usb: class: cdc_acm: Add check for tx_irq_ena in tx_ready function

cdc_acm_irq_tx_ready was not checking if its interrupt was enabled. This causes spurious tx irq handler calls. Signed-off-by: Eric Johnson <[email protected]>
yegorich · Sep 1, 2021 · 20b710a · 20b710a
1 parent e54d255
commit 20b710a
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/subsys/usb/class/cdc_acm.c b/subsys/usb/class/cdc_acm.c
@@ -588,7 +588,7 @@ static int cdc_acm_irq_tx_ready(const struct device *dev)
 {
 	struct cdc_acm_dev_data_t * const dev_data = DEV_DATA(dev);
 
-	if (dev_data->tx_ready) {
+	if (dev_data->tx_irq_ena && dev_data->tx_ready) {
 		return 1;
 	}