Commit b9504247 authored Jun 25, 2017 by Boris Brezillon Committed by Brian Norris Jul 07, 2017

mtd: Fix check in mtd_unpoint()



The code checks that ->_point is not NULL, but we should actually check
->_unpoint value which is dereferenced a few lines after the check.

Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>

parent c169e3d3

drivers/mtd/mtdcore.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -991,7 +991,7 @@ EXPORT_SYMBOL_GPL(mtd_point);
		/* We probably shouldn't allow XIP if the unpoint isn't a NULL */
		int mtd_unpoint(struct mtd_info *mtd, loff_t from, size_t len)
		{
		if (!mtd->_point)
		if (!mtd->_unpoint)
		return -EOPNOTSUPP;
		if (from < 0 \|\| from >= mtd->size \|\| len > mtd->size - from)
		return -EINVAL;