Merge tag 'drm-intel-next-fixes-2017-09-07' of git://anongit.freedesktop.org/git/drm-intel

Pull i916 drm fixes from Rodrigo Vivi:
 "Since Dave is on paternity leave we are sending drm/i915 fixes for
  v4.14-rc1 directly to you as he had asked us to do.

  The most critical ones are the GPU reset fix for gen2-4 and GVT fix
  for a regression that is blocking gvt init to work on your tree.

  The rest is general fixes for patches coming from drm-next"

Acked-by: Dave Airlie <airlied@redhat.com>

* tag 'drm-intel-next-fixes-2017-09-07' of git://anongit.freedesktop.org/git/drm-intel:
  drm/i915: Re-enable GTT following a device reset
  drm/i915: Annotate user relocs with __user
  drm/i915: Silence sparse by using gfp_t
  drm/i915: Add __rcu to radix tree slot pointer
  drm/i915: Fix the missing PPAT cache attributes on CNL
  drm/i915/gvt: Remove one duplicated MMIO
  drm/i915: Fix enum pipe vs. enum transcoder for the PCH transcoder
  drm/i915: Make i2c lock ops static
  drm/i915: Make i9xx_load_ycbcr_conversion_matrix() static
  drm/i915/edp: Increase T12 panel delay to 900 ms to fix DP AUX CH timeouts
  drm/i915: Ignore duplicate VMA stored within the per-object handle LUT
  drm/i915: Skip fence alignemnt check for the CCS plane
  drm/i915: Treat fb->offsets[] as a raw byte offset instead of a linear offset
  drm/i915: Always wake the device to flush the GTT
  drm/i915: Recreate vmapping even when the object is pinned
  drm/i915: Quietly cancel FBC activation if CRTC is turned off before worker

16 files changed, 130 insertions, 85 deletions

diff --git a/drivers/gpu/drm/i915/gvt/handlers.c b/drivers/gpu/drm/i915/gvt/handlers.c
index 3502a59166ff..2294466dd415 100644
--- a/drivers/gpu/drm/i915/gvt/handlers.c
+++ b/drivers/gpu/drm/i915/gvt/handlers.c
@@ -2659,7 +2659,6 @@ static int init_skl_mmio_info(struct intel_gvt *gvt)
 	MMIO_D(HSW_PWR_WELL_CTL_BIOS(SKL_DISP_PW_MISC_IO), D_SKL_PLUS);
 	MMIO_DH(HSW_PWR_WELL_CTL_DRIVER(SKL_DISP_PW_MISC_IO), D_SKL_PLUS, NULL,
 		skl_power_well_ctl_write);
-	MMIO_DH(GEN6_PCODE_MAILBOX, D_SKL_PLUS, NULL, mailbox_write);
 
 	MMIO_D(0xa210, D_SKL_PLUS);
 	MMIO_D(GEN9_MEDIA_PG_IDLE_HYSTERESIS, D_SKL_PLUS);
diff --git a/drivers/gpu/drm/i915/i915_cmd_parser.c b/drivers/gpu/drm/i915/i915_cmd_parser.c
index f0cb22cc0dd6..8ba932b22f7c 100644
--- a/drivers/gpu/drm/i915/i915_cmd_parser.c
+++ b/drivers/gpu/drm/i915/i915_cmd_parser.c
@@ -1073,7 +1073,7 @@ static u32 *copy_batch(struct drm_i915_gem_object *dst_obj,
 		goto unpin_src;
 	}
 
-	dst = i915_gem_object_pin_map(dst_obj, I915_MAP_WB);
+	dst = i915_gem_object_pin_map(dst_obj, I915_MAP_FORCE_WB);
 	if (IS_ERR(dst))
 		goto unpin_dst;
 
diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index 43100229613c..9f45cfeae775 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -1891,9 +1891,15 @@ void i915_reset(struct drm_i915_private *i915, unsigned int flags)
 
