From: Xiao Jiang <jgq516@gmail.com>
To: Ming Lei <tom.leiming@gmail.com>
Cc: steve.glendinning@smsc.com, gregkh@linuxfoundation.org,
netdev@vger.kernel.org, linux-usb@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/1] smsc95xx: add FLAG_POINTTOPOINT flag for driver_info
Date: Thu, 17 May 2012 17:51:04 +0800 [thread overview]
Message-ID: <4FB4CA08.7090600@gmail.com> (raw)
In-Reply-To: <CACVXFVPLf9+8qQKgkikexq3ao=b9fM4jOCasMWVJrbZEVSj_Tg@mail.gmail.com>
Ming Lei wrote:
> On Thu, May 17, 2012 at 10:23 AM, Xiao Jiang <jgq516@gmail.com> wrote:
>
>> Ming Lei wrote:
>>
>>> On Wed, May 16, 2012 at 4:01 PM, <jgq516@gmail.com> wrote:
>>>
>>>
>>>> From: Xiao Jiang <jgq516@gmail.com>
>>>>
>>>> commit c26134 introduced FLAG_POINTTOPOINT flag for USB ethernet devices
>>>> which possibly use "usb%d" names, add this flag to make sure pandaboard
>>>> can mount nfs with smsc95xx NIC.
>>>>
>>>>
>>> Without the flag, I also can mount nfs successfully on my Pandaboard...
>>>
>
> I always mount nfs in console, and not tried to mount nfs as root fs.
>
>
>>>
>> I have pulled latest tree
>> (git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
>> commit 0e93b4b304ae052ba1bc73f6d34a68556fe93429), and enable related options
>> (USB_NET_SMSC95XX,
>> USB_EHCI_HCD and USB_EHCI_HCD_OMAP) with omap2plus_config, However the
>> kernel still can't mount
>> nfs, pls see below infos.
>>
>> [ 3.114105] smsc95xx v1.0.4
>> [ 4.533752] smsc95xx 1-1.1:1.0: *eth0*: register 'smsc95xx' at
>> usb-ehci-omap.0-1.1, smsc95xx USB 2.0 Ethernet, fe:b9:1b:07:8e:d1
>> [ 108.854217] VFS: Unable to mount root fs via NFS, trying floppy.
>> [ 108.861114] VFS: Cannot open root device "nfs" or unknown-block(2,0):
>> error -6
>> [ 108.868713] Please append a correct "root=" boot option; here are the
>> available partitions:
>> [ 108.877655] b300 7761920 mmcblk0 driver: mmcblk
>> [ 108.883239] b301 40131 mmcblk0p1
>> 00000000-0000-0000-0000-000000000mmcblk0p1
>> [ 108.891662] b302 7719232 mmcblk0p2
>> 00000000-0000-0000-0000-000000000mmcblk0p2
>> [ 108.900146] Kernel panic - not syncing: VFS: Unable to mount root fs on
>> unknown-block(2,0)
>>
>> BTW: I tested it with OMAP4430 ES2.2 pandaboard, the issue can be solved
>> with apply the patch.
>>
>> Is there something which I missed? thanks.
>>
>
> What is your kernel parameter? Maybe you use 'usb%d' in kernel parameter for
> mounting nfs as root fs. If so, could you try 'eth%d' in kernel cmd?
>
> In fact, smsc95xx is a real LAN interface, and 'eth%d' should be prefered name
> as described in changelog of commit
> c261344d3ce3edac781f9d3c7eabe2e96d8e8fe8(usbnet:use eth%d name for
> known ethernet devices)
>
>
Thanks for your notice, I used wrong kernel parameter.
Regards,
Xiao
> Thanks,
>
next prev parent reply other threads:[~2012-05-17 9:00 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-05-16 8:01 [PATCH 1/1] smsc95xx: add FLAG_POINTTOPOINT flag for driver_info jgq516
2012-05-16 8:01 ` jgq516-Re5JQEeQqe8AvxtiuMwx3w
2012-05-16 11:38 ` Ben Hutchings
2012-05-16 11:38 ` Ben Hutchings
2012-05-17 8:40 ` Xiao Jiang
2012-05-17 11:45 ` Ben Hutchings
2012-05-16 11:56 ` Ming Lei
2012-05-17 2:23 ` Xiao Jiang
2012-05-17 8:20 ` Ming Lei
2012-05-17 9:51 ` Xiao Jiang [this message]
2012-05-16 13:10 ` Sergei Shtylyov
2012-05-17 8:06 ` Xiao Jiang
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