[Intel-gfx] [PATCH] drm/i915: Don't preserve dpll_hw_state for slave crtc in Bigjoiner

[Jani Nikula]

On Wed, 28 Jun 2023, Stanislav Lisovskiy <stanislav.lisovskiy at intel.com> wrote:
> If we are using Bigjoiner dpll_hw_state is supposed to be exactly
> same as for master crtc, so no need to save it's state for slave crtc.

Could this help with [1]?

BR,
Jani.

[1] https://gitlab.freedesktop.org/drm/intel/-/issues/8720

>
> Signed-off-by: Stanislav Lisovskiy <stanislav.lisovskiy at intel.com>
> ---
>  drivers/gpu/drm/i915/display/intel_display.c | 1 -
>  1 file changed, 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
> index 43d6ba980780..c3e93bdde29d 100644
> --- a/drivers/gpu/drm/i915/display/intel_display.c
> +++ b/drivers/gpu/drm/i915/display/intel_display.c
> @@ -4568,7 +4568,6 @@ copy_bigjoiner_crtc_state_modeset(struct intel_atomic_state *state,
>  	saved_state->uapi = slave_crtc_state->uapi;
>  	saved_state->scaler_state = slave_crtc_state->scaler_state;
>  	saved_state->shared_dpll = slave_crtc_state->shared_dpll;
> -	saved_state->dpll_hw_state = slave_crtc_state->dpll_hw_state;
>  	saved_state->crc_enabled = slave_crtc_state->crc_enabled;
>  
>  	intel_crtc_free_hw_state(slave_crtc_state);

-- 
Jani Nikula, Intel Open Source Graphics Center