 	/*
 	 * Everything depends on having the GTT running, so we need to start
-	 * there.  Fortunately we don't need to do this unless we reset the
-	 * chip at a PCI level.
-	 *
+	 * there.
+	 */
+	ret = i915_ggtt_enable_hw(i915);
+	if (ret) {
+		DRM_ERROR("Failed to re-enable GGTT following reset %d\n", ret);
+		goto error;
+	}
+
+	/*
 	 * Next we need to restore the context, but we don't use those
 	 * yet either...
 	 *
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index bd74641ab7f6..18d9da53282b 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -3479,6 +3479,9 @@ void __i915_gem_object_invalidate(struct drm_i915_gem_object *obj);
 enum i915_map_type {
 	I915_MAP_WB = 0,
 	I915_MAP_WC,
+#define I915_MAP_OVERRIDE BIT(31)
+	I915_MAP_FORCE_WB = I915_MAP_WB | I915_MAP_OVERRIDE,
+	I915_MAP_FORCE_WC = I915_MAP_WC | I915_MAP_OVERRIDE,
 };
 
 /**
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 287c6ead95b3..57317715977f 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -695,12 +695,11 @@ flush_write_domain(struct drm_i915_gem_object *obj, unsigned int flush_domains)
 	switch (obj->base.write_domain) {
 	case I915_GEM_DOMAIN_GTT:
 		if (INTEL_GEN(dev_priv) >= 6 && !HAS_LLC(dev_priv)) {
-			if (intel_runtime_pm_get_if_in_use(dev_priv)) {
-				spin_lock_irq(&dev_priv->uncore.lock);
-				POSTING_READ_FW(RING_ACTHD(dev_priv->engine[RCS]->mmio_base));
-				spin_unlock_irq(&dev_priv->uncore.lock);
-				intel_runtime_pm_put(dev_priv);
-			}
+			intel_runtime_pm_get(dev_priv);
+			spin_lock_irq(&dev_priv->uncore.lock);
+			POSTING_READ_FW(RING_ACTHD(dev_priv->engine[RCS]->mmio_base));
+			spin_unlock_irq(&dev_priv->uncore.lock);
+			intel_runtime_pm_put(dev_priv);
 		}
 
 		intel_fb_obj_flush(obj,
@@ -2213,7 +2212,7 @@ i915_gem_object_put_pages_gtt(struct drm_i915_gem_object *obj,
 static void __i915_gem_object_reset_page_iter(struct drm_i915_gem_object *obj)
 {
 	struct radix_tree_iter iter;
-	void **slot;
+	void __rcu **slot;
 
 	radix_tree_for_each_slot(slot, &obj->mm.get_page.radix, &iter, 0)
 		radix_tree_delete(&obj->mm.get_page.radix, iter.index);
@@ -2553,6 +2552,9 @@ static void *i915_gem_object_map(const struct drm_i915_gem_object *obj,
 	GEM_BUG_ON(i != n_pages);
 
 	switch (type) {
+	default:
+		MISSING_CASE(type);
+		/* fallthrough to use PAGE_KERNEL anyway */
 	case I915_MAP_WB:
 		pgprot = PAGE_KERNEL;
 		break;
@@ -2583,7 +2585,9 @@ void *i915_gem_object_pin_map(struct drm_i915_gem_object *obj,
 	if (ret)
 		return ERR_PTR(ret);
 
-	pinned = true;
+	pinned = !(type & I915_MAP_OVERRIDE);
+	type &= ~I915_MAP_OVERRIDE;
+
 	if (!atomic_inc_not_zero(&obj->mm.pages_pin_count)) {
 		if (unlikely(IS_ERR_OR_NULL(obj->mm.pages))) {
 			ret = ____i915_gem_object_get_pages(obj);
@@ -3258,7 +3262,13 @@ void i915_gem_close_object(struct drm_gem_object *gem, struct drm_file *file)
 
 		vma = radix_tree_delete(&ctx->handles_vma, lut->handle);
 
