We never checked for errors on add_disk() as this function
returned void. Now that is fixed.
So add error handling support for add_disk().
Signed-off-by: Wu Bo <wubo40@xxxxxxxxxx>
---
drivers/block/brd.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/drivers/block/brd.c b/drivers/block/brd.c
index aa04727..34a0d9c 100644
--- a/drivers/block/brd.c
+++ b/drivers/block/brd.c
@@ -370,6 +370,7 @@ static int brd_alloc(int i)
struct brd_device *brd;
struct gendisk *disk;
char buf[DISK_NAME_LEN];
+ int err;
mutex_lock(&brd_devices_mutex);
list_for_each_entry(brd, &brd_devices, brd_list) {
@@ -420,10 +421,14 @@ static int brd_alloc(int i)
/* Tell the block layer that this is not a rotational device */
blk_queue_flag_set(QUEUE_FLAG_NONROT, disk->queue);
blk_queue_flag_clear(QUEUE_FLAG_ADD_RANDOM, disk->queue);
- add_disk(disk);
+ err = add_disk(disk);
+ if (err)
+ goto out_cleanup_disk;
return 0;
+out_cleanup_disk:
+ blk_cleanup_disk(disk);
out_free_dev:
mutex_lock(&brd_devices_mutex);
list_del(&brd->brd_list);
--
1.8.3.1
