diff --git a/drivers/gpu/drm/i915/i915_pci.c b/drivers/gpu/drm/i915/i915_pci.c
index d05aab60c1fb0..881b5d6708aa5 100644
--- a/drivers/gpu/drm/i915/i915_pci.c
+++ b/drivers/gpu/drm/i915/i915_pci.c
@@ -63,6 +63,7 @@
 	.hws_needs_physical = 1, \
 	.unfenced_needs_alignment = 1, \
 	.ring_mask = RENDER_RING, \
+	.has_snoop = true, \
 	GEN_DEFAULT_PIPEOFFSETS, \
 	CURSOR_OFFSETS
 
@@ -95,6 +96,7 @@ static const struct intel_device_info intel_i865g_info __initconst = {
 	.gen = 3, .num_pipes = 2, \
 	.has_gmch_display = 1, \
 	.ring_mask = RENDER_RING, \
+	.has_snoop = true, \
 	GEN_DEFAULT_PIPEOFFSETS, \
 	CURSOR_OFFSETS
 
@@ -157,6 +159,7 @@ static const struct intel_device_info intel_pineview_info __initconst = {
 	.has_hotplug = 1, \
 	.has_gmch_display = 1, \
 	.ring_mask = RENDER_RING, \
+	.has_snoop = true, \
 	GEN_DEFAULT_PIPEOFFSETS, \
 	CURSOR_OFFSETS
 
@@ -197,6 +200,7 @@ static const struct intel_device_info intel_gm45_info __initconst = {
 	.has_hotplug = 1, \
 	.has_gmbus_irq = 1, \
 	.ring_mask = RENDER_RING | BSD_RING, \
+	.has_snoop = true, \
 	GEN_DEFAULT_PIPEOFFSETS, \
 	CURSOR_OFFSETS
 
@@ -320,6 +324,7 @@ static const struct intel_device_info intel_valleyview_info __initconst = {
 	.has_hotplug = 1,
 	.has_aliasing_ppgtt = 1,
 	.has_full_ppgtt = 1,
+	.has_snoop = true,
 	.ring_mask = RENDER_RING | BSD_RING | BLT_RING,
 	.display_mmio_offset = VLV_DISPLAY_BASE,
 	GEN_DEFAULT_PIPEOFFSETS,
@@ -411,6 +416,7 @@ static const struct intel_device_info intel_cherryview_info __initconst = {
 	.has_aliasing_ppgtt = 1,
 	.has_full_ppgtt = 1,
 	.has_reset_engine = 1,
+	.has_snoop = true,
 	.display_mmio_offset = VLV_DISPLAY_BASE,
 	GEN_CHV_PIPEOFFSETS,
 	CURSOR_OFFSETS,
@@ -473,6 +479,7 @@ static const struct intel_device_info intel_skylake_gt4_info __initconst = {
 	.has_full_ppgtt = 1, \
 	.has_full_48bit_ppgtt = 1, \
 	.has_reset_engine = 1, \
+	.has_snoop = true, \
 	GEN_DEFAULT_PIPEOFFSETS, \
 	IVB_CURSOR_OFFSETS, \
 	BDW_COLORS
diff --git a/drivers/gpu/drm/i915/intel_device_info.c b/drivers/gpu/drm/i915/intel_device_info.c
index 5f91ddc78c7a3..b17f7045c8f84 100644
--- a/drivers/gpu/drm/i915/intel_device_info.c
+++ b/drivers/gpu/drm/i915/intel_device_info.c
@@ -412,7 +412,7 @@ void intel_device_info_runtime_init(struct drm_i915_private *dev_priv)
 	else if (INTEL_INFO(dev_priv)->gen >= 9)
 		gen9_sseu_info_init(dev_priv);
 
-	info->has_snoop = !info->has_llc;
+	WARN_ON(info->has_snoop != !info->has_llc);
 
 	DRM_DEBUG_DRIVER("slice mask: %04x\n", info->sseu.slice_mask);
 	DRM_DEBUG_DRIVER("slice total: %u\n", hweight8(info->sseu.slice_mask));