From 5412dd333f4fcb620f0843b174c9ae32459c77c7 Mon Sep 17 00:00:00 2001
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Fri, 26 Sep 2014 15:23:12 +0200
Subject: [PATCH] tty: serial: 8250_omap: add custom DMA-RX callback

The omap needs a DMA request pending right away. If it is
enqueued once the bytes are in the FIFO then nothing will happen
and the FIFO will be later purged via RX-timeout interrupt.
This patch enqueues RX-DMA request on completion but not if it
was aborted on error. The first enqueue will happen in the driver
in startup.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
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