diff --git a/drivers/gpu/drm/msm/Makefile b/drivers/gpu/drm/msm/Makefile
index b3c45130a5e2..ae70fca6ee3b 100644
--- a/drivers/gpu/drm/msm/Makefile
+++ b/drivers/gpu/drm/msm/Makefile
@@ -68,7 +68,6 @@ msm-y := \
 	disp/dpu1/dpu_hw_util.o \
 	disp/dpu1/dpu_hw_vbif.o \
 	disp/dpu1/dpu_io_util.o \
-	disp/dpu1/dpu_irq.o \
 	disp/dpu1/dpu_kms.o \
 	disp/dpu1/dpu_mdss.o \
 	disp/dpu1/dpu_plane.o \
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_core_irq.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_core_irq.c
index 879c13fe74e0..9d5a8d217bc6 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_core_irq.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_core_irq.c
@@ -376,10 +376,7 @@ void dpu_core_irq_preinstall(struct dpu_kms *dpu_kms)
 	struct msm_drm_private *priv;
 	int i;
 
-	if (!dpu_kms) {
-		DPU_ERROR("invalid dpu_kms\n");
-		return;
-	} else if (!dpu_kms->dev) {
+	if (!dpu_kms->dev) {
 		DPU_ERROR("invalid drm device\n");
 		return;
 	} else if (!dpu_kms->dev->dev_private) {
@@ -410,20 +407,12 @@ void dpu_core_irq_preinstall(struct dpu_kms *dpu_kms)
 	}
 }
 
-int dpu_core_irq_postinstall(struct dpu_kms *dpu_kms)
-{
-	return 0;
-}
-
 void dpu_core_irq_uninstall(struct dpu_kms *dpu_kms)
 {
 	struct msm_drm_private *priv;
 	int i;
 
-	if (!dpu_kms) {
-		DPU_ERROR("invalid dpu_kms\n");
-		return;
-	} else if (!dpu_kms->dev) {
+	if (!dpu_kms->dev) {
 		DPU_ERROR("invalid drm device\n");
 		return;
 	} else if (!dpu_kms->dev->dev_private) {
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_core_irq.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_core_irq.h
index 5e98bba46af5..884f77fa3eb6 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_core_irq.h
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_core_irq.h
@@ -23,13 +23,6 @@
  */
 void dpu_core_irq_preinstall(struct dpu_kms *dpu_kms);
 
