Re: [Xen-devel] linux-next: Tree for Oct 24 (xen)

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>>> On 25.10.12 at 15:46, Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx> wrote:
> On Thu, Oct 25, 2012 at 11:48:30AM +0100, Stefano Stabellini wrote:
>> On Thu, 25 Oct 2012, Jan Beulich wrote:
>> > >>> On 24.10.12 at 23:33, Randy Dunlap <rdunlap@xxxxxxxxxxxx> wrote:
>> > > On 10/23/2012 09:19 PM, Stephen Rothwell wrote:
>> > > 
>> > >> Hi all,
>> > >> 
>> > >> Changes since 201201023:
>> > >> 
>> > > 
>> > > on x86_64:
>> > > 
>> > > drivers/built-in.o: In function `dbgp_reset_prep':
>> > > (.text+0xb96b5): undefined reference to `xen_dbgp_reset_prep'
>> > > drivers/built-in.o: In function `dbgp_external_startup':
>> > > (.text+0xb9d95): undefined reference to `xen_dbgp_external_startup'
>> > > 
>> > > 
>> > > Full randconfig file is attached.
>> > 
>> > So this is because with !USB_SUPPORT but EARLY_PRINTK_DBGP
>> > dbgp_reset_prep() and dbgp_external_startup() get pointlessly
>> > defined and exported. This got broken by the merge
>> > recommendation for the ARM side changes (originally compilation
>> > of drivers/xen/dbgp.c depended on just CONFIG_XEN_DOM0).
>> > 
>> > >From my pov, fixing the USB side would be the clean solution (i.e.
>> > putting those function definitions inside a CONFIG_USB_SUPPORT
>> > conditional).
>> >
>> > The alternative of a smaller change would be to extend the
>> > conditional around the respective xen_dbgp_...() declarations
>> > in include/linux/usb/ehci_def.h to become
>> > 
>> > #if defined(CONFIG_XEN_DOM0) && defined(CONFIG_USB_SUPPORT)
>> > 
>> > Please advise towards your preference.
>> 
>> I think that your first suggestion is the right one.
> 
> Can you guys spin up a patch pls and make sure it does not break
> compilation. Thx.

I'd really like to hear Greg's opinion on which route to take before
pointlessly trying the other one.

Jan

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