[Nouveau] [PATCH] drm/nv50: wire up pll_calc hook

[Marcin Slusarz]

On Mon, Oct 08, 2012 at 12:49:27AM +0200, Marcin Slusarz wrote:
> Fixes crash during reclocking.
> Call Trace:
>  pll_calc == NULL
>  calc_pll
>  calc_mclk
>  nv50_pm_clocks_pre
>  nouveau_pm_perflvl_set
>  nouveau_pm_trigger
>  nouveau_pm_profile_set
>  nouveau_pm_set_perflvl
>  dev_attr_store
>  sysfs_write_file
>  vfs_write
>  sys_write
>  system_call_fastpath
> 
> Signed-off-by: Marcin Slusarz <marcin.slusarz at gmail.com>
> ---
> 
> It's weird nobody noticed this... nva3+ code does not set this hook either,
> but there's no existing function to wire up...
> 
And it seems to crash in the same way, see:
http://www.phoronix.com/image-viewer.php?id=ubuntu_1210_nouvre&image=ubuntu_nouveau_pointer_lrg

BTW, reclocking crashes without this patch:
https://gitorious.org/linux-nouveau-pm/linux-nouveau-pm/commit/f3ed9b23ee611891166da9bac792a22844217c7a

Applying this patch:
https://gitorious.org/linux-nouveau-pm/linux-nouveau-pm/commit/abdd905d2bf362d48c125fd7c556c54c7ae1cbb9
would be good too, because perflvl module option is useless without it.

Marcin