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rpmsg: glink: Avoid infinite loop on intent for missing channel 

[ Upstream commit 3e74ec2f39 ]

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: dacbb35e93 ("rpmsg: glink: Receive and store the remote intent buffers")
Signed-off-by: Bjorn Andersson <quic_bjorande@quicinc.com>
Reviewed-by: Chris Lew <quic_clew@quicinc.com>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230214234231.2069751-1-quic_bjorande@quicinc.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Bjorn Andersson 2023-02-14 15:42:31 -08:00 committed by Greg Kroah-Hartman
parent 1477b00ff5
commit fec6a375fd
1 changed files with 1 additions and 0 deletions
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1
drivers/rpmsg/qcom_glink_native.c
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@ -929,6 +929,7 @@ 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");
qcom_glink_rx_advance(glink, ALIGN(msglen, 8));
return;
}