[SRU][R][PATCH 11/22] drm/i915/dp: Fix the device service IRQ DPCD_REV check

[Werner Sembach]

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

Reviewed-by: Luca Coelho <luciano.coelho at intel.com>
Signed-off-by: Imre Deak <imre.deak at intel.com>
Link: https://patch.msgid.link/20260225164618.1261368-10-imre.deak@intel.com
Signed-off-by: Werner Sembach <wse at tuxedocomputers.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 dd1801b25819a..67376fae20ab2 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -5669,9 +5669,6 @@ 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;
-- 
2.43.0