Re: [PATCH 6/6] drm/i915/mst: use min_array() and max_array() instead of hand-rolling

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On Thu, Jan 30, 2025 at 04:35:06PM +0200, Imre Deak wrote:
> On Wed, Jan 29, 2025 at 04:46:38PM +0200, Jani Nikula wrote:
> > Improve code clarity by using existing min_array() and max_array()
> > helpers to find the lowest and highest values in an array.
> > 
> > Signed-off-by: Jani Nikula <jani.nikula@xxxxxxxxx>
> 
> Reviewed-by: Imre Deak <imre.deak@xxxxxxxxx>
> 
> > ---
> >  drivers/gpu/drm/i915/display/intel_dp_mst.c | 13 +++----------
> >  1 file changed, 3 insertions(+), 10 deletions(-)
> > 
> > diff --git a/drivers/gpu/drm/i915/display/intel_dp_mst.c b/drivers/gpu/drm/i915/display/intel_dp_mst.c
> > index a4ed4f379d1e..60b003bcd1ee 100644
> > --- a/drivers/gpu/drm/i915/display/intel_dp_mst.c
> > +++ b/drivers/gpu/drm/i915/display/intel_dp_mst.c
> > @@ -391,7 +391,7 @@ static int mst_stream_dsc_compute_link_config(struct intel_dp *intel_dp,
> >  {
> >  	struct intel_display *display = to_intel_display(intel_dp);
> >  	struct intel_connector *connector = to_intel_connector(conn_state->connector);
> > -	int i, num_bpc;
> > +	int num_bpc;
> >  	u8 dsc_bpc[3] = {};
> >  	int min_bpp, max_bpp, sink_min_bpp, sink_max_bpp;
> >  	int min_compressed_bpp, max_compressed_bpp;
> > @@ -405,15 +405,8 @@ static int mst_stream_dsc_compute_link_config(struct intel_dp *intel_dp,
> >  	drm_dbg_kms(display->drm, "DSC Source supported min bpp %d max bpp %d\n",
> >  		    min_bpp, max_bpp);
> >  
> > -	sink_max_bpp = dsc_bpc[0] * 3;
> > -	sink_min_bpp = sink_max_bpp;
> > -
> > -	for (i = 1; i < num_bpc; i++) {
> > -		if (sink_min_bpp > dsc_bpc[i] * 3)
> > -			sink_min_bpp = dsc_bpc[i] * 3;
> > -		if (sink_max_bpp < dsc_bpc[i] * 3)
> > -			sink_max_bpp = dsc_bpc[i] * 3;
> > -	}
> > +	sink_min_bpp = min_array(dsc_bpc, num_bpc) * 3;
> > +	sink_max_bpp = max_array(dsc_bpc, num_bpc) * 3;

Does linux/minmax.h need to be included explicitly for this?

> >  
> >  	drm_dbg_kms(display->drm, "DSC Sink supported min bpp %d max bpp %d\n",
> >  		    sink_min_bpp, sink_max_bpp);
> > -- 
> > 2.39.5
> > 



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