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path: root/drivers/net/wireless/b43/main.c
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Diffstat (limited to 'drivers/net/wireless/b43/main.c')
-rw-r--r--drivers/net/wireless/b43/main.c51
1 files changed, 37 insertions, 14 deletions
diff --git a/drivers/net/wireless/b43/main.c b/drivers/net/wireless/b43/main.c
index 8c24cd72aac..8fdba9415c0 100644
--- a/drivers/net/wireless/b43/main.c
+++ b/drivers/net/wireless/b43/main.c
@@ -729,6 +729,7 @@ static void b43_synchronize_irq(struct b43_wldev *dev)
*/
void b43_dummy_transmission(struct b43_wldev *dev)
{
+ struct b43_wl *wl = dev->wl;
struct b43_phy *phy = &dev->phy;
unsigned int i, max_loop;
u16 value;
@@ -755,6 +756,9 @@ void b43_dummy_transmission(struct b43_wldev *dev)
return;
}
+ spin_lock_irq(&wl->irq_lock);
+ write_lock(&wl->tx_lock);
+
for (i = 0; i < 5; i++)
b43_ram_write(dev, i * 4, buffer[i]);
@@ -795,6 +799,9 @@ void b43_dummy_transmission(struct b43_wldev *dev)
}
if (phy->radio_ver == 0x2050 && phy->radio_rev <= 0x5)
b43_radio_write16(dev, 0x0051, 0x0037);
+
+ write_unlock(&wl->tx_lock);
+ spin_unlock_irq(&wl->irq_lock);
}
static void key_write(struct b43_wldev *dev,
@@ -2840,24 +2847,31 @@ static int b43_op_tx(struct ieee80211_hw *hw,
{
struct b43_wl *wl = hw_to_b43_wl(hw);
struct b43_wldev *dev = wl->current_dev;
- int err = -ENODEV;
+ unsigned long flags;
+ int err;
if (unlikely(skb->len < 2 + 2 + 6)) {
/* Too short, this can't be a valid frame. */
- return -EINVAL;
+ dev_kfree_skb_any(skb);
+ return NETDEV_TX_OK;
}
B43_WARN_ON(skb_shinfo(skb)->nr_frags);
-
if (unlikely(!dev))
- goto out;
- if (unlikely(b43_status(dev) < B43_STAT_STARTED))
- goto out;
- /* TX is done without a global lock. */
- if (b43_using_pio_transfers(dev))
- err = b43_pio_tx(dev, skb, ctl);
- else
- err = b43_dma_tx(dev, skb, ctl);
-out:
+ return NETDEV_TX_BUSY;
+
+ /* Transmissions on seperate queues can run concurrently. */
+ read_lock_irqsave(&wl->tx_lock, flags);
+
+ err = -ENODEV;
+ if (likely(b43_status(dev) >= B43_STAT_STARTED)) {
+ if (b43_using_pio_transfers(dev))
+ err = b43_pio_tx(dev, skb, ctl);
+ else
+ err = b43_dma_tx(dev, skb, ctl);
+ }
+
+ read_unlock_irqrestore(&wl->tx_lock, flags);
+
if (unlikely(err))
return NETDEV_TX_BUSY;
return NETDEV_TX_OK;
@@ -3476,7 +3490,9 @@ static void b43_wireless_core_stop(struct b43_wldev *dev)
spin_unlock_irqrestore(&wl->irq_lock, flags);
b43_synchronize_irq(dev);
+ write_lock_irqsave(&wl->tx_lock, flags);
b43_set_status(dev, B43_STAT_INITIALIZED);
+ write_unlock_irqrestore(&wl->tx_lock, flags);
b43_pio_stop(dev);
mutex_unlock(&wl->mutex);
@@ -3485,8 +3501,6 @@ static void b43_wireless_core_stop(struct b43_wldev *dev)
cancel_delayed_work_sync(&dev->periodic_work);
mutex_lock(&wl->mutex);
- ieee80211_stop_queues(wl->hw); //FIXME this could cause a deadlock, as mac80211 seems buggy.
-
b43_mac_suspend(dev);
free_irq(dev->dev->irq, dev);
b43dbg(wl, "Wireless interface stopped\n");
@@ -4326,6 +4340,14 @@ static int b43_wireless_core_attach(struct b43_wldev *dev)
err = -EOPNOTSUPP;
goto err_powerdown;
}
+ if (1 /* disable A-PHY */) {
+ /* FIXME: For now we disable the A-PHY on multi-PHY devices. */
+ if (dev->phy.type != B43_PHYTYPE_N) {
+ have_2ghz_phy = 1;
+ have_5ghz_phy = 0;
+ }
+ }
+
dev->phy.gmode = have_2ghz_phy;
tmp = dev->phy.gmode ? B43_TMSLOW_GMODE : 0;
b43_wireless_core_reset(dev, tmp);
@@ -4490,6 +4512,7 @@ static int b43_wireless_init(struct ssb_device *dev)
memset(wl, 0, sizeof(*wl));
wl->hw = hw;
spin_lock_init(&wl->irq_lock);
+ rwlock_init(&wl->tx_lock);
spin_lock_init(&wl->leds_lock);
spin_lock_init(&wl->shm_lock);
mutex_init(&wl->mutex);