diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
index 6647fb26ef25..5e43178d07d5 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
@@ -2349,10 +2349,10 @@ void amdgpu_driver_preclose_kms(struct drm_device *dev,
 				struct drm_file *file_priv);
 int amdgpu_suspend_kms(struct drm_device *dev, bool suspend, bool fbcon);
 int amdgpu_resume_kms(struct drm_device *dev, bool resume, bool fbcon);
-u32 amdgpu_get_vblank_counter_kms(struct drm_device *dev, int crtc);
-int amdgpu_enable_vblank_kms(struct drm_device *dev, int crtc);
-void amdgpu_disable_vblank_kms(struct drm_device *dev, int crtc);
-int amdgpu_get_vblank_timestamp_kms(struct drm_device *dev, int crtc,
+u32 amdgpu_get_vblank_counter_kms(struct drm_device *dev, unsigned int pipe);
+int amdgpu_enable_vblank_kms(struct drm_device *dev, unsigned int pipe);
+void amdgpu_disable_vblank_kms(struct drm_device *dev, unsigned int pipe);
+int amdgpu_get_vblank_timestamp_kms(struct drm_device *dev, unsigned int pipe,
 				    int *max_error,
 				    struct timeval *vblank_time,
 				    unsigned flags);
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
index 9b34a3410c32..de116398fa49 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
@@ -721,7 +721,7 @@ bool amdgpu_crtc_scaling_mode_fixup(struct drm_crtc *crtc,
  * an optional accurate timestamp of when query happened.
  *
  * \param dev Device to query.
- * \param crtc Crtc to query.
+ * \param pipe Crtc to query.
  * \param flags Flags from caller (DRM_CALLED_FROM_VBLIRQ or 0).
  * \param *vpos Location where vertical scanout position should be stored.
  * \param *hpos Location where horizontal scanout position should go.
@@ -744,8 +744,9 @@ bool amdgpu_crtc_scaling_mode_fixup(struct drm_crtc *crtc,
  * unknown small number of scanlines wrt. real scanout position.
  *
  */
-int amdgpu_get_crtc_scanoutpos(struct drm_device *dev, int crtc, unsigned int flags,
-			       int *vpos, int *hpos, ktime_t *stime, ktime_t *etime,
+int amdgpu_get_crtc_scanoutpos(struct drm_device *dev, unsigned int pipe,
+			       unsigned int flags, int *vpos, int *hpos,
+			       ktime_t *stime, ktime_t *etime,
 			       const struct drm_display_mode *mode)
 {
 	u32 vbl = 0, position = 0;
@@ -760,7 +761,7 @@ int amdgpu_get_crtc_scanoutpos(struct drm_device *dev, int crtc, unsigned int fl
 	if (stime)
 		*stime = ktime_get();
 
-	if (amdgpu_display_page_flip_get_scanoutpos(adev, crtc, &vbl, &position) == 0)
+	if (amdgpu_display_page_flip_get_scanoutpos(adev, pipe, &vbl, &position) == 0)
 		ret |= DRM_SCANOUTPOS_VALID;
 
 	/* Get optional system timestamp after query. */
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
index 275f1c3dbba0..b9faaf800ae1 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
@@ -600,36 +600,36 @@ void amdgpu_driver_preclose_kms(struct drm_device *dev,
  * amdgpu_get_vblank_counter_kms - get frame count
  *
  * @dev: drm dev pointer
- * @crtc: crtc to get the frame count from
+ * @pipe: crtc to get the frame count from
  *
  * Gets the frame count on the requested crtc (all asics).
  * Returns frame count on success, -EINVAL on failure.
  */
-u32 amdgpu_get_vblank_counter_kms(struct drm_device *dev, int crtc)
+u32 amdgpu_get_vblank_counter_kms(struct drm_device *dev, unsigned int pipe)
 {
 	struct amdgpu_device *adev = dev->dev_private;
 
-	if (crtc < 0 || crtc >= adev->mode_info.num_crtc) {
-		DRM_ERROR("Invalid crtc %d\n", crtc);
+	if (pipe >= adev->mode_info.num_crtc) {
+		DRM_ERROR("Invalid crtc %u\n", pipe);
 		return -EINVAL;
 	}
 
-	return amdgpu_display_vblank_get_counter(adev, crtc);
+	return amdgpu_display_vblank_get_counter(adev, pipe);
 }
 
 /**
  * amdgpu_enable_vblank_kms - enable vblank interrupt
  *
  * @dev: drm dev pointer
- * @crtc: crtc to enable vblank interrupt for
+ * @pipe: crtc to enable vblank interrupt for
  *
  * Enable the interrupt on the requested crtc (all asics).
  * Returns 0 on success, -EINVAL on failure.
  */
-int amdgpu_enable_vblank_kms(struct drm_device *dev, int crtc)
+int amdgpu_enable_vblank_kms(struct drm_device *dev, unsigned int pipe)
 {
 	struct amdgpu_device *adev = dev->dev_private;
-	int idx = amdgpu_crtc_idx_to_irq_type(adev, crtc);
+	int idx = amdgpu_crtc_idx_to_irq_type(adev, pipe);
 
 	return amdgpu_irq_get(adev, &adev->crtc_irq, idx);
 }
@@ -638,14 +638,14 @@ int amdgpu_enable_vblank_kms(struct drm_device *dev, int crtc)
  * amdgpu_disable_vblank_kms - disable vblank interrupt
  *
  * @dev: drm dev pointer
- * @crtc: crtc to disable vblank interrupt for
+ * @pipe: crtc to disable vblank interrupt for
  *
  * Disable the interrupt on the requested crtc (all asics).
  */
-void amdgpu_disable_vblank_kms(struct drm_device *dev, int crtc)
+void amdgpu_disable_vblank_kms(struct drm_device *dev, unsigned int pipe)
 {
 	struct amdgpu_device *adev = dev->dev_private;
-	int idx = amdgpu_crtc_idx_to_irq_type(adev, crtc);
+	int idx = amdgpu_crtc_idx_to_irq_type(adev, pipe);
 
 	amdgpu_irq_put(adev, &adev->crtc_irq, idx);
 }
@@ -663,26 +663,26 @@ void amdgpu_disable_vblank_kms(struct drm_device *dev, int crtc)
  * scanout position.  (all asics).
  * Returns postive status flags on success, negative error on failure.
  */
-int amdgpu_get_vblank_timestamp_kms(struct drm_device *dev, int crtc,
+int amdgpu_get_vblank_timestamp_kms(struct drm_device *dev, unsigned int pipe,
 				    int *max_error,
 				    struct timeval *vblank_time,
 				    unsigned flags)
 {
-	struct drm_crtc *drmcrtc;
+	struct drm_crtc *crtc;
 	struct amdgpu_device *adev = dev->dev_private;
 
-	if (crtc < 0 || crtc >= dev->num_crtcs) {
-		DRM_ERROR("Invalid crtc %d\n", crtc);
+	if (pipe >= dev->num_crtcs) {
+		DRM_ERROR("Invalid crtc %u\n", pipe);
 		return -EINVAL;
 	}
 
 	/* Get associated drm_crtc: */
-	drmcrtc = &adev->mode_info.crtcs[crtc]->base;
+	crtc = &adev->mode_info.crtcs[pipe]->base;
 
 	/* Helper routine in DRM core does all the work: */
-	return drm_calc_vbltimestamp_from_scanoutpos(dev, crtc, max_error,
+	return drm_calc_vbltimestamp_from_scanoutpos(dev, pipe, max_error,
 						     vblank_time, flags,
-						     &drmcrtc->hwmode);
+						     &crtc->hwmode);
 }
 
 const struct drm_ioctl_desc amdgpu_ioctls_kms[] = {
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h
index 2b03425f9740..f6b02994442b 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h
@@ -540,11 +540,10 @@ bool amdgpu_ddc_probe(struct amdgpu_connector *amdgpu_connector, bool use_aux);
 
 void amdgpu_encoder_set_active_device(struct drm_encoder *encoder);
 
-int amdgpu_get_crtc_scanoutpos(struct drm_device *dev, int crtc,
-				      unsigned int flags,
-				      int *vpos, int *hpos, ktime_t *stime,
-				      ktime_t *etime,
-				      const struct drm_display_mode *mode);
+int amdgpu_get_crtc_scanoutpos(struct drm_device *dev, unsigned int pipe,
+			       unsigned int flags, int *vpos, int *hpos,
+			       ktime_t *stime, ktime_t *etime,
+			       const struct drm_display_mode *mode);
 
 int amdgpu_framebuffer_init(struct drm_device *dev,
 			     struct amdgpu_framebuffer *rfb,
diff --git a/drivers/gpu/drm/armada/armada_drv.c b/drivers/gpu/drm/armada/armada_drv.c
index 225034b74cda..a438886fcdb6 100644
--- a/drivers/gpu/drm/armada/armada_drv.c
+++ b/drivers/gpu/drm/armada/armada_drv.c
@@ -254,17 +254,17 @@ void armada_drm_vbl_event_remove(struct armada_crtc *dcrtc,
 }
 
 /* These are called under the vbl_lock. */
-static int armada_drm_enable_vblank(struct drm_device *dev, int crtc)
+static int armada_drm_enable_vblank(struct drm_device *dev, unsigned int pipe)
 {
 	struct armada_private *priv = dev->dev_private;
-	armada_drm_crtc_enable_irq(priv->dcrtc[crtc], VSYNC_IRQ_ENA);
+	armada_drm_crtc_enable_irq(priv->dcrtc[pipe], VSYNC_IRQ_ENA);
 	return 0;
 }
 
-static void armada_drm_disable_vblank(struct drm_device *dev, int crtc)
+static void armada_drm_disable_vblank(struct drm_device *dev, unsigned int pipe)
 {
 	struct armada_private *priv = dev->dev_private;
-	armada_drm_crtc_disable_irq(priv->dcrtc[crtc], VSYNC_IRQ_ENA);
+	armada_drm_crtc_disable_irq(priv->dcrtc[pipe], VSYNC_IRQ_ENA);
 }
 
 static struct drm_ioctl_desc armada_ioctls[] = {
diff --git a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c
index 8bc62ec407f9..6dfb63ab54d2 100644
--- a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c
+++ b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c
@@ -656,7 +656,8 @@ static void atmel_hlcdc_dc_irq_uninstall(struct drm_device *dev)
 	regmap_read(dc->hlcdc->regmap, ATMEL_HLCDC_ISR, &isr);
 }
 
