[PATCH 08/18] cdev: do not dereference partname for non-partitions

[Ahmad Fatoum]

Except for this one place, the rest of the code can deal with cdev links
to non-partitions. Switch the function over to use streq_ptr, so we can
use cdev master links without risking a NULL pointer dereference.

Signed-off-by: Ahmad Fatoum <a.fatoum at pengutronix.de>
---
 fs/devfs-core.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/fs/devfs-core.c b/fs/devfs-core.c
index e32bce9e307e..04bf866a67e0 100644
--- a/fs/devfs-core.c
+++ b/fs/devfs-core.c
@@ -192,13 +192,11 @@ struct cdev *device_find_partition(struct device *dev, const char *name)
 	list_for_each_entry(cdev, &dev->cdevs, devices_list) {
 		struct cdev *cdevl;
 
-		if (!cdev->partname)
-			continue;
-		if (!strcmp(cdev->partname, name))
+		if (streq_ptr(cdev->partname, name))
 			return cdev;
 
 		list_for_each_entry(cdevl, &cdev->links, link_entry) {
-			if (!strcmp(cdevl->partname, name))
+			if (streq_ptr(cdevl->partname, name))
 				return cdev_readlink(cdevl);
 		}
 	}
-- 
2.39.5