tty/serial: atmel: fix RS485 half duplex with DMA

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commit 0058f0871e upstream.

When using DMA, half duplex doesn't work properly because rx is not stopped
before starting tx. Ensure we call atmel_stop_rx() in the DMA case.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Alexandre Belloni 2016-05-28 00:54:08 +02:00 • committed by Greg Kroah-Hartman

parent 8af97d26ce

commit 580b1bbcc9

1 changed files with 8 additions and 6 deletions

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drivers/tty/serial/atmel_serial.c

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