-static int atmel_hlcdc_dc_enable_vblank(struct drm_device *dev, int crtc)
+static int atmel_hlcdc_dc_enable_vblank(struct drm_device *dev,
+					unsigned int pipe)
 {
 	struct atmel_hlcdc_dc *dc = dev->dev_private;
 
@@ -666,7 +667,8 @@ static int atmel_hlcdc_dc_enable_vblank(struct drm_device *dev, int crtc)
 	return 0;
 }
 
-static void atmel_hlcdc_dc_disable_vblank(struct drm_device *dev, int crtc)
+static void atmel_hlcdc_dc_disable_vblank(struct drm_device *dev,
+					  unsigned int pipe)
 {
 	struct atmel_hlcdc_dc *dc = dev->dev_private;
 
diff --git a/drivers/gpu/drm/drm_irq.c b/drivers/gpu/drm/drm_irq.c
index 6bff6d3e570e..0659d9956b7c 100644
--- a/drivers/gpu/drm/drm_irq.c
+++ b/drivers/gpu/drm/drm_irq.c
@@ -877,7 +877,7 @@ drm_get_last_vbltimestamp(struct drm_device *dev, unsigned int pipe,
  * Returns:
  * The software vblank counter.
  */
-u32 drm_vblank_count(struct drm_device *dev, int pipe)
+u32 drm_vblank_count(struct drm_device *dev, unsigned int pipe)
 {
 	struct drm_vblank_crtc *vblank = &dev->vblank[pipe];
 
diff --git a/drivers/gpu/drm/exynos/exynos_drm_crtc.c b/drivers/gpu/drm/exynos/exynos_drm_crtc.c
index 0872aa2f450f..f364d694a780 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_crtc.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_crtc.c
@@ -167,7 +167,7 @@ err_crtc:
 	return ERR_PTR(ret);
 }
 
-int exynos_drm_crtc_enable_vblank(struct drm_device *dev, int pipe)
+int exynos_drm_crtc_enable_vblank(struct drm_device *dev, unsigned int pipe)
 {
 	struct exynos_drm_private *private = dev->dev_private;
 	struct exynos_drm_crtc *exynos_crtc =
@@ -179,7 +179,7 @@ int exynos_drm_crtc_enable_vblank(struct drm_device *dev, int pipe)
 	return 0;
 }
 
-void exynos_drm_crtc_disable_vblank(struct drm_device *dev, int pipe)
+void exynos_drm_crtc_disable_vblank(struct drm_device *dev, unsigned int pipe)
 {
 	struct exynos_drm_private *private = dev->dev_private;
 	struct exynos_drm_crtc *exynos_crtc =
diff --git a/drivers/gpu/drm/exynos/exynos_drm_crtc.h b/drivers/gpu/drm/exynos/exynos_drm_crtc.h
index f87d4abda6f7..f9f365bd0257 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_crtc.h
+++ b/drivers/gpu/drm/exynos/exynos_drm_crtc.h
@@ -23,8 +23,8 @@ struct exynos_drm_crtc *exynos_drm_crtc_create(struct drm_device *drm_dev,
 					enum exynos_drm_output_type type,
 					const struct exynos_drm_crtc_ops *ops,
 					void *context);
-int exynos_drm_crtc_enable_vblank(struct drm_device *dev, int pipe);
-void exynos_drm_crtc_disable_vblank(struct drm_device *dev, int pipe);
+int exynos_drm_crtc_enable_vblank(struct drm_device *dev, unsigned int pipe);
+void exynos_drm_crtc_disable_vblank(struct drm_device *dev, unsigned int pipe);
 void exynos_drm_crtc_wait_pending_update(struct exynos_drm_crtc *exynos_crtc);
 void exynos_drm_crtc_finish_update(struct exynos_drm_crtc *exynos_crtc,
 				   struct exynos_drm_plane *exynos_plane);
diff --git a/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c b/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c
index 9a8e2da47158..f1fd986ca332 100644
--- a/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c
+++ b/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c
@@ -140,7 +140,7 @@ static irqreturn_t fsl_dcu_drm_irq(int irq, void *arg)
 	return IRQ_HANDLED;
 }
 
-static int fsl_dcu_drm_enable_vblank(struct drm_device *dev, int crtc)
+static int fsl_dcu_drm_enable_vblank(struct drm_device *dev, unsigned int pipe)
 {
 	struct fsl_dcu_drm_device *fsl_dev = dev->dev_private;
 	unsigned int value;
@@ -156,7 +156,8 @@ static int fsl_dcu_drm_enable_vblank(struct drm_device *dev, int crtc)
 	return 0;
 }
 
-static void fsl_dcu_drm_disable_vblank(struct drm_device *dev, int crtc)
+static void fsl_dcu_drm_disable_vblank(struct drm_device *dev,
+				       unsigned int pipe)
 {
 	struct fsl_dcu_drm_device *fsl_dev = dev->dev_private;
 	unsigned int value;
diff --git a/drivers/gpu/drm/gma500/psb_drv.h b/drivers/gpu/drm/gma500/psb_drv.h
index e38057b91865..e21726ecac32 100644
--- a/drivers/gpu/drm/gma500/psb_drv.h
+++ b/drivers/gpu/drm/gma500/psb_drv.h
@@ -687,15 +687,15 @@ extern void psb_irq_turn_off_dpst(struct drm_device *dev);
 extern void psb_irq_uninstall_islands(struct drm_device *dev, int hw_islands);
 extern int psb_vblank_wait2(struct drm_device *dev, unsigned int *sequence);
 extern int psb_vblank_wait(struct drm_device *dev, unsigned int *sequence);
-extern int psb_enable_vblank(struct drm_device *dev, int crtc);
-extern void psb_disable_vblank(struct drm_device *dev, int crtc);
+extern int psb_enable_vblank(struct drm_device *dev, unsigned int pipe);
+extern void psb_disable_vblank(struct drm_device *dev, unsigned int pipe);
 void
 psb_enable_pipestat(struct drm_psb_private *dev_priv, int pipe, u32 mask);
 
 void
 psb_disable_pipestat(struct drm_psb_private *dev_priv, int pipe, u32 mask);
 
-extern u32 psb_get_vblank_counter(struct drm_device *dev, int crtc);
+extern u32 psb_get_vblank_counter(struct drm_device *dev, unsigned int pipe);
 
 /* framebuffer.c */
 extern int psbfb_probed(struct drm_device *dev);
diff --git a/drivers/gpu/drm/gma500/psb_irq.c b/drivers/gpu/drm/gma500/psb_irq.c
index 624eb36511c5..78eb10902809 100644
--- a/drivers/gpu/drm/gma500/psb_irq.c
+++ b/drivers/gpu/drm/gma500/psb_irq.c
@@ -510,7 +510,7 @@ int psb_irq_disable_dpst(struct drm_device *dev)
 /*
  * It is used to enable VBLANK interrupt
  */
-int psb_enable_vblank(struct drm_device *dev, int pipe)
+int psb_enable_vblank(struct drm_device *dev, unsigned int pipe)
 {
 	struct drm_psb_private *dev_priv = dev->dev_private;
 	unsigned long irqflags;
@@ -549,7 +549,7 @@ int psb_enable_vblank(struct drm_device *dev, int pipe)
 /*
  * It is used to disable VBLANK interrupt
  */
-void psb_disable_vblank(struct drm_device *dev, int pipe)
+void psb_disable_vblank(struct drm_device *dev, unsigned int pipe)
 {
 	struct drm_psb_private *dev_priv = dev->dev_private;
 	unsigned long irqflags;
@@ -622,7 +622,7 @@ void mdfld_disable_te(struct drm_device *dev, int pipe)
 /* Called from drm generic code, passed a 'crtc', which
  * we use as a pipe index
  */
-u32 psb_get_vblank_counter(struct drm_device *dev, int pipe)
+u32 psb_get_vblank_counter(struct drm_device *dev, unsigned int pipe)
 {
 	uint32_t high_frame = PIPEAFRAMEHIGH;
 	uint32_t low_frame = PIPEAFRAMEPIXEL;
@@ -654,7 +654,7 @@ u32 psb_get_vblank_counter(struct drm_device *dev, int pipe)
 	reg_val = REG_READ(pipeconf_reg);
 
 	if (!(reg_val & PIPEACONF_ENABLE)) {
-		dev_err(dev->dev, "trying to get vblank count for disabled pipe %d\n",
+		dev_err(dev->dev, "trying to get vblank count for disabled pipe %u\n",
 								pipe);
 		goto psb_get_vblank_counter_exit;
 	}
diff --git a/drivers/gpu/drm/gma500/psb_irq.h b/drivers/gpu/drm/gma500/psb_irq.h
index d0b45ffa1126..e6a81a8c9f35 100644
--- a/drivers/gpu/drm/gma500/psb_irq.h
+++ b/drivers/gpu/drm/gma500/psb_irq.h
@@ -38,9 +38,9 @@ int psb_irq_enable_dpst(struct drm_device *dev);
 int psb_irq_disable_dpst(struct drm_device *dev);
 void psb_irq_turn_on_dpst(struct drm_device *dev);
 void psb_irq_turn_off_dpst(struct drm_device *dev);
-int  psb_enable_vblank(struct drm_device *dev, int pipe);
-void psb_disable_vblank(struct drm_device *dev, int pipe);
-u32  psb_get_vblank_counter(struct drm_device *dev, int pipe);
+int  psb_enable_vblank(struct drm_device *dev, unsigned int pipe);
+void psb_disable_vblank(struct drm_device *dev, unsigned int pipe);
+u32  psb_get_vblank_counter(struct drm_device *dev, unsigned int pipe);
 
 int mdfld_enable_te(struct drm_device *dev, int pipe);
 void mdfld_disable_te(struct drm_device *dev, int pipe);
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index 88d064e80783..bc732eb52b50 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -554,7 +554,7 @@ static void i915_enable_asle_pipestat(struct drm_device *dev)
  *   of horizontal active on the first line of vertical active
  */
 