-		if (!i915_vma_is_ggtt(vma))
+		GEM_BUG_ON(vma->obj != obj);
+
+		/* We allow the process to have multiple handles to the same
+		 * vma, in the same fd namespace, by virtue of flink/open.
+		 */
+		GEM_BUG_ON(!vma->open_count);
+		if (!--vma->open_count && !i915_vma_is_ggtt(vma))
 			i915_vma_close(vma);
 
 		list_del(&lut->obj_link);
diff --git a/drivers/gpu/drm/i915/i915_gem_execbuffer.c b/drivers/gpu/drm/i915/i915_gem_execbuffer.c
index 4c2016237d61..50d5e24f91a9 100644
--- a/drivers/gpu/drm/i915/i915_gem_execbuffer.c
+++ b/drivers/gpu/drm/i915/i915_gem_execbuffer.c
@@ -285,7 +285,7 @@ static int eb_create(struct i915_execbuffer *eb)
 		 * direct lookup.
 		 */
 		do {
-			unsigned int flags;
+			gfp_t flags;
 
 			/* While we can still reduce the allocation size, don't
 			 * raise a warning and allow the allocation to fail.
@@ -720,6 +720,7 @@ static int eb_lookup_vmas(struct i915_execbuffer *eb)
 			goto err_obj;
 		}
 
+		vma->open_count++;
 		list_add(&lut->obj_link, &obj->lut_list);
 		list_add(&lut->ctx_link, &eb->ctx->handles_list);
 		lut->ctx = eb->ctx;
@@ -1070,7 +1071,9 @@ static int __reloc_gpu_alloc(struct i915_execbuffer *eb,
 		return PTR_ERR(obj);
 
 	cmd = i915_gem_object_pin_map(obj,
-				      cache->has_llc ? I915_MAP_WB : I915_MAP_WC);
+				      cache->has_llc ?
+				      I915_MAP_FORCE_WB :
+				      I915_MAP_FORCE_WC);
 	i915_gem_object_unpin_pages(obj);
 	if (IS_ERR(cmd))
 		return PTR_ERR(cmd);
@@ -1526,7 +1529,7 @@ static int eb_copy_relocations(const struct i915_execbuffer *eb)
 				min_t(u64, BIT_ULL(31), size - copied);
 
 			if (__copy_from_user((char *)relocs + copied,
-					     (char *)urelocs + copied,
+					     (char __user *)urelocs + copied,
 					     len)) {
 				kvfree(relocs);
 				err = -EFAULT;
diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c
index 6c6b8e8592aa..0d5a988b3867 100644
--- a/drivers/gpu/drm/i915/i915_gem_gtt.c
+++ b/drivers/gpu/drm/i915/i915_gem_gtt.c
@@ -2754,10 +2754,10 @@ static void cnl_setup_private_ppat(struct drm_i915_private *dev_priv)
 	I915_WRITE(GEN10_PAT_INDEX(1), GEN8_PPAT_WC | GEN8_PPAT_LLCELLC);
 	I915_WRITE(GEN10_PAT_INDEX(2), GEN8_PPAT_WT | GEN8_PPAT_LLCELLC);
 	I915_WRITE(GEN10_PAT_INDEX(3), GEN8_PPAT_UC);
-	I915_WRITE(GEN10_PAT_INDEX(4), GEN8_PPAT_LLCELLC | GEN8_PPAT_AGE(0));
-	I915_WRITE(GEN10_PAT_INDEX(5), GEN8_PPAT_LLCELLC | GEN8_PPAT_AGE(1));
-	I915_WRITE(GEN10_PAT_INDEX(6), GEN8_PPAT_LLCELLC | GEN8_PPAT_AGE(2));
-	I915_WRITE(GEN10_PAT_INDEX(7), GEN8_PPAT_LLCELLC | GEN8_PPAT_AGE(3));
+	I915_WRITE(GEN10_PAT_INDEX(4), GEN8_PPAT_WB | GEN8_PPAT_LLCELLC | GEN8_PPAT_AGE(0));
+	I915_WRITE(GEN10_PAT_INDEX(5), GEN8_PPAT_WB | GEN8_PPAT_LLCELLC | GEN8_PPAT_AGE(1));
+	I915_WRITE(GEN10_PAT_INDEX(6), GEN8_PPAT_WB | GEN8_PPAT_LLCELLC | GEN8_PPAT_AGE(2));
+	I915_WRITE(GEN10_PAT_INDEX(7), GEN8_PPAT_WB | GEN8_PPAT_LLCELLC | GEN8_PPAT_AGE(3));
 }
 
