mtd: OneNAND: Fix onenand_block_markbad

commit dfe64e2c89731a3f9950d7acd8681b68df2bae03
    Author: Sergey Lapin <slapin@ossfans.org>
    Date:   Mon Jan 14 03:46:50 2013 +0000

        mtd: resync with Linux-3.7.1

modified onenand_block_markbad to call mtd_block_markbad,
but as _block_markbad function pointer used by mtd_block_markbad
to do actual job is by default pointing back to
onenand_block_markbad there is no way this function ever
finishes its job.
Fix it by changing function body according current (4.12-rc6)
linux implementation.
Tested on IGEPv2 board with Muxed OneNAND(DDP) 512MB containing
several unerasable blocks this function marked bad.

Signed-off-by: Ladislav Michl <ladis@linux-mips.org>

drivers/mtd/onenand/onenand_base.c

@@ -1919,6 +1919,7 @@ static int onenand_default_block_markbad(struct mtd_info *mtd, loff_t ofs)
  */
 int onenand_block_markbad(struct mtd_info *mtd, loff_t ofs)
 {
+	struct onenand_chip *this = mtd->priv;
 	int ret;
 
 	ret = onenand_block_isbad(mtd, ofs);
@@ -1929,7 +1930,10 @@ int onenand_block_markbad(struct mtd_info *mtd, loff_t ofs)
 		return ret;
 	}
 
-	ret = mtd_block_markbad(mtd, ofs);
+	onenand_get_device(mtd, FL_WRITING);
+	ret = this->block_markbad(mtd, ofs);
+	onenand_release_device(mtd);
+
 	return ret;
 }