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authorFrancois Romieu <romieu@fr.zoreil.com>2007-02-15 23:37:50 +0100
committerJeff Garzik <jeff@garzik.org>2007-02-20 11:18:13 -0500
commit22747d6b41f31c71abc2b351bc9f6bfa6bae5d5e (patch)
tree543f2cd2d0d73795368edb945abed28a88d1cf73 /drivers/net
parent83cbb4d2577174e27a91e63a47a2a27c3af50d4e (diff)
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/net')
-rw-r--r--drivers/net/s2io.c21
1 files changed, 18 insertions, 3 deletions
diff --git a/drivers/net/s2io.c b/drivers/net/s2io.c
index e8e0d94e9bd..fd85648d98d 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);