Re: [PATCH] drm/i915/dp_mst: Remove duplicate intel_pfit_compute_config() call

[Rodrigo Vivi <rodrigo.vivi@intel.com>]

On Thu, Aug 06, 2026 at 03:52:33PM -0400, Rodrigo Vivi wrote:
> On Thu, Aug 06, 2026 at 12:30:16PM +0300, Jani Nikula wrote:
> > On Thu, 06 Aug 2026, Chaitanya Kumar Borah <chaitanya.kumar.borah@intel.com> wrote:
> > > mst_stream_compute_config() called intel_pfit_compute_config() twice
> > > in a row. Probably because of a bad merge. Drop the redundant duplicate
> > > call.
> > >
> > > Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
> > > Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
> > > Cc: Nemesa Garg <nemesa.garg@intel.com>
> > > Cc: Jani Nikula <jani.nikula@linux.intel.com>
> > > Fixes: 5ce9ac1531b8 ("drm/i915/mst: Call intel_pfit_compute_config() for sharpness filter")
> > 
> > Rodrigo, by the looks of it, this was an unnecessary cherry-pick for
> > fixes. The context for 5ce9ac1531b8 shows the existing call, so I don't
> > think this is a merge failure. But why it happened, no idea!
> 
> Indeed weird, I should had caught that on the fixes, I'm sorry.
> 
> but it is weird anyway, looking to
> d4686f34bbeb ("drm/i915/pfit: Call intel_pfit_compute_config() unconditionally on (e)DP/HDMI")
> 
> which is the mentioned fixed patch, it actually introduces this chunck.
> Then the fix patch introduces this again.
> 
> So, it looks like this also occurred on the drm-intel-next first anyway?

I'm sorry, I got confused by intel_dp.c vs intel_dp_mst.c.

The thing is that 

5ce9ac1531b8 ("drm/i915/mst: Call intel_pfit_compute_config() for sharpness filter")

should never had been cherry-picked because

ca97f5546f19 ("drm/i915/mst: Call intel_pfit_compute_config() for sharpness filter")

was already in the same tree.

git didn't notice it and move forward with the cherry-pick
dim couldn't have possibly noticed it and proceeded

I failed to review and notice the duplication. I'm sorry about that.

and the duplication then propagated to all the branches...

Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>

for this patch here....
I pushing it right away to drm-intel-next.

> 
> Ville, thoughts?
> 
> > 
> > BR,
> > Jani.
> > 
> > 
> > > Signed-off-by: Chaitanya Kumar Borah <chaitanya.kumar.borah@intel.com>
> > > ---
> > >  drivers/gpu/drm/i915/display/intel_dp_mst.c | 4 ----
> > >  1 file changed, 4 deletions(-)
> > >
> > > diff --git a/drivers/gpu/drm/i915/display/intel_dp_mst.c b/drivers/gpu/drm/i915/display/intel_dp_mst.c
> > > index 3be1643f8d03..57daed0b0b36 100644
> > > --- a/drivers/gpu/drm/i915/display/intel_dp_mst.c
> > > +++ b/drivers/gpu/drm/i915/display/intel_dp_mst.c
> > > @@ -761,10 +761,6 @@ static int mst_stream_compute_config(struct intel_atomic_state *state,
> > >  	pipe_config->sink_format = INTEL_OUTPUT_FORMAT_RGB;
> > >  	pipe_config->output_format = INTEL_OUTPUT_FORMAT_RGB;
> > >  
> > > -	ret = intel_pfit_compute_config(pipe_config, conn_state);
> > > -	if (ret)
> > > -		return ret;
> > > -
> > >  	ret = intel_pfit_compute_config(pipe_config, conn_state);
> > >  	if (ret)
> > >  		return ret;
> > 
> > -- 
> > Jani Nikula, Intel