FAILED: patch "[PATCH] drm/i915/gen11: Wa_1408615072/Wa_1407596294 should be on GT" failed to apply to 5.15-stable tree

The patch below does not apply to the 5.15-stable tree.
If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <[email protected]>.

Possible dependencies:

d5a1224aa68c ("drm/i915/gen11: Wa_1408615072/Wa_1407596294 should be on GT list") 67b858dd8993 ("drm/i915/gen11: Moving WAs to icl_gt_workarounds_init()")

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From d5a1224aa68c8b124a4c5c390186e571815ed390 Mon Sep 17 00:00:00 2001
From: Matt Roper <[email protected]>
Date: Wed, 1 Feb 2023 14:28:29 -0800
Subject: [PATCH] drm/i915/gen11: Wa_1408615072/Wa_1407596294 should be on GT
list

The UNSLICE_UNIT_LEVEL_CLKGATE register programmed by this workaround has 'BUS' style reset, indicating that it does not lose its value on engine resets. Furthermore, this register is part of the GT forcewake domain rather than the RENDER domain, so it should not be impacted by RCS engine resets. As such, we should implement this on the GT workaround list rather than an engine list.

Bspec: 19219

index 949c19339015..a0740308555d 100644
@@ -1355,6 +1355,13 @@ icl_gt_workarounds_init(struct intel_gt *gt, struct i915_wa_list *wal)
 		    GAMT_CHKN_BIT_REG,
 		    GAMT_CHKN_DISABLE_L3_COH_PIPE);
 
+	/*
+	 * Wa_1408615072:icl,ehl  (vsunit)
+	 * Wa_1407596294:icl,ehl  (hsunit)
+	 */
+	wa_write_or(wal, UNSLICE_UNIT_LEVEL_CLKGATE,
+		    VSUNIT_CLKGATE_DIS | HSUNIT_CLKGATE_DIS);
+
 	/* Wa_1407352427:icl,ehl */
 	wa_write_or(wal, UNSLICE_UNIT_LEVEL_CLKGATE2,
 		    PSDUNIT_CLKGATE_DIS);

@@ -2539,13 +2546,6 @@ rcs_engine_wa_init(struct intel_engine_cs *engine, struct i915_wa_list *wal)
 		wa_masked_en(wal, GEN9_CSFE_CHICKEN1_RCS,
 			     GEN11_ENABLE_32_PLANE_MODE);
 
-		/*
-		 * Wa_1408615072:icl,ehl  (vsunit)
-		 * Wa_1407596294:icl,ehl  (hsunit)
-		 */
-		wa_write_or(wal, UNSLICE_UNIT_LEVEL_CLKGATE,
-			    VSUNIT_CLKGATE_DIS | HSUNIT_CLKGATE_DIS);
-
 		/*
 		 * Wa_1408767742:icl[a2..forever],ehl[all]
 		 * Wa_1605460711:icl[a0..c0]