-static u32 i8xx_get_vblank_counter(struct drm_device *dev, int pipe)
+static u32 i8xx_get_vblank_counter(struct drm_device *dev, unsigned int pipe)
 {
 	/* Gen2 doesn't have a hardware frame counter */
 	return 0;
@@ -563,7 +563,7 @@ static u32 i8xx_get_vblank_counter(struct drm_device *dev, int pipe)
 /* Called from drm generic code, passed a 'crtc', which
  * we use as a pipe index
  */
-static u32 i915_get_vblank_counter(struct drm_device *dev, int pipe)
+static u32 i915_get_vblank_counter(struct drm_device *dev, unsigned int pipe)
 {
 	struct drm_i915_private *dev_priv = dev->dev_private;
 	unsigned long high_frame;
@@ -611,7 +611,7 @@ static u32 i915_get_vblank_counter(struct drm_device *dev, int pipe)
 	return (((high1 << 8) | low) + (pixel >= vbl_start)) & 0xffffff;
 }
 
-static u32 gm45_get_vblank_counter(struct drm_device *dev, int pipe)
+static u32 gm45_get_vblank_counter(struct drm_device *dev, unsigned int pipe)
 {
 	struct drm_i915_private *dev_priv = dev->dev_private;
 	int reg = PIPE_FRMCOUNT_GM45(pipe);
@@ -672,7 +672,7 @@ static int __intel_get_crtc_scanline(struct intel_crtc *crtc)
 	return (position + crtc->scanline_offset) % vtotal;
 }
 
-static int i915_get_crtc_scanoutpos(struct drm_device *dev, int pipe,
+static int i915_get_crtc_scanoutpos(struct drm_device *dev, unsigned int pipe,
 				    unsigned int flags, int *vpos, int *hpos,
 				    ktime_t *stime, ktime_t *etime,
 				    const struct drm_display_mode *mode)
@@ -809,27 +809,27 @@ int intel_get_crtc_scanline(struct intel_crtc *crtc)
 	return position;
 }
 
-static int i915_get_vblank_timestamp(struct drm_device *dev, int pipe,
+static int i915_get_vblank_timestamp(struct drm_device *dev, unsigned int pipe,
 			      int *max_error,
 			      struct timeval *vblank_time,
 			      unsigned flags)
 {
 	struct drm_crtc *crtc;
 
-	if (pipe < 0 || pipe >= INTEL_INFO(dev)->num_pipes) {
-		DRM_ERROR("Invalid crtc %d\n", pipe);
+	if (pipe >= INTEL_INFO(dev)->num_pipes) {
+		DRM_ERROR("Invalid crtc %u\n", pipe);
 		return -EINVAL;
 	}
 
 	/* Get drm_crtc to timestamp: */
 	crtc = intel_get_crtc_for_pipe(dev, pipe);
 	if (crtc == NULL) {
-		DRM_ERROR("Invalid crtc %d\n", pipe);
+		DRM_ERROR("Invalid crtc %u\n", pipe);
 		return -EINVAL;
 	}
 
 	if (!crtc->hwmode.crtc_clock) {
-		DRM_DEBUG_KMS("crtc %d is disabled\n", pipe);
+		DRM_DEBUG_KMS("crtc %u is disabled\n", pipe);
 		return -EBUSY;
 	}
 
@@ -2431,7 +2431,7 @@ void i915_handle_error(struct drm_device *dev, bool wedged,
 /* Called from drm generic code, passed 'crtc' which
  * we use as a pipe index
  */
-static int i915_enable_vblank(struct drm_device *dev, int pipe)
+static int i915_enable_vblank(struct drm_device *dev, unsigned int pipe)
 {
 	struct drm_i915_private *dev_priv = dev->dev_private;
 	unsigned long irqflags;
@@ -2448,7 +2448,7 @@ static int i915_enable_vblank(struct drm_device *dev, int pipe)
 	return 0;
 }
 
-static int ironlake_enable_vblank(struct drm_device *dev, int pipe)
+static int ironlake_enable_vblank(struct drm_device *dev, unsigned int pipe)
 {
 	struct drm_i915_private *dev_priv = dev->dev_private;
 	unsigned long irqflags;
@@ -2462,7 +2462,7 @@ static int ironlake_enable_vblank(struct drm_device *dev, int pipe)
 	return 0;
 }
 
-static int valleyview_enable_vblank(struct drm_device *dev, int pipe)
+static int valleyview_enable_vblank(struct drm_device *dev, unsigned int pipe)
 {
 	struct drm_i915_private *dev_priv = dev->dev_private;
 	unsigned long irqflags;
@@ -2475,7 +2475,7 @@ static int valleyview_enable_vblank(struct drm_device *dev, int pipe)
 	return 0;
 }
 
-static int gen8_enable_vblank(struct drm_device *dev, int pipe)
+static int gen8_enable_vblank(struct drm_device *dev, unsigned int pipe)
 {
 	struct drm_i915_private *dev_priv = dev->dev_private;
 	unsigned long irqflags;
@@ -2491,7 +2491,7 @@ static int gen8_enable_vblank(struct drm_device *dev, int pipe)
 /* Called from drm generic code, passed 'crtc' which
  * we use as a pipe index
  */
-static void i915_disable_vblank(struct drm_device *dev, int pipe)
+static void i915_disable_vblank(struct drm_device *dev, unsigned int pipe)
 {
 	struct drm_i915_private *dev_priv = dev->dev_private;
 	unsigned long irqflags;
@@ -2503,7 +2503,7 @@ static void i915_disable_vblank(struct drm_device *dev, int pipe)
 	spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags);
 }
 
-static void ironlake_disable_vblank(struct drm_device *dev, int pipe)
+static void ironlake_disable_vblank(struct drm_device *dev, unsigned int pipe)
 {
 	struct drm_i915_private *dev_priv = dev->dev_private;
 	unsigned long irqflags;
@@ -2515,7 +2515,7 @@ static void ironlake_disable_vblank(struct drm_device *dev, int pipe)
 	spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags);
 }
 
-static void valleyview_disable_vblank(struct drm_device *dev, int pipe)
+static void valleyview_disable_vblank(struct drm_device *dev, unsigned int pipe)
 {
 	struct drm_i915_private *dev_priv = dev->dev_private;
 	unsigned long irqflags;
@@ -2526,7 +2526,7 @@ static void valleyview_disable_vblank(struct drm_device *dev, int pipe)
 	spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags);
 }
 
-static void gen8_disable_vblank(struct drm_device *dev, int pipe)
+static void gen8_disable_vblank(struct drm_device *dev, unsigned int pipe)
 {
 	struct drm_i915_private *dev_priv = dev->dev_private;
 	unsigned long irqflags;
diff --git a/drivers/gpu/drm/imx/imx-drm-core.c b/drivers/gpu/drm/imx/imx-drm-core.c
index 74f505b0dd02..b880c12c6521 100644
--- a/drivers/gpu/drm/imx/imx-drm-core.c
+++ b/drivers/gpu/drm/imx/imx-drm-core.c
@@ -145,10 +145,10 @@ void imx_drm_handle_vblank(struct imx_drm_crtc *imx_drm_crtc)
 }
 EXPORT_SYMBOL_GPL(imx_drm_handle_vblank);
 
-static int imx_drm_enable_vblank(struct drm_device *drm, int crtc)
+static int imx_drm_enable_vblank(struct drm_device *drm, unsigned int pipe)
 {
 	struct imx_drm_device *imxdrm = drm->dev_private;
-	struct imx_drm_crtc *imx_drm_crtc = imxdrm->crtc[crtc];
+	struct imx_drm_crtc *imx_drm_crtc = imxdrm->crtc[pipe];
 	int ret;
 
 	if (!imx_drm_crtc)
@@ -163,10 +163,10 @@ static int imx_drm_enable_vblank(struct drm_device *drm, int crtc)
 	return ret;
 }
 
-static void imx_drm_disable_vblank(struct drm_device *drm, int crtc)
+static void imx_drm_disable_vblank(struct drm_device *drm, unsigned int pipe)
 {
 	struct imx_drm_device *imxdrm = drm->dev_private;
-	struct imx_drm_crtc *imx_drm_crtc = imxdrm->crtc[crtc];
+	struct imx_drm_crtc *imx_drm_crtc = imxdrm->crtc[pipe];
 
 	if (!imx_drm_crtc)
 		return;
diff --git a/drivers/gpu/drm/mga/mga_drv.h b/drivers/gpu/drm/mga/mga_drv.h
index b4a2014917e5..bb312339e0b0 100644
--- a/drivers/gpu/drm/mga/mga_drv.h
+++ b/drivers/gpu/drm/mga/mga_drv.h
@@ -183,9 +183,9 @@ extern int mga_warp_install_microcode(drm_mga_private_t *dev_priv);
 extern int mga_warp_init(drm_mga_private_t *dev_priv);
 
 				/* mga_irq.c */
-extern int mga_enable_vblank(struct drm_device *dev, int crtc);
-extern void mga_disable_vblank(struct drm_device *dev, int crtc);
-extern u32 mga_get_vblank_counter(struct drm_device *dev, int crtc);
+extern int mga_enable_vblank(struct drm_device *dev, unsigned int pipe);
+extern void mga_disable_vblank(struct drm_device *dev, unsigned int pipe);
+extern u32 mga_get_vblank_counter(struct drm_device *dev, unsigned int pipe);
 extern int mga_driver_fence_wait(struct drm_device *dev, unsigned int *sequence);
 extern int mga_driver_vblank_wait(struct drm_device *dev, unsigned int *sequence);
 extern irqreturn_t mga_driver_irq_handler(int irq, void *arg);
diff --git a/drivers/gpu/drm/mga/mga_irq.c b/drivers/gpu/drm/mga/mga_irq.c
index 1b071b8ff9dc..693ba708cfed 100644
--- a/drivers/gpu/drm/mga/mga_irq.c
+++ b/drivers/gpu/drm/mga/mga_irq.c
@@ -35,12 +35,12 @@
 #include <drm/mga_drm.h>
 #include "mga_drv.h"
 
-u32 mga_get_vblank_counter(struct drm_device *dev, int crtc)
+u32 mga_get_vblank_counter(struct drm_device *dev, unsigned int pipe)
 {
 	const drm_mga_private_t *const dev_priv =
 		(drm_mga_private_t *) dev->dev_private;
 
-	if (crtc != 0)
+	if (pipe != 0)
 		return 0;
 
 	return atomic_read(&dev_priv->vbl_received);
@@ -88,13 +88,13 @@ irqreturn_t mga_driver_irq_handler(int irq, void *arg)
 	return IRQ_NONE;
 }
 
-int mga_enable_vblank(struct drm_device *dev, int crtc)
+int mga_enable_vblank(struct drm_device *dev, unsigned int pipe)
 {
 	drm_mga_private_t *dev_priv = (drm_mga_private_t *) dev->dev_private;
 