 /* The GGTT and PPGTT need a private PPAT setup in order to handle cacheability
diff --git a/drivers/gpu/drm/i915/i915_trace.h b/drivers/gpu/drm/i915/i915_trace.h
index b24a83d43559..6fd5c57e21f6 100644
--- a/drivers/gpu/drm/i915/i915_trace.h
+++ b/drivers/gpu/drm/i915/i915_trace.h
@@ -38,7 +38,7 @@ TRACE_EVENT(intel_cpu_fifo_underrun,
 );
 
 TRACE_EVENT(intel_pch_fifo_underrun,
-	    TP_PROTO(struct drm_i915_private *dev_priv, enum transcoder pch_transcoder),
+	    TP_PROTO(struct drm_i915_private *dev_priv, enum pipe pch_transcoder),
 	    TP_ARGS(dev_priv, pch_transcoder),
 
 	    TP_STRUCT__entry(
@@ -48,7 +48,7 @@ TRACE_EVENT(intel_pch_fifo_underrun,
 			     ),
 
 	    TP_fast_assign(
-			   enum pipe pipe = (enum pipe)pch_transcoder;
+			   enum pipe pipe = pch_transcoder;
 			   __entry->pipe = pipe;
 			   __entry->frame = dev_priv->drm.driver->get_vblank_counter(&dev_priv->drm, pipe);
 			   __entry->scanline = intel_get_crtc_scanline(intel_get_crtc_for_pipe(dev_priv, pipe));
diff --git a/drivers/gpu/drm/i915/i915_vma.h b/drivers/gpu/drm/i915/i915_vma.h
index 1fd61e88cfd0..e811067c7724 100644
--- a/drivers/gpu/drm/i915/i915_vma.h
+++ b/drivers/gpu/drm/i915/i915_vma.h
@@ -59,6 +59,12 @@ struct i915_vma {
 	u32 fence_size;
 	u32 fence_alignment;
 
+	/**
+	 * Count of the number of times this vma has been opened by different
+	 * handles (but same file) for execbuf, i.e. the number of aliases
+	 * that exist in the ctx->handle_vmas LUT for this vma.
+	 */
+	unsigned int open_count;
 	unsigned int flags;
 	/**
 	 * How many users have pinned this object in GTT space. The following
diff --git a/drivers/gpu/drm/i915/intel_color.c b/drivers/gpu/drm/i915/intel_color.c
index 8e4e829682b9..ff9ecd211abb 100644
--- a/drivers/gpu/drm/i915/intel_color.c
+++ b/drivers/gpu/drm/i915/intel_color.c
@@ -107,7 +107,7 @@ static void ctm_mult_by_limited(uint64_t *result, int64_t *input)
 	}
 }
 
-void i9xx_load_ycbcr_conversion_matrix(struct intel_crtc *intel_crtc)
+static void i9xx_load_ycbcr_conversion_matrix(struct intel_crtc *intel_crtc)
 {
 	int pipe = intel_crtc->pipe;
 	struct drm_i915_private *dev_priv = to_i915(intel_crtc->base.dev);
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 0e93ec201fe3..f17275519484 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -2288,17 +2288,13 @@ void intel_add_fb_offsets(int *x, int *y,
 	}
 }
 
