[PATCH 09/23] drm/sis: use drm_mm instead of drm_sman

[Daniel Vetter]

On Sat, Oct 29, 2011 at 08:52:25AM +0200, Tormod Volden wrote:
> On Sat, Oct 29, 2011 at 2:25 AM, Daniel Vetter <daniel at ffwll.ch> wrote:
> > On Sat, Oct 29, 2011 at 12:47:18AM +0200, Tormod Volden wrote:
> >> On Thu, Oct 27, 2011 at 1:07 PM, Daniel Vetter <daniel.vetter at ffwll.ch> wrote:
> >> ...
> >> > @@ -139,13 +99,35 @@ static int sis_drm_alloc(struct drm_device *dev, struct drm_file *file,
> >> ...
> >> > +#if defined(CONFIG_FB_SIS) || defined(CONFIG_FB_SIS_MODULE)
> >> > +               item->req.size = mem->size;
> >> > +               sis_malloc(&item->req);
> >> > +               if (item->req.size == 0)
> >> > +                       retval = -ENOMEN;
> >>
> >> ENOMEN is omen, I guess this was not compile tested with either CONFIG?
> >
> > Oh gosh, this is embarassing ;-) I've indeed fumbled this and forgotten to
> > check that config option. Smashed your patch on top of mine. btw, do you
> > have some actual hw to test this on, or have you just checked out of
> > curiosity?
> 
> I do not have sis hardware, but I am testing this on savage and my
> config happened to have this option set.
> 
> By the way, is there anything in special I can try to (stress-)test
> this? I have tested Quake III demos and multiple parallel GL
> screensaver hacks. On the other hand, is there a possibility this
> might fix some random DMA crashes or lock-ups (I mean the savage
> locking fix here)?

Well, it only changes the exit path, i.e. the changed code only gets
executed when you close a direct rendering client. So if you can restart
openaren (and the Xserver sometimes, too) that would test this code
decently. The locking is imo pretty borked, so don't expect miracles.
Also, I don't change anything of the hw programming, so this won't help
for gpu lockups and similar stuff.

If it works for you, Tested-by for the savage patch highly appreciated.

Thanks, Daniel
-- 
Daniel Vetter
Mail: daniel at ffwll.ch
Mobile: +41 (0)79 365 57 48