-	if (crtc != 0) {
-		DRM_ERROR("tried to enable vblank on non-existent crtc %d\n",
-			  crtc);
+	if (pipe != 0) {
+		DRM_ERROR("tried to enable vblank on non-existent crtc %u\n",
+			  pipe);
 		return 0;
 	}
 
@@ -103,11 +103,11 @@ int mga_enable_vblank(struct drm_device *dev, int crtc)
 }
 
 
-void mga_disable_vblank(struct drm_device *dev, int crtc)
+void mga_disable_vblank(struct drm_device *dev, unsigned int pipe)
 {
-	if (crtc != 0) {
-		DRM_ERROR("tried to disable vblank on non-existent crtc %d\n",
-			  crtc);
+	if (pipe != 0) {
+		DRM_ERROR("tried to disable vblank on non-existent crtc %u\n",
+			  pipe);
 	}
 
 	/* Do *NOT* disable the vertical refresh interrupt.  MGA doesn't have
diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c
index 0339c5d82d37..7e44511d0951 100644
--- a/drivers/gpu/drm/msm/msm_drv.c
+++ b/drivers/gpu/drm/msm/msm_drv.c
@@ -531,24 +531,24 @@ static void msm_irq_uninstall(struct drm_device *dev)
 	kms->funcs->irq_uninstall(kms);
 }
 
-static int msm_enable_vblank(struct drm_device *dev, int crtc_id)
+static int msm_enable_vblank(struct drm_device *dev, unsigned int pipe)
 {
 	struct msm_drm_private *priv = dev->dev_private;
 	struct msm_kms *kms = priv->kms;
 	if (!kms)
 		return -ENXIO;
-	DBG("dev=%p, crtc=%d", dev, crtc_id);
-	return vblank_ctrl_queue_work(priv, crtc_id, true);
+	DBG("dev=%p, crtc=%u", dev, pipe);
+	return vblank_ctrl_queue_work(priv, pipe, true);
 }
 
-static void msm_disable_vblank(struct drm_device *dev, int crtc_id)
+static void msm_disable_vblank(struct drm_device *dev, unsigned int pipe)
 {
 	struct msm_drm_private *priv = dev->dev_private;
 	struct msm_kms *kms = priv->kms;
 	if (!kms)
 		return;
-	DBG("dev=%p, crtc=%d", dev, crtc_id);
-	vblank_ctrl_queue_work(priv, crtc_id, false);
+	DBG("dev=%p, crtc=%u", dev, pipe);
+	vblank_ctrl_queue_work(priv, pipe, false);
 }
 
 /*
diff --git a/drivers/gpu/drm/nouveau/nouveau_display.c b/drivers/gpu/drm/nouveau/nouveau_display.c
index a82c3cbe3127..886079dd9baa 100644
--- a/drivers/gpu/drm/nouveau/nouveau_display.c
+++ b/drivers/gpu/drm/nouveau/nouveau_display.c
@@ -51,12 +51,12 @@ nouveau_display_vblank_handler(struct nvif_notify *notify)
 }
 
 int
-nouveau_display_vblank_enable(struct drm_device *dev, int head)
+nouveau_display_vblank_enable(struct drm_device *dev, unsigned int pipe)
 {
 	struct drm_crtc *crtc;
 	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 		struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
-		if (nv_crtc->index == head) {
+		if (nv_crtc->index == pipe) {
 			nvif_notify_get(&nv_crtc->vblank);
 			return 0;
 		}
@@ -65,12 +65,12 @@ nouveau_display_vblank_enable(struct drm_device *dev, int head)
 }
 
 void
-nouveau_display_vblank_disable(struct drm_device *dev, int head)
+nouveau_display_vblank_disable(struct drm_device *dev, unsigned int pipe)
 {
 	struct drm_crtc *crtc;
 	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 		struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
-		if (nv_crtc->index == head) {
+		if (nv_crtc->index == pipe) {
 			nvif_notify_put(&nv_crtc->vblank);
 			return;
 		}
@@ -132,14 +132,15 @@ nouveau_display_scanoutpos_head(struct drm_crtc *crtc, int *vpos, int *hpos,
 }
 
 int
-nouveau_display_scanoutpos(struct drm_device *dev, int head, unsigned int flags,
-			   int *vpos, int *hpos, ktime_t *stime, ktime_t *etime,
+nouveau_display_scanoutpos(struct drm_device *dev, unsigned int pipe,
+			   unsigned int flags, int *vpos, int *hpos,
+			   ktime_t *stime, ktime_t *etime,
 			   const struct drm_display_mode *mode)
 {
 	struct drm_crtc *crtc;
 
 	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
-		if (nouveau_crtc(crtc)->index == head) {
+		if (nouveau_crtc(crtc)->index == pipe) {
 			return nouveau_display_scanoutpos_head(crtc, vpos, hpos,
 							       stime, etime);
 		}
@@ -149,15 +150,15 @@ nouveau_display_scanoutpos(struct drm_device *dev, int head, unsigned int flags,
 }
 
 int
-nouveau_display_vblstamp(struct drm_device *dev, int head, int *max_error,
-			 struct timeval *time, unsigned flags)
+nouveau_display_vblstamp(struct drm_device *dev, unsigned int pipe,
+			 int *max_error, struct timeval *time, unsigned flags)
 {
 	struct drm_crtc *crtc;
 
 	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
-		if (nouveau_crtc(crtc)->index == head) {
+		if (nouveau_crtc(crtc)->index == pipe) {
 			return drm_calc_vbltimestamp_from_scanoutpos(dev,
-					head, max_error, time, flags,
+					pipe, max_error, time, flags,
 					&crtc->hwmode);
 		}
 	}
diff --git a/drivers/gpu/drm/nouveau/nouveau_display.h b/drivers/gpu/drm/nouveau/nouveau_display.h
index 4182d21538c5..856abe0f070d 100644
--- a/drivers/gpu/drm/nouveau/nouveau_display.h
+++ b/drivers/gpu/drm/nouveau/nouveau_display.h
@@ -65,12 +65,12 @@ int  nouveau_display_init(struct drm_device *dev);
 void nouveau_display_fini(struct drm_device *dev);
 int  nouveau_display_suspend(struct drm_device *dev, bool runtime);
 void nouveau_display_resume(struct drm_device *dev, bool runtime);
-int  nouveau_display_vblank_enable(struct drm_device *, int);
-void nouveau_display_vblank_disable(struct drm_device *, int);
-int  nouveau_display_scanoutpos(struct drm_device *, int, unsigned int,
-				int *, int *, ktime_t *, ktime_t *,
-				const struct drm_display_mode *);
-int  nouveau_display_vblstamp(struct drm_device *, int, int *,
+int  nouveau_display_vblank_enable(struct drm_device *, unsigned int);
+void nouveau_display_vblank_disable(struct drm_device *, unsigned int);
+int  nouveau_display_scanoutpos(struct drm_device *, unsigned int,
+				unsigned int, int *, int *, ktime_t *,
+				ktime_t *, const struct drm_display_mode *);
+int  nouveau_display_vblstamp(struct drm_device *, unsigned int, int *,
 			      struct timeval *, unsigned);
 
 int  nouveau_crtc_page_flip(struct drm_crtc *crtc, struct drm_framebuffer *fb,
diff --git a/drivers/gpu/drm/omapdrm/omap_drv.h b/drivers/gpu/drm/omapdrm/omap_drv.h
index 12081e61d45a..5c367aad8a6e 100644
--- a/drivers/gpu/drm/omapdrm/omap_drv.h
+++ b/drivers/gpu/drm/omapdrm/omap_drv.h
@@ -129,8 +129,8 @@ void omap_gem_describe_objects(struct list_head *list, struct seq_file *m);
 int omap_gem_resume(struct device *dev);
 #endif
 
-int omap_irq_enable_vblank(struct drm_device *dev, int crtc_id);
-void omap_irq_disable_vblank(struct drm_device *dev, int crtc_id);
+int omap_irq_enable_vblank(struct drm_device *dev, unsigned int pipe);
+void omap_irq_disable_vblank(struct drm_device *dev, unsigned int pipe);
 void __omap_irq_register(struct drm_device *dev, struct omap_drm_irq *irq);
 void __omap_irq_unregister(struct drm_device *dev, struct omap_drm_irq *irq);
 void omap_irq_register(struct drm_device *dev, struct omap_drm_irq *irq);
diff --git a/drivers/gpu/drm/omapdrm/omap_irq.c b/drivers/gpu/drm/omapdrm/omap_irq.c
index 249c0330d6ce..60e1e8016708 100644
--- a/drivers/gpu/drm/omapdrm/omap_irq.c
+++ b/drivers/gpu/drm/omapdrm/omap_irq.c
@@ -134,7 +134,7 @@ int omap_irq_wait(struct drm_device *dev, struct omap_irq_wait *wait,
 /**
  * enable_vblank - enable vblank interrupt events
  * @dev: DRM device
- * @crtc: which irq to enable
+ * @pipe: which irq to enable
  *
  * Enable vblank interrupts for @crtc.  If the device doesn't have
  * a hardware vblank counter, this routine should be a no-op, since
@@ -144,13 +144,13 @@ int omap_irq_wait(struct drm_device *dev, struct omap_irq_wait *wait,
  * Zero on success, appropriate errno if the given @crtc's vblank
  * interrupt cannot be enabled.
  */
-int omap_irq_enable_vblank(struct drm_device *dev, int crtc_id)
+int omap_irq_enable_vblank(struct drm_device *dev, unsigned int pipe)
 {
 	struct omap_drm_private *priv = dev->dev_private;
-	struct drm_crtc *crtc = priv->crtcs[crtc_id];
+	struct drm_crtc *crtc = priv->crtcs[pipe];
 	unsigned long flags;
 
-	DBG("dev=%p, crtc=%d", dev, crtc_id);
+	DBG("dev=%p, crtc=%u", dev, pipe);
 
 	spin_lock_irqsave(&list_lock, flags);
 	priv->vblank_mask |= pipe2vbl(crtc);
@@ -163,19 +163,19 @@ int omap_irq_enable_vblank(struct drm_device *dev, int crtc_id)
 /**
  * disable_vblank - disable vblank interrupt events
  * @dev: DRM device
- * @crtc: which irq to enable
+ * @pipe: which irq to enable
  *
  * Disable vblank interrupts for @crtc.  If the device doesn't have
  * a hardware vblank counter, this routine should be a no-op, since
  * interrupts will have to stay on to keep the count accurate.
  */
-void omap_irq_disable_vblank(struct drm_device *dev, int crtc_id)
+void omap_irq_disable_vblank(struct drm_device *dev, unsigned int pipe)
 {
 	struct omap_drm_private *priv = dev->dev_private;
-	struct drm_crtc *crtc = priv->crtcs[crtc_id];
+	struct drm_crtc *crtc = priv->crtcs[pipe];
 	unsigned long flags;
 
