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Subject: RE: question about driver built-in kernel
Date: Mon, 21 Nov 2005 12:06:52 -0700
Message-ID: <08A354A3A9CCA24F9EE9BE13600CFBC501A31918@wcosmb07.cos.agilent.com>
Thread-Topic: question about driver built-in kernel
Thread-Index: AcXszW008lTovCOIQ2SlMybyLXrT/ACAOfdg
From: <yiding_wang@agilent.com>
To: <greg@kroah.com>, <yiding_wang@agilent.com>
Cc: <linux-kernel@vger.kernel.org>
Sender: linux-kernel-owner@vger.kernel.org
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Hello Greg,

Thanks for the support and prompt response. I figure it out the problem is endianess. I worked everything on x86 based system and copied files to PPC system. Somehow I forgot to change the endianess define in my makefile. Now everything works fine!

Again, relay appreciate your help!

Eddie

-----Original Message-----
From: Greg KH [mailto:greg@kroah.com] 
Sent: Friday, November 18, 2005 9:37 PM
To: yiding_wang@agilent.com
Cc: linux-kernel@vger.kernel.org
Subject: Re: question about driver built-in kernel

On Fri, Nov 18, 2005 at 06:57:38PM -0700, yiding_wang@agilent.com wrote:
> Thanks Greg! 
> 
> Got everything straighten up.
>  
> 1, replaced init_module() by __init init_module to avoid kernel build conflict.
> 2, arranged correct sequence in Makefile to load two drivers in proper order.
> 
> Now it looks the pci bus register accessing has problem. If loaded as
> module, everything works fine. If build in kernel, it always failed at
> the spot driver resetting the chip through register during the kernel
> loading. It seems the pci base address mapping or something related
> has problem. Is there any difference for ioremap call between the
> kernel loading and after system is up? Is anything special on pci
> device register accessing during the kernel booting, compare with
> after system boot up?

Do you have a pointer to your source code, so we can look at it to see
what is wrong?

thanks,

greg k-h
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