netdev - Re: STMMAC driver: NFS Problem on 2.6.37

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Message-ID: <4D2F4453.4040400@st.com>
Date:	Thu, 13 Jan 2011 19:28:35 +0100
From:	Armando Visconti <armando.visconti@...com>
To:	Chuck Lever <chuck.lever@...cle.com>,
	Deepak SIKRI <deepak.sikri@...com>
Cc:	"Trond.Myklebust@...app.com" <Trond.Myklebust@...app.com>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"linux-nfs@...r.kernel.org" <linux-nfs@...r.kernel.org>,
	Shiraz HASHIM <shiraz.hashim@...com>,
	Viresh KUMAR <viresh.kumar@...com>,
	Giuseppe CAVALLARO <peppe.cavallaro@...com>
Subject: Re: STMMAC driver: NFS Problem on 2.6.37

Chuck Lever wrote:
> On Jan 13, 2011, at 4:09 AM, deepaksi wrote:
>
>   
>> Hi
>>
>> I am facing a problem related to nfs boot, while using the stmmac driver
>> ported on 2.6.37 kernel. When we use a JFFS2 file system and mount the kernel,
>> the network driver works fine.
>>
>> I have been following the mailing list and could find some issues with NFS 
>> on 2.6.37 but I am not too sure whether the kernel crash I am getting is 
>> related to that.
>>
>> The driver worked fine on 2.6.32 kernel, but while booting the 2.6.37
>> kernel I get the following log messages:
>>
>> stmmac: Rx Checksum Offload Engine supported
>>        TX Checksum insertion supported
>> IP-Config: Complete:
>>     device=eth0, addr=192.168.1.10, mask=255.255.255.0, gw=255.255.255.255,
>>     host=192.168.1.10, domain=, nis-domain=(none),
>>     bootserver=192.168.1.1, rootserver=192.168.1.1, rootpath=
>>     
>
> Why is rootpath left undefined?
>   

Yes, Chuck.
Good catch.

Deepak,
Can you possibly verify  your bootargs?

I  see exactly your same problem with kernel 2.6.32 (rc6.3) on my
board, where the bootargs is defined like this:

bootargs=console=ttyAMA0,115200 mem=128M root=/dev/nfs 
ip=192.168.1.10:192.168.1
.1:192.168.1.1:255.255.255.0 nfsroot=192.168.1.1:/home/guest/armv7/target

In fact, rootpath is undefined also in my case...

But if I get the network info from my DHCP server the system is booting 
correctly.
(i.e. console=ttyAMA0,115200 mem=128M root=/dev/nfs ip=dhcp)

So, why do we have rootpath undefined in our bootargs?
I guess we screwed up something someway...

Let's see it tomorrow.

Ciao,
Arm



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