1 files changed, 26 insertions, 5 deletions

diff --git a/drivers/mtd/mtdpart.c b/drivers/mtd/mtdpart.c
index b8043a9ba32d..dc6558568876 100644
--- a/drivers/mtd/mtdpart.c
+++ b/drivers/mtd/mtdpart.c
@@ -1,12 +1,24 @@
 /*
  * Simple MTD partitioning layer
  *
- * (C) 2000 Nicolas Pitre <nico@fluxnic.net>
+ * Copyright © 2000 Nicolas Pitre <nico@fluxnic.net>
+ * Copyright © 2002 Thomas Gleixner <gleixner@linutronix.de>
+ * Copyright © 2000-2010 David Woodhouse <dwmw2@infradead.org>
  *
- * This code is GPL
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  *
- *      02-21-2002      Thomas Gleixner <gleixner@autronix.de>
- *                      added support for read_oob, write_oob
  */
 
 #include <linux/module.h>
@@ -17,7 +29,6 @@
 #include <linux/kmod.h>
 #include <linux/mtd/mtd.h>
 #include <linux/mtd/partitions.h>
-#include <linux/mtd/compatmac.h>
 
 /* Our partition linked list */
 static LIST_HEAD(mtd_partitions);
@@ -264,6 +275,14 @@ static int part_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
         return part->master->unlock(part->master, ofs + part->offset, len);
 }
 
+static int part_is_locked(struct mtd_info *mtd, loff_t ofs, uint64_t len)
+{
+        struct mtd_part *part = PART(mtd);
+        if ((len + ofs) > mtd->size)
+                return -EINVAL;
+        return part->master->is_locked(part->master, ofs + part->offset, len);
+}
+
 static void part_sync(struct mtd_info *mtd)
 {
         struct mtd_part *part = PART(mtd);
@@ -402,6 +421,8 @@ static struct mtd_part *add_one_partition(struct mtd_info *master,
                 slave->mtd.lock = part_lock;
         if (master->unlock)
                 slave->mtd.unlock = part_unlock;
+        if (master->is_locked)
+                slave->mtd.is_locked = part_is_locked;
         if (master->block_isbad)
                 slave->mtd.block_isbad = part_block_isbad;
         if (master->block_markbad)