spl: saveenv: adding saveenv support in SPL

[u-boot] / drivers / core / uclass.c

diff --git a/drivers/core/uclass.c b/drivers/core/uclass.c
index 1141ce1ba3ccd0d22a081674e2f038b9a1b93c81..de602ae52dcbd2d7d7a823a4e470b81beb6d178b 100644 (file)
--- a/drivers/core/uclass.c
+++ b/drivers/core/uclass.c
@@ -311,6 +311,26 @@ static int uclass_find_device_by_phandle(enum uclass_id id,
 }
 #endif
 
+int uclass_get_device_by_driver(enum uclass_id id,
+                               const struct driver *find_drv,
+                               struct udevice **devp)
+{
+       struct udevice *dev;
+       struct uclass *uc;
+       int ret;
+
+       ret = uclass_get(id, &uc);
+       if (ret)
+               return ret;
+
+       list_for_each_entry(dev, &uc->dev_head, uclass_node) {
+               if (dev->driver == find_drv)
+                       return uclass_get_device_tail(dev, 0, devp);
+       }
+
+       return -ENODEV;
+}
+
 int uclass_get_device_tail(struct udevice *dev, int ret,
                                  struct udevice **devp)
 {