Merge tag 'drm-fixes-2019-03-29' of git://anongit.freedesktop.org/drm/drm

Pull drm fixes from Dave Airlie:
 "Weekly fixes roundup, nothing two serious, some usb device regressions
  are fixed, and i915 GVT has a bigger fix but otherwise not really much
  happening here.

  core:
   - fb bpp check regression fix
   - release/unplug fix
   - use after free fixes

  i915:
   - fix mmap range checks
   - fix gvt ppgtt mm LRU list access races
   - fix selftest error pointer check
   - fix a macro definition (pre-emptive for potential further backports)
   - fix one AML SKU ULX status

  amdgpu:
   - one variable refresh rate fix

  udl:
   - fix EDID reading

  tegra:
   - build/warning fixes

  meson:
   - cleanup path fixes
   - TMDS clock filter fix

  rockchip:
   - NV12 buffers and scalar fix"

* tag 'drm-fixes-2019-03-29' of git://anongit.freedesktop.org/drm/drm: (22 commits)
  drm/i915/icl: Fix VEBOX mismatch BUG_ON()
  drm/i915/selftests: Fix an IS_ERR() vs NULL check
  drm/i915: Mark AML 0x87CA as ULX
  drm/meson: fix TMDS clock filtering for DMT monitors
  drm/meson: Uninstall IRQ handler
  drm/meson: Fix invalid pointer in meson_drv_unbind()
  drm/udl: Refactor edid retrieving in UDL driver (v2)
  drm: Fix drm_release() and device unplug
  drm/fb: avoid setting 0 depth.
  drm/tegra: vic: Fix implicit function declaration warning
  drm/tegra: hub: Fix dereference before check
  drm/i915/icl: Fix the TRANS_DDI_FUNC_CTL2 bitfield macro
  drm/amd/display: Only allow VRR when vrefresh is within supported range
  drm/rockchip: vop: reset scale mode when win is disabled
  drm/vkms: fix use-after-free when drm_gem_handle_create() fails
  drm/vgem: fix use-after-free when drm_gem_handle_create() fails
  drm/i915/gvt: Add mutual lock for ppgtt mm LRU list
  drm/i915/gvt: Only assign ppgtt root at dispatch time
  drm/i915/gvt: Don't submit request for error workload dispatch
  drm/i915/gvt: stop scheduling workload when vgpu is inactive
  ...

20 files changed, 89 insertions, 103 deletions

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index fb27783d7a54..81127f7d6ed1 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -5429,9 +5429,11 @@ static void get_freesync_config_for_crtc(
 	struct amdgpu_dm_connector *aconnector =
 			to_amdgpu_dm_connector(new_con_state->base.connector);
 	struct drm_display_mode *mode = &new_crtc_state->base.mode;
+	int vrefresh = drm_mode_vrefresh(mode);
 
 	new_crtc_state->vrr_supported = new_con_state->freesync_capable &&
-		aconnector->min_vfreq <= drm_mode_vrefresh(mode);
+					vrefresh >= aconnector->min_vfreq &&
+					vrefresh <= aconnector->max_vfreq;
 
 	if (new_crtc_state->vrr_supported) {
 		new_crtc_state->stream->ignore_msa_timing_param = true;
diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c
index 381581b01d48..05bbc2b622fc 100644
--- a/drivers/gpu/drm/drm_drv.c
+++ b/drivers/gpu/drm/drm_drv.c
@@ -376,11 +376,7 @@ void drm_dev_unplug(struct drm_device *dev)
 	synchronize_srcu(&drm_unplug_srcu);
 
 	drm_dev_unregister(dev);
-
-	mutex_lock(&drm_global_mutex);
-	if (dev->open_count == 0)
-		drm_dev_put(dev);
-	mutex_unlock(&drm_global_mutex);
+	drm_dev_put(dev);
 }
 EXPORT_SYMBOL(drm_dev_unplug);
 
diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c
index 0e9349ff2d16..af2ab640cadb 100644
--- a/drivers/gpu/drm/drm_fb_helper.c
+++ b/drivers/gpu/drm/drm_fb_helper.c
@@ -1963,7 +1963,7 @@ static int drm_fb_helper_single_fb_probe(struct drm_fb_helper *fb_helper,
 				best_depth = fmt->depth;
 		}
 	}
-	if (sizes.surface_depth != best_depth) {
+	if (sizes.surface_depth != best_depth && best_depth) {
 		DRM_INFO("requested bpp %d, scaled depth down to %d",
 			 sizes.surface_bpp, best_depth);
 		sizes.surface_depth = best_depth;
diff --git a/drivers/gpu/drm/drm_file.c b/drivers/gpu/drm/drm_file.c
index 83a5bbca6e7e..7caa3c7ed978 100644
--- a/drivers/gpu/drm/drm_file.c
+++ b/drivers/gpu/drm/drm_file.c
@@ -489,11 +489,9 @@ int drm_release(struct inode *inode, struct file *filp)
 
 	drm_close_helper(filp);
 
-	if (!--dev->open_count) {
+	if (!--dev->open_count)
 		drm_lastclose(dev);
-		if (drm_dev_is_unplugged(dev))
-			drm_put_dev(dev);
-	}
+
 	mutex_unlock(&drm_global_mutex);
 
 	drm_minor_release(minor);
diff --git a/drivers/gpu/drm/i915/gvt/cmd_parser.c b/drivers/gpu/drm/i915/gvt/cmd_parser.c
index 35b4ec3f7618..3592d04c33b2 100644
--- a/drivers/gpu/drm/i915/gvt/cmd_parser.c
+++ b/drivers/gpu/drm/i915/gvt/cmd_parser.c
@@ -1441,7 +1441,7 @@ static inline int cmd_address_audit(struct parser_exec_state *s,
 	}
 
 	if (index_mode)	{
-		if (guest_gma >= I915_GTT_PAGE_SIZE / sizeof(u64)) {
+		if (guest_gma >= I915_GTT_PAGE_SIZE) {
 			ret = -EFAULT;
 			goto err;
 		}
diff --git a/drivers/gpu/drm/i915/gvt/gtt.c b/drivers/gpu/drm/i915/gvt/gtt.c
index c7103dd2d8d5..d7052ab7908c 100644
--- a/drivers/gpu/drm/i915/gvt/gtt.c
+++ b/drivers/gpu/drm/i915/gvt/gtt.c
@@ -1882,7 +1882,11 @@ struct intel_vgpu_mm *intel_vgpu_create_ppgtt_mm(struct intel_vgpu *vgpu,
 	}
 
 	list_add_tail(&mm->ppgtt_mm.list, &vgpu->gtt.ppgtt_mm_list_head);
+
+	mutex_lock(&gvt->gtt.ppgtt_mm_lock);
 	list_add_tail(&mm->ppgtt_mm.lru_list, &gvt->gtt.ppgtt_mm_lru_list_head);
+	mutex_unlock(&gvt->gtt.ppgtt_mm_lock);
+
 	return mm;
 }
 
@@ -1967,9 +1971,10 @@ int intel_vgpu_pin_mm(struct intel_vgpu_mm *mm)
 		if (ret)
 			return ret;
 
+		mutex_lock(&mm->vgpu->gvt->gtt.ppgtt_mm_lock);
 		list_move_tail(&mm->ppgtt_mm.lru_list,
 			       &mm->vgpu->gvt->gtt.ppgtt_mm_lru_list_head);
-
+		mutex_unlock(&mm->vgpu->gvt->gtt.ppgtt_mm_lock);
 	}
 
 	return 0;
@@ -1980,6 +1985,8 @@ static int reclaim_one_ppgtt_mm(struct intel_gvt *gvt)
 	struct intel_vgpu_mm *mm;
 	struct list_head *pos, *n;
 
