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[PATCH] tty/serial: atmel: reschedule TX after RX was started

From: Razvan Stefanescu <hidden>
Date: 2019-08-13 07:40:37
Also in: linux-serial, lkml
Subsystem: microchip at91 serial driver, the rest, tty layer and serial drivers · Maintainers: Richard Genoud, Linus Torvalds, Greg Kroah-Hartman, Jiri Slaby

When half-duplex RS485 communication is used, after RX is started, TX
tasklet still needs to be  scheduled tasklet. This avoids console freezing
when more data is to be transmitted, if the serial communication is not
closed.

Fixes: 69646d7a3689 ("tty/serial: atmel: RS485 HD w/DMA: enable RX after TX is stopped")

Signed-off-by: Razvan Stefanescu <redacted>
---
 drivers/tty/serial/atmel_serial.c | 1 -
 1 file changed, 1 deletion(-)
diff --git a/drivers/tty/serial/atmel_serial.c b/drivers/tty/serial/atmel_serial.c
index 0b4f36905321..8e667967928a 100644
--- a/drivers/tty/serial/atmel_serial.c
+++ b/drivers/tty/serial/atmel_serial.c
@@ -1400,7 +1400,6 @@ atmel_handle_transmit(struct uart_port *port, unsigned int pending)
 
 			atmel_port->hd_start_rx = false;
 			atmel_start_rx(port);
-			return;
 		}
 
 		atmel_tasklet_schedule(atmel_port, &atmel_port->tasklet_tx);
-- 
2.20.1


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