[PATCH 4.4 50/73] mtd: maps: sa1100-flash: potential NULL dereference

Greg Kroah-Hartman
2016-09-28T09:30:32Z

From: Dan Carpenter <dan.carpenter@oracle.com>

commit dc01a28d80a42cef08c94dfc595565aaebe46d15 upstream.

We check for NULL but then dereference "info->mtd" on the next line.

Fixes: 72169755cf36 ('mtd: maps: sa1100-flash: show parent device in sysfs')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
drivers/mtd/maps/sa1100-flash.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)

--- a/drivers/mtd/maps/sa1100-flash.c
+++ b/drivers/mtd/maps/sa1100-flash.c
@@ -230,8 +230,10 @@ static struct sa_info *sa1100_setup_mtd(

info->mtd = mtd_concat_create(cdev, info->num_subdev,
plat->name);
- if (info->mtd == NULL)
+ if (info->mtd == NULL) {
ret = -ENXIO;
+ goto err;
+ }
}
info->mtd->dev.parent = &pdev->dev;