[PATCH 07/14] cdev: Collect partitions on list

[Sascha Hauer]

We currently do not have a way to iterate over all partitions of
a cdev. Change this.

Signed-off-by: Sascha Hauer <s.hauer at pengutronix.de>
---
 fs/devfs-core.c  | 8 ++++++++
 include/driver.h | 1 +
 2 files changed, 9 insertions(+)

diff --git a/fs/devfs-core.c b/fs/devfs-core.c
index 75ed3b0e66..c51ea6a871 100644
--- a/fs/devfs-core.c
+++ b/fs/devfs-core.c
@@ -277,6 +277,7 @@ int devfs_create(struct cdev *new)
 		return -EEXIST;
 
 	INIT_LIST_HEAD(&new->links);
+	INIT_LIST_HEAD(&new->partitions);
 
 	list_add_tail(&new->list, &cdev_list);
 	if (new->dev) {
@@ -326,6 +327,9 @@ int devfs_remove(struct cdev *cdev)
 	list_for_each_entry_safe(c, tmp, &cdev->links, link_entry)
 		devfs_remove(c);
 
+	if (cdev->master)
+		list_del(&cdev->partition_entry);
+
 	if (cdev->link)
 		free(cdev);
 
@@ -374,6 +378,8 @@ static struct cdev *__devfs_add_partition(struct cdev *cdev,
 				partinfo->flags, partinfo->name);
 		if (IS_ERR(mtd))
 			return (void *)mtd;
+
+		list_add_tail(&mtd->cdev.partition_entry, &cdev->partitions);
 		return &mtd->cdev;
 	}
 
@@ -390,6 +396,8 @@ static struct cdev *__devfs_add_partition(struct cdev *cdev,
 	new->dev = cdev->dev;
 	new->flags = partinfo->flags | DEVFS_IS_PARTITION;
 
+	list_add_tail(&new->partition_entry, &cdev->partitions);
+
 	devfs_create(new);
 
 	return new;
diff --git a/include/driver.h b/include/driver.h
index 6abaaad8b4..b7eaf290c4 100644
--- a/include/driver.h
+++ b/include/driver.h
@@ -459,6 +459,7 @@ struct cdev {
 	u8 dos_partition_type;
 	struct cdev *link;
 	struct list_head link_entry, links;
+	struct list_head partition_entry, partitions;
 };
 
 int devfs_create(struct cdev *);
-- 
2.11.0