From: Prabhakar Kushwaha <prabhakar@freescale.com>
Date: Thu, 2 Jul 2015 05:58:57 +0000 (+0530)
Subject: driver/ldpaa_eth:Flush buffer before seeding BMAN after TX_conf
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=e247db4fadc4e00b6f61f28f4df012bcb3b083c1;p=project%2Fbcm63xx%2Fu-boot.git

driver/ldpaa_eth:Flush buffer before seeding BMAN after TX_conf

Flush buffer before releasing to BMan after TX_conf to ensure, the core does
not have any cachelines that the WRIOP will DMA to.

Signed-off-by: Prabhakar Kushwaha <prabhakar@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
---

diff --git a/drivers/net/ldpaa_eth/ldpaa_eth.c b/drivers/net/ldpaa_eth/ldpaa_eth.c
index d4be1bada9..5636511a4f 100644
--- a/drivers/net/ldpaa_eth/ldpaa_eth.c
+++ b/drivers/net/ldpaa_eth/ldpaa_eth.c
@@ -153,6 +153,7 @@ static void ldpaa_eth_tx_conf(struct ldpaa_eth_priv *priv,
 		}
 	}
 
+	flush_dcache_range(fd_addr, fd_addr + LDPAA_ETH_RX_BUFFER_SIZE);
 	qbman_release_desc_clear(&releasedesc);
 	qbman_release_desc_set_bpid(&releasedesc, dflt_dpbp->dpbp_attr.bpid);
 	do {