Messages in this thread | | | Date | Tue, 17 Jul 2018 09:33:52 +0200 | From | Lukas Wunner <> | Subject | Re: [Nouveau] [PATCH v2 2/3] drm/nouveau: Fix runtime PM leak in nv50_disp_atomic_commit() |
| |
On Thu, Jul 12, 2018 at 01:02:53PM -0400, Lyude Paul wrote: > --- a/drivers/gpu/drm/nouveau/dispnv50/disp.c > +++ b/drivers/gpu/drm/nouveau/dispnv50/disp.c > @@ -1878,7 +1878,7 @@ nv50_disp_atomic_commit(struct drm_device *dev, > nv50_disp_atomic_commit_tail(state); > > drm_for_each_crtc(crtc, dev) { > - if (crtc->state->enable) { > + if (crtc->state->active) { > if (!drm->have_disp_power_ref) { > drm->have_disp_power_ref = true; > return 0;
Somewhat tangential comment on this older patch, since you continue to dig around in the runtime PM area:
Whenever a crtc is activated or deactivated in nouveau, we iterate over all crtcs and acquire a runtime PM if a crtc is active and previously there was no active one, or we drop a ref if none is active and previously there was an active one.
For a while now I've been thinking that it would be more straightforward to acquire a ref whenever a crtc is activated and drop one when a crtc is deactivated, i.e. hold one ref for every active crtc. That way the have_disp_power_ref variable as well as the iteration logic could be removed, leading to a simplification. Just a suggestion anyway.
Thanks,
Lukas
| |