-	DBG("dev=%p, crtc=%d", dev, crtc_id);
+	DBG("dev=%p, crtc=%u", dev, pipe);
 
 	spin_lock_irqsave(&list_lock, flags);
 	priv->vblank_mask &= ~pipe2vbl(crtc);
diff --git a/drivers/gpu/drm/qxl/qxl_drv.c b/drivers/gpu/drm/qxl/qxl_drv.c
index 83f6f0b5e9ef..7307b07fe06b 100644
--- a/drivers/gpu/drm/qxl/qxl_drv.c
+++ b/drivers/gpu/drm/qxl/qxl_drv.c
@@ -196,17 +196,18 @@ static int qxl_pm_restore(struct device *dev)
 	return qxl_drm_resume(drm_dev, false);
 }
 
-static u32 qxl_noop_get_vblank_counter(struct drm_device *dev, int crtc)
+static u32 qxl_noop_get_vblank_counter(struct drm_device *dev,
+				       unsigned int pipe)
 {
 	return 0;
 }
 
-static int qxl_noop_enable_vblank(struct drm_device *dev, int crtc)
+static int qxl_noop_enable_vblank(struct drm_device *dev, unsigned int pipe)
 {
 	return 0;
 }
 
-static void qxl_noop_disable_vblank(struct drm_device *dev, int crtc)
+static void qxl_noop_disable_vblank(struct drm_device *dev, unsigned int pipe)
 {
 }
 
diff --git a/drivers/gpu/drm/r128/r128_drv.h b/drivers/gpu/drm/r128/r128_drv.h
index 723e5d6f10a4..09143b840482 100644
--- a/drivers/gpu/drm/r128/r128_drv.h
+++ b/drivers/gpu/drm/r128/r128_drv.h
@@ -154,9 +154,9 @@ extern int r128_wait_ring(drm_r128_private_t *dev_priv, int n);
 extern int r128_do_cce_idle(drm_r128_private_t *dev_priv);
 extern int r128_do_cleanup_cce(struct drm_device *dev);
 
-extern int r128_enable_vblank(struct drm_device *dev, int crtc);
-extern void r128_disable_vblank(struct drm_device *dev, int crtc);
-extern u32 r128_get_vblank_counter(struct drm_device *dev, int crtc);
+extern int r128_enable_vblank(struct drm_device *dev, unsigned int pipe);
+extern void r128_disable_vblank(struct drm_device *dev, unsigned int pipe);
+extern u32 r128_get_vblank_counter(struct drm_device *dev, unsigned int pipe);
 extern irqreturn_t r128_driver_irq_handler(int irq, void *arg);
 extern void r128_driver_irq_preinstall(struct drm_device *dev);
 extern int r128_driver_irq_postinstall(struct drm_device *dev);
diff --git a/drivers/gpu/drm/r128/r128_irq.c b/drivers/gpu/drm/r128/r128_irq.c
index c2ae496babb7..9730f4918944 100644
--- a/drivers/gpu/drm/r128/r128_irq.c
+++ b/drivers/gpu/drm/r128/r128_irq.c
@@ -34,11 +34,11 @@
 #include <drm/r128_drm.h>
 #include "r128_drv.h"
 
-u32 r128_get_vblank_counter(struct drm_device *dev, int crtc)
+u32 r128_get_vblank_counter(struct drm_device *dev, unsigned int pipe)
 {
 	const drm_r128_private_t *dev_priv = dev->dev_private;
 
-	if (crtc != 0)
+	if (pipe != 0)
 		return 0;
 
 	return atomic_read(&dev_priv->vbl_received);
@@ -62,12 +62,12 @@ irqreturn_t r128_driver_irq_handler(int irq, void *arg)
 	return IRQ_NONE;
 }
 
-int r128_enable_vblank(struct drm_device *dev, int crtc)
+int r128_enable_vblank(struct drm_device *dev, unsigned int pipe)
 {
 	drm_r128_private_t *dev_priv = dev->dev_private;
 
-	if (crtc != 0) {
-		DRM_ERROR("%s:  bad crtc %d\n", __func__, crtc);
+	if (pipe != 0) {
+		DRM_ERROR("%s:  bad crtc %u\n", __func__, pipe);
 		return -EINVAL;
 	}
 
@@ -75,10 +75,10 @@ int r128_enable_vblank(struct drm_device *dev, int crtc)
 	return 0;
 }
 
-void r128_disable_vblank(struct drm_device *dev, int crtc)
+void r128_disable_vblank(struct drm_device *dev, unsigned int pipe)
 {
-	if (crtc != 0)
-		DRM_ERROR("%s:  bad crtc %d\n", __func__, crtc);
+	if (pipe != 0)
+		DRM_ERROR("%s:  bad crtc %u\n", __func__, pipe);
 
 	/*
 	 * FIXME: implement proper interrupt disable by using the vblank
diff --git a/drivers/gpu/drm/radeon/radeon_display.c b/drivers/gpu/drm/radeon/radeon_display.c
index 0503af748d99..a58635c5db3d 100644
--- a/drivers/gpu/drm/radeon/radeon_display.c
+++ b/drivers/gpu/drm/radeon/radeon_display.c
@@ -1799,8 +1799,9 @@ bool radeon_crtc_scaling_mode_fixup(struct drm_crtc *crtc,
  * unknown small number of scanlines wrt. real scanout position.
  *
  */
-int radeon_get_crtc_scanoutpos(struct drm_device *dev, int crtc, unsigned int flags,
-			       int *vpos, int *hpos, ktime_t *stime, ktime_t *etime,
+int radeon_get_crtc_scanoutpos(struct drm_device *dev, unsigned int pipe,
+			       unsigned int flags, int *vpos, int *hpos,
+			       ktime_t *stime, ktime_t *etime,
 			       const struct drm_display_mode *mode)
 {
 	u32 stat_crtc = 0, vbl = 0, position = 0;
@@ -1816,42 +1817,42 @@ int radeon_get_crtc_scanoutpos(struct drm_device *dev, int crtc, unsigned int fl
 		*stime = ktime_get();
 
 	if (ASIC_IS_DCE4(rdev)) {
-		if (crtc == 0) {
+		if (pipe == 0) {
 			vbl = RREG32(EVERGREEN_CRTC_V_BLANK_START_END +
 				     EVERGREEN_CRTC0_REGISTER_OFFSET);
 			position = RREG32(EVERGREEN_CRTC_STATUS_POSITION +
 					  EVERGREEN_CRTC0_REGISTER_OFFSET);
 			ret |= DRM_SCANOUTPOS_VALID;
 		}
-		if (crtc == 1) {
+		if (pipe == 1) {
 			vbl = RREG32(EVERGREEN_CRTC_V_BLANK_START_END +
 				     EVERGREEN_CRTC1_REGISTER_OFFSET);
 			position = RREG32(EVERGREEN_CRTC_STATUS_POSITION +
 					  EVERGREEN_CRTC1_REGISTER_OFFSET);
 			ret |= DRM_SCANOUTPOS_VALID;
 		}
-		if (crtc == 2) {
+		if (pipe == 2) {
 			vbl = RREG32(EVERGREEN_CRTC_V_BLANK_START_END +
 				     EVERGREEN_CRTC2_REGISTER_OFFSET);
 			position = RREG32(EVERGREEN_CRTC_STATUS_POSITION +
 					  EVERGREEN_CRTC2_REGISTER_OFFSET);
 			ret |= DRM_SCANOUTPOS_VALID;
 		}
-		if (crtc == 3) {
+		if (pipe == 3) {
 			vbl = RREG32(EVERGREEN_CRTC_V_BLANK_START_END +
 				     EVERGREEN_CRTC3_REGISTER_OFFSET);
 			position = RREG32(EVERGREEN_CRTC_STATUS_POSITION +
 					  EVERGREEN_CRTC3_REGISTER_OFFSET);
 			ret |= DRM_SCANOUTPOS_VALID;
 		}
-		if (crtc == 4) {
+		if (pipe == 4) {
 			vbl = RREG32(EVERGREEN_CRTC_V_BLANK_START_END +
 				     EVERGREEN_CRTC4_REGISTER_OFFSET);
 			position = RREG32(EVERGREEN_CRTC_STATUS_POSITION +
 					  EVERGREEN_CRTC4_REGISTER_OFFSET);
 			ret |= DRM_SCANOUTPOS_VALID;
 		}
-		if (crtc == 5) {
+		if (pipe == 5) {
 			vbl = RREG32(EVERGREEN_CRTC_V_BLANK_START_END +
 				     EVERGREEN_CRTC5_REGISTER_OFFSET);
 			position = RREG32(EVERGREEN_CRTC_STATUS_POSITION +
@@ -1859,19 +1860,19 @@ int radeon_get_crtc_scanoutpos(struct drm_device *dev, int crtc, unsigned int fl
 			ret |= DRM_SCANOUTPOS_VALID;
 		}
 	} else if (ASIC_IS_AVIVO(rdev)) {
-		if (crtc == 0) {
+		if (pipe == 0) {
 			vbl = RREG32(AVIVO_D1CRTC_V_BLANK_START_END);
 			position = RREG32(AVIVO_D1CRTC_STATUS_POSITION);
 			ret |= DRM_SCANOUTPOS_VALID;
 		}
-		if (crtc == 1) {
+		if (pipe == 1) {
 			vbl = RREG32(AVIVO_D2CRTC_V_BLANK_START_END);
 			position = RREG32(AVIVO_D2CRTC_STATUS_POSITION);
 			ret |= DRM_SCANOUTPOS_VALID;
 		}
 	} else {
 		/* Pre-AVIVO: Different encoding of scanout pos and vblank interval. */
-		if (crtc == 0) {
+		if (pipe == 0) {
 			/* Assume vbl_end == 0, get vbl_start from
 			 * upper 16 bits.
 			 */
@@ -1885,7 +1886,7 @@ int radeon_get_crtc_scanoutpos(struct drm_device *dev, int crtc, unsigned int fl
 
