Partition parsers can now provide an of_match_table to enable
flash<-->parser matching via device tree.
TODO: Doesn't yet work when parser is built as module. I can't just use
request_module() and friends, since OF matches don't tell me the name of
the driver/module. Maybe I can report uevents?
Signed-off-by: Brian Norris <computersforpeace@xxxxxxxxx>
---
drivers/mtd/mtdpart.c | 32 ++++++++++++++++++++++++++++++++
1 file changed, 32 insertions(+)
diff --git a/drivers/mtd/mtdpart.c b/drivers/mtd/mtdpart.c
index b3100742ddf6..91eb2df0bf1e 100644
--- 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_mtd.h>
#include <linux/err.h>
#include <linux/kconfig.h>
@@ -728,6 +729,25 @@ static struct mtd_part_parser *mtd_part_parser_get_by_name(const char *name)
return __mtd_part_parser_get_by_name(name);
}
+static struct mtd_part_parser *mtd_part_parser_get_by_of(struct mtd_info *mtd)
+{
+ struct mtd_part_parser *p, *ret = NULL;
+
+ spin_lock(&part_parser_lock);
+
+ list_for_each_entry(p, &part_parsers, list) {
+ if (of_mtd_match_mtd_parser(mtd, p) &&
+ try_module_get(p->owner)) {
+ ret = p;
+ break;
+ }
+ }
+
+ spin_unlock(&part_parser_lock);
+
+ return ret;
+}
+
static inline void mtd_part_parser_put(const struct mtd_part_parser *p)
{
module_put(p->owner);
@@ -847,6 +867,18 @@ int parse_mtd_partitions(struct mtd_info *master, const char *const *types,
if (ret < 0 && !err)
err = ret;
}
+
+ parser = mtd_part_parser_get_by_of(master);
+ if (!parser)
+ return err;
+
+ ret = mtd_part_do_parse(parser, master, pparts, data);
+ if (ret > 0)
+ return 0;
+ mtd_part_parser_put(parser);
+ if (ret < 0 && !err)
+ err = ret;
+
return err;
}
--
2.6.0.rc2.230.g3dd15c0
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