commit f0b94c4bcd6f6975c4f8826aaf015038a5555b83
author Siva Durga Prasad Paladugu <siva.durga.paladugu@xilinx.com> Tue May 30 14:28:40 2017 +0200
committer Joe Hershberger <joe.hershberger@ni.com> Fri Jun 02 14:44:20 2017 -0500
tree fcbf447a873188fdc7dd5cf800b8b338f995dbe6
parent dea004e41a6d1aa8ebf668c450962db45a41b373

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>

drivers/net/zynq_gem.c

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 @@
 		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);