Re: [v2] drm/i915/display: Fix mode private_flags comparison at atomic_check

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> -----Original Message-----
> From: Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxxxx>
> Sent: Thursday, March 26, 2020 5:38 PM
> To: Shankar, Uma <uma.shankar@xxxxxxxxx>; intel-gfx@xxxxxxxxxxxxxxxxxxxxx
> Cc: Ville Syrjä <ville.syrjala@xxxxxxxxxxxxxxx>; Kai Vehmanen
> <kai.vehmanen@xxxxxxxxxxxxxxx>; Souza, Jose <jose.souza@xxxxxxxxx>; Khor, Swee
> Aun <swee.aun.khor@xxxxxxxxx>
> Subject: Re: [v2] drm/i915/display: Fix mode private_flags comparison at
> atomic_check
> 
> Op 26-03-2020 om 13:24 schreef Uma Shankar:
> > This patch fixes the private_flags of mode to be checked and compared
> > against uapi.mode and not from hw.mode. This helps properly trigger
> > modeset at boot if desired by driver.
> >
> > It helps resolve audio_codec initialization issues if display is
> > connected at boot. Initial discussion on this issue has happened on
> > below thread:
> > https://patchwork.freedesktop.org/series/74828/
> >
> > v2: No functional change. Fixed the Closes tag and added Maarten's RB.
> >
> > Cc: Ville Syrjä <ville.syrjala@xxxxxxxxxxxxxxx>
> > Cc: Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxxxx>
> > Cc: Kai Vehmanen <kai.vehmanen@xxxxxxxxxxxxxxx>
> > Cc: Souza, Jose <jose.souza@xxxxxxxxx>
> > Closes: https://gitlab.freedesktop.org/drm/intel/issues/1363
> > Suggested-by: Ville Syrjä <ville.syrjala@xxxxxxxxxxxxxxx>
> > Signed-off-by: Uma Shankar <uma.shankar@xxxxxxxxx>
> > Signed-off-by: SweeAun Khor <swee.aun.khor@xxxxxxxxx>
> > Reviewed-by: Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxxxx>
> > ---
> >  drivers/gpu/drm/i915/display/intel_display.c | 4 ++--
> >  1 file changed, 2 insertions(+), 2 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/i915/display/intel_display.c
> > b/drivers/gpu/drm/i915/display/intel_display.c
> > index fe55c7c713f1..e630429af2c0 100644
> > --- a/drivers/gpu/drm/i915/display/intel_display.c
> > +++ b/drivers/gpu/drm/i915/display/intel_display.c
> > @@ -14747,8 +14747,8 @@ static int intel_atomic_check(struct drm_device *dev,
> >  	/* Catch I915_MODE_FLAG_INHERITED */
> >  	for_each_oldnew_intel_crtc_in_state(state, crtc, old_crtc_state,
> >  					    new_crtc_state, i) {
> > -		if (new_crtc_state->hw.mode.private_flags !=
> > -		    old_crtc_state->hw.mode.private_flags)
> > +		if (new_crtc_state->uapi.mode.private_flags !=
> > +		    old_crtc_state->uapi.mode.private_flags)
> >  			new_crtc_state->uapi.mode_changed = true;
> >  	}
> >
> 
> Still missing the fixes tags!

My Bad, updated.


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