mtd: nand: correct the comment of function nand_block_isreserved()

Signed-off-by: Gu Zheng <guz.fnst@cn.fujitsu.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c
index 4cbd145..41585df 100644
--- a/drivers/mtd/nand/nand_base.c
+++ b/drivers/mtd/nand/nand_base.c
@@ -485,11 +485,11 @@
 }
 
 /**
- * nand_block_checkbad - [GENERIC] Check if a block is marked bad
+ * nand_block_isreserved - [GENERIC] Check if a block is marked reserved.
  * @mtd: MTD device structure
  * @ofs: offset from device start
  *
- * Check if the block is mark as reserved.
+ * Check if the block is marked as reserved.
  */
 static int nand_block_isreserved(struct mtd_info *mtd, loff_t ofs)
 {