 			ret |= DRM_SCANOUTPOS_VALID;
 		}
-		if (crtc == 1) {
+		if (pipe == 1) {
 			vbl = (RREG32(RADEON_CRTC2_V_TOTAL_DISP) &
 				RADEON_CRTC_V_DISP) >> RADEON_CRTC_V_DISP_SHIFT;
 			position = (RREG32(RADEON_CRTC2_VLINE_CRNT_VLINE) >> 16) & RADEON_CRTC_V_TOTAL;
diff --git a/drivers/gpu/drm/radeon/radeon_drv.c b/drivers/gpu/drm/radeon/radeon_drv.c
index e30c1d73b4ca..5b6a6f5b3619 100644
--- a/drivers/gpu/drm/radeon/radeon_drv.c
+++ b/drivers/gpu/drm/radeon/radeon_drv.c
@@ -105,10 +105,10 @@ void radeon_driver_preclose_kms(struct drm_device *dev,
 				struct drm_file *file_priv);
 int radeon_suspend_kms(struct drm_device *dev, bool suspend, bool fbcon);
 int radeon_resume_kms(struct drm_device *dev, bool resume, bool fbcon);
-u32 radeon_get_vblank_counter_kms(struct drm_device *dev, int crtc);
-int radeon_enable_vblank_kms(struct drm_device *dev, int crtc);
-void radeon_disable_vblank_kms(struct drm_device *dev, int crtc);
-int radeon_get_vblank_timestamp_kms(struct drm_device *dev, int crtc,
+u32 radeon_get_vblank_counter_kms(struct drm_device *dev, unsigned int pipe);
+int radeon_enable_vblank_kms(struct drm_device *dev, unsigned int pipe);
+void radeon_disable_vblank_kms(struct drm_device *dev, unsigned int pipe);
+int radeon_get_vblank_timestamp_kms(struct drm_device *dev, unsigned int pipe,
 				    int *max_error,
 				    struct timeval *vblank_time,
 				    unsigned flags);
@@ -124,9 +124,8 @@ void radeon_gem_object_close(struct drm_gem_object *obj,
 struct dma_buf *radeon_gem_prime_export(struct drm_device *dev,
 					struct drm_gem_object *gobj,
 					int flags);
-extern int radeon_get_crtc_scanoutpos(struct drm_device *dev, int crtc,
-				      unsigned int flags,
-				      int *vpos, int *hpos,
+extern int radeon_get_crtc_scanoutpos(struct drm_device *dev, unsigned int crtc,
+				      unsigned int flags, int *vpos, int *hpos,
 				      ktime_t *stime, ktime_t *etime,
 				      const struct drm_display_mode *mode);
 extern bool radeon_is_px(struct drm_device *dev);
diff --git a/drivers/gpu/drm/radeon/radeon_drv.h b/drivers/gpu/drm/radeon/radeon_drv.h
index 46bd3938282c..0caafc7a6e17 100644
--- a/drivers/gpu/drm/radeon/radeon_drv.h
+++ b/drivers/gpu/drm/radeon/radeon_drv.h
@@ -404,9 +404,9 @@ extern int radeon_irq_emit(struct drm_device *dev, void *data, struct drm_file *
 extern int radeon_irq_wait(struct drm_device *dev, void *data, struct drm_file *file_priv);
 
 extern void radeon_do_release(struct drm_device * dev);
-extern u32 radeon_get_vblank_counter(struct drm_device *dev, int crtc);
-extern int radeon_enable_vblank(struct drm_device *dev, int crtc);
-extern void radeon_disable_vblank(struct drm_device *dev, int crtc);
+extern u32 radeon_get_vblank_counter(struct drm_device *dev, unsigned int pipe);
+extern int radeon_enable_vblank(struct drm_device *dev, unsigned int pipe);
+extern void radeon_disable_vblank(struct drm_device *dev, unsigned int pipe);
 extern irqreturn_t radeon_driver_irq_handler(int irq, void *arg);
 extern void radeon_driver_irq_preinstall(struct drm_device * dev);
 extern int radeon_driver_irq_postinstall(struct drm_device *dev);
diff --git a/drivers/gpu/drm/radeon/radeon_irq.c b/drivers/gpu/drm/radeon/radeon_irq.c
index 244b19bab2e7..688afb62f7c4 100644
--- a/drivers/gpu/drm/radeon/radeon_irq.c
+++ b/drivers/gpu/drm/radeon/radeon_irq.c
@@ -62,12 +62,12 @@ static void r500_vbl_irq_set_state(struct drm_device *dev, u32 mask, int state)
 		RADEON_WRITE(R500_DxMODE_INT_MASK, dev_priv->r500_disp_irq_reg);
 }
 
-int radeon_enable_vblank(struct drm_device *dev, int crtc)
+int radeon_enable_vblank(struct drm_device *dev, unsigned int pipe)
 {
 	drm_radeon_private_t *dev_priv = dev->dev_private;
 
 	if ((dev_priv->flags & RADEON_FAMILY_MASK) >= CHIP_RS600) {
-		switch (crtc) {
+		switch (pipe) {
 		case 0:
 			r500_vbl_irq_set_state(dev, R500_D1MODE_INT_MASK, 1);
 			break;
@@ -75,12 +75,12 @@ int radeon_enable_vblank(struct drm_device *dev, int crtc)
 			r500_vbl_irq_set_state(dev, R500_D2MODE_INT_MASK, 1);
 			break;
 		default:
-			DRM_ERROR("tried to enable vblank on non-existent crtc %d\n",
-				  crtc);
+			DRM_ERROR("tried to enable vblank on non-existent crtc %u\n",
+				  pipe);
 			return -EINVAL;
 		}
 	} else {
-		switch (crtc) {
+		switch (pipe) {
 		case 0:
 			radeon_irq_set_state(dev, RADEON_CRTC_VBLANK_MASK, 1);
 			break;
@@ -88,8 +88,8 @@ int radeon_enable_vblank(struct drm_device *dev, int crtc)
 			radeon_irq_set_state(dev, RADEON_CRTC2_VBLANK_MASK, 1);
 			break;
 		default:
-			DRM_ERROR("tried to enable vblank on non-existent crtc %d\n",
-				  crtc);
+			DRM_ERROR("tried to enable vblank on non-existent crtc %u\n",
+				  pipe);
 			return -EINVAL;
 		}
 	}
@@ -97,12 +97,12 @@ int radeon_enable_vblank(struct drm_device *dev, int crtc)
 	return 0;
 }
 
-void radeon_disable_vblank(struct drm_device *dev, int crtc)
+void radeon_disable_vblank(struct drm_device *dev, unsigned int pipe)
 {
 	drm_radeon_private_t *dev_priv = dev->dev_private;
 
 	if ((dev_priv->flags & RADEON_FAMILY_MASK) >= CHIP_RS600) {
-		switch (crtc) {
+		switch (pipe) {
 		case 0:
 			r500_vbl_irq_set_state(dev, R500_D1MODE_INT_MASK, 0);
 			break;
@@ -110,12 +110,12 @@ void radeon_disable_vblank(struct drm_device *dev, int crtc)
 			r500_vbl_irq_set_state(dev, R500_D2MODE_INT_MASK, 0);
 			break;
 		default:
-			DRM_ERROR("tried to enable vblank on non-existent crtc %d\n",
-				  crtc);
+			DRM_ERROR("tried to enable vblank on non-existent crtc %u\n",
+				  pipe);
 			break;
 		}
 	} else {
-		switch (crtc) {
+		switch (pipe) {
 		case 0:
 			radeon_irq_set_state(dev, RADEON_CRTC_VBLANK_MASK, 0);
 			break;
@@ -123,8 +123,8 @@ void radeon_disable_vblank(struct drm_device *dev, int crtc)
 			radeon_irq_set_state(dev, RADEON_CRTC2_VBLANK_MASK, 0);
 			break;
 		default:
-			DRM_ERROR("tried to enable vblank on non-existent crtc %d\n",
-				  crtc);
+			DRM_ERROR("tried to enable vblank on non-existent crtc %u\n",
+				  pipe);
 			break;
 		}
 	}
@@ -255,7 +255,7 @@ static int radeon_wait_irq(struct drm_device * dev, int swi_nr)
 	return ret;
 }
 
-u32 radeon_get_vblank_counter(struct drm_device *dev, int crtc)
+u32 radeon_get_vblank_counter(struct drm_device *dev, unsigned int pipe)
 {
 	drm_radeon_private_t *dev_priv = dev->dev_private;
 
@@ -264,18 +264,18 @@ u32 radeon_get_vblank_counter(struct drm_device *dev, int crtc)
 		return -EINVAL;
 	}
 
-	if (crtc < 0 || crtc > 1) {
-		DRM_ERROR("Invalid crtc %d\n", crtc);
+	if (pipe > 1) {
+		DRM_ERROR("Invalid crtc %u\n", pipe);
 		return -EINVAL;
 	}
 
 	if ((dev_priv->flags & RADEON_FAMILY_MASK) >= CHIP_RS600) {
-		if (crtc == 0)
+		if (pipe == 0)
 			return RADEON_READ(R500_D1CRTC_FRAME_COUNT);
 		else
 			return RADEON_READ(R500_D2CRTC_FRAME_COUNT);
 	} else {
-		if (crtc == 0)
+		if (pipe == 0)
 			return RADEON_READ(RADEON_CRTC_CRNT_FRAME);
 		else
 			return RADEON_READ(RADEON_CRTC2_CRNT_FRAME);
diff --git a/drivers/gpu/drm/radeon/radeon_mode.h b/drivers/gpu/drm/radeon/radeon_mode.h
index 2317d04f8a09..de18f0668bea 100644
--- a/drivers/gpu/drm/radeon/radeon_mode.h
+++ b/drivers/gpu/drm/radeon/radeon_mode.h
@@ -874,9 +874,8 @@ extern int radeon_crtc_cursor_move(struct drm_crtc *crtc,
 				   int x, int y);
 extern void radeon_cursor_reset(struct drm_crtc *crtc);
 
-extern int radeon_get_crtc_scanoutpos(struct drm_device *dev, int crtc,
-				      unsigned int flags,
-				      int *vpos, int *hpos,
+extern int radeon_get_crtc_scanoutpos(struct drm_device *dev, unsigned int pipe,
+				      unsigned int flags, int *vpos, int *hpos,
 				      ktime_t *stime, ktime_t *etime,
 				      const struct drm_display_mode *mode);
 