-/**
- * dpu_core_irq_postinstall - perform post-installation of core IRQ handler
- * @dpu_kms:		DPU handle
- * @return:		0 if success; error code otherwise
- */
-int dpu_core_irq_postinstall(struct dpu_kms *dpu_kms);
-
 /**
  * dpu_core_irq_uninstall - uninstall core IRQ handler
  * @dpu_kms:		DPU handle
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_irq.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_irq.c
deleted file mode 100644
index d5e6ce0140cf..000000000000
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_irq.c
+++ /dev/null
@@ -1,66 +0,0 @@
-/* Copyright (c) 2015-2018, The Linux Foundation. All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 and
- * only version 2 as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
-
-#define pr_fmt(fmt)	"[drm:%s:%d] " fmt, __func__, __LINE__
-
-#include <linux/irqdomain.h>
-#include <linux/irq.h>
-#include <linux/kthread.h>
-
-#include "dpu_irq.h"
-#include "dpu_core_irq.h"
-
-irqreturn_t dpu_irq(struct msm_kms *kms)
-{
-	struct dpu_kms *dpu_kms = to_dpu_kms(kms);
-
-	return dpu_core_irq(dpu_kms);
-}
-
-void dpu_irq_preinstall(struct msm_kms *kms)
-{
-	struct dpu_kms *dpu_kms = to_dpu_kms(kms);
-
-	if (!dpu_kms->dev || !dpu_kms->dev->dev) {
-		pr_err("invalid device handles\n");
-		return;
-	}
-
-	dpu_core_irq_preinstall(dpu_kms);
-}
-
-int dpu_irq_postinstall(struct msm_kms *kms)
-{
-	struct dpu_kms *dpu_kms = to_dpu_kms(kms);
-	int rc;
-
-	if (!kms) {
-		DPU_ERROR("invalid parameters\n");
-		return -EINVAL;
-	}
-
-	rc = dpu_core_irq_postinstall(dpu_kms);
-
-	return rc;
-}
-
-void dpu_irq_uninstall(struct msm_kms *kms)
-{
-	struct dpu_kms *dpu_kms = to_dpu_kms(kms);
-
-	if (!kms) {
-		DPU_ERROR("invalid parameters\n");
-		return;
-	}
-
-	dpu_core_irq_uninstall(dpu_kms);
-}
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_irq.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_irq.h
deleted file mode 100644
index 3e147f7176e2..000000000000
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_irq.h
+++ /dev/null
@@ -1,59 +0,0 @@
-/* Copyright (c) 2015-2018, The Linux Foundation. All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 and
- * only version 2 as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
-
-#ifndef __DPU_IRQ_H__
-#define __DPU_IRQ_H__
-
-#include <linux/kernel.h>
-#include <linux/irqdomain.h>
-
-#include "msm_kms.h"
-
-/**
- * dpu_irq_controller - define MDSS level interrupt controller context
- * @enabled_mask:	enable status of MDSS level interrupt
- * @domain:		interrupt domain of this controller
- */
-struct dpu_irq_controller {
-	unsigned long enabled_mask;
-	struct irq_domain *domain;
-};
-
-/**
- * dpu_irq_preinstall - perform pre-installation of MDSS IRQ handler
- * @kms:		pointer to kms context
- * @return:		none
- */
-void dpu_irq_preinstall(struct msm_kms *kms);
-
-/**
- * dpu_irq_postinstall - perform post-installation of MDSS IRQ handler
- * @kms:		pointer to kms context
- * @return:		0 if success; error code otherwise
- */
-int dpu_irq_postinstall(struct msm_kms *kms);
-
-/**
- * dpu_irq_uninstall - uninstall MDSS IRQ handler
- * @drm_dev:		pointer to kms context
- * @return:		none
- */
-void dpu_irq_uninstall(struct msm_kms *kms);
-
-/**
- * dpu_irq - MDSS level IRQ handler
- * @kms:		pointer to kms context
- * @return:		interrupt handling status
- */
-irqreturn_t dpu_irq(struct msm_kms *kms);
-
-#endif /* __DPU_IRQ_H__ */
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
index f95a76aede68..842250566915 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
@@ -734,10 +734,30 @@ static void _dpu_kms_set_encoder_mode(struct msm_kms *kms,
 			encoder->base.id, rc);
 }
 
+static irqreturn_t dpu_irq(struct msm_kms *kms)
+{
+	struct dpu_kms *dpu_kms = to_dpu_kms(kms);
+
+	return dpu_core_irq(dpu_kms);
+}
+
+static void dpu_irq_preinstall(struct msm_kms *kms)
+{
+	struct dpu_kms *dpu_kms = to_dpu_kms(kms);
+
+	dpu_core_irq_preinstall(dpu_kms);
+}
+
+static void dpu_irq_uninstall(struct msm_kms *kms)
+{
+	struct dpu_kms *dpu_kms = to_dpu_kms(kms);
+
+	dpu_core_irq_uninstall(dpu_kms);
+}
+
 static const struct msm_kms_funcs kms_funcs = {
 	.hw_init         = dpu_kms_hw_init,
 	.irq_preinstall  = dpu_irq_preinstall,
-	.irq_postinstall = dpu_irq_postinstall,
 	.irq_uninstall   = dpu_irq_uninstall,
 	.irq             = dpu_irq,
 	.prepare_commit  = dpu_kms_prepare_commit,
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h
index 611c88c1ba10..c15d239e9832 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h
@@ -30,7 +30,6 @@
 #include "dpu_hw_top.h"
 #include "dpu_io_util.h"
 #include "dpu_rm.h"
-#include "dpu_irq.h"
 #include "dpu_core_perf.h"
 
 #define DRMID(x) ((x) ? (x)->base.id : -1)
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_mdss.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_mdss.c
index 38576f8b90b6..b7963f6bb865 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_mdss.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_mdss.c
@@ -9,6 +9,11 @@
 
 #define HW_INTR_STATUS			0x0010
 
+struct dpu_irq_controller {
+	unsigned long enabled_mask;
+	struct irq_domain *domain;
+};
+
 struct dpu_mdss {
 	struct msm_mdss base;
 	void __iomem *mmio;
