diff --git a/drivers/gpu/drm/radeon/cik.c b/drivers/gpu/drm/radeon/cik.c
index 5c42877fd6fbf6fc00f5439ab869e64114c60822..de402657091e6a6e6ffd21a068a430dc06e581a9 100644
--- a/drivers/gpu/drm/radeon/cik.c
+++ b/drivers/gpu/drm/radeon/cik.c
@@ -8108,6 +8108,7 @@ int cik_irq_process(struct radeon_device *rdev)
 	if (queue_thermal)
 		schedule_work(&rdev->pm.dpm.thermal.work);
 	rdev->ih.rptr = rptr;
+	WREG32(IH_RB_RPTR, rptr);
 	atomic_set(&rdev->ih.lock, 0);
 
 	/* make sure wptr hasn't changed while processing */
diff --git a/drivers/gpu/drm/radeon/evergreen.c b/drivers/gpu/drm/radeon/evergreen.c
index 14d90dc376e7165a613cf1ed9e9a7862e9893577..11e3e99a9f0194f57dda68f50e6e5439894f0387 100644
--- a/drivers/gpu/drm/radeon/evergreen.c
+++ b/drivers/gpu/drm/radeon/evergreen.c
@@ -4919,6 +4919,7 @@ int evergreen_irq_process(struct radeon_device *rdev)
 	if (queue_thermal && rdev->pm.dpm_enabled)
 		schedule_work(&rdev->pm.dpm.thermal.work);
 	rdev->ih.rptr = rptr;
+	WREG32(IH_RB_RPTR, rptr);
 	atomic_set(&rdev->ih.lock, 0);
 
 	/* make sure wptr hasn't changed while processing */
diff --git a/drivers/gpu/drm/radeon/r600.c b/drivers/gpu/drm/radeon/r600.c
index d9a33ca768f345c2dcb34aa0bec01e705945d92a..cd5418ccf20ee2a00076eb760280e0ee7a3799b7 100644
--- a/drivers/gpu/drm/radeon/r600.c
+++ b/drivers/gpu/drm/radeon/r600.c
@@ -4331,6 +4331,7 @@ int r600_irq_process(struct radeon_device *rdev)
 	if (queue_thermal && rdev->pm.dpm_enabled)
 		schedule_work(&rdev->pm.dpm.thermal.work);
 	rdev->ih.rptr = rptr;
+	WREG32(IH_RB_RPTR, rptr);
 	atomic_set(&rdev->ih.lock, 0);
 
 	/* make sure wptr hasn't changed while processing */
diff --git a/drivers/gpu/drm/radeon/si.c b/drivers/gpu/drm/radeon/si.c
index 93dcab548a835abb604c5ba0068ea3c4c7e02d75..914b861df92cc6f85c424092a174cf31a86fc549 100644
--- a/drivers/gpu/drm/radeon/si.c
+++ b/drivers/gpu/drm/radeon/si.c
@@ -6443,6 +6443,7 @@ int si_irq_process(struct radeon_device *rdev)
 	if (queue_thermal && rdev->pm.dpm_enabled)
 		schedule_work(&rdev->pm.dpm.thermal.work);
 	rdev->ih.rptr = rptr;
+	WREG32(IH_RB_RPTR, rptr);
 	atomic_set(&rdev->ih.lock, 0);
 
 	/* make sure wptr hasn't changed while processing */