-/*
- * Input tile dimensions and pitch must already be
- * rotated to match x and y, and in pixel units.
- */
-static u32 _intel_adjust_tile_offset(int *x, int *y,
-				     unsigned int tile_width,
-				     unsigned int tile_height,
-				     unsigned int tile_size,
-				     unsigned int pitch_tiles,
-				     u32 old_offset,
-				     u32 new_offset)
+static u32 __intel_adjust_tile_offset(int *x, int *y,
+				      unsigned int tile_width,
+				      unsigned int tile_height,
+				      unsigned int tile_size,
+				      unsigned int pitch_tiles,
+				      u32 old_offset,
+				      u32 new_offset)
 {
 	unsigned int pitch_pixels = pitch_tiles * tile_width;
 	unsigned int tiles;
@@ -2319,18 +2315,13 @@ static u32 _intel_adjust_tile_offset(int *x, int *y,
 	return new_offset;
 }
 
-/*
- * Adjust the tile offset by moving the difference into
- * the x/y offsets.
- */
-static u32 intel_adjust_tile_offset(int *x, int *y,
-				    const struct intel_plane_state *state, int plane,
-				    u32 old_offset, u32 new_offset)
+static u32 _intel_adjust_tile_offset(int *x, int *y,
+				     const struct drm_framebuffer *fb, int plane,
+				     unsigned int rotation,
+				     u32 old_offset, u32 new_offset)
 {
-	const struct drm_i915_private *dev_priv = to_i915(state->base.plane->dev);
-	const struct drm_framebuffer *fb = state->base.fb;
+	const struct drm_i915_private *dev_priv = to_i915(fb->dev);
 	unsigned int cpp = fb->format->cpp[plane];
-	unsigned int rotation = state->base.rotation;
 	unsigned int pitch = intel_fb_pitch(fb, plane, rotation);
 
 	WARN_ON(new_offset > old_offset);
@@ -2349,9 +2340,9 @@ static u32 intel_adjust_tile_offset(int *x, int *y,
 			pitch_tiles = pitch / (tile_width * cpp);
 		}
 
-		_intel_adjust_tile_offset(x, y, tile_width, tile_height,
-					  tile_size, pitch_tiles,
-					  old_offset, new_offset);
+		__intel_adjust_tile_offset(x, y, tile_width, tile_height,
+					   tile_size, pitch_tiles,
+					   old_offset, new_offset);
 	} else {
 		old_offset += *y * pitch + *x * cpp;
 
@@ -2363,6 +2354,19 @@ static u32 intel_adjust_tile_offset(int *x, int *y,
 }
 
 /*
+ * Adjust the tile offset by moving the difference into
+ * the x/y offsets.
+ */
+static u32 intel_adjust_tile_offset(int *x, int *y,
+				    const struct intel_plane_state *state, int plane,
+				    u32 old_offset, u32 new_offset)
+{
+	return _intel_adjust_tile_offset(x, y, state->base.fb, plane,
+					 state->base.rotation,
+					 old_offset, new_offset);
+}
+
+/*
  * Computes the linear offset to the base tile and adjusts
  * x, y. bytes per pixel is assumed to be a power-of-two.
  *
@@ -2413,9 +2417,9 @@ static u32 _intel_compute_tile_offset(const struct drm_i915_private *dev_priv,
 		offset = (tile_rows * pitch_tiles + tiles) * tile_size;
 		offset_aligned = offset & ~alignment;
 
