[PATCH] fixup! cdev: export cdevfs_add_partition for general use

[Ahmad Fatoum]

Now that we export the function, some documentation can be useful.

Suggested-by: Sascha Hauer <s.hauer at pengutronix.de>
Signed-off-by: Ahmad Fatoum <a.fatoum at pengutronix.de>
---
 fs/devfs-core.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/fs/devfs-core.c b/fs/devfs-core.c
index 912bfeede8dc..060a24795c47 100644
--- a/fs/devfs-core.c
+++ b/fs/devfs-core.c
@@ -474,6 +474,17 @@ static struct cdev *check_overlap(struct cdev *cdev, const char *name, loff_t of
 	return ret ? ERR_PTR(ret) : cpart;
 }
 
+/**
+ * cdevfs_add_partition() - add partition to already registered cdev
+ * @cdev: parent cdev
+ * @partinfo: new partition information
+ * @end: If not NULL, will hold the the (non-inclusive) end offset of the newly
+ *       created partition.
+ *
+ * Return: the newly registered cdev or an error pointer if the new partition
+ *         would clash with exisiting partitions or overflow the cdev.
+ *         A valid cdev can be freed with cdevfs_del_partition()
+ */
 struct cdev *cdevfs_add_partition(struct cdev *cdev,
 		const struct devfs_partition *partinfo, loff_t *end)
 {
-- 
2.39.2