Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=1a2b73302aacddf2543f9d7a25936e4323fa1486
Commit: 1a2b73302aacddf2543f9d7a25936e4323fa1486
Parent: 62be90012c507b2bf1047eb2eaa1e9151f7172fe
Author: Timo Jantunen <[EMAIL PROTECTED]>
AuthorDate: Tue Aug 14 21:56:57 2007 +0300
Committer: Linus Torvalds <[EMAIL PROTECTED]>
CommitDate: Sat Aug 18 09:58:51 2007 -0700
fix random hang in forcedeth driver when using netconsole
If the forcedeth driver receives too much work in an interrupt, it
assumes it has a broken hardware with stuck IRQ. It works around the
problem by disabling interrupts on the nic but makes a printk while
holding device spinlog - which isn't smart thing to do if you have
netconsole on the same nic.
This patch moves the printk's out of the spinlock protected area.
Without this patch the machine hangs hard. With this patch everything
still works even when there is significant increase on CPU usage while
using the nic.
Signed-off-by: Timo Jantunen <[EMAIL PROTECTED]>
Signed-off-by: Linus Torvalds <[EMAIL PROTECTED]>
---
drivers/net/forcedeth.c | 10 +++++-----
1 files changed, 5 insertions(+), 5 deletions(-)
diff --git a/drivers/net/forcedeth.c b/drivers/net/forcedeth.c
index 69f5f36..10f4e3b 100644
--- a/drivers/net/forcedeth.c
+++ b/drivers/net/forcedeth.c
@@ -3068,8 +3068,8 @@ static irqreturn_t nv_nic_irq(int foo, void *data)
np->nic_poll_irq = np->irqmask;
mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
}
- printk(KERN_DEBUG "%s: too many iterations (%d) in
nv_nic_irq.\n", dev->name, i);
spin_unlock(&np->lock);
+ printk(KERN_DEBUG "%s: too many iterations (%d) in
nv_nic_irq.\n", dev->name, i);
break;
}
@@ -3186,8 +3186,8 @@ static irqreturn_t nv_nic_irq_optimized(int foo, void
*data)
np->nic_poll_irq = np->irqmask;
mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
}
- printk(KERN_DEBUG "%s: too many iterations (%d) in
nv_nic_irq.\n", dev->name, i);
spin_unlock(&np->lock);
+ printk(KERN_DEBUG "%s: too many iterations (%d) in
nv_nic_irq.\n", dev->name, i);
break;
}
@@ -3233,8 +3233,8 @@ static irqreturn_t nv_nic_irq_tx(int foo, void *data)
np->nic_poll_irq |= NVREG_IRQ_TX_ALL;
mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
}
- printk(KERN_DEBUG "%s: too many iterations (%d) in
nv_nic_irq_tx.\n", dev->name, i);
spin_unlock_irqrestore(&np->lock, flags);
+ printk(KERN_DEBUG "%s: too many iterations (%d) in
nv_nic_irq_tx.\n", dev->name, i);
break;
}
@@ -3348,8 +3348,8 @@ static irqreturn_t nv_nic_irq_rx(int foo, void *data)
np->nic_poll_irq |= NVREG_IRQ_RX_ALL;
mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
}
- printk(KERN_DEBUG "%s: too many iterations (%d) in
nv_nic_irq_rx.\n", dev->name, i);
spin_unlock_irqrestore(&np->lock, flags);
+ printk(KERN_DEBUG "%s: too many iterations (%d) in
nv_nic_irq_rx.\n", dev->name, i);
break;
}
}
@@ -3421,8 +3421,8 @@ static irqreturn_t nv_nic_irq_other(int foo, void *data)
np->nic_poll_irq |= NVREG_IRQ_OTHER;
mod_timer(&np->nic_poll, jiffies + POLL_WAIT);
}
- printk(KERN_DEBUG "%s: too many iterations (%d) in
nv_nic_irq_other.\n", dev->name, i);
spin_unlock_irqrestore(&np->lock, flags);
+ printk(KERN_DEBUG "%s: too many iterations (%d) in
nv_nic_irq_other.\n", dev->name, i);
break;
}
-
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