nvme: check return value of init_srcu_struct function
Also add error flow in case srcu initialization function fails.
Signed-off-by: Max Gurtovoy <maxg@mellanox.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index 695e52a..b09940c 100644
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -2832,7 +2832,9 @@ static struct nvme_ns_head *nvme_alloc_ns_head(struct nvme_ctrl *ctrl,
goto out_free_head;
head->instance = ret;
INIT_LIST_HEAD(&head->list);
- init_srcu_struct(&head->srcu);
+ ret = init_srcu_struct(&head->srcu);
+ if (ret)
+ goto out_ida_remove;
head->subsys = ctrl->subsys;
head->ns_id = nsid;
kref_init(&head->ref);
@@ -2854,6 +2856,7 @@ static struct nvme_ns_head *nvme_alloc_ns_head(struct nvme_ctrl *ctrl,
return head;
out_cleanup_srcu:
cleanup_srcu_struct(&head->srcu);
+out_ida_remove:
ida_simple_remove(&ctrl->subsys->ns_ida, head->instance);
out_free_head:
kfree(head);