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| author | Francois Romieu <romieu@fr.zoreil.com> | 2007-02-15 23:37:50 +0100 |
|---|---|---|
| committer | Jeff Garzik <jeff@garzik.org> | 2007-02-20 17:18:13 +0100 |
| commit | 22747d6b41f31c71abc2b351bc9f6bfa6bae5d5e (patch) | |
| tree | 543f2cd2d0d73795368edb945abed28a88d1cf73 /drivers | |
| parent | 8139too: RTNL and flush_scheduled_work deadlock (diff) | |
| download | linux-22747d6b41f31c71abc2b351bc9f6bfa6bae5d5e.tar.xz linux-22747d6b41f31c71abc2b351bc9f6bfa6bae5d5e.zip | |
s2io: RTNL and flush_scheduled_work deadlock
Mantra: don't use flush_scheduled_work with RTNL held.
Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/s2io.c | 21 |
1 files changed, 18 insertions, 3 deletions
diff --git a/drivers/net/s2io.c b/drivers/net/s2io.c index e8e0d94e9bdd..fd85648d98d1 100644 --- a/drivers/net/s2io.c +++ b/drivers/net/s2io.c @@ -3758,7 +3758,6 @@ static int s2io_close(struct net_device *dev) { struct s2io_nic *sp = dev->priv; - flush_scheduled_work(); netif_stop_queue(dev); /* Reset card, kill tasklet and free Tx and Rx buffers. */ s2io_card_down(sp); @@ -5847,9 +5846,14 @@ static void s2io_set_link(struct work_struct *work) register u64 val64; u16 subid; + rtnl_lock(); + + if (!netif_running(dev)) + goto out_unlock; + if (test_and_set_bit(0, &(nic->link_state))) { /* The card is being reset, no point doing anything */ - return; + goto out_unlock; } subid = nic->pdev->subsystem_device; @@ -5903,6 +5907,9 @@ static void s2io_set_link(struct work_struct *work) s2io_link(nic, LINK_DOWN); } clear_bit(0, &(nic->link_state)); + +out_unlock: + rtnl_lock(); } static int set_rxd_buffer_pointer(struct s2io_nic *sp, struct RxD_t *rxdp, @@ -6356,6 +6363,11 @@ static void s2io_restart_nic(struct work_struct *work) struct s2io_nic *sp = container_of(work, struct s2io_nic, rst_timer_task); struct net_device *dev = sp->dev; + rtnl_lock(); + + if (!netif_running(dev)) + goto out_unlock; + s2io_card_down(sp); if (s2io_card_up(sp)) { DBG_PRINT(ERR_DBG, "%s: Device bring up failed\n", @@ -6364,7 +6376,8 @@ static void s2io_restart_nic(struct work_struct *work) netif_wake_queue(dev); DBG_PRINT(ERR_DBG, "%s: was reset by Tx watchdog timer\n", dev->name); - +out_unlock: + rtnl_unlock(); } /** @@ -7173,6 +7186,8 @@ static void __devexit s2io_rem_nic(struct pci_dev *pdev) return; } + flush_scheduled_work(); + sp = dev->priv; unregister_netdev(dev); |