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

Randy Dunlap
2006-11-22T19:13:57Z

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