mtd: introduce mtd_get_user_prot_info interface

Signed-off-by: NArtem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: NDavid Woodhouse <David.Woodhouse@intel.com>

drivers/mtd/mtdchar.c

@@ -930,7 +930,7 @@ static int mtdchar_ioctl(struct file *file, u_int cmd, u_long arg)
 			break;
 		case MTD_FILE_MODE_OTP_USER:
 			if (mtd->get_user_prot_info)
-				ret = mtd->get_user_prot_info(mtd, buf, 4096);
+				ret = mtd_get_user_prot_info(mtd, buf, 4096);
 			break;
 		default:
 			break;

drivers/mtd/mtdpart.c

@@ -160,7 +160,7 @@ static int part_get_user_prot_info(struct mtd_info *mtd,
 		struct otp_info *buf, size_t len)
 {
 	struct mtd_part *part = PART(mtd);
-	return part->master->get_user_prot_info(part->master, buf, len);
+	return mtd_get_user_prot_info(part->master, buf, len);
 }
 
 static int part_read_fact_prot_reg(struct mtd_info *mtd, loff_t from,

include/linux/mtd/mtd.h

@@ -196,13 +196,14 @@ struct mtd_info {
 				   size_t len);
 	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);
 
 	/* Backing device capabilities for this device
 	 * - provides mmap capabilities
 	 */
 	struct backing_dev_info *backing_dev_info;
 
-	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);
 	int (*lock_user_prot_reg) (struct mtd_info *mtd, loff_t from, size_t len);
@@ -345,6 +346,13 @@ static inline int mtd_read_fact_prot_reg(struct mtd_info *mtd, loff_t from,
 	return mtd->read_fact_prot_reg(mtd, from, len, retlen, buf);
 }
 
+static inline int mtd_get_user_prot_info(struct mtd_info *mtd,
+					 struct otp_info *buf,
+					 size_t len)
+{
+	return mtd->get_user_prot_info(mtd, buf, len);
+}
+
 static inline struct mtd_info *dev_to_mtd(struct device *dev)
 {
 	return dev ? dev_get_drvdata(dev) : NULL;