diff options
Diffstat (limited to 'target/linux/mediatek/patches-4.4/0077-net-mediatek-do-not-set-the-QID-field-in-the-TX-DMA-.patch')
| -rw-r--r-- | target/linux/mediatek/patches-4.4/0077-net-mediatek-do-not-set-the-QID-field-in-the-TX-DMA-.patch | 37 |
1 files changed, 37 insertions, 0 deletions
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 index 0000000000..2270051a0b --- /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 + |