[PATCH] rpmsg: glink: Avoid infinite loop on intent for missing channel

[Bjorn Andersson]

In the event that an intent advertisement arrives on an unknown channel
the fifo is not advanced, resulting in the same message being handled
over and over.

Fixes: dacbb35e930f ("rpmsg: glink: Receive and store the remote intent buffers")
Signed-off-by: Bjorn Andersson <quic_bjorande@xxxxxxxxxxx>
---
 drivers/rpmsg/qcom_glink_native.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/rpmsg/qcom_glink_native.c b/drivers/rpmsg/qcom_glink_native.c
index f36740cb6866..7b1320b1579e 100644
--- a/drivers/rpmsg/qcom_glink_native.c
+++ b/drivers/rpmsg/qcom_glink_native.c
@@ -946,12 +946,12 @@ static void qcom_glink_handle_intent(struct qcom_glink *glink,
 	spin_unlock_irqrestore(&glink->idr_lock, flags);
 	if (!channel) {
 		dev_err(glink->dev, "intents for non-existing channel\n");
-		return;
+		goto advance_rx;
 	}
 
 	msg = kmalloc(msglen, GFP_ATOMIC);
 	if (!msg)
-		return;
+		goto advance_rx;
 
 	qcom_glink_rx_peak(glink, msg, 0, msglen);
 
@@ -973,6 +973,7 @@ static void qcom_glink_handle_intent(struct qcom_glink *glink,
 	}
 
 	kfree(msg);
+advance_rx:
 	qcom_glink_rx_advance(glink, ALIGN(msglen, 8));
 }
 
-- 
2.37.3