warn("Support for the generic \"linux,part-probe\" has been deprecated and will be removed soon");
-+ BUILD_BUG_ON(LINUX_VERSION_CODE >= KERNEL_VERSION(4, 15, 0));
-+
-+ return res;
-+}
-+
- /*
- * Do not forget to update 'parse_mtd_partitions()' kerneldoc comment if you
- * are changing this array!
-@@ -948,6 +980,13 @@ int parse_mtd_partitions(struct mtd_info
- struct mtd_partitions pparts = { };
- 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 = mtd_is_partition(master) ? default_subpartition_types :
-@@ -989,6 +1028,7 @@ int parse_mtd_partitions(struct mtd_info
- if (ret < 0 && !err)
- err = ret;
- }
-+ kfree(types_of);
- return err;
- }
-
depends on m
--- a/drivers/mtd/mtdpart.c
+++ b/drivers/mtd/mtdpart.c
-@@ -29,11 +29,13 @@
+@@ -29,10 +29,12 @@
#include <linux/kmod.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
+#include <linux/magic.h>
- #include <linux/of.h>
#include <linux/err.h>
#include <linux/of.h>
/* Our partition linked list */
static LIST_HEAD(mtd_partitions);
-@@ -53,6 +55,8 @@ struct mtd_part {
+@@ -52,6 +54,8 @@ struct mtd_part {
struct list_head list;
};
/*
* Given a pointer to the MTD object in the mtd_part structure, we can retrieve
* the pointer to that structure.
-@@ -620,6 +624,7 @@ int mtd_add_partition(struct mtd_info *p
+@@ -619,6 +623,7 @@ int mtd_add_partition(struct mtd_info *p
mutex_unlock(&mtd_partitions_mutex);
add_mtd_device(&new->mtd);
mtd_add_partition_attrs(new);
-@@ -698,6 +703,29 @@ int mtd_del_partition(struct mtd_info *m
+@@ -697,6 +702,29 @@ int mtd_del_partition(struct mtd_info *m
}
EXPORT_SYMBOL_GPL(mtd_del_partition);
/*
* This function, given a master MTD object and a partition table, creates
* and registers slave MTD objects which are bound to the master according to
-@@ -729,6 +757,7 @@ int add_mtd_partitions(struct mtd_info *
+@@ -728,6 +756,7 @@ int add_mtd_partitions(struct mtd_info *
mutex_unlock(&mtd_partitions_mutex);
add_mtd_device(&slave->mtd);
--- a/drivers/mtd/mtdpart.c
+++ b/drivers/mtd/mtdpart.c
-@@ -37,6 +37,8 @@
+@@ -36,6 +36,8 @@
#include "mtdcore.h"
#include "mtdsplit/mtdsplit.h"
/* Our partition linked list */
static LIST_HEAD(mtd_partitions);
static DEFINE_MUTEX(mtd_partitions_mutex);
-@@ -221,6 +223,53 @@ static int part_erase(struct mtd_info *m
+@@ -220,6 +222,53 @@ static int part_erase(struct mtd_info *m
{
struct mtd_part *part = mtd_to_part(mtd);
int ret;
instr->addr += part->offset;
ret = part->parent->_erase(part->parent, instr);
-@@ -228,6 +277,24 @@ static int part_erase(struct mtd_info *m
+@@ -227,6 +276,24 @@ static int part_erase(struct mtd_info *m
instr->fail_addr -= part->offset;
instr->addr -= part->offset;
return ret;
}
-@@ -536,19 +603,22 @@ static struct mtd_part *allocate_partiti
+@@ -535,19 +602,22 @@ static struct mtd_part *allocate_partiti
remainder = do_div(tmp, wr_alignment);
if ((slave->mtd.flags & MTD_WRITEABLE) && remainder) {
/* Doesn't start on a boundary of major erase size */
projects / openwrt / staging / noltari.git / commitdiff