drivers: can: mcux: flexcan: abort transfers before entering freeze mode
Abort any pending transmissions before entering freeze mode and notify the
senders.
Fixes: #50545
Signed-off-by: Henrik Brix Andersen <hebad@vestas.com>
diff --git a/drivers/can/can_mcux_flexcan.c b/drivers/can/can_mcux_flexcan.c
index 1a03b52..9c936f3 100644
--- a/drivers/can/can_mcux_flexcan.c
+++ b/drivers/can/can_mcux_flexcan.c
@@ -220,12 +220,31 @@
{
const struct mcux_flexcan_config *config = dev->config;
struct mcux_flexcan_data *data = dev->data;
+ can_tx_callback_t function;
+ void *arg;
+ int alloc;
int err;
if (!data->started) {
return -EALREADY;
}
+ data->started = false;
+
+ /* Abort any pending TX frames before entering freeze mode */
+ for (alloc = 0; alloc < MCUX_FLEXCAN_MAX_TX; alloc++) {
+ function = data->tx_cbs[alloc].function;
+ arg = data->tx_cbs[alloc].arg;
+
+ if (atomic_test_and_clear_bit(data->tx_allocs, alloc)) {
+ FLEXCAN_TransferAbortSend(config->base, &data->handle,
+ ALLOC_IDX_TO_TXMB_IDX(alloc));
+
+ function(dev, -ENETDOWN, arg);
+ k_sem_give(&data->tx_allocs_sem);
+ }
+ }
+
FLEXCAN_EnterFreezeMode(config->base);
if (config->phy != NULL) {
@@ -236,8 +255,6 @@
}
}
- data->started = false;
-
return 0;
}
