tty/serial: atmel: fix hardware handshake selection

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commit 5be605ac9a upstream.

Commit 1cf6e8fc83 ("tty/serial: at91: fix RTS line management when
hardware handshake is enabled") actually allowed to enable hardware
handshaking.
Before, the CRTSCTS flags was silently ignored.

As the DMA controller can't drive RTS (as explain in the commit message).
Ensure that hardware flow control stays disabled when DMA is used and FIFOs
are not available.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Fixes: 1cf6e8fc83 ("tty/serial: at91: fix RTS line management when hardware handshake is enabled")
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

This commit is contained in:

Alexandre Belloni 2016-04-12 14:51:40 +02:00 • committed by Greg Kroah-Hartman

parent c9715888bf

commit eb57884803

1 changed files with 13 additions and 1 deletions

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drivers/tty/serial/atmel_serial.c

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