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| author | Joerg Ahrens <joerg@hydrops.han.de> | 2006-08-20 21:51:57 +0100 |
|---|---|---|
| committer | Jeff Garzik <jeff@garzik.org> | 2006-08-24 00:38:32 -0400 |
| commit | 9a469abe9c6bab3ce237ee433541931bbd827faf (patch) | |
| tree | b1f3634a602b612fbbf62254f80c7c2c72a4540f | |
| parent | cb958186ed543d1a4f074ceb1c783fe8b0908437 (diff) | |
| download | op-kernel-dev-9a469abe9c6bab3ce237ee433541931bbd827faf.zip op-kernel-dev-9a469abe9c6bab3ce237ee433541931bbd827faf.tar.gz | |
[PATCH] xirc2ps_cs: Cannot reset card in atomic context
I am using a Xircom CEM33 pcmcia NIC which has occasional hardware problems.
If the netdev watchdog detects a transmit timeout, do_reset is called which
msleeps - this is illegal in atomic context.
This patch schedules the timeout handling as a workqueue item.
Signed-off-by: Daniel Drake <dsd@gentoo.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
| -rw-r--r-- | drivers/net/pcmcia/xirc2ps_cs.c | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/drivers/net/pcmcia/xirc2ps_cs.c b/drivers/net/pcmcia/xirc2ps_cs.c index 9bae77c..4122bb4 100644 --- a/drivers/net/pcmcia/xirc2ps_cs.c +++ b/drivers/net/pcmcia/xirc2ps_cs.c @@ -345,6 +345,7 @@ typedef struct local_info_t { void __iomem *dingo_ccr; /* only used for CEM56 cards */ unsigned last_ptr_value; /* last packets transmitted value */ const char *manf_str; + struct work_struct tx_timeout_task; } local_info_t; /**************** @@ -352,6 +353,7 @@ typedef struct local_info_t { */ static int do_start_xmit(struct sk_buff *skb, struct net_device *dev); static void do_tx_timeout(struct net_device *dev); +static void xirc2ps_tx_timeout_task(void *data); static struct net_device_stats *do_get_stats(struct net_device *dev); static void set_addresses(struct net_device *dev); static void set_multicast_list(struct net_device *dev); @@ -589,6 +591,7 @@ xirc2ps_probe(struct pcmcia_device *link) #ifdef HAVE_TX_TIMEOUT dev->tx_timeout = do_tx_timeout; dev->watchdog_timeo = TX_TIMEOUT; + INIT_WORK(&local->tx_timeout_task, xirc2ps_tx_timeout_task, dev); #endif return xirc2ps_config(link); @@ -1341,17 +1344,24 @@ xirc2ps_interrupt(int irq, void *dev_id, struct pt_regs *regs) /*====================================================================*/ static void -do_tx_timeout(struct net_device *dev) +xirc2ps_tx_timeout_task(void *data) { - local_info_t *lp = netdev_priv(dev); - printk(KERN_NOTICE "%s: transmit timed out\n", dev->name); - lp->stats.tx_errors++; + struct net_device *dev = data; /* reset the card */ do_reset(dev,1); dev->trans_start = jiffies; netif_wake_queue(dev); } +static void +do_tx_timeout(struct net_device *dev) +{ + local_info_t *lp = netdev_priv(dev); + lp->stats.tx_errors++; + printk(KERN_NOTICE "%s: transmit timed out\n", dev->name); + schedule_work(&lp->tx_timeout_task); +} + static int do_start_xmit(struct sk_buff *skb, struct net_device *dev) { |
