[PATCH 10/15] mtd: Pass attribute group to device_add_disk

Fam Zheng
2016-08-17T07:15:10Z

Previously after device_add_disk returns, the KOBJ_ADD uevent is already
emitted. Adding attributes after that is a poor usage of kobject, and
in practice may result in race conditions with userspace, for
example udev checks availability of certain attributes and initializes
/dev entries conditionally.

device_add_disk can handle adding attribute group better, so use it.

Signed-off-by: Fam Zheng <famz@redhat.com>
---
drivers/mtd/mtd_blkdevs.c | 8 +-------
1 file changed, 1 insertion(+), 7 deletions(-)

diff --git a/drivers/mtd/mtd_blkdevs.c b/drivers/mtd/mtd_blkdevs.c
index 4ff9381..fc9265d 100644
--- a/drivers/mtd/mtd_blkdevs.c
+++ b/drivers/mtd/mtd_blkdevs.c
@@ -434,13 +434,7 @@ int add_mtd_blktrans_dev(struct mtd_blktrans_dev *new)
if (new->readonly)
set_disk_ro(gd, 1);

- device_add_disk(&new->mtd->dev, gd, NULL);
-
- if (new->disk_attributes) {
- ret = sysfs_create_group(&disk_to_dev(gd)->kobj,
- new->disk_attributes);
- WARN_ON(ret);
- }
+ device_add_disk(&new->mtd->dev, gd, new->disk_attributes);
return 0;
error4:
blk_cleanup_queue(new->rq);
--
2.7.4