mtd: introduce mtd_read_fact_prot_reg interface

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
diff --git a/drivers/mtd/mtdchar.c b/drivers/mtd/mtdchar.c
index 4b1772f..6afb054 100644
--- a/drivers/mtd/mtdchar.c
+++ b/drivers/mtd/mtdchar.c
@@ -213,7 +213,8 @@
 
 		switch (mfi->mode) {
 		case MTD_FILE_MODE_OTP_FACTORY:
-			ret = mtd->read_fact_prot_reg(mtd, *ppos, len, &retlen, kbuf);
+			ret = mtd_read_fact_prot_reg(mtd, *ppos, len,
+						     &retlen, kbuf);
 			break;
 		case MTD_FILE_MODE_OTP_USER:
 			ret = mtd->read_user_prot_reg(mtd, *ppos, len, &retlen, kbuf);
diff --git a/drivers/mtd/mtdpart.c b/drivers/mtd/mtdpart.c
index 6bed8bb..4f2c913 100644
--- a/drivers/mtd/mtdpart.c
+++ b/drivers/mtd/mtdpart.c
@@ -167,8 +167,7 @@
 		size_t len, size_t *retlen, u_char *buf)
 {
 	struct mtd_part *part = PART(mtd);
-	return part->master->read_fact_prot_reg(part->master, from,
-					len, retlen, buf);
+	return mtd_read_fact_prot_reg(part->master, from, len, retlen, buf);
 }
 
 static int part_get_fact_prot_info(struct mtd_info *mtd, struct otp_info *buf,
diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h
index 9a7a7f2..d77a7f8 100644
--- a/include/linux/mtd/mtd.h
+++ b/include/linux/mtd/mtd.h
@@ -194,13 +194,14 @@
 			  struct mtd_oob_ops *ops);
 	int (*get_fact_prot_info) (struct mtd_info *mtd, struct otp_info *buf,
 				   size_t len);
+	int (*read_fact_prot_reg) (struct mtd_info *mtd, loff_t from,
+				   size_t len, size_t *retlen, u_char *buf);
 
 	/* Backing device capabilities for this device
 	 * - provides mmap capabilities
 	 */
 	struct backing_dev_info *backing_dev_info;
 
-	int (*read_fact_prot_reg) (struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf);
 	int (*get_user_prot_info) (struct mtd_info *mtd, struct otp_info *buf, size_t len);
 	int (*read_user_prot_reg) (struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf);
 	int (*write_user_prot_reg) (struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf);
@@ -337,6 +338,13 @@
 	return mtd->get_fact_prot_info(mtd, buf, len);
 }
 
+static inline int mtd_read_fact_prot_reg(struct mtd_info *mtd, loff_t from,
+					 size_t len, size_t *retlen,
+					 u_char *buf)
+{
+	return mtd->read_fact_prot_reg(mtd, from, len, retlen, buf);
+}
+
 static inline struct mtd_info *dev_to_mtd(struct device *dev)
 {
 	return dev ? dev_get_drvdata(dev) : NULL;