netdev - [PATCH] driver:net:stmmac: Disable DMA store and forward mode if platform data force_sf_dma

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:	Thu, 15 Aug 2013 15:37:36 +0800
From:	Sonic Zhang <sonic.adi@...il.com>
To:	Giuseppe Cavallaro <peppe.cavallaro@...com>
CC:	<netdev@...r.kernel.org>,
	<adi-buildroot-devel@...ts.sourceforge.net>,
	Sonic Zhang <sonic.zhang@...log.com>
Subject: [PATCH] driver:net:stmmac: Disable DMA store and forward mode if platform data force_sf_dma_mode is negative.

From: Sonic Zhang <sonic.zhang@...log.com>

Some synopsys ip implementation doesn't support DMA store and forward mode,
such as BF60x. So, define force_sf_dma_mode negative to use DMA thresholds only.

Signed-off-by: Sonic Zhang <sonic.zhang@...log.com>
---
 drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index f2ccb36..b0e003a 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -1157,7 +1157,9 @@ static void free_dma_desc_resources(struct stmmac_priv *priv)
  */
 static void stmmac_dma_operation_mode(struct stmmac_priv *priv)
 {
-	if (likely(priv->plat->force_sf_dma_mode ||
+	if (priv->plat->force_sf_dma_mode < 0)
+		priv->hw->dma->dma_mode(priv->ioaddr, tc, tc);
+	else if (likely(priv->plat->force_sf_dma_mode > 0 ||
 		   ((priv->plat->tx_coe) && (!priv->no_csum_insertion)))) {
 		/*
 		 * In case of GMAC, SF mode can be enabled
-- 
1.8.2.3


--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html