linux-kernel - Re: tulip : kernel BUG in tulip_up/tulip

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Date:	Sun, 29 Nov 2009 01:17:10 +0100
From:	Jarek Poplawski <jarkao2@...il.com>
To:	Philippe De Muyter <phdm@...qel.be>
Cc:	grundler@...isc-linux.org, kyle@...artin.ca,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: tulip : kernel BUG in tulip_up/tulip_resume

Philippe De Muyter wrote, On 11/08/2009 11:33 PM:

> Hello,
> 
> I have just installed 2.6.31 (from opensuse 11.2) one a tulip-equipped
> computer and I get the following error message from the kernel :
> 
> [ 2495.526390] ------------[ cut here ]------------
> [ 2495.526390] kernel BUG at /usr/src/packages/BUILD/kernel-default-2.6.31.5/linux-2.6.31/include/linux/netdevice.h:439!
> [ 2495.526390] invalid opcode: 0000 [#1] SMP 
...
> This comes from a BUG_ON in napi_enable in netdevice.h.
> 
> napi_enable itself is called by tulip_up as such :
> 
> #ifdef CONFIG_TULIP_NAPI
> 	napi_enable(&tp->napi);
> #endif
> 
> At first reading, a matching napi_disable is called in tulip_down.
> 
> Does someone know what could be wrong and have a fix or should I look myself ?

Don't know, guess only...

Jarek P.
---

 drivers/net/tulip/tulip_core.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/tulip/tulip_core.c b/drivers/net/tulip/tulip_core.c
index 0df983b..6b1456c 100644
--- a/drivers/net/tulip/tulip_core.c
+++ b/drivers/net/tulip/tulip_core.c
@@ -1787,11 +1787,11 @@ static int tulip_resume(struct pci_dev *pdev)
 		return retval;
 	}
 
-	netif_device_attach(dev);
-
 	if (netif_running(dev))
 		tulip_up(dev);
 
+	netif_device_attach(dev);
+
 	return 0;
 }
 
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