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Commit 4d7c1d3f authored by zhengbin's avatar zhengbin Committed by Jens Axboe
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block: fix NULL pointer dereference in register_disk 



If __device_add_disk-->bdi_register_owner-->bdi_register-->
bdi_register_va-->device_create_vargs fails, bdi->dev is still
NULL, __device_add_disk-->register_disk will visit bdi->dev->kobj.
This patch fixes that.

Signed-off-by: default avatarzhengbin <zhengbin13@huawei.com>
Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent dce30ca9
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