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| author | Stephen Hemminger <shemminger@linux-foundation.org> | 2007-02-16 15:37:39 -0800 |
|---|---|---|
| committer | Jeff Garzik <jeff@garzik.org> | 2007-02-20 11:18:13 -0500 |
| commit | 208491d8f92e5aa129acb27e223e75d0173a3edd (patch) | |
| tree | faa36a58a552f2a4c36bdc362701e81d7e7d7261 | |
| parent | 8b5b46718113166b5f6bcdf40e67ea867461e209 (diff) | |
| download | linux-stable-208491d8f92e5aa129acb27e223e75d0173a3edd.tar.gz linux-stable-208491d8f92e5aa129acb27e223e75d0173a3edd.tar.bz2 linux-stable-208491d8f92e5aa129acb27e223e75d0173a3edd.zip | |
skge: race with workq and RTNL
If a workqueue function that needs RTNL is running when skge_down
is called then a deadlock is possible. Fix by only clearing the timer,
and handling the flush_scheduled_work on removal. This work queue is only
ever used for the old fiber based boards.
Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
| -rw-r--r-- | drivers/net/skge.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/drivers/net/skge.c b/drivers/net/skge.c index e482e7fcbb2b..c3d2e0a2c4e6 100644 --- a/drivers/net/skge.c +++ b/drivers/net/skge.c @@ -1419,7 +1419,8 @@ static void xm_link_timer(struct work_struct *work) mutex_unlock(&hw->phy_mutex); nochange: - schedule_delayed_work(&skge->link_thread, LINK_HZ); + if (netif_running(dev)) + schedule_delayed_work(&skge->link_thread, LINK_HZ); } static void genesis_mac_init(struct skge_hw *hw, int port) @@ -2530,7 +2531,7 @@ static int skge_down(struct net_device *dev) netif_stop_queue(dev); if (hw->chip_id == CHIP_ID_GENESIS && hw->phy_type == SK_PHY_XMAC) - cancel_rearming_delayed_work(&skge->link_thread); + cancel_delayed_work(&skge->link_thread); skge_write8(skge->hw, SK_REG(skge->port, LNK_LED_REG), LED_OFF); if (hw->chip_id == CHIP_ID_GENESIS) @@ -3690,6 +3691,8 @@ static void __devexit skge_remove(struct pci_dev *pdev) if (!hw) return; + flush_scheduled_work(); + if ((dev1 = hw->dev[1])) unregister_netdev(dev1); dev0 = hw->dev[0]; @@ -3704,8 +3707,6 @@ static void __devexit skge_remove(struct pci_dev *pdev) skge_write16(hw, B0_LED, LED_STAT_OFF); skge_write8(hw, B0_CTST, CS_RST_SET); - flush_scheduled_work(); - free_irq(pdev->irq, hw); pci_release_regions(pdev); pci_disable_device(pdev); |