The patch below does not apply to the 5.5-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to stable@vger.kernel.org.
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
From 01d4fb115470e9f88a58975fe157a9e8b214dfe5 Mon Sep 17 00:00:00 2001
From: Hans Verkuil hverkuil-cisco@xs4all.nl Date: Wed, 4 Dec 2019 08:52:08 +0100 Subject: [PATCH] media: cec: CEC 2.0-only bcast messages were ignored
Some messages are allowed to be a broadcast message in CEC 2.0 only, and should be ignored by CEC 1.4 devices.
Unfortunately, the check was wrong, causing such messages to be marked as invalid under CEC 2.0.
Signed-off-by: Hans Verkuil hverkuil-cisco@xs4all.nl Cc: stable@vger.kernel.org # for v4.10 and up Signed-off-by: Mauro Carvalho Chehab mchehab+huawei@kernel.org
diff --git a/drivers/media/cec/cec-adap.c b/drivers/media/cec/cec-adap.c index 9340435a94a0..e90c30dac68b 100644 --- a/drivers/media/cec/cec-adap.c +++ b/drivers/media/cec/cec-adap.c @@ -1085,11 +1085,11 @@ void cec_received_msg_ts(struct cec_adapter *adap, valid_la = false; else if (!cec_msg_is_broadcast(msg) && !(dir_fl & DIRECTED)) valid_la = false; - else if (cec_msg_is_broadcast(msg) && !(dir_fl & BCAST1_4)) + else if (cec_msg_is_broadcast(msg) && !(dir_fl & BCAST)) valid_la = false; else if (cec_msg_is_broadcast(msg) && - adap->log_addrs.cec_version >= CEC_OP_CEC_VERSION_2_0 && - !(dir_fl & BCAST2_0)) + adap->log_addrs.cec_version < CEC_OP_CEC_VERSION_2_0 && + !(dir_fl & BCAST1_4)) valid_la = false; } if (valid_la && min_len) {