rpmsg: glink: remove duplicate code for rpmsg device remove

rpmsg device remove code is duplicated in at-least 2-3 places, add a
helper function to remove this duplicated code.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20250822100043.2604794-3-srinivas.kandagatla@oss.qualcomm.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>

Author: Srinivas Kandagatla

drivers/rpmsg/qcom_glink_native.c

@@ -1395,26 +1395,31 @@ static int qcom_glink_announce_create(struct rpmsg_device *rpdev)
 	return 0;
 }
 
+static void qcom_glink_remove_rpmsg_device(struct qcom_glink *glink, struct glink_channel *channel)
+{
+	struct rpmsg_channel_info chinfo;
+
+	if (channel->rpdev) {
+		strscpy_pad(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;
+}
+
 static void qcom_glink_destroy_ept(struct rpmsg_endpoint *ept)
 {
 	struct glink_channel *channel = to_glink_channel(ept);
 	struct qcom_glink *glink = channel->glink;
-	struct rpmsg_channel_info chinfo;
 	unsigned long flags;
 
 	spin_lock_irqsave(&channel->recv_lock, flags);
 	channel->ept.cb = NULL;
 	spin_unlock_irqrestore(&channel->recv_lock, flags);
 
 	/* Decouple the potential rpdev from the channel */
-	if (channel->rpdev) {
-		strscpy_pad(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;
+	qcom_glink_remove_rpmsg_device(glink, channel);
 
 	qcom_glink_send_close_req(glink, channel);
 }
@@ -1705,7 +1710,6 @@ static int qcom_glink_rx_open(struct qcom_glink *glink, unsigned int rcid,
 
 static void qcom_glink_rx_close(struct qcom_glink *glink, unsigned int rcid)
 {
-	struct rpmsg_channel_info chinfo;
 	struct glink_channel *channel;
 	unsigned long flags;
 
@@ -1721,14 +1725,7 @@ static void qcom_glink_rx_close(struct qcom_glink *glink, unsigned int rcid)
 	/* cancel pending rx_done work */
 	cancel_work_sync(&channel->intent_work);
 
-	if (channel->rpdev) {
-		strscpy_pad(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;
+	qcom_glink_remove_rpmsg_device(glink, channel);
 
 	qcom_glink_send_close_ack(glink, channel);
 
@@ -1742,7 +1739,6 @@ 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;
 
@@ -1764,14 +1760,7 @@ static void qcom_glink_rx_close_ack(struct qcom_glink *glink, unsigned int lcid)
 	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;
+	qcom_glink_remove_rpmsg_device(glink, channel);
 
 	kref_put(&channel->refcount, qcom_glink_channel_release);
 }