Add two helpers to access the field reserved for private controller data.
This makes it clearer what this field is reserved for and ease future
refactoring.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
        return &chip->mtd;
 }
 
+static inline void *nand_get_controller_data(struct nand_chip *chip)
+{
+       return chip->priv;
+}
+
+static inline void nand_set_controller_data(struct nand_chip *chip, void *priv)
+{
+       chip->priv = priv;
+}
+
 /*
  * NAND Flash Manufacturer ID Codes
  */