linux-kernel - Re: [linux-usb-devel] 2.6.19-rc5: modular USB rebuilds vmlinux?

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Message-ID: <4564A153.7060804@oracle.com>
Date:	Wed, 22 Nov 2006 11:13:23 -0800
From:	Randy Dunlap <randy.dunlap@...cle.com>
To:	Alan Stern <stern@...land.harvard.edu>
CC:	Andrey Borzenkov <arvidjaar@...l.ru>,
	linux-usb-devel@...ts.sourceforge.net, linux-kernel@...r.kernel.org
Subject: Re: [linux-usb-devel] 2.6.19-rc5: modular USB rebuilds vmlinux?

Alan Stern wrote:
> On Wed, 22 Nov 2006, Randy Dunlap wrote:
> 
>> On Wed, 22 Nov 2006 21:45:55 +0300 Andrey Borzenkov wrote:
>>
>>> -----BEGIN PGP SIGNED MESSAGE-----
>>> Hash: SHA1
>>>
>>> I was under impression that I have fully modular USB. Still:
>>>
>>> {pts/1}% make -C ~/src/linux-git O=$HOME/build/linux-2.6.19
>>> make: Entering directory `/home/bor/src/linux-git'
>>>   GEN     /home/bor/build/linux-2.6.19/Makefile
>>> scripts/kconfig/conf -s arch/i386/Kconfig
>>>   Using /home/bor/src/linux-git as source for kernel
>>>   GEN     /home/bor/build/linux-2.6.19/Makefile
>>>   CHK     include/linux/version.h
>>>   CHK     include/linux/utsrelease.h
>>>   CHK     include/linux/compile.h
>>>   CC [M]  drivers/usb/core/usb.o
>>>   CC [M]  drivers/usb/core/hub.o
>>>   CC [M]  drivers/usb/core/hcd.o
>>>   CC [M]  drivers/usb/core/urb.o
>>>   CC [M]  drivers/usb/core/message.o
>>>   CC [M]  drivers/usb/core/driver.o
>>>   CC [M]  drivers/usb/core/config.o
>>>   CC [M]  drivers/usb/core/file.o
>>>   CC [M]  drivers/usb/core/buffer.o
>>>   CC [M]  drivers/usb/core/sysfs.o
>>>   CC [M]  drivers/usb/core/endpoint.o
>>>   CC [M]  drivers/usb/core/devio.o
>>>   CC [M]  drivers/usb/core/notify.o
>>>   CC [M]  drivers/usb/core/generic.o
>>>   CC [M]  drivers/usb/core/hcd-pci.o
>>>   CC [M]  drivers/usb/core/inode.o
>>>   CC [M]  drivers/usb/core/devices.o
>>>   LD [M]  drivers/usb/core/usbcore.o
>>>   CC      drivers/usb/host/pci-quirks.o
>>>   LD      drivers/usb/host/built-in.o
>>>  
>>> Sorry? How comes it still compiles something into main kernel?
>> It's just a quirk of the build machinery.
>> The built-in.o file should be 8 bytes or so, with nothing
>> really in it.
> 
> Not so.  Randy, you missed the line for pci-quirks.o.  It really is a 
> non-trivial object file and it really goes into the main kernel.
> 
> That's because it actually is a PCI driver, living in a USB source 
> directory.  It handles the quirks needed by various PCI-based USB host 
> controllers.

Damm.  Thanks, Alan.

-- 
~Randy
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