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patch "tty/serial: atmel: reschedule TX after RX was started" added to tty-testing

PATCH [email protected] 1 participant 1 message Aug 15, 2019

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This is a note to let you know that I've just added the patch titled

tty/serial: atmel: reschedule TX after RX was started

to my tty git tree which can be found at
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty.git
in the tty-testing branch.

The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.)

The patch will be merged to the tty-next branch sometime soon, after it passes testing, and the merge window is open.

If you have any questions about this process, please let me know.

From a8441389f0daef2d74ecd79ab27067953f0b2483 Mon Sep 17 00:00:00 2001
From: Razvan Stefanescu <[email protected]>
Date: Tue, 13 Aug 2019 10:40:25 +0300
Subject: tty/serial: atmel: reschedule TX after RX was started

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")
Cc stable <[email protected]>
---
 drivers/tty/serial/atmel_serial.c | 1 -
 1 file changed, 1 deletion(-)
drivers/tty/serial/atmel_serial.c +0 -1
index 19a85d6fe3d2..9a54c9e6d36e 100644
@@ -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);
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