rpmsg: smd: Use announce_create to process any receive work (0d72038c) · Commits · 戴 / test

It is possible that incoming data arrives before the client driver has reached a point in the probe method where adequate context for handling the incoming message has been established. In the event that the client's callback function returns an error the message will be left on the FIFO and by invoking the receive handler after the device has been probed the message will be picked off the FIFO and the callback invoked again. Signed-off-by:

Bjorn Andersson <bjorn.andersson@linaro.org>

drivers/rpmsg/qcom_smd.c

+18 −0

Original line number	Diff line number	Diff line
		@@ -997,8 +997,26 @@ static struct device_node qcom_smd_match_channel(struct device_node edge_node,
		return NULL;
		}

		static int qcom_smd_announce_create(struct rpmsg_device *rpdev)
		{
		struct qcom_smd_endpoint *qept = to_smd_endpoint(rpdev->ept);
		struct qcom_smd_channel *channel = qept->qsch;
		unsigned long flags;
		bool kick_state;

		spin_lock_irqsave(&channel->recv_lock, flags);
		kick_state = qcom_smd_channel_intr(channel);
		spin_unlock_irqrestore(&channel->recv_lock, flags);

		if (kick_state)
		schedule_work(&channel->edge->state_work);

		return 0;
		}

		static const struct rpmsg_device_ops qcom_smd_device_ops = {
		.create_ept = qcom_smd_create_ept,
		.announce_create = qcom_smd_announce_create,
		};

		static const struct rpmsg_endpoint_ops qcom_smd_endpoint_ops = {

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