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-rw-r--r--drivers/media/cec/cec-adap.c40
-rw-r--r--drivers/media/usb/pulse8-cec/pulse8-cec.c17
2 files changed, 40 insertions, 17 deletions
diff --git a/drivers/media/cec/cec-adap.c b/drivers/media/cec/cec-adap.c
index 9340435a94a0..6c95dc471d4c 100644
--- a/drivers/media/cec/cec-adap.c
+++ b/drivers/media/cec/cec-adap.c
@@ -380,7 +380,8 @@ static void cec_data_cancel(struct cec_data *data, u8 tx_status)
} else {
list_del_init(&data->list);
if (!(data->msg.tx_status & CEC_TX_STATUS_OK))
- data->adap->transmit_queue_sz--;
+ if (!WARN_ON(!data->adap->transmit_queue_sz))
+ data->adap->transmit_queue_sz--;
}
if (data->msg.tx_status & CEC_TX_STATUS_OK) {
@@ -432,6 +433,14 @@ static void cec_flush(struct cec_adapter *adap)
* need to do anything special in that case.
*/
}
+ /*
+ * If something went wrong and this counter isn't what it should
+ * be, then this will reset it back to 0. Warn if it is not 0,
+ * since it indicates a bug, either in this framework or in a
+ * CEC driver.
+ */
+ if (WARN_ON(adap->transmit_queue_sz))
+ adap->transmit_queue_sz = 0;
}
/*
@@ -456,7 +465,7 @@ int cec_thread_func(void *_adap)
bool timeout = false;
u8 attempts;
- if (adap->transmitting) {
+ if (adap->transmit_in_progress) {
int err;
/*
@@ -491,7 +500,7 @@ int cec_thread_func(void *_adap)
goto unlock;
}
- if (adap->transmitting && timeout) {
+ if (adap->transmit_in_progress && timeout) {
/*
* If we timeout, then log that. Normally this does
* not happen and it is an indication of a faulty CEC
@@ -500,14 +509,18 @@ int cec_thread_func(void *_adap)
* so much traffic on the bus that the adapter was
* unable to transmit for CEC_XFER_TIMEOUT_MS (2.1s).
*/
- pr_warn("cec-%s: message %*ph timed out\n", adap->name,
- adap->transmitting->msg.len,
- adap->transmitting->msg.msg);
+ if (adap->transmitting) {
+ pr_warn("cec-%s: message %*ph timed out\n", adap->name,
+ adap->transmitting->msg.len,
+ adap->transmitting->msg.msg);
+ /* Just give up on this. */
+ cec_data_cancel(adap->transmitting,
+ CEC_TX_STATUS_TIMEOUT);
+ } else {
+ pr_warn("cec-%s: transmit timed out\n", adap->name);
+ }
adap->transmit_in_progress = false;
adap->tx_timeouts++;
- /* Just give up on this. */
- cec_data_cancel(adap->transmitting,
- CEC_TX_STATUS_TIMEOUT);
goto unlock;
}
@@ -522,7 +535,8 @@ int cec_thread_func(void *_adap)
data = list_first_entry(&adap->transmit_queue,
struct cec_data, list);
list_del_init(&data->list);
- adap->transmit_queue_sz--;
+ if (!WARN_ON(!data->adap->transmit_queue_sz))
+ adap->transmit_queue_sz--;
/* Make this the current transmitting message */
adap->transmitting = data;
@@ -1085,11 +1099,11 @@ 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) {
diff --git a/drivers/media/usb/pulse8-cec/pulse8-cec.c b/drivers/media/usb/pulse8-cec/pulse8-cec.c
index ac88ade94cda..59609556d969 100644
--- a/drivers/media/usb/pulse8-cec/pulse8-cec.c
+++ b/drivers/media/usb/pulse8-cec/pulse8-cec.c
@@ -116,6 +116,7 @@ struct pulse8 {
unsigned int vers;
struct completion cmd_done;
struct work_struct work;
+ u8 work_result;
struct delayed_work ping_eeprom_work;
struct cec_msg rx_msg;
u8 data[DATA_SIZE];
@@ -137,8 +138,10 @@ static void pulse8_irq_work_handler(struct work_struct *work)
{
struct pulse8 *pulse8 =
container_of(work, struct pulse8, work);
+ u8 result = pulse8->work_result;
- switch (pulse8->data[0] & 0x3f) {
+ pulse8->work_result = 0;
+ switch (result & 0x3f) {
case MSGCODE_FRAME_DATA:
cec_received_msg(pulse8->adap, &pulse8->rx_msg);
break;
@@ -172,12 +175,12 @@ static irqreturn_t pulse8_interrupt(struct serio *serio, unsigned char data,
pulse8->escape = false;
} else if (data == MSGEND) {
struct cec_msg *msg = &pulse8->rx_msg;
+ u8 msgcode = pulse8->buf[0];
if (debug)
dev_info(pulse8->dev, "received: %*ph\n",
pulse8->idx, pulse8->buf);
- pulse8->data[0] = pulse8->buf[0];
- switch (pulse8->buf[0] & 0x3f) {
+ switch (msgcode & 0x3f) {
case MSGCODE_FRAME_START:
msg->len = 1;
msg->msg[0] = pulse8->buf[1];
@@ -186,14 +189,20 @@ static irqreturn_t pulse8_interrupt(struct serio *serio, unsigned char data,
if (msg->len == CEC_MAX_MSG_SIZE)
break;
msg->msg[msg->len++] = pulse8->buf[1];
- if (pulse8->buf[0] & MSGCODE_FRAME_EOM)
+ if (msgcode & MSGCODE_FRAME_EOM) {
+ WARN_ON(pulse8->work_result);
+ pulse8->work_result = msgcode;
schedule_work(&pulse8->work);
+ break;
+ }
break;
case MSGCODE_TRANSMIT_SUCCEEDED:
case MSGCODE_TRANSMIT_FAILED_LINE:
case MSGCODE_TRANSMIT_FAILED_ACK:
case MSGCODE_TRANSMIT_FAILED_TIMEOUT_DATA:
case MSGCODE_TRANSMIT_FAILED_TIMEOUT_LINE:
+ WARN_ON(pulse8->work_result);
+ pulse8->work_result = msgcode;
schedule_work(&pulse8->work);
break;
case MSGCODE_HIGH_ERROR:
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-25 14:36:15 +0000