nvme: Suppress static analyis warning (9941a862) · Commits · 戴 / test

The ns->head is always valid, so we don't need to check for NULL. Reported-by:

drivers/nvme/host/core.c

+2 −5

Original line number	Diff line number	Diff line
		@@ -2961,8 +2961,6 @@ static void nvme_alloc_ns(struct nvme_ctrl *ctrl, unsigned nsid)

		static void nvme_ns_remove(struct nvme_ns *ns)
		{
		struct nvme_ns_head *head = ns->head;

		if (test_and_set_bit(NVME_NS_REMOVING, &ns->flags))
		return;

		@@ -2980,7 +2978,6 @@ static void nvme_ns_remove(struct nvme_ns *ns)

		mutex_lock(&ns->ctrl->subsys->lock);
		nvme_mpath_clear_current_path(ns);
		if (head)
		list_del_rcu(&ns->siblings);
		mutex_unlock(&ns->ctrl->subsys->lock);

		@@ -2988,7 +2985,7 @@ static void nvme_ns_remove(struct nvme_ns *ns)
		list_del_init(&ns->list);
		mutex_unlock(&ns->ctrl->namespaces_mutex);

		synchronize_srcu(&head->srcu);
		synchronize_srcu(&ns->head->srcu);
		nvme_put_ns(ns);
		}