1 files changed, 2 insertions, 0 deletions

diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h
index 7e35755f6931..1a81fde8f333 100644
--- a/include/linux/mtd/mtd.h
+++ b/include/linux/mtd/mtd.h
@@ -447,6 +447,8 @@ static inline int mtd_block_isbad(struct mtd_info *mtd, loff_t ofs)
 
 static inline int mtd_block_markbad(struct mtd_info *mtd, loff_t ofs)
 {
+        if (!mtd->block_markbad)
+                return -EOPNOTSUPP;
         return mtd->block_markbad(mtd, ofs);
 }