logfs: handle errors from get_mtd_device()

The get_mtd_device() function returns error pointers on failure and if we don't handle it, it leads to a crash. Signed-off-by: Dan Carpenter <error27@gmail.com> Signed-off-by: Joern Engel <joern@logfs.org>
Atom-X-Devs · May 7, 2010 · ccf31c1 · ccf31c1
1 parent 58e323c
commit ccf31c1
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/fs/logfs/dev_mtd.c b/fs/logfs/dev_mtd.c
@@ -250,5 +250,7 @@ int logfs_get_sb_mtd(struct file_system_type *type, int flags,
 	const struct logfs_device_ops *devops = &mtd_devops;
 
 	mtd = get_mtd_device(NULL, mtdnr);
+	if (IS_ERR(mtd))
+		return PTR_ERR(mtd);
 	return logfs_get_sb_device(type, flags, mtd, NULL, devops, mnt);
 }