+	mutex_lock(&gvt->gtt.ppgtt_mm_lock);
+
 	list_for_each_safe(pos, n, &gvt->gtt.ppgtt_mm_lru_list_head) {
 		mm = container_of(pos, struct intel_vgpu_mm, ppgtt_mm.lru_list);
 
@@ -1987,9 +1994,11 @@ static int reclaim_one_ppgtt_mm(struct intel_gvt *gvt)
 			continue;
 
 		list_del_init(&mm->ppgtt_mm.lru_list);
+		mutex_unlock(&gvt->gtt.ppgtt_mm_lock);
 		invalidate_ppgtt_mm(mm);
 		return 1;
 	}
+	mutex_unlock(&gvt->gtt.ppgtt_mm_lock);
 	return 0;
 }
 
@@ -2659,6 +2668,7 @@ int intel_gvt_init_gtt(struct intel_gvt *gvt)
 		}
 	}
 	INIT_LIST_HEAD(&gvt->gtt.ppgtt_mm_lru_list_head);
+	mutex_init(&gvt->gtt.ppgtt_mm_lock);
 	return 0;
 }
 
@@ -2699,7 +2709,9 @@ void intel_vgpu_invalidate_ppgtt(struct intel_vgpu *vgpu)
 	list_for_each_safe(pos, n, &vgpu->gtt.ppgtt_mm_list_head) {
 		mm = container_of(pos, struct intel_vgpu_mm, ppgtt_mm.list);
 		if (mm->type == INTEL_GVT_MM_PPGTT) {
+			mutex_lock(&vgpu->gvt->gtt.ppgtt_mm_lock);
 			list_del_init(&mm->ppgtt_mm.lru_list);
+			mutex_unlock(&vgpu->gvt->gtt.ppgtt_mm_lock);
 			if (mm->ppgtt_mm.shadowed)
 				invalidate_ppgtt_mm(mm);
 		}
diff --git a/drivers/gpu/drm/i915/gvt/gtt.h b/drivers/gpu/drm/i915/gvt/gtt.h
index d8cb04cc946d..edb610dc5d86 100644
--- a/drivers/gpu/drm/i915/gvt/gtt.h
+++ b/drivers/gpu/drm/i915/gvt/gtt.h
@@ -88,6 +88,7 @@ struct intel_gvt_gtt {
 	void (*mm_free_page_table)(struct intel_vgpu_mm *mm);
 	struct list_head oos_page_use_list_head;
 	struct list_head oos_page_free_list_head;
+	struct mutex ppgtt_mm_lock;
 	struct list_head ppgtt_mm_lru_list_head;
 
 	struct page *scratch_page;
diff --git a/drivers/gpu/drm/i915/gvt/mmio_context.c b/drivers/gpu/drm/i915/gvt/mmio_context.c
index 7d84cfb9051a..7902fb162d09 100644
--- a/drivers/gpu/drm/i915/gvt/mmio_context.c
+++ b/drivers/gpu/drm/i915/gvt/mmio_context.c
@@ -132,6 +132,7 @@ static struct engine_mmio gen9_engine_mmio_list[] __cacheline_aligned = {
 
 	{RCS, GEN9_GAMT_ECO_REG_RW_IA, 0x0, false}, /* 0x4ab0 */
 	{RCS, GEN9_CSFE_CHICKEN1_RCS, 0xffff, false}, /* 0x20d4 */
+	{RCS, _MMIO(0x20D8), 0xffff, true}, /* 0x20d8 */
 
 	{RCS, GEN8_GARBCNTL, 0x0, false}, /* 0xb004 */
 	{RCS, GEN7_FF_THREAD_MODE, 0x0, false}, /* 0x20a0 */
diff --git a/drivers/gpu/drm/i915/gvt/scheduler.c b/drivers/gpu/drm/i915/gvt/scheduler.c
index 1bb8f936fdaa..159192c097cc 100644
--- a/drivers/gpu/drm/i915/gvt/scheduler.c
+++ b/drivers/gpu/drm/i915/gvt/scheduler.c
@@ -346,7 +346,7 @@ static int set_context_ppgtt_from_shadow(struct intel_vgpu_workload *workload,
 	int i = 0;
 
 	if (mm->type != INTEL_GVT_MM_PPGTT || !mm->ppgtt_mm.shadowed)
-		return -1;
+		return -EINVAL;
 
 	if (mm->ppgtt_mm.root_entry_type == GTT_TYPE_PPGTT_ROOT_L4_ENTRY) {
 		px_dma(&ppgtt->pml4) = mm->ppgtt_mm.shadow_pdps[0];
@@ -410,12 +410,6 @@ int intel_gvt_scan_and_shadow_workload(struct intel_vgpu_workload *workload)
 	if (workload->shadow)
 		return 0;
 
-	ret = set_context_ppgtt_from_shadow(workload, shadow_ctx);
-	if (ret < 0) {
-		gvt_vgpu_err("workload shadow ppgtt isn't ready\n");
-		return ret;
-	}
-
 	/* pin shadow context by gvt even the shadow context will be pinned
 	 * when i915 alloc request. That is because gvt will update the guest
 	 * context from shadow context when workload is completed, and at that
@@ -678,6 +672,9 @@ static int dispatch_workload(struct intel_vgpu_workload *workload)
 {
 	struct intel_vgpu *vgpu = workload->vgpu;
 	struct drm_i915_private *dev_priv = vgpu->gvt->dev_priv;
+	struct intel_vgpu_submission *s = &vgpu->submission;
+	struct i915_gem_context *shadow_ctx = s->shadow_ctx;
+	struct i915_request *rq;
 	int ring_id = workload->ring_id;
 	int ret;
 
@@ -687,6 +684,12 @@ static int dispatch_workload(struct intel_vgpu_workload *workload)
 	mutex_lock(&vgpu->vgpu_lock);
 	mutex_lock(&dev_priv->drm.struct_mutex);
 
+	ret = set_context_ppgtt_from_shadow(workload, shadow_ctx);
+	if (ret < 0) {
+		gvt_vgpu_err("workload shadow ppgtt isn't ready\n");
+		goto err_req;
+	}
+
 	ret = intel_gvt_workload_req_alloc(workload);
 	if (ret)
 		goto err_req;
@@ -703,6 +706,14 @@ static int dispatch_workload(struct intel_vgpu_workload *workload)
 
 	ret = prepare_workload(workload);
 out:
+	if (ret) {
+		/* We might still need to add request with
+		 * clean ctx to retire it properly..
+		 */
+		rq = fetch_and_zero(&workload->req);
+		i915_request_put(rq);
+	}
+
 	if (!IS_ERR_OR_NULL(workload->req)) {
 		gvt_dbg_sched("ring id %d submit workload to i915 %p\n",
 				ring_id, workload->req);
@@ -739,7 +750,8 @@ static struct intel_vgpu_workload *pick_next_workload(
 		goto out;
 	}
 
-	if (list_empty(workload_q_head(scheduler->current_vgpu, ring_id)))
+	if (!scheduler->current_vgpu->active ||
+	    list_empty(workload_q_head(scheduler->current_vgpu, ring_id)))
 		goto out;
 
 	/*
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 9adc7bb9e69c..a67a63b5aa84 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -2346,7 +2346,8 @@ static inline unsigned int i915_sg_segment_size(void)
 				 INTEL_DEVID(dev_priv) == 0x5915 || \
 				 INTEL_DEVID(dev_priv) == 0x591E)
 #define IS_AML_ULX(dev_priv)	(INTEL_DEVID(dev_priv) == 0x591C || \
-				 INTEL_DEVID(dev_priv) == 0x87C0)
+				 INTEL_DEVID(dev_priv) == 0x87C0 || \
+				 INTEL_DEVID(dev_priv) == 0x87CA)
 #define IS_SKL_GT2(dev_priv)	(IS_SKYLAKE(dev_priv) && \
 				