From: Boris Brezillon <boris.brezillon@free-electrons.com>
Date: Sun, 25 Jun 2017 18:22:57 +0000 (+0200)
Subject: mtd: Fix check in mtd_unpoint()
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=b9504247a6eb2bd68e3f620ca1f3fbe7309123ea;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

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>
---

diff --git a/drivers/mtd/mtdcore.c b/drivers/mtd/mtdcore.c
index 1517da3ddd7d..956382cea256 100644
--- a/drivers/mtd/mtdcore.c
+++ b/drivers/mtd/mtdcore.c
@@ -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;