diff --git a/drivers/gpu/drm/i915/display/intel_cdclk.c b/drivers/gpu/drm/i915/display/intel_cdclk.c
index 189ae2d3cfc9..7bc9b956554b 100644
--- a/drivers/gpu/drm/i915/display/intel_cdclk.c
+++ b/drivers/gpu/drm/i915/display/intel_cdclk.c
@@ -1256,9 +1256,22 @@ static void skl_sanitize_cdclk(struct intel_display *display)
 	cdctl = intel_de_read(display, CDCLK_CTL);
 	expected = (cdctl & CDCLK_FREQ_SEL_MASK) |
 		skl_cdclk_decimal(display->cdclk.hw.cdclk);
-	if (cdctl == expected)
-		/* All well; nothing to sanitize */
-		return;
+
+	if (cdctl != expected) {
+		cdctl &= ~CDCLK_FREQ_DECIMAL_MASK;
+		cdctl |= expected & CDCLK_FREQ_DECIMAL_MASK;
+
+		if (cdctl != expected)
+			goto sanitize;
+
+		drm_dbg_kms(display->drm, "Sanitizing CDCLK decimal divider (CDCLK_CTL 0x%x, expected 0x%x)\n",
+			    intel_de_read(display, CDCLK_CTL), expected);
+
+		intel_de_write(display, CDCLK_CTL, expected);
+	}
+
+	/* All well; nothing to sanitize */
+	return;
 
 sanitize:
 	drm_dbg_kms(display->drm, "Sanitizing cdclk programmed by pre-os\n");
@@ -2354,11 +2367,25 @@ static void bxt_sanitize_cdclk(struct intel_display *display)
 	 * (PIPE_NONE).
 	 */
 	cdctl &= ~bxt_cdclk_cd2x_pipe(display, INVALID_PIPE);
-	expected &= ~bxt_cdclk_cd2x_pipe(display, INVALID_PIPE);
+	cdctl |= bxt_cdclk_cd2x_pipe(display, INVALID_PIPE);
 
-	if (cdctl == expected)
-		/* All well; nothing to sanitize */
-		return;
+	if (cdctl != expected) {
+		if (DISPLAY_VER(display) < 20) {
+			cdctl &= ~CDCLK_FREQ_DECIMAL_MASK;
+			cdctl |= expected & CDCLK_FREQ_DECIMAL_MASK;
+		}
+
+		if (cdctl != expected)
+			goto sanitize;
+
+		drm_dbg_kms(display->drm, "Sanitizing CDCLK decimal divider (CDCLK_CTL 0x%x, expected 0x%x)\n",
+			    intel_de_read(display, CDCLK_CTL), expected);
+
+		intel_de_write(display, CDCLK_CTL, expected);
+	}
+
+	/* All well; nothing to sanitize */
+	return;
 
 sanitize:
 	drm_dbg_kms(display->drm, "Sanitizing cdclk programmed by pre-os\n");
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_context.c b/drivers/gpu/drm/i915/gem/i915_gem_context.c
index 6ac0f23570f3..aeafe1742d30 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_context.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_context.c
@@ -613,6 +613,7 @@ set_proto_ctx_engines_parallel_submit(struct i915_user_extension __user *base,
 		return -EINVAL;
 	}
 
+	slot = array_index_nospec(slot, set->num_engines);
 	if (set->engines[slot].type != I915_GEM_ENGINE_TYPE_INVALID) {
 		drm_dbg(&i915->drm,
 			"Invalid placement[%d], already occupied\n", slot);