From: Imre Deak <imre.d...@gmail.com> The DP_DEVICE_SERVICE_IRQ_VECTOR DPCD register is supported since DPCD REV 1.0, so read it out always. Flags added only by later DPCD revisions are defined as reserved/must-be-zero by earlier DP Standard versions.
Signed-off-by: Imre Deak <imre.d...@gmail.com> --- drivers/gpu/drm/i915/display/intel_dp.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c index aacea2d7b9738..6262b661d026e 100644 --- a/drivers/gpu/drm/i915/display/intel_dp.c +++ b/drivers/gpu/drm/i915/display/intel_dp.c @@ -5398,9 +5398,6 @@ static void intel_dp_check_device_service_irq(struct intel_dp *intel_dp) struct intel_display *display = to_intel_display(intel_dp); u8 val; - if (intel_dp->dpcd[DP_DPCD_REV] < 0x11) - return; - if (drm_dp_dpcd_readb(&intel_dp->aux, DP_DEVICE_SERVICE_IRQ_VECTOR, &val) != 1 || !val) return; -- 2.44.2