From f88203a229cca0b3634738b7dae47419d1da6dc8 Mon Sep 17 00:00:00 2001
From: Vince Bridgers <vbridger@opensource.altera.com>
Date: Wed, 15 Apr 2015 11:17:42 -0500
Subject: [PATCH] stmmac: Configure Flow Control to work correctly based on
 rxfifo size

Configure flow control correctly, and based on the receive fifo size read
as a property from the devicetree since the Synopsys stmmac fifo sizes are
configurable based on a particular chip's implementation. This patch maintains
the previous incorrect behavior unless the receive fifo size is found in the
devicetree.

Signed-off-by: Vince Bridgers <vbridger@opensource.altera.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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