From f0b94c4bcd6f6975c4f8826aaf015038a5555b83 Mon Sep 17 00:00:00 2001
From: Siva Durga Prasad Paladugu <siva.durga.paladugu@xilinx.com>
Date: Tue, 30 May 2017 14:28:40 +0200
Subject: net: zynq_gem: Dont flush dummy descriptors

Dont flush dummy descriptors as they are already
allocated from a region with dcache off. Tested
this on Zynq(zc702) and ZynqMP(zcu102) boards.

Signed-off-by: Siva Durga Prasad Paladugu <sivadur@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>

diff --git a/drivers/net/zynq_gem.c b/drivers/net/zynq_gem.c
index d3919be..f6bbcdc 100644
--- a/drivers/net/zynq_gem.c
+++ b/drivers/net/zynq_gem.c
@@ -407,10 +407,6 @@ static int zynq_gem_init(struct udevice *dev)
 		dummy_rx_bd->addr = ZYNQ_GEM_RXBUF_WRAP_MASK |
 				ZYNQ_GEM_RXBUF_NEW_MASK;
 		dummy_rx_bd->status = 0;
-		flush_dcache_range((ulong)&dummy_tx_bd, (ulong)&dummy_tx_bd +
-				   sizeof(dummy_tx_bd));
-		flush_dcache_range((ulong)&dummy_rx_bd, (ulong)&dummy_rx_bd +
-				   sizeof(dummy_rx_bd));
 
 		writel((ulong)dummy_tx_bd, &regs->transmit_q1_ptr);
 		writel((ulong)dummy_rx_bd, &regs->receive_q1_ptr);
-- 
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