diff options
| author | Jiangfeng Xiao <xiaojiangfeng@huawei.com> | 2019-08-03 20:31:40 +0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2019-08-06 14:14:01 -0700 |
| commit | f2243b82785942be519016067ee6c55a063bbfe2 (patch) | |
| tree | 46c815f3b8cea0148dfd1caab9a6a47550c38d87 | |
| parent | 1a2c070ae805910a853b4a14818481ed2e17c727 (diff) | |
net: hisilicon: fix hip04-xmit never return TX_BUSY
TX_DESC_NUM is 256, in tx_count, the maximum value of
mod(TX_DESC_NUM - 1) is 254, the variable "count" in
the hip04_mac_start_xmit function is never equal to
(TX_DESC_NUM - 1), so hip04_mac_start_xmit never
return NETDEV_TX_BUSY.
tx_count is modified to mod(TX_DESC_NUM) so that
the maximum value of tx_count can reach
(TX_DESC_NUM - 1), then hip04_mac_start_xmit can reurn
NETDEV_TX_BUSY.
Signed-off-by: Jiangfeng Xiao <xiaojiangfeng@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/net/ethernet/hisilicon/hip04_eth.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/ethernet/hisilicon/hip04_eth.c b/drivers/net/ethernet/hisilicon/hip04_eth.c index 1e1b154ed2ec..d775b980f1bb 100644 --- a/drivers/net/ethernet/hisilicon/hip04_eth.c +++ b/drivers/net/ethernet/hisilicon/hip04_eth.c @@ -248,7 +248,7 @@ struct hip04_priv { static inline unsigned int tx_count(unsigned int head, unsigned int tail) { - return (head - tail) % (TX_DESC_NUM - 1); + return (head - tail) % TX_DESC_NUM; } static void hip04_config_port(struct net_device *ndev, u32 speed, u32 duplex) |