diff options
Diffstat (limited to 'mm/backing-dev.c')
-rw-r--r-- | mm/backing-dev.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/mm/backing-dev.c b/mm/backing-dev.c index f2e574dbc30..2a56124dbc2 100644 --- a/mm/backing-dev.c +++ b/mm/backing-dev.c | |||
@@ -176,6 +176,9 @@ int bdi_register(struct backing_dev_info *bdi, struct device *parent, | |||
176 | int ret = 0; | 176 | int ret = 0; |
177 | struct device *dev; | 177 | struct device *dev; |
178 | 178 | ||
179 | if (WARN_ON(bdi->dev)) | ||
180 | goto exit; | ||
181 | |||
179 | va_start(args, fmt); | 182 | va_start(args, fmt); |
180 | dev = device_create_vargs(bdi_class, parent, MKDEV(0, 0), bdi, fmt, args); | 183 | dev = device_create_vargs(bdi_class, parent, MKDEV(0, 0), bdi, fmt, args); |
181 | va_end(args); | 184 | va_end(args); |