diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index c1c0f7a..b74824f 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -2715,10 +2715,10 @@ enum i915_power_well_id {
 #define VLV_GU_CTL0	_MMIO(VLV_DISPLAY_BASE + 0x2030)
 #define VLV_GU_CTL1	_MMIO(VLV_DISPLAY_BASE + 0x2034)
 #define SCPD0		_MMIO(0x209c) /* 915+ only */
-#define IER		_MMIO(0x20a0)
-#define IIR		_MMIO(0x20a4)
-#define IMR		_MMIO(0x20a8)
-#define ISR		_MMIO(0x20ac)
+#define GEN2_IER	_MMIO(0x20a0)
+#define GEN2_IIR	_MMIO(0x20a4)
+#define GEN2_IMR	_MMIO(0x20a8)
+#define GEN2_ISR	_MMIO(0x20ac)
 #define VLV_GUNIT_CLOCK_GATE	_MMIO(VLV_DISPLAY_BASE + 0x2060)
 #define   GINT_DIS		(1 << 22)
 #define   GCFG_DIS		(1 << 8)