-		_intel_adjust_tile_offset(x, y, tile_width, tile_height,
-					  tile_size, pitch_tiles,
-					  offset, offset_aligned);
+		__intel_adjust_tile_offset(x, y, tile_width, tile_height,
+					   tile_size, pitch_tiles,
+					   offset, offset_aligned);
 	} else {
 		offset = *y * pitch + *x * cpp;
 		offset_aligned = offset & ~alignment;
@@ -2447,16 +2451,24 @@ u32 intel_compute_tile_offset(int *x, int *y,
 					  rotation, alignment);
 }
 
-/* Convert the fb->offset[] linear offset into x/y offsets */
-static void intel_fb_offset_to_xy(int *x, int *y,
-				  const struct drm_framebuffer *fb, int plane)
+/* Convert the fb->offset[] into x/y offsets */
+static int intel_fb_offset_to_xy(int *x, int *y,
+				 const struct drm_framebuffer *fb, int plane)
 {
-	unsigned int cpp = fb->format->cpp[plane];
-	unsigned int pitch = fb->pitches[plane];
-	u32 linear_offset = fb->offsets[plane];
+	struct drm_i915_private *dev_priv = to_i915(fb->dev);
+
+	if (fb->modifier != DRM_FORMAT_MOD_LINEAR &&
+	    fb->offsets[plane] % intel_tile_size(dev_priv))
+		return -EINVAL;
 
-	*y = linear_offset / pitch;
-	*x = linear_offset % pitch / cpp;
+	*x = 0;
+	*y = 0;
+
+	_intel_adjust_tile_offset(x, y,
+				  fb, plane, DRM_MODE_ROTATE_0,
+				  fb->offsets[plane], 0);
+
+	return 0;
 }
 
 static unsigned int intel_fb_modifier_to_tiling(uint64_t fb_modifier)
@@ -2523,12 +2535,18 @@ intel_fill_fb_info(struct drm_i915_private *dev_priv,
 		unsigned int cpp, size;
 		u32 offset;
 		int x, y;
+		int ret;
 
 		cpp = fb->format->cpp[i];
 		width = drm_framebuffer_plane_width(fb->width, fb, i);
 		height = drm_framebuffer_plane_height(fb->height, fb, i);
 
-		intel_fb_offset_to_xy(&x, &y, fb, i);
+		ret = intel_fb_offset_to_xy(&x, &y, fb, i);
+		if (ret) {
+			DRM_DEBUG_KMS("bad fb plane %d offset: 0x%x\n",
+				      i, fb->offsets[i]);
+			return ret;
+		}
 
 		if ((fb->modifier == I915_FORMAT_MOD_Y_TILED_CCS ||
 		     fb->modifier == I915_FORMAT_MOD_Yf_TILED_CCS) && i == 1) {
@@ -2539,11 +2557,13 @@ intel_fill_fb_info(struct drm_i915_private *dev_priv,
 			int ccs_x, ccs_y;
 
 			intel_tile_dims(fb, i, &tile_width, &tile_height);
+			tile_width *= hsub;
+			tile_height *= vsub;
 
-			ccs_x = (x * hsub) % (tile_width * hsub);
-			ccs_y = (y * vsub) % (tile_height * vsub);
-			main_x = intel_fb->normal[0].x % (tile_width * hsub);
-			main_y = intel_fb->normal[0].y % (tile_height * vsub);
+			ccs_x = (x * hsub) % tile_width;
+			ccs_y = (y * vsub) % tile_height;
+			main_x = intel_fb->normal[0].x % tile_width;
+			main_y = intel_fb->normal[0].y % tile_height;
 
