[PATCH 4/8] devfs-core: add function to find cdev by partuuid

[Steffen Trumtrar]

Signed-off-by: Steffen Trumtrar <s.trumtrar at pengutronix.de>
---
 fs/devfs-core.c  | 14 ++++++++++++++
 include/driver.h |  1 +
 2 files changed, 15 insertions(+)

diff --git a/fs/devfs-core.c b/fs/devfs-core.c
index 3368d3ed68bd..be56edd18d80 100644
--- a/fs/devfs-core.c
+++ b/fs/devfs-core.c
@@ -95,6 +95,20 @@ struct cdev *cdev_by_device_node(struct device_node *node)
 	return NULL;
 }
 
+struct cdev *cdev_by_partuuid(const char *partuuid)
+{
+	struct cdev *cdev;
+
+	if (!partuuid)
+		return NULL;
+
+	list_for_each_entry(cdev, &cdev_list, list) {
+		if (!strcmp(cdev->partuuid, partuuid))
+			return cdev;
+	}
+	return NULL;
+}
+
 /**
  * device_find_partition - find a partition belonging to a physical device
  *
diff --git a/include/driver.h b/include/driver.h
index 3d701f24398a..8617872053d8 100644
--- a/include/driver.h
+++ b/include/driver.h
@@ -472,6 +472,7 @@ struct cdev *cdev_by_name(const char *filename);
 struct cdev *lcdev_by_name(const char *filename);
 struct cdev *cdev_readlink(struct cdev *cdev);
 struct cdev *cdev_by_device_node(struct device_node *node);
+struct cdev *cdev_by_partuuid(const char *partuuid);
 struct cdev *cdev_open(const char *name, unsigned long flags);
 struct cdev *cdev_create_loop(const char *path, ulong flags);
 void cdev_remove_loop(struct cdev *cdev);
-- 
2.11.0