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_drv.c b/drivers/gpu/drm/rcar-du/rcar_du_drv.c
index 780ca11512ba..bb806c4c2e65 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_drv.c
+++ b/drivers/gpu/drm/rcar-du/rcar_du_drv.c
@@ -221,20 +221,20 @@ static void rcar_du_lastclose(struct drm_device *dev)
 	drm_fbdev_cma_restore_mode(rcdu->fbdev);
 }
 
-static int rcar_du_enable_vblank(struct drm_device *dev, int crtc)
+static int rcar_du_enable_vblank(struct drm_device *dev, unsigned int pipe)
 {
 	struct rcar_du_device *rcdu = dev->dev_private;
 
-	rcar_du_crtc_enable_vblank(&rcdu->crtcs[crtc], true);
+	rcar_du_crtc_enable_vblank(&rcdu->crtcs[pipe], true);
 
 	return 0;
 }
 
-static void rcar_du_disable_vblank(struct drm_device *dev, int crtc)
+static void rcar_du_disable_vblank(struct drm_device *dev, unsigned int pipe)
 {
 	struct rcar_du_device *rcdu = dev->dev_private;
 
-	rcar_du_crtc_enable_vblank(&rcdu->crtcs[crtc], false);
+	rcar_du_crtc_enable_vblank(&rcdu->crtcs[pipe], false);
 }
 
 static const struct file_operations rcar_du_fops = {
diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
index 9a0c2911272a..32c6098a99d1 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
@@ -103,7 +103,8 @@ static struct drm_crtc *rockchip_crtc_from_pipe(struct drm_device *drm,
 	return NULL;
 }
 
-static int rockchip_drm_crtc_enable_vblank(struct drm_device *dev, int pipe)
+static int rockchip_drm_crtc_enable_vblank(struct drm_device *dev,
+					   unsigned int pipe)
 {
 	struct rockchip_drm_private *priv = dev->dev_private;
 	struct drm_crtc *crtc = rockchip_crtc_from_pipe(dev, pipe);
@@ -115,7 +116,8 @@ static int rockchip_drm_crtc_enable_vblank(struct drm_device *dev, int pipe)
 	return 0;
 }
 
-static void rockchip_drm_crtc_disable_vblank(struct drm_device *dev, int pipe)
+static void rockchip_drm_crtc_disable_vblank(struct drm_device *dev,
+					     unsigned int pipe)
 {
 	struct rockchip_drm_private *priv = dev->dev_private;
 	struct drm_crtc *crtc = rockchip_crtc_from_pipe(dev, pipe);
diff --git a/drivers/gpu/drm/shmobile/shmob_drm_drv.c b/drivers/gpu/drm/shmobile/shmob_drm_drv.c
index 666321de7b99..ca2f918a6587 100644
--- a/drivers/gpu/drm/shmobile/shmob_drm_drv.c
+++ b/drivers/gpu/drm/shmobile/shmob_drm_drv.c
@@ -231,7 +231,7 @@ static irqreturn_t shmob_drm_irq(int irq, void *arg)
 	return IRQ_HANDLED;
 }
 
-static int shmob_drm_enable_vblank(struct drm_device *dev, int crtc)
+static int shmob_drm_enable_vblank(struct drm_device *dev, unsigned int pipe)
 {
 	struct shmob_drm_device *sdev = dev->dev_private;
 
@@ -240,7 +240,7 @@ static int shmob_drm_enable_vblank(struct drm_device *dev, int crtc)
 	return 0;
 }
 
-static void shmob_drm_disable_vblank(struct drm_device *dev, int crtc)
+static void shmob_drm_disable_vblank(struct drm_device *dev, unsigned int pipe)
 {
 	struct shmob_drm_device *sdev = dev->dev_private;
 
diff --git a/drivers/gpu/drm/sti/sti_crtc.c b/drivers/gpu/drm/sti/sti_crtc.c
index 018ffc970e96..493c4a3006ad 100644
--- a/drivers/gpu/drm/sti/sti_crtc.c
+++ b/drivers/gpu/drm/sti/sti_crtc.c
@@ -299,7 +299,7 @@ int sti_crtc_vblank_cb(struct notifier_block *nb,
 	return 0;
 }
 
-int sti_crtc_enable_vblank(struct drm_device *dev, int crtc)
+int sti_crtc_enable_vblank(struct drm_device *dev, unsigned int pipe)
 {
 	struct sti_private *dev_priv = dev->dev_private;
 	struct sti_compositor *compo = dev_priv->compo;
@@ -307,9 +307,9 @@ int sti_crtc_enable_vblank(struct drm_device *dev, int crtc)
 
 	DRM_DEBUG_DRIVER("\n");
 
-	if (sti_vtg_register_client(crtc == STI_MIXER_MAIN ?
+	if (sti_vtg_register_client(pipe == STI_MIXER_MAIN ?
 			compo->vtg_main : compo->vtg_aux,
-			vtg_vblank_nb, crtc)) {
+			vtg_vblank_nb, pipe)) {
 		DRM_ERROR("Cannot register VTG notifier\n");
 		return -EINVAL;
 	}
@@ -318,7 +318,7 @@ int sti_crtc_enable_vblank(struct drm_device *dev, int crtc)
 }
 EXPORT_SYMBOL(sti_crtc_enable_vblank);
 
-void sti_crtc_disable_vblank(struct drm_device *drm_dev, int crtc)
+void sti_crtc_disable_vblank(struct drm_device *drm_dev, unsigned int pipe)
 {
 	struct sti_private *priv = drm_dev->dev_private;
 	struct sti_compositor *compo = priv->compo;
@@ -326,14 +326,14 @@ void sti_crtc_disable_vblank(struct drm_device *drm_dev, int crtc)
 
 	DRM_DEBUG_DRIVER("\n");
 
-	if (sti_vtg_unregister_client(crtc == STI_MIXER_MAIN ?
+	if (sti_vtg_unregister_client(pipe == STI_MIXER_MAIN ?
 			compo->vtg_main : compo->vtg_aux, vtg_vblank_nb))
 		DRM_DEBUG_DRIVER("Warning: cannot unregister VTG notifier\n");
 
 	/* free the resources of the pending requests */
-	if (compo->mixer[crtc]->pending_event) {
-		drm_vblank_put(drm_dev, crtc);
-		compo->mixer[crtc]->pending_event = NULL;
+	if (compo->mixer[pipe]->pending_event) {
+		drm_vblank_put(drm_dev, pipe);
+		compo->mixer[pipe]->pending_event = NULL;
 	}
 }
 EXPORT_SYMBOL(sti_crtc_disable_vblank);
diff --git a/drivers/gpu/drm/sti/sti_crtc.h b/drivers/gpu/drm/sti/sti_crtc.h
index 51963e6ddbe7..3f2d89a3634d 100644
--- a/drivers/gpu/drm/sti/sti_crtc.h
+++ b/drivers/gpu/drm/sti/sti_crtc.h
@@ -13,8 +13,8 @@ struct sti_mixer;
 
 int sti_crtc_init(struct drm_device *drm_dev, struct sti_mixer *mixer,
 		  struct drm_plane *primary, struct drm_plane *cursor);
-int sti_crtc_enable_vblank(struct drm_device *dev, int crtc);
-void sti_crtc_disable_vblank(struct drm_device *dev, int crtc);
+int sti_crtc_enable_vblank(struct drm_device *dev, unsigned int pipe);
+void sti_crtc_disable_vblank(struct drm_device *dev, unsigned int pipe);
 int sti_crtc_vblank_cb(struct notifier_block *nb,
 		       unsigned long event, void *data);
 bool sti_crtc_is_main(struct drm_crtc *drm_crtc);
diff --git a/drivers/gpu/drm/tegra/drm.c b/drivers/gpu/drm/tegra/drm.c
index 2486bc24bff6..759e6af91e59 100644
--- a/drivers/gpu/drm/tegra/drm.c
+++ b/drivers/gpu/drm/tegra/drm.c
@@ -822,7 +822,8 @@ static struct drm_crtc *tegra_crtc_from_pipe(struct drm_device *drm,
 	return NULL;
 }
 
-static u32 tegra_drm_get_vblank_counter(struct drm_device *drm, int pipe)
+static u32 tegra_drm_get_vblank_counter(struct drm_device *drm,
+					unsigned int pipe)
 {
 	struct drm_crtc *crtc = tegra_crtc_from_pipe(drm, pipe);
 	struct tegra_dc *dc = to_tegra_dc(crtc);
@@ -833,7 +834,7 @@ static u32 tegra_drm_get_vblank_counter(struct drm_device *drm, int pipe)
 	return tegra_dc_get_vblank_counter(dc);
 }
 
-static int tegra_drm_enable_vblank(struct drm_device *drm, int pipe)
+static int tegra_drm_enable_vblank(struct drm_device *drm, unsigned int pipe)
 {
 	struct drm_crtc *crtc = tegra_crtc_from_pipe(drm, pipe);
 	struct tegra_dc *dc = to_tegra_dc(crtc);
@@ -846,7 +847,7 @@ static int tegra_drm_enable_vblank(struct drm_device *drm, int pipe)
 	return 0;
 }
 
-static void tegra_drm_disable_vblank(struct drm_device *drm, int pipe)
+static void tegra_drm_disable_vblank(struct drm_device *drm, unsigned int pipe)
 {
 	struct drm_crtc *crtc = tegra_crtc_from_pipe(drm, pipe);
 	struct tegra_dc *dc = to_tegra_dc(crtc);
diff --git a/drivers/gpu/drm/tilcdc/tilcdc_drv.c b/drivers/gpu/drm/tilcdc/tilcdc_drv.c
index 0f283a3b932c..a5b8f5d39311 100644
--- a/drivers/gpu/drm/tilcdc/tilcdc_drv.c
+++ b/drivers/gpu/drm/tilcdc/tilcdc_drv.c
@@ -425,13 +425,13 @@ static void enable_vblank(struct drm_device *dev, bool enable)
 		tilcdc_clear(dev, reg, mask);
 }
 
-static int tilcdc_enable_vblank(struct drm_device *dev, int crtc)
+static int tilcdc_enable_vblank(struct drm_device *dev, unsigned int pipe)
 {
 	enable_vblank(dev, true);
 	return 0;
 }
 
