On Thu, Jun 19, 2025 at 09:56:29AM +0530, Chaitanya Kumar Borah wrote: > Avoid reading the PCON capabilities redundantly on non-branch devices. > > v2: > - Make commit description more accurate. (Imre) > - Clear intel_dp->pcon_dsc_dpcd irrespective of presense of PCON. (Imre) > > Signed-off-by: Chaitanya Kumar Borah <chaitanya.kumar.bo...@intel.com>
Reviewed-by: Imre Deak <imre.d...@intel.com> > --- > drivers/gpu/drm/i915/display/intel_dp.c | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/drivers/gpu/drm/i915/display/intel_dp.c > b/drivers/gpu/drm/i915/display/intel_dp.c > index 277b40b13948..f48912f308df 100644 > --- a/drivers/gpu/drm/i915/display/intel_dp.c > +++ b/drivers/gpu/drm/i915/display/intel_dp.c > @@ -3726,6 +3726,9 @@ static void intel_dp_get_pcon_dsc_cap(struct intel_dp > *intel_dp) > > memset(intel_dp->pcon_dsc_dpcd, 0, sizeof(intel_dp->pcon_dsc_dpcd)); > > + if (!drm_dp_is_branch(intel_dp->dpcd)) > + return; > + > if (drm_dp_dpcd_read(&intel_dp->aux, DP_PCON_DSC_ENCODER, > intel_dp->pcon_dsc_dpcd, > sizeof(intel_dp->pcon_dsc_dpcd)) < 0) > -- > 2.25.1 >
