2 files changed, 2 insertions, 4 deletions

diff --git a/drivers/mtd/mtdchar.c b/drivers/mtd/mtdchar.c
index 4e8e5fbc1e13..25bbbc3aa665 100644
--- a/drivers/mtd/mtdchar.c
+++ b/drivers/mtd/mtdchar.c
@@ -310,10 +310,6 @@ static ssize_t mtdchar_write(struct file *file, const char __user *buf, size_t c
                         ret = -EROFS;
                         break;
                 case MTD_FILE_MODE_OTP_USER:
-                        if (!mtd->write_user_prot_reg) {
-                                ret = -EOPNOTSUPP;
-                                break;
-                        }
                         ret = mtd_write_user_prot_reg(mtd, *ppos, len,
                                                       &retlen, kbuf);
                         break;
diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h
index e488cf910914..7cd56d2b9419 100644
--- a/include/linux/mtd/mtd.h
+++ b/include/linux/mtd/mtd.h
@@ -381,6 +381,8 @@ static inline int mtd_write_user_prot_reg(struct mtd_info *mtd, loff_t to,
                                           u_char *buf)
 {
         *retlen = 0;
+        if (!mtd->write_user_prot_reg)
+                return -EOPNOTSUPP;
         return mtd->write_user_prot_reg(mtd, to, len, retlen, buf);
 }