diff options
| -rw-r--r-- | drivers/net/8139too.c | 86 |
1 files changed, 32 insertions, 54 deletions
diff --git a/drivers/net/8139too.c b/drivers/net/8139too.c index 30bee11c48bd..d2102a27d307 100644 --- a/drivers/net/8139too.c +++ b/drivers/net/8139too.c @@ -586,16 +586,16 @@ struct rtl8139_private { dma_addr_t tx_bufs_dma; signed char phys[4]; /* MII device addresses. */ char twistie, twist_row, twist_col; /* Twister tune state. */ - unsigned int default_port:4; /* Last dev->if_port value. */ + unsigned int default_port : 4; /* Last dev->if_port value. */ + unsigned int have_thread : 1; spinlock_t lock; spinlock_t rx_lock; chip_t chipset; - pid_t thr_pid; - wait_queue_head_t thr_wait; - struct completion thr_exited; u32 rx_config; struct rtl_extra_stats xstats; - int time_to_die; + + struct work_struct thread; + struct mii_if_info mii; unsigned int regs_len; unsigned long fifo_copy_timeout; @@ -620,7 +620,7 @@ static int rtl8139_open (struct net_device *dev); static int mdio_read (struct net_device *dev, int phy_id, int location); static void mdio_write (struct net_device *dev, int phy_id, int location, int val); -static void rtl8139_start_thread(struct net_device *dev); +static void rtl8139_start_thread(struct rtl8139_private *tp); static void rtl8139_tx_timeout (struct net_device *dev); static void rtl8139_init_ring (struct net_device *dev); static int rtl8139_start_xmit (struct sk_buff *skb, @@ -637,6 +637,7 @@ static struct net_device_stats *rtl8139_get_stats (struct net_device *dev); static void rtl8139_set_rx_mode (struct net_device *dev); static void __set_rx_mode (struct net_device *dev); static void rtl8139_hw_start (struct net_device *dev); +static void rtl8139_thread (void *_data); static struct ethtool_ops rtl8139_ethtool_ops; /* write MMIO register, with flush */ @@ -1007,8 +1008,7 @@ static int __devinit rtl8139_init_one (struct pci_dev *pdev, (debug < 0 ? RTL8139_DEF_MSG_ENABLE : ((1 << debug) - 1)); spin_lock_init (&tp->lock); spin_lock_init (&tp->rx_lock); - init_waitqueue_head (&tp->thr_wait); - init_completion (&tp->thr_exited); + INIT_WORK(&tp->thread, rtl8139_thread, dev); tp->mii.dev = dev; tp->mii.mdio_read = mdio_read; tp->mii.mdio_write = mdio_write; @@ -1345,7 +1345,7 @@ static int rtl8139_open (struct net_device *dev) dev->irq, RTL_R8 (MediaStatus), tp->mii.full_duplex ? "full" : "half"); - rtl8139_start_thread(dev); + rtl8139_start_thread(tp); return 0; } @@ -1594,55 +1594,43 @@ static inline void rtl8139_thread_iter (struct net_device *dev, RTL_R8 (Config1)); } -static int rtl8139_thread (void *data) +static void rtl8139_thread (void *_data) { - struct net_device *dev = data; + struct net_device *dev = _data; struct rtl8139_private *tp = netdev_priv(dev); - unsigned long timeout; - - daemonize("%s", dev->name); - allow_signal(SIGTERM); - - while (1) { - timeout = next_tick; - do { - timeout = interruptible_sleep_on_timeout (&tp->thr_wait, timeout); - /* make swsusp happy with our thread */ - try_to_freeze(); - } while (!signal_pending (current) && (timeout > 0)); - - if (signal_pending (current)) { - flush_signals(current); - } + unsigned long thr_delay; - if (tp->time_to_die) - break; - - if (rtnl_lock_interruptible ()) - break; + if (rtnl_shlock_nowait() == 0) { rtl8139_thread_iter (dev, tp, tp->mmio_addr); rtnl_unlock (); + + thr_delay = next_tick; + } else { + /* unlikely race. mitigate with fast poll. */ + thr_delay = HZ / 2; } - complete_and_exit (&tp->thr_exited, 0); + schedule_delayed_work(&tp->thread, thr_delay); } -static void rtl8139_start_thread(struct net_device *dev) +static void rtl8139_start_thread(struct rtl8139_private *tp) { - struct rtl8139_private *tp = netdev_priv(dev); - - tp->thr_pid = -1; tp->twistie = 0; - tp->time_to_die = 0; if (tp->chipset == CH_8139_K) tp->twistie = 1; else if (tp->drv_flags & HAS_LNK_CHNG) return; - tp->thr_pid = kernel_thread(rtl8139_thread, dev, CLONE_FS|CLONE_FILES); - if (tp->thr_pid < 0) { - printk (KERN_WARNING "%s: unable to start kernel thread\n", - dev->name); + tp->have_thread = 1; + + schedule_delayed_work(&tp->thread, next_tick); +} + +static void rtl8139_stop_thread(struct rtl8139_private *tp) +{ + if (tp->have_thread) { + cancel_rearming_delayed_work(&tp->thread); + tp->have_thread = 0; } } @@ -2224,22 +2212,12 @@ static int rtl8139_close (struct net_device *dev) { struct rtl8139_private *tp = netdev_priv(dev); void __iomem *ioaddr = tp->mmio_addr; - int ret = 0; unsigned long flags; netif_stop_queue (dev); - if (tp->thr_pid >= 0) { - tp->time_to_die = 1; - wmb(); - ret = kill_proc (tp->thr_pid, SIGTERM, 1); - if (ret) { - printk (KERN_ERR "%s: unable to signal thread\n", dev->name); - return ret; - } - wait_for_completion (&tp->thr_exited); - } - + rtl8139_stop_thread(tp); + if (netif_msg_ifdown(tp)) printk(KERN_DEBUG "%s: Shutting down ethercard, status was 0x%4.4x.\n", dev->name, RTL_R16 (IntrStatus)); |