OneNAND: Remove unused read_spareram

Remove unused read_spareram and add unlock_all as kernel does

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>

drivers/mtd/onenand/onenand_base.c

@@ -1010,7 +1010,7 @@ int onenand_bbt_read_oob(struct mtd_info *mtd, loff_t from,
 		if (ret)
 			break;
 
-		this->read_spareram(mtd, 0, ONENAND_SPARERAM, buf, column, thislen);
+		this->read_bufferram(mtd, 0, ONENAND_SPARERAM, buf, column, thislen);
 		read += thislen;
 		if (read == len)
 			break;
@@ -2104,8 +2104,6 @@ int onenand_scan(struct mtd_info *mtd, int maxchips)
 
 	if (!this->read_bufferram)
 		this->read_bufferram = onenand_read_bufferram;
-	if (!this->read_spareram)
-		this->read_spareram = onenand_read_bufferram;
 	if (!this->write_bufferram)
 		this->write_bufferram = onenand_write_bufferram;
 

include/linux/mtd/onenand.h

@@ -83,10 +83,9 @@ struct onenand_chip {
 			size_t len);
 	int (*wait) (struct mtd_info *mtd, int state);
 	int (*bbt_wait) (struct mtd_info *mtd, int state);
+	void (*unlock_all)(struct mtd_info *mtd);
 	int (*read_bufferram) (struct mtd_info *mtd, loff_t addr, int area,
 			       unsigned char *buffer, int offset, size_t count);
-	int (*read_spareram) (struct mtd_info *mtd, loff_t addr, int area,
-			       unsigned char *buffer, int offset, size_t count);
 	int (*write_bufferram) (struct mtd_info *mtd, loff_t addr, int area,
 				const unsigned char *buffer, int offset,
 				size_t count);