[media] cec: set unclaimed addresses to CEC_LOG_ADDR_INVALID

Up to 4 logical addresses can be claimed. Make sure that any
unclaimed logical addresses are set to CEC_LOG_ADDR_INVALID as
per the documentation.

Take special care in the unregistered case: when falling back to
unregistered num_log_addrs may be > 1, so mark those as invalid.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

diff --git a/drivers/staging/media/cec/cec-adap.c b/drivers/staging/media/cec/cec-adap.c
index 2458a6c..6cc7d79 100644 (file)
--- a/drivers/staging/media/cec/cec-adap.c
+++ b/drivers/staging/media/cec/cec-adap.c
@@ -1056,6 +1056,8 @@ configured:
                /* Fall back to unregistered */
                las->log_addr[0] = CEC_LOG_ADDR_UNREGISTERED;
                las->log_addr_mask = 1 << las->log_addr[0];
+               for (i = 1; i < las->num_log_addrs; i++)
+                       las->log_addr[i] = CEC_LOG_ADDR_INVALID;
        }
        adap->is_configured = true;
        adap->is_configuring = false;
@@ -1074,6 +1076,8 @@ configured:
                        cec_report_features(adap, i);
                cec_report_phys_addr(adap, i);
        }
+       for (i = las->num_log_addrs; i < CEC_MAX_LOG_ADDRS; i++)
+               las->log_addr[i] = CEC_LOG_ADDR_INVALID;
        mutex_lock(&adap->lock);
        adap->kthread_config = NULL;
        mutex_unlock(&adap->lock);