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

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commit d2ace81bf9 upstream.

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: 69646d7a36 ("tty/serial: atmel: RS485 HD w/DMA: enable RX after TX is stopped")
Signed-off-by: Razvan Stefanescu <razvan.stefanescu@microchip.com>
Cc: stable <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20190813074025.16218-1-razvan.stefanescu@microchip.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Razvan Stefanescu
2019-08-13 10:40:25 +03:00
committed by Greg Kroah-Hartman
parent 4632fbfda8
commit 50aa377272
1 changed files with 0 additions and 1 deletions
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drivers/tty/serial/atmel_serial.c
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@@ -1276,7 +1276,6 @@ 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);