[PATCH v3 13/18] bootstrap_read_devfs(): Check for errors from devfs_add_partition()

[Andrey Smirnov]

Check for errors returned by devfs_add_partition() and bail if there
are any.

Signed-off-by: Andrey Smirnov <andrew.smirnov at gmail.com>
---
 lib/bootstrap/devfs.c | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/lib/bootstrap/devfs.c b/lib/bootstrap/devfs.c
index 82c7d21..0c47cd2 100644
--- a/lib/bootstrap/devfs.c
+++ b/lib/bootstrap/devfs.c
@@ -82,10 +82,17 @@ void* bootstrap_read_devfs(char *devname, bool use_bb, int offset,
 	int ret;
 	int size = 0;
 	void *to, *header;
-	struct cdev *cdev;
+	struct cdev *cdev, *partition;
 	char *partname = "x";
 
-	devfs_add_partition(devname, offset, max_size, DEVFS_PARTITION_FIXED, partname);
+	partition = devfs_add_partition(devname, offset, max_size,
+					DEVFS_PARTITION_FIXED, partname);
+	if (IS_ERR(partition)) {
+		bootstrap_err("%s: failed to add partition (%ld)\n",
+			      devname, PTR_ERR(partition));
+		return NULL;
+	}
+
 	if (use_bb) {
 		dev_add_bb_dev(partname, "bbx");
 		partname = "bbx";
-- 
2.1.4