 			/*
 			 * CCS doesn't have its own x/y offset register, so the intra CCS tile
@@ -2569,7 +2589,7 @@ intel_fill_fb_info(struct drm_i915_private *dev_priv,
 		 * fb layout agrees with the fence layout. We already check that the
 		 * fb stride matches the fence stride elsewhere.
 		 */
-		if (i915_gem_object_is_tiled(intel_fb->obj) &&
+		if (i == 0 && i915_gem_object_is_tiled(intel_fb->obj) &&
 		    (x + width) * cpp > fb->pitches[i]) {
 			DRM_DEBUG_KMS("bad fb plane %d offset: 0x%x\n",
 				      i, fb->offsets[i]);
@@ -2632,10 +2652,10 @@ intel_fill_fb_info(struct drm_i915_private *dev_priv,
 			 * We only keep the x/y offsets, so push all of the
 			 * gtt offset into the x/y offsets.
 			 */
-			_intel_adjust_tile_offset(&x, &y,
-						  tile_width, tile_height,
-						  tile_size, pitch_tiles,
-						  gtt_offset_rotated * tile_size, 0);
+			__intel_adjust_tile_offset(&x, &y,
+						   tile_width, tile_height,
+						   tile_size, pitch_tiles,
+						   gtt_offset_rotated * tile_size, 0);
 
 			gtt_offset_rotated += rot_info->plane[i].width * rot_info->plane[i].height;
 
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 4fd4853b2250..64134947c0aa 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -5273,7 +5273,7 @@ intel_dp_init_panel_power_sequencer(struct drm_device *dev,
 	 * seems sufficient to avoid this problem.
 	 */
 	if (dev_priv->quirks & QUIRK_INCREASE_T12_DELAY) {
-		vbt.t11_t12 = max_t(u16, vbt.t11_t12, 800 * 10);
+		vbt.t11_t12 = max_t(u16, vbt.t11_t12, 900 * 10);
 		DRM_DEBUG_KMS("Increasing T12 panel delay as per the quirk to %d\n",
 			      vbt.t11_t12);
 	}
diff --git a/drivers/gpu/drm/i915/intel_fbc.c b/drivers/gpu/drm/i915/intel_fbc.c
index 3fca9fa39a8e..8c8ead2276e0 100644
--- a/drivers/gpu/drm/i915/intel_fbc.c
+++ b/drivers/gpu/drm/i915/intel_fbc.c
@@ -406,9 +406,7 @@ static void intel_fbc_work_fn(struct work_struct *__work)
 	struct drm_vblank_crtc *vblank = &dev_priv->drm.vblank[crtc->pipe];
 
 	if (drm_crtc_vblank_get(&crtc->base)) {
-		DRM_ERROR("vblank not available for FBC on pipe %c\n",
-			  pipe_name(crtc->pipe));
-
+		/* CRTC is now off, leave FBC deactivated */
 		mutex_lock(&fbc->lock);
 		work->scheduled = false;
 		mutex_unlock(&fbc->lock);
diff --git a/drivers/gpu/drm/i915/intel_fifo_underrun.c b/drivers/gpu/drm/i915/intel_fifo_underrun.c
index 5a7cca32c0fa..04689600e337 100644
--- a/drivers/gpu/drm/i915/intel_fifo_underrun.c
+++ b/drivers/gpu/drm/i915/intel_fifo_underrun.c
@@ -187,11 +187,11 @@ static void broadwell_set_fifo_underrun_reporting(struct drm_device *dev,
 }
 
 static void ibx_set_fifo_underrun_reporting(struct drm_device *dev,
-					    enum transcoder pch_transcoder,
+					    enum pipe pch_transcoder,
 					    bool enable)
 {
 	struct drm_i915_private *dev_priv = to_i915(dev);
-	uint32_t bit = (pch_transcoder == TRANSCODER_A) ?
+	uint32_t bit = (pch_transcoder == PIPE_A) ?
 		       SDE_TRANSA_FIFO_UNDER : SDE_TRANSB_FIFO_UNDER;
 
 	if (enable)
@@ -203,7 +203,7 @@ static void ibx_set_fifo_underrun_reporting(struct drm_device *dev,
 static void cpt_check_pch_fifo_underruns(struct intel_crtc *crtc)
 {
 	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
-	enum transcoder pch_transcoder = (enum transcoder) crtc->pipe;
+	enum pipe pch_transcoder = crtc->pipe;
 	uint32_t serr_int = I915_READ(SERR_INT);
 
