redonkable/alistair23-linux
redonkable/alistair23-linux
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[PATCH] sky2: no irq disable needed during tx

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Don't need to disable interrupts during the transmit routine.

Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
This commit is contained in:
Stephen Hemminger 2005-12-09 11:34:58 -08:00 committed by Jeff Garzik
parent 91c86df5a8
commit f2e46561cc
1 changed files with 9 additions and 13 deletions
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22
drivers/net/sky2.c
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@ -868,15 +868,14 @@ static void sky2_vlan_rx_register(struct net_device *dev, struct vlan_group *grp
struct sky2_port *sky2 = netdev_priv(dev);
struct sky2_hw *hw = sky2->hw;
u16 port = sky2->port;
unsigned long flags;
spin_lock_irqsave(&sky2->tx_lock, flags);
spin_lock(&sky2->tx_lock);
sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T), RX_VLAN_STRIP_ON);
sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T), TX_VLAN_TAG_ON);
sky2->vlgrp = grp;
spin_unlock_irqrestore(&sky2->tx_lock, flags);
spin_unlock(&sky2->tx_lock);
}
static void sky2_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
@ -884,16 +883,15 @@ static void sky2_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
struct sky2_port *sky2 = netdev_priv(dev);
struct sky2_hw *hw = sky2->hw;
u16 port = sky2->port;
unsigned long flags;
spin_lock_irqsave(&sky2->tx_lock, flags);
spin_lock(&sky2->tx_lock);
sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T), RX_VLAN_STRIP_OFF);
sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T), TX_VLAN_TAG_OFF);
if (sky2->vlgrp)
sky2->vlgrp->vlan_devices[vid] = NULL;
spin_unlock_irqrestore(&sky2->tx_lock, flags);
spin_unlock(&sky2->tx_lock);
}
#endif
@ -1072,6 +1070,8 @@ static inline unsigned tx_le_req(const struct sk_buff *skb)
* A single packet can generate multiple list elements, and
* the number of ring elements will probably be less than the number
* of list elements used.
*
* No BH disabling for tx_lock here (like tg3)
*/
static int sky2_xmit_frame(struct sk_buff *skb, struct net_device *dev)
{
@ -1079,22 +1079,18 @@ static int sky2_xmit_frame(struct sk_buff *skb, struct net_device *dev)
struct sky2_hw *hw = sky2->hw;
struct sky2_tx_le *le = NULL;
struct ring_info *re;
unsigned long flags;
unsigned i, len;
dma_addr_t mapping;
u32 addr64;
u16 mss;
u8 ctrl;
local_irq_save(flags);
if (!spin_trylock(&sky2->tx_lock)) {
local_irq_restore(flags);
if (!spin_trylock(&sky2->tx_lock))
return NETDEV_TX_LOCKED;
}
if (unlikely(tx_avail(sky2) < tx_le_req(skb))) {
netif_stop_queue(dev);
spin_unlock_irqrestore(&sky2->tx_lock, flags);
spin_unlock(&sky2->tx_lock);
printk(KERN_WARNING PFX "%s: ring full when queue awake!\n",
dev->name);
@ -1226,7 +1222,7 @@ static int sky2_xmit_frame(struct sk_buff *skb, struct net_device *dev)
out_unlock:
mmiowb();
spin_unlock_irqrestore(&sky2->tx_lock, flags);
spin_unlock(&sky2->tx_lock);
dev->trans_start = jiffies;
return NETDEV_TX_OK;