[Intel-gfx] [PATCH] Revert "drm/i915: Apply Wa_1406680159:icl, ehl as an engine workaround"

[Tejas Upadhyay]

This reverts commit fb899dd8ea9c4ac5928b86946e6536790981adae.

w/a on mentioned platforms not working as expected and causing
more harm on the RC6 flow.

Fixes: fb899dd8ea9c ("drm/i915: Apply Wa_1406680159:icl,ehl as an engine workaround")
Cc: Mika Kuoppala <mika.kuoppala at linux.intel.com>
Cc: Matt Roper <matthew.d.roper at intel.com>
Signed-off-by: Tejas Upadhyay <tejaskumarx.surendrakumar.upadhyay at intel.com>
---
 drivers/gpu/drm/i915/gt/intel_workarounds.c | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/drivers/gpu/drm/i915/gt/intel_workarounds.c b/drivers/gpu/drm/i915/gt/intel_workarounds.c
index b62d1e31a645..fea7fde30d4a 100644
--- a/drivers/gpu/drm/i915/gt/intel_workarounds.c
+++ b/drivers/gpu/drm/i915/gt/intel_workarounds.c
@@ -1774,11 +1774,6 @@ rcs_engine_wa_init(struct intel_engine_cs *engine, struct i915_wa_list *wal)
 		wa_write_or(wal, UNSLICE_UNIT_LEVEL_CLKGATE2,
 			    PSDUNIT_CLKGATE_DIS);
 
-		/* Wa_1406680159:icl,ehl */
-		wa_write_or(wal,
-			    SUBSLICE_UNIT_LEVEL_CLKGATE,
-			    GWUNIT_CLKGATE_DIS);
-
 		/*
 		 * Wa_1408767742:icl[a2..forever],ehl[all]
 		 * Wa_1605460711:icl[a0..c0]
-- 
2.31.1