mtd: introduce mtd_read_user_prot_reg interface

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

3 files changed, 12 insertions, 4 deletions

diff --git a/drivers/mtd/mtdchar.c b/drivers/mtd/mtdchar.c
index 002a8b5428cc..6aa3fb4a0292 100644
--- a/drivers/mtd/mtdchar.c
+++ b/drivers/mtd/mtdchar.c
@@ -217,7 +217,8 @@ static ssize_t mtdchar_read(struct file *file, char __user *buf, size_t count,
                                                      &retlen, kbuf);
                         break;
                 case MTD_FILE_MODE_OTP_USER:
-                        ret = mtd->read_user_prot_reg(mtd, *ppos, len, &retlen, kbuf);
+                        ret = mtd_read_user_prot_reg(mtd, *ppos, len,
+                                                     &retlen, kbuf);
                         break;
                 case MTD_FILE_MODE_RAW:
                 {
diff --git a/drivers/mtd/mtdpart.c b/drivers/mtd/mtdpart.c
index bf1ab56afb8e..f018373ef3b4 100644
--- a/drivers/mtd/mtdpart.c
+++ b/drivers/mtd/mtdpart.c
@@ -152,8 +152,7 @@ static int part_read_user_prot_reg(struct mtd_info *mtd, loff_t from,
                 size_t len, size_t *retlen, u_char *buf)
 {
         struct mtd_part *part = PART(mtd);
-        return part->master->read_user_prot_reg(part->master, from,
-                                        len, retlen, buf);
+        return mtd_read_user_prot_reg(part->master, from, len, retlen, buf);
 }
 
 static int part_get_user_prot_info(struct mtd_info *mtd,
diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h
index ff0a3a18f397..855fb7fab697 100644
--- a/include/linux/mtd/mtd.h
+++ b/include/linux/mtd/mtd.h
@@ -198,13 +198,14 @@ struct mtd_info {
                                    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);
 
         /* Backing device capabilities for this device
          * - provides mmap capabilities
          */
         struct backing_dev_info *backing_dev_info;
 
-        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);
 
@@ -353,6 +354,13 @@ static inline int mtd_get_user_prot_info(struct mtd_info *mtd,
         return mtd->get_user_prot_info(mtd, buf, len);
 }
 
+static inline int mtd_read_user_prot_reg(struct mtd_info *mtd, loff_t from,
+                                         size_t len, size_t *retlen,
+                                         u_char *buf)
+{
+        return mtd->read_user_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;