From mboxrd@z Thu Jan  1 00:00:00 1970
From: Greg KH <greg@kroah.com>
Date: Tue, 03 Jun 2014 03:55:28 +0000
Subject: Re: Cross building udev cannot creat device node
Message-Id: <20140603035528.GA13130@kroah.com>
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To: linux-hotplug@vger.kernel.org

On Tue, Jun 03, 2014 at 11:05:08AM +0800, 李建文 wrote:
> I cross build Udev and run on arm and found cannot creat device node.
> 
> Linux version 3.0.35  (gcc version 4.6.2 20110630 (prerelease)
> (Freescale MAD -- Linaro 2011.07 -- Built at 2011/08/10 09:20) ) #161
> SMP PREEMPT Fri May 30 18:21:18 CST 2014
> 
> udev 182

Are you using DEVTMPFS in your kernel?  udev no longer creates the
device nodes, the kernel does.

thanks,

greg k-h