mediatek: update patches

[openwrt.git] / target / linux / mediatek / patches-4.4 / 0077-net-mediatek-do-not-set-the-QID-field-in-the-TX-DMA-.patch

diff --git a/target/linux/mediatek/patches-4.4/0077-net-mediatek-do-not-set-the-QID-field-in-the-TX-DMA-.patch b/target/linux/mediatek/patches-4.4/0077-net-mediatek-do-not-set-the-QID-field-in-the-TX-DMA-.patch
new file mode 100644 (file)
index 0000000..2270051
--- /dev/null
+++ b/target/linux/mediatek/patches-4.4/0077-net-mediatek-do-not-set-the-QID-field-in-the-TX-DMA-.patch
@@ -0,0 +1,37 @@
+From 6a6f264e82649f8d9933271f2e9b08af94daad50 Mon Sep 17 00:00:00 2001
+From: John Crispin <blogic@openwrt.org>
+Date: Thu, 7 Apr 2016 17:36:23 +0200
+Subject: [PATCH 77/91] net: mediatek: do not set the QID field in the TX DMA
+ descriptors
+
+The QID field gets set to the mac id. This made the DMA linked list queue
+the traffic of each MAC on a different internal queue. However during long
+term testing we found that this will cause traffic stalls as the multi
+queue setup requires a more complete initialisation which is not part of
+the upstream driver yet.
+
+This patch removes the code setting the QID field, resulting in all
+traffic ending up in queue 0 which works without any special setup.
+
+Signed-off-by: John Crispin <blogic@openwrt.org>
+---
+ drivers/net/ethernet/mediatek/mtk_eth_soc.c |    3 +--
+ 1 file changed, 1 insertion(+), 2 deletions(-)
+
+diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+index bbcd607..bab5d45 100644
+--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
++++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+@@ -603,8 +603,7 @@ static int mtk_tx_map(struct sk_buff *skb, struct net_device *dev,
+                       WRITE_ONCE(txd->txd1, mapped_addr);
+                       WRITE_ONCE(txd->txd3, (TX_DMA_SWC |
+                                              TX_DMA_PLEN0(frag_map_size) |
+-                                             last_frag * TX_DMA_LS0) |
+-                                             mac->id);
++                                             last_frag * TX_DMA_LS0));
+                       WRITE_ONCE(txd->txd4, 0);
+ 
+                       tx_buf->skb = (struct sk_buff *)MTK_DMA_DUMMY_DESC;
+-- 
+1.7.10.4
+