[PATCH 09/20] drm/i915/dp: Fix the device service IRQ DPCD_REV check

[Imre Deak]

From: Imre Deak <imre.deak at 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.deak at 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