-static void tilcdc_disable_vblank(struct drm_device *dev, int crtc)
+static void tilcdc_disable_vblank(struct drm_device *dev, unsigned int pipe)
 {
 	enable_vblank(dev, false);
 }
diff --git a/drivers/gpu/drm/via/via_drv.h b/drivers/gpu/drm/via/via_drv.h
index ef8c500b4a00..644093f5046c 100644
--- a/drivers/gpu/drm/via/via_drv.h
+++ b/drivers/gpu/drm/via/via_drv.h
@@ -136,9 +136,9 @@ extern int via_init_context(struct drm_device *dev, int context);
 extern int via_final_context(struct drm_device *dev, int context);
 
 extern int via_do_cleanup_map(struct drm_device *dev);
-extern u32 via_get_vblank_counter(struct drm_device *dev, int crtc);
-extern int via_enable_vblank(struct drm_device *dev, int crtc);
-extern void via_disable_vblank(struct drm_device *dev, int crtc);
+extern u32 via_get_vblank_counter(struct drm_device *dev, unsigned int pipe);
+extern int via_enable_vblank(struct drm_device *dev, unsigned int pipe);
+extern void via_disable_vblank(struct drm_device *dev, unsigned int pipe);
 
 extern irqreturn_t via_driver_irq_handler(int irq, void *arg);
 extern void via_driver_irq_preinstall(struct drm_device *dev);
diff --git a/drivers/gpu/drm/via/via_irq.c b/drivers/gpu/drm/via/via_irq.c
index 1319433816d3..ea8172c747a2 100644
--- a/drivers/gpu/drm/via/via_irq.c
+++ b/drivers/gpu/drm/via/via_irq.c
@@ -95,10 +95,11 @@ static unsigned time_diff(struct timeval *now, struct timeval *then)
 		1000000 - (then->tv_usec - now->tv_usec);
 }
 
-u32 via_get_vblank_counter(struct drm_device *dev, int crtc)
+u32 via_get_vblank_counter(struct drm_device *dev, unsigned int pipe)
 {
 	drm_via_private_t *dev_priv = dev->dev_private;
-	if (crtc != 0)
+
+	if (pipe != 0)
 		return 0;
 
 	return atomic_read(&dev_priv->vbl_received);
@@ -170,13 +171,13 @@ static __inline__ void viadrv_acknowledge_irqs(drm_via_private_t *dev_priv)
 	}
 }
 
-int via_enable_vblank(struct drm_device *dev, int crtc)
+int via_enable_vblank(struct drm_device *dev, unsigned int pipe)
 {
 	drm_via_private_t *dev_priv = dev->dev_private;
 	u32 status;
 
-	if (crtc != 0) {
-		DRM_ERROR("%s:  bad crtc %d\n", __func__, crtc);
+	if (pipe != 0) {
+		DRM_ERROR("%s:  bad crtc %u\n", __func__, pipe);
 		return -EINVAL;
 	}
 
@@ -189,7 +190,7 @@ int via_enable_vblank(struct drm_device *dev, int crtc)
 	return 0;
 }
 
-void via_disable_vblank(struct drm_device *dev, int crtc)
+void via_disable_vblank(struct drm_device *dev, unsigned int pipe)
 {
 	drm_via_private_t *dev_priv = dev->dev_private;
 	u32 status;
@@ -200,8 +201,8 @@ void via_disable_vblank(struct drm_device *dev, int crtc)
 	VIA_WRITE8(0x83d4, 0x11);
 	VIA_WRITE8(0x83d5, VIA_READ8(0x83d5) & ~0x30);
 
-	if (crtc != 0)
-		DRM_ERROR("%s:  bad crtc %d\n", __func__, crtc);
+	if (pipe != 0)
+		DRM_ERROR("%s:  bad crtc %u\n", __func__, pipe);
 }
 
 static int
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
index f19fd39b43e1..a613bd4851ba 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
@@ -914,9 +914,9 @@ void vmw_kms_idle_workqueues(struct vmw_master *vmaster);
 bool vmw_kms_validate_mode_vram(struct vmw_private *dev_priv,
 				uint32_t pitch,
 				uint32_t height);
-u32 vmw_get_vblank_counter(struct drm_device *dev, int crtc);
-int vmw_enable_vblank(struct drm_device *dev, int crtc);
-void vmw_disable_vblank(struct drm_device *dev, int crtc);
+u32 vmw_get_vblank_counter(struct drm_device *dev, unsigned int pipe);
+int vmw_enable_vblank(struct drm_device *dev, unsigned int pipe);
+void vmw_disable_vblank(struct drm_device *dev, unsigned int pipe);
 int vmw_kms_present(struct vmw_private *dev_priv,
 		    struct drm_file *file_priv,
 		    struct vmw_framebuffer *vfb,
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c b/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c
index 15a6c01cd016..03ffab2a6a9c 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c
@@ -1263,7 +1263,7 @@ bool vmw_kms_validate_mode_vram(struct vmw_private *dev_priv,
 /**
  * Function called by DRM code called with vbl_lock held.
  */
-u32 vmw_get_vblank_counter(struct drm_device *dev, int crtc)
+u32 vmw_get_vblank_counter(struct drm_device *dev, unsigned int pipe)
 {
 	return 0;
 }
@@ -1271,7 +1271,7 @@ u32 vmw_get_vblank_counter(struct drm_device *dev, int crtc)
 /**
  * Function called by DRM code called with vbl_lock held.
  */
-int vmw_enable_vblank(struct drm_device *dev, int crtc)
+int vmw_enable_vblank(struct drm_device *dev, unsigned int pipe)
 {
 	return -ENOSYS;
 }
@@ -1279,7 +1279,7 @@ int vmw_enable_vblank(struct drm_device *dev, int crtc)
 /**
  * Function called by DRM code called with vbl_lock held.
  */
-void vmw_disable_vblank(struct drm_device *dev, int crtc)
+void vmw_disable_vblank(struct drm_device *dev, unsigned int pipe)
 {
 }
 
diff --git a/include/drm/drmP.h b/include/drm/drmP.h
index 967d8a03c0e1..1cb1e842e64d 100644
--- a/include/drm/drmP.h
+++ b/include/drm/drmP.h
@@ -412,7 +412,7 @@ struct drm_driver {
 	/**
 	 * get_vblank_counter - get raw hardware vblank counter
 	 * @dev: DRM device
-	 * @crtc: counter to fetch
+	 * @pipe: counter to fetch
 	 *
 	 * Driver callback for fetching a raw hardware vblank counter for @crtc.
 	 * If a device doesn't have a hardware counter, the driver can simply
@@ -426,12 +426,12 @@ struct drm_driver {
 	 * RETURNS
 	 * Raw vblank counter value.
 	 */
-	u32 (*get_vblank_counter) (struct drm_device *dev, int crtc);
+	u32 (*get_vblank_counter) (struct drm_device *dev, unsigned int pipe);
 
 	/**
 	 * enable_vblank - enable vblank interrupt events
 	 * @dev: DRM device
-	 * @crtc: which irq to enable
+	 * @pipe: which irq to enable
 	 *
 	 * Enable vblank interrupts for @crtc.  If the device doesn't have
 	 * a hardware vblank counter, this routine should be a no-op, since
@@ -441,18 +441,18 @@ struct drm_driver {
 	 * Zero on success, appropriate errno if the given @crtc's vblank
 	 * interrupt cannot be enabled.
 	 */
-	int (*enable_vblank) (struct drm_device *dev, int crtc);
+	int (*enable_vblank) (struct drm_device *dev, unsigned int pipe);
 
 	/**
 	 * disable_vblank - disable vblank interrupt events
 	 * @dev: DRM device
-	 * @crtc: which irq to enable
+	 * @pipe: which irq to enable
 	 *
 	 * Disable vblank interrupts for @crtc.  If the device doesn't have
 	 * a hardware vblank counter, this routine should be a no-op, since
 	 * interrupts will have to stay on to keep the count accurate.
 	 */
-	void (*disable_vblank) (struct drm_device *dev, int crtc);
+	void (*disable_vblank) (struct drm_device *dev, unsigned int pipe);
 
 	/**
 	 * Called by \c drm_device_is_agp.  Typically used to determine if a
@@ -474,7 +474,7 @@ struct drm_driver {
 	 * optional accurate ktime_get timestamp of when position was measured.
 	 *
 	 * \param dev  DRM device.
-	 * \param crtc Id of the crtc to query.
+	 * \param pipe Id of the crtc to query.
 	 * \param flags Flags from the caller (DRM_CALLED_FROM_VBLIRQ or 0).
 	 * \param *vpos Target location for current vertical scanout position.
 	 * \param *hpos Target location for current horizontal scanout position.
@@ -498,9 +498,8 @@ struct drm_driver {
 	 * but unknown small number of scanlines wrt. real scanout position.
 	 *
 	 */
-	int (*get_scanout_position) (struct drm_device *dev, int crtc,
-				     unsigned int flags,
-				     int *vpos, int *hpos,
+	int (*get_scanout_position) (struct drm_device *dev, unsigned int pipe,
+				     unsigned int flags, int *vpos, int *hpos,
 				     ktime_t *stime, ktime_t *etime,
 				     const struct drm_display_mode *mode);
 
@@ -518,7 +517,7 @@ struct drm_driver {
 	 * to the OpenML OML_sync_control extension specification.
 	 *
 	 * \param dev dev DRM device handle.
-	 * \param crtc crtc for which timestamp should be returned.
+	 * \param pipe crtc for which timestamp should be returned.
 	 * \param *max_error Maximum allowable timestamp error in nanoseconds.
 	 *                   Implementation should strive to provide timestamp
 	 *                   with an error of at most *max_error nanoseconds.
@@ -534,7 +533,7 @@ struct drm_driver {
 	 * negative number on failure. A positive status code on success,
 	 * which describes how the vblank_time timestamp was computed.
 	 */
-	int (*get_vblank_timestamp) (struct drm_device *dev, int crtc,
+	int (*get_vblank_timestamp) (struct drm_device *dev, unsigned int pipe,
 				     int *max_error,
 				     struct timeval *vblank_time,
 				     unsigned flags);
@@ -930,7 +929,7 @@ extern int drm_irq_uninstall(struct drm_device *dev);
 extern int drm_vblank_init(struct drm_device *dev, unsigned int num_crtcs);
 extern int drm_wait_vblank(struct drm_device *dev, void *data,
 			   struct drm_file *filp);
-extern u32 drm_vblank_count(struct drm_device *dev, int pipe);
+extern u32 drm_vblank_count(struct drm_device *dev, unsigned int pipe);
 extern u32 drm_crtc_vblank_count(struct drm_crtc *crtc);
 extern u32 drm_vblank_count_and_time(struct drm_device *dev, unsigned int pipe,
 				     struct timeval *vblanktime);