Merge "soc: qcom: glink_probe: Use ref count for holding ssr context" (3f4e9b8b) · Commits · e / devices / android_kernel_xiaomi_nabu

drivers/soc/qcom/glink_probe.c

+19 −2

Original line number	Diff line number	Diff line
		@@ -78,6 +78,7 @@ struct glink_ssr {
		u32 seq_num;
		struct completion completion;
		struct work_struct unreg_work;
		struct kref refcount;
		};

		struct edge_info {
		@@ -95,6 +96,18 @@ struct edge_info {
		};
		LIST_HEAD(edge_infos);

		static void glink_ssr_release(struct kref *ref)
		{
		struct glink_ssr *ssr = container_of(ref, struct glink_ssr,
		refcount);
		struct glink_ssr_nb nb, tmp;

		list_for_each_entry_safe(nb, tmp, &ssr->notify_list, list)
		kfree(nb);

		kfree(ssr);
		}

		static void glink_ssr_ssr_unreg_work(struct work_struct *work)
		{
		struct glink_ssr *ssr = container_of(work, struct glink_ssr,
		@@ -104,9 +117,8 @@ static void glink_ssr_ssr_unreg_work(struct work_struct *work)
		list_for_each_entry_safe(nb, tmp, &ssr->notify_list, list) {
		subsys_notif_unregister_notifier(nb->ssr_register_handle,
		&nb->nb);
		kfree(nb);
		}
		kfree(ssr);
		kref_put(&ssr->refcount, glink_ssr_release);
		}

		static int glink_ssr_ssr_cb(struct notifier_block *this,
		@@ -121,6 +133,8 @@ static int glink_ssr_ssr_cb(struct notifier_block *this,
		if (!dev \|\| !ssr->ept)
		return NOTIFY_DONE;

		kref_get(&ssr->refcount);

		if (code == SUBSYS_AFTER_SHUTDOWN) {
		ssr->seq_num++;
		reinit_completion(&ssr->completion);
		@@ -139,6 +153,7 @@ static int glink_ssr_ssr_cb(struct notifier_block *this,
		if (ret) {
		GLINK_ERR(dev, "fail to send do cleanup to %s %d\n",
		nb->ssr_label, ret);
		kref_put(&ssr->refcount, glink_ssr_release);
		return NOTIFY_DONE;
		}

		@@ -147,6 +162,7 @@ static int glink_ssr_ssr_cb(struct notifier_block *this,
		GLINK_ERR(dev, "timeout waiting for cleanup resp\n");

		}
		kref_put(&ssr->refcount, glink_ssr_release);
		return NOTIFY_DONE;
		}

		@@ -242,6 +258,7 @@ static int glink_ssr_probe(struct rpmsg_device *rpdev)
		INIT_LIST_HEAD(&ssr->notify_list);
		init_completion(&ssr->completion);
		INIT_WORK(&ssr->unreg_work, glink_ssr_ssr_unreg_work);
		kref_init(&ssr->refcount);

		ssr->dev = &rpdev->dev;
		ssr->ept = rpdev->ept;