From: Nathael Pajani <nathael.pajani@ed3l.fr>
Date: Thu, 15 Jun 2017 07:00:40 +0000 (+0200)
Subject: Echo on serial must be only a "best effort" and not mangle with ongoing transmissions
X-Git-Url: http://git.techno-innov.fr/?a=commitdiff_plain;h=9dbe4206d777273efdb9a118b78cfef0f9a3149b;p=soft%2Flpc82x%2Fcore

Echo on serial must be only a "best effort" and not mangle with ongoing transmissions
---

diff --git a/drivers/serial.c b/drivers/serial.c
index 47dd72c..f5e561d 100644
--- a/drivers/serial.c
+++ b/drivers/serial.c
@@ -105,8 +105,10 @@ static void uart_check_rx(struct uart_device* uart, uint32_t intr)
 			/* Call the Rx callback */
 			uart->rx_callback(data);
 		} else {
-			/* Echo */
-			uart->regs->tx_data = data;
+			/* Echo ? */
+			if (!uart->sending) {
+				uart->regs->tx_data = data;
+			}
 		}
 	}
 	/* FIXME : handle RX erors */