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Re: [PATCH] libertas: remove ifdef OLPC noise

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On Wed, 2019-01-16 at 18:04 +0200, Kalle Valo wrote:
> Lubomir Rintel <lkundrak@xxxxx> writes:
> 
> > <asm/olpc.h> provides machine_is_olpc() stub for CONFIG_OLPC=n,
> > compiler should just optimize the unneeded bits away.
> > 
> > Signed-off-by: Lubomir Rintel <lkundrak@xxxxx>
> > ---
> >  drivers/net/wireless/marvell/libertas/if_usb.c | 10 ----------
> >  1 file changed, 10 deletions(-)
> > 
> > diff --git a/drivers/net/wireless/marvell/libertas/if_usb.c b/drivers/net/wireless/marvell/libertas/if_usb.c
> > index 220dcdee8d2b..7b61c599948e 100644
> > --- a/drivers/net/wireless/marvell/libertas/if_usb.c
> > +++ b/drivers/net/wireless/marvell/libertas/if_usb.c
> > @@ -12,9 +12,7 @@
> >  #include <linux/usb.h>
> >  #include <linux/olpc-ec.h>
> >  
> > -#ifdef CONFIG_OLPC
> >  #include <asm/olpc.h>
> > -#endif
> 
> Using asm directory looked odd to me so I did some investigation:
> 
> $ find -name olpc.h
> ./arch/x86/include/asm/olpc.h
> 
> Did you build this on something else than x86? For example, will the
> compiler find olpc.h when building for arm?

Uh, no. You're right, this indeed breaks on non-x86.

Perhaps olpc-ec.h should provide something that could tell whether the
EC is available that could be used instead of machine_is_olpc(), or the
olpc.h moved outside arch/x86.

For now, please just ignore the patch..

Lubo




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