Commit c7c182d4 authored by Arun Kumar Neelakantam's avatar Arun Kumar Neelakantam Committed by Bjorn Andersson
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rpmsg: glink: Remove the rpmsg dev in close_ack 



Un-register and register of rpmsg driver is sending invalid open_ack
on closed channel.

To avoid sending invalid open_ack case unregister the rpmsg device
after receiving the local_close_ack from remote side.

Signed-off-by: default avatarDeepak Kumar Singh <deesin@codeaurora.org>
Signed-off-by: default avatarArun Kumar Neelakantam <aneela@codeaurora.org>
[bjorn: s/strlcpy/strscpy/]
Signed-off-by: default avatarBjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/1596086296-28529-5-git-send-email-deesin@codeaurora.org
parent 8956927f

drivers/rpmsg/qcom_glink_native.c

+12 −0
Original line number Diff line number Diff line
@@ -1524,6 +1524,7 @@ static void qcom_glink_rx_close(struct qcom_glink *glink, unsigned int rcid) 


		rpmsg_unregister_device(glink->dev, &chinfo);

	}

	channel->rpdev = NULL;



	qcom_glink_send_close_ack(glink, channel->rcid);
@@ -1537,6 +1538,7 @@ static void qcom_glink_rx_close(struct qcom_glink *glink, unsigned int rcid) 


static void qcom_glink_rx_close_ack(struct qcom_glink *glink, unsigned int lcid)

{

	struct rpmsg_channel_info chinfo;

	struct glink_channel *channel;

	unsigned long flags;
@@ -1551,6 +1553,16 @@ static void qcom_glink_rx_close_ack(struct qcom_glink *glink, unsigned int lcid) 
	channel->lcid = 0;

	spin_unlock_irqrestore(&glink->idr_lock, flags);



	/* Decouple the potential rpdev from the channel */

	if (channel->rpdev) {

		strscpy(chinfo.name, channel->name, sizeof(chinfo.name));

		chinfo.src = RPMSG_ADDR_ANY;

		chinfo.dst = RPMSG_ADDR_ANY;



		rpmsg_unregister_device(glink->dev, &chinfo);

	}

	channel->rpdev = NULL;



	kref_put(&channel->refcount, qcom_glink_channel_release);

}