diff --git a/drivers/gpu/drm/radeon/cik.c b/drivers/gpu/drm/radeon/cik.c
index 2693c57de80cc55739db516b1294d4bea7df6d3e..b625646bf3e242c11d21fd268c698a502604fae0 100644
--- a/drivers/gpu/drm/radeon/cik.c
+++ b/drivers/gpu/drm/radeon/cik.c
@@ -7977,7 +7977,8 @@ int cik_irq_process(struct radeon_device *rdev)
 		case 16: /* D5 page flip */
 		case 18: /* D6 page flip */
 			DRM_DEBUG("IH: D%d flip\n", ((src_id - 8) >> 1) + 1);
-			radeon_crtc_handle_flip(rdev, (src_id - 8) >> 1);
+			if (radeon_use_pflipirq > 0)
+				radeon_crtc_handle_flip(rdev, (src_id - 8) >> 1);
 			break;
 		case 42: /* HPD hotplug */
 			switch (src_data) {
diff --git a/drivers/gpu/drm/radeon/evergreen.c b/drivers/gpu/drm/radeon/evergreen.c
index cb2043973583f6c2d8602021902e447a1154f1be..4fedd14e670aeb33e07fadcf5ff2564c2cc2681c 100644
--- a/drivers/gpu/drm/radeon/evergreen.c
+++ b/drivers/gpu/drm/radeon/evergreen.c
@@ -4964,7 +4964,8 @@ int evergreen_irq_process(struct radeon_device *rdev)
 		case 16: /* D5 page flip */
 		case 18: /* D6 page flip */
 			DRM_DEBUG("IH: D%d flip\n", ((src_id - 8) >> 1) + 1);
-			radeon_crtc_handle_flip(rdev, (src_id - 8) >> 1);
+			if (radeon_use_pflipirq > 0)
+				radeon_crtc_handle_flip(rdev, (src_id - 8) >> 1);
 			break;
 		case 42: /* HPD hotplug */
 			switch (src_data) {
diff --git a/drivers/gpu/drm/radeon/r600.c b/drivers/gpu/drm/radeon/r600.c
index 76e1616a25c86ae1b9e61751e1d536adf06c54a5..c70a504d96af5a8ac6f8a9f8e40dd2039917e467 100644
--- a/drivers/gpu/drm/radeon/r600.c
+++ b/drivers/gpu/drm/radeon/r600.c
@@ -3923,11 +3923,13 @@ int r600_irq_process(struct radeon_device *rdev)
 			break;
 		case 9: /* D1 pflip */
 			DRM_DEBUG("IH: D1 flip\n");
-			radeon_crtc_handle_flip(rdev, 0);
+			if (radeon_use_pflipirq > 0)
+				radeon_crtc_handle_flip(rdev, 0);
 			break;
 		case 11: /* D2 pflip */
 			DRM_DEBUG("IH: D2 flip\n");
-			radeon_crtc_handle_flip(rdev, 1);
+			if (radeon_use_pflipirq > 0)
+				radeon_crtc_handle_flip(rdev, 1);
 			break;
 		case 19: /* HPD/DAC hotplug */
 			switch (src_data) {
diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h
index 142cad63c3fad28e27872fee55dad7989bdecbce..9e1732eb402c5ec831c9bbd514084e7ce30462c2 100644
--- a/drivers/gpu/drm/radeon/radeon.h
+++ b/drivers/gpu/drm/radeon/radeon.h
@@ -104,6 +104,7 @@ extern int radeon_hard_reset;
 extern int radeon_vm_size;
 extern int radeon_vm_block_size;
 extern int radeon_deep_color;
+extern int radeon_use_pflipirq;
 
 /*
  * Copy from radeon_drv.h so we don't have to include both and have conflicting
diff --git a/drivers/gpu/drm/radeon/radeon_display.c b/drivers/gpu/drm/radeon/radeon_display.c
index a966074a4fbaea80d65effff6788abf99f4beb24..3fdf87318069f1a6b26e1e37f9fd504641b19132 100644
--- a/drivers/gpu/drm/radeon/radeon_display.c
+++ b/drivers/gpu/drm/radeon/radeon_display.c
@@ -293,6 +293,18 @@ void radeon_crtc_handle_vblank(struct radeon_device *rdev, int crtc_id)
 	if (radeon_crtc == NULL)
 		return;
 
+	/* Skip the pageflip completion check below (based on polling) on
+	 * asics which reliably support hw pageflip completion irqs. pflip
+	 * irqs are a reliable and race-free method of handling pageflip
+	 * completion detection. A use_pflipirq module parameter < 2 allows
+	 * to override this in case of asics with faulty pflip irqs.
+	 * A module parameter of 0 would only use this polling based path,
+	 * a parameter of 1 would use pflip irq only as a backup to this
+	 * path, as in Linux 3.16.
+	 */
+	if ((radeon_use_pflipirq == 2) && ASIC_IS_DCE4(rdev))
+		return;
+
 	spin_lock_irqsave(&rdev->ddev->event_lock, flags);
 	if (radeon_crtc->flip_status != RADEON_FLIP_SUBMITTED) {
 		DRM_DEBUG_DRIVER("radeon_crtc->flip_status = %d != "
diff --git a/drivers/gpu/drm/radeon/radeon_drv.c b/drivers/gpu/drm/radeon/radeon_drv.c
index 8688e860e6a07776c66cb660539420ec26783d7e..a773830c6c40cdf8570d2d90814379eeeb6aaf14 100644
--- a/drivers/gpu/drm/radeon/radeon_drv.c
+++ b/drivers/gpu/drm/radeon/radeon_drv.c
@@ -178,6 +178,7 @@ int radeon_hard_reset = 0;
 int radeon_vm_size = 8;
 int radeon_vm_block_size = -1;
 int radeon_deep_color = 0;
+int radeon_use_pflipirq = 2;
 
 MODULE_PARM_DESC(no_wb, "Disable AGP writeback for scratch registers");
 module_param_named(no_wb, radeon_no_wb, int, 0444);
@@ -254,6 +255,9 @@ module_param_named(vm_block_size, radeon_vm_block_size, int, 0444);
 MODULE_PARM_DESC(deep_color, "Deep Color support (1 = enable, 0 = disable (default))");
 module_param_named(deep_color, radeon_deep_color, int, 0444);
 
+MODULE_PARM_DESC(use_pflipirq, "Pflip irqs for pageflip completion (0 = disable, 1 = as fallback, 2 = exclusive (default))");
+module_param_named(use_pflipirq, radeon_use_pflipirq, int, 0444);
+
 static struct pci_device_id pciidlist[] = {
 	radeon_PCI_IDS
 };
diff --git a/drivers/gpu/drm/radeon/si.c b/drivers/gpu/drm/radeon/si.c
index 806bed1758d6aad2066c12672e4fb78da756089b..011779bd2b3da677129b38709742f673bbaa3398 100644
--- a/drivers/gpu/drm/radeon/si.c
+++ b/drivers/gpu/drm/radeon/si.c
@@ -6531,7 +6531,8 @@ int si_irq_process(struct radeon_device *rdev)
 		case 16: /* D5 page flip */
 		case 18: /* D6 page flip */
 			DRM_DEBUG("IH: D%d flip\n", ((src_id - 8) >> 1) + 1);
-			radeon_crtc_handle_flip(rdev, (src_id - 8) >> 1);
+			if (radeon_use_pflipirq > 0)
+				radeon_crtc_handle_flip(rdev, (src_id - 8) >> 1);
 			break;
 		case 42: /* HPD hotplug */
 			switch (src_data) {