 	lockdep_assert_held(&dev_priv->irq_lock);
@@ -215,12 +215,12 @@ static void cpt_check_pch_fifo_underruns(struct intel_crtc *crtc)
 	POSTING_READ(SERR_INT);
 
 	trace_intel_pch_fifo_underrun(dev_priv, pch_transcoder);
-	DRM_ERROR("pch fifo underrun on pch transcoder %s\n",
-		  transcoder_name(pch_transcoder));
+	DRM_ERROR("pch fifo underrun on pch transcoder %c\n",
+		  pipe_name(pch_transcoder));
 }
 
 static void cpt_set_fifo_underrun_reporting(struct drm_device *dev,
-					    enum transcoder pch_transcoder,
+					    enum pipe pch_transcoder,
 					    bool enable, bool old)
 {
 	struct drm_i915_private *dev_priv = to_i915(dev);
@@ -238,8 +238,8 @@ static void cpt_set_fifo_underrun_reporting(struct drm_device *dev,
 
 		if (old && I915_READ(SERR_INT) &
 		    SERR_INT_TRANS_FIFO_UNDERRUN(pch_transcoder)) {
-			DRM_ERROR("uncleared pch fifo underrun on pch transcoder %s\n",
-				  transcoder_name(pch_transcoder));
+			DRM_ERROR("uncleared pch fifo underrun on pch transcoder %c\n",
+				  pipe_name(pch_transcoder));
 		}
 	}
 }
@@ -395,8 +395,8 @@ void intel_pch_fifo_underrun_irq_handler(struct drm_i915_private *dev_priv,
 	if (intel_set_pch_fifo_underrun_reporting(dev_priv, pch_transcoder,
 						  false)) {
 		trace_intel_pch_fifo_underrun(dev_priv, pch_transcoder);
-		DRM_ERROR("PCH transcoder %s FIFO underrun\n",
-			  transcoder_name(pch_transcoder));
+		DRM_ERROR("PCH transcoder %c FIFO underrun\n",
+			  pipe_name(pch_transcoder));
 	}
 }
 
diff --git a/drivers/gpu/drm/i915/intel_i2c.c b/drivers/gpu/drm/i915/intel_i2c.c
index 6698826954e1..eb5827110d8f 100644
--- a/drivers/gpu/drm/i915/intel_i2c.c
+++ b/drivers/gpu/drm/i915/intel_i2c.c
@@ -649,7 +649,7 @@ static void gmbus_unlock_bus(struct i2c_adapter *adapter,
 	mutex_unlock(&dev_priv->gmbus_mutex);
 }
 
-const struct i2c_lock_operations gmbus_lock_ops = {
+static const struct i2c_lock_operations gmbus_lock_ops = {
 	.lock_bus =    gmbus_lock_bus,
 	.trylock_bus = gmbus_trylock_bus,
 	.unlock_bus =  gmbus_unlock_bus,
diff --git a/drivers/gpu/drm/i915/intel_sdvo.c b/drivers/gpu/drm/i915/intel_sdvo.c
index 3dc38c2ef4c3..29a3b0f5bec7 100644
--- a/drivers/gpu/drm/i915/intel_sdvo.c
+++ b/drivers/gpu/drm/i915/intel_sdvo.c
@@ -2980,7 +2980,7 @@ static void proxy_unlock_bus(struct i2c_adapter *adapter,
 	sdvo->i2c->lock_ops->unlock_bus(sdvo->i2c, flags);
 }
 
-const struct i2c_lock_operations proxy_lock_ops = {
+static const struct i2c_lock_operations proxy_lock_ops = {
 	.lock_bus =    proxy_lock_bus,
 	.trylock_bus = proxy_trylock_bus,
 	.unlock_bus =  proxy_unlock_bus,