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
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