wireguard-linux/drivers/media/cec/core, branch stable

media: cec/core: add error-inj-tx-timeouts debugfs entry

2026-07-17T08:14:19Z

Add a new debugfs entry that makes it possible to do error injection of failing the next N transmits by a timeout. This can be used to test what happens in that case during the claiming of a free logical address. Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab

media: cec/core: cec-pin: toggle rx_toggle when arb lost

2026-07-17T08:14:16Z

If we inject an Arbitration Lost error, then manually toggle rx_toggle instead of waiting for cec_pin_to_idle(). When handling the Arbitration Lost error injection we are switching to TX mode, and as a result when cec_pin_to_idle() is called when the transmit ends it would never toggle rx_toggle since it is no longer in RX mode. Without this change the 'any,toggle rx-arb-lost' error injection would, once it is on, always stay on. Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab

media: cec/core: add a new CEC_LOG_ADDRS_FL_CONFIG_FAILED flag

2026-07-17T08:14:13Z

If claiming a logical address fails, then set the CEC_LOG_ADDRS_FL_CONFIG_FAILED flag. This makes it possible for userspace to detect this corner case. Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab

media: cec/core: flush stale STATE_CHANGE events

2026-07-17T08:14:10Z

If the physical address becomes invalid, then flush any old STATE_CHANGE events since those are no longer relevant. Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab

media: cec/core: drop cec_post_state_event call

2026-07-17T08:14:06Z

No need to call cec_post_state_event() if the next call is to cec_adap_unconfigure() since that will also call cec_post_state_event(). This fixes the case when, when the physical address is invalidated, you get two CEC_EVENT_STATE_CHANGE events: one with a non-zero log_addr_mask and one with a zero log_addr_mask. You just want to see the event with phys_addr set to f.f.f.f and log_addr_mask set to 0. Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab

media: cec/core: handle core events like normal events

2026-07-17T08:14:03Z

Currently there is a distinction between core events (CEC_EVENT_STATE_CHANGE and CEC_EVENT_LOST_MSGS) and other events. The core events do not require memory allocations, so are a bit faster, but they are also limited to just a single event: if a new event comes in, then that replaces the old one. It's all overly complicated, and with only one state change event it is easy to miss state changes. So just drop that optimization, and allow for up to 3 state change events. Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab

media: cec/core: drop ABORTED/TIMEOUT check

2026-07-17T08:14:00Z

When claiming a logical address, don't break off the process when the transmit returns ABORTED or TIMEOUT. Just do another attempt in that case. Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab

media: cec/core: max_retries -> max_attempts

2026-07-17T08:13:57Z

Rename max_retries to max_attempts. This counter really is for the number of attempts, not the number of retries. Also increase the number of attempts from 2 to 3. Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab

media: cec: Serialize exclusive follower delivery

2026-07-10T07:05:38Z

cec_receive_notify() reads the exclusive follower pointer without the adapter lock. Serialize the no-follower check and message delivery against mode changes and release. Fixes: 9881fe0ca187 ("[media] cec: add HDMI CEC framework (adapter)") Cc: stable@vger.kernel.org Signed-off-by: Ruoyu Wang Signed-off-by: Hans Verkuil

media: cec: core: Use predefined time multiplier

2026-07-10T07:05:38Z

Instead of relying on custom MS_TO_US() macro, use existing time multiplier. Signed-off-by: Andy Shevchenko Signed-off-by: Hans Verkuil