ubuntu-audio-dev team mailing list archive

[Brad Figg <brad.figg@xxxxxxxxxxxxx>]

On 05/27/2010 01:11 PM, David Henningsson wrote:
> On 2010-05-26 06:30, Brad Figg wrote:
> > A recent change throughout the kernel changed various spin_lock_*
> > functions to raw_spin_lock_* functions. This change prevents Takashi's
> > daily snapshot from building on either karmic or lucid.
> >
> > I'm not able to investigate a fix for this right away so I'm only
> > building for Maverick for now. I will get back to this as soon as I
> > can.
> >
> > Brad
>
> Correct me if I'm wrong, but...
>
> I remember JKacur talking about this on his real-time session at LAC. As
> I understand it, it would be a sufficient fix to do add lines like these:
>
> #define raw_spin_lock(a) spin_lock(a)
> #define raw_spin_unlock(a) spin_unlock(a)
>
> ...etc, in a suitable place, e g /include/linux/spinlock.h. This is
> because the distinction between regular spinlocks and raw/arch spinlocks
> are new features in 2.6.33.
>
> // David
>
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I've not looked into it but that is probably close to correct. However, for
me to get this in to fix the build issues I'm experiencing I need to either
add a patch to the alsa snapshot I pull down each day or get a patch to
the karmic and lucid kernels accepted so I don't have to patch the alsa
snapshot.

Brad
--
Brad Figg brad.figg@xxxxxxxxxxxxx http://www.canonical.com