diff options
Diffstat (limited to 'target/linux/mediatek/patches-4.4/0088-net-next-mediatek-fix-threshold-value.patch')
| -rw-r--r-- | target/linux/mediatek/patches-4.4/0088-net-next-mediatek-fix-threshold-value.patch | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/target/linux/mediatek/patches-4.4/0088-net-next-mediatek-fix-threshold-value.patch b/target/linux/mediatek/patches-4.4/0088-net-next-mediatek-fix-threshold-value.patch new file mode 100644 index 0000000000..2a8fc33fa2 --- /dev/null +++ b/target/linux/mediatek/patches-4.4/0088-net-next-mediatek-fix-threshold-value.patch @@ -0,0 +1,35 @@ +From 34ea0f209e0759158e363039852a04b1facc3acd Mon Sep 17 00:00:00 2001 +From: John Crispin <john@phrozen.org> +Date: Tue, 3 May 2016 02:55:27 +0200 +Subject: [PATCH 088/102] net-next: mediatek: fix threshold value +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +The logic to calculate the threshold value for stopping the TX queue is +bad. Currently it will always use 1/2 of the rings size, which is way too +much. Set the threshold to MAX_SKB_FRAGS. This makes sure that the queue +is stopped when there is not enough room to accept an additional segment. + +Signed-off-by: John Crispin <john@phrozen.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 ec6140f..d03f339 100644 +--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c ++++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c +@@ -1043,8 +1043,7 @@ static int mtk_tx_alloc(struct mtk_eth *eth) + atomic_set(&ring->free_count, MTK_DMA_SIZE - 2); + ring->next_free = &ring->dma[0]; + ring->last_free = &ring->dma[MTK_DMA_SIZE - 2]; +- ring->thresh = max((unsigned long)MTK_DMA_SIZE >> 2, +- MAX_SKB_FRAGS); ++ ring->thresh = MAX_SKB_FRAGS; + + /* make sure that all changes to the dma ring are flushed before we + * continue +-- +1.7.10.4 + |