From 74dd40bca95f9968e368751ea81f3b98471109ce Mon Sep 17 00:00:00 2001
From: Beniamino Galvani <b.galvani@gmail.com>
Date: Wed, 10 Sep 2014 22:50:03 +0200
Subject: [PATCH] net: arc_emac: prevent reuse of unreclaimed tx descriptors

This patch changes the logic in tx path to ensure that tx descriptors
are reused for transmission only after they have been reclaimed by
arc_emac_tx_clean().

Signed-off-by: Beniamino Galvani <b.galvani@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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