Commit a6086a89 authored by Florian Westphal's avatar Florian Westphal Committed by David S. Miller
Browse files

drivers: net: remove NETDEV_TX_LOCKED



replace the trylock by a full spin_lock and remove TX_LOCKED return value.
Followup patch will remove TX_LOCKED from the kernel.

Cc: Jon Mason <jdmason@kudzu.us>
Cc: Andy Gospodarek <andy@greyhouse.net>
Signed-off-by: default avatarFlorian Westphal <fw@strlen.de>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 926f2730
......@@ -1664,8 +1664,7 @@ static int t1_sge_tx(struct sk_buff *skb, struct adapter *adapter,
struct cmdQ *q = &sge->cmdQ[qid];
unsigned int credits, pidx, genbit, count, use_sched_skb = 0;
if (!spin_trylock(&q->lock))
return NETDEV_TX_LOCKED;
spin_lock(&q->lock);
reclaim_completed_tx(sge, q);
......
......@@ -4021,7 +4021,6 @@ static netdev_tx_t s2io_xmit(struct sk_buff *skb, struct net_device *dev)
unsigned long flags = 0;
u16 vlan_tag = 0;
struct fifo_info *fifo = NULL;
int do_spin_lock = 1;
int offload_type;
int enable_per_list_interrupt = 0;
struct config_param *config = &sp->config;
......@@ -4074,7 +4073,6 @@ static netdev_tx_t s2io_xmit(struct sk_buff *skb, struct net_device *dev)
queue += sp->udp_fifo_idx;
if (skb->len > 1024)
enable_per_list_interrupt = 1;
do_spin_lock = 0;
}
}
}
......@@ -4084,12 +4082,7 @@ static netdev_tx_t s2io_xmit(struct sk_buff *skb, struct net_device *dev)
[skb->priority & (MAX_TX_FIFOS - 1)];
fifo = &mac_control->fifos[queue];
if (do_spin_lock)
spin_lock_irqsave(&fifo->tx_lock, flags);
else {
if (unlikely(!spin_trylock_irqsave(&fifo->tx_lock, flags)))
return NETDEV_TX_LOCKED;
}
spin_lock_irqsave(&fifo->tx_lock, flags);
if (sp->config.multiq) {
if (__netif_subqueue_stopped(dev, fifo->fifo_no)) {
......
......@@ -2137,10 +2137,8 @@ static int pch_gbe_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
struct pch_gbe_tx_ring *tx_ring = adapter->tx_ring;
unsigned long flags;
if (!spin_trylock_irqsave(&tx_ring->tx_lock, flags)) {
/* Collision - tell upper layer to requeue */
return NETDEV_TX_LOCKED;
}
spin_trylock_irqsave(&tx_ring->tx_lock, flags);
if (unlikely(!PCH_GBE_DESC_UNUSED(tx_ring))) {
netif_stop_queue(netdev);
spin_unlock_irqrestore(&tx_ring->tx_lock, flags);
......
......@@ -1610,7 +1610,6 @@ static inline int bdx_tx_space(struct bdx_priv *priv)
* o NETDEV_TX_BUSY Cannot transmit packet, try later
* Usually a bug, means queue start/stop flow control is broken in
* the driver. Note: the driver must NOT put the skb in its DMA ring.
* o NETDEV_TX_LOCKED Locking failed, please retry quickly.
*/
static netdev_tx_t bdx_tx_transmit(struct sk_buff *skb,
struct net_device *ndev)
......@@ -1630,12 +1629,7 @@ static netdev_tx_t bdx_tx_transmit(struct sk_buff *skb,
ENTER;
local_irq_save(flags);
if (!spin_trylock(&priv->tx_lock)) {
local_irq_restore(flags);
DBG("%s[%s]: TX locked, returning NETDEV_TX_LOCKED\n",
BDX_DRV_NAME, ndev->name);
return NETDEV_TX_LOCKED;
}
spin_lock(&priv->tx_lock);
/* build tx descriptor */
BDX_ASSERT(f->m.wptr >= f->m.memsz); /* started with valid wptr */
......
......@@ -179,11 +179,7 @@ static int rionet_start_xmit(struct sk_buff *skb, struct net_device *ndev)
unsigned long flags;
int add_num = 1;
local_irq_save(flags);
if (!spin_trylock(&rnet->tx_lock)) {
local_irq_restore(flags);
return NETDEV_TX_LOCKED;
}
spin_lock_irqsave(&rnet->tx_lock, flags);
if (is_multicast_ether_addr(eth->h_dest))
add_num = nets[rnet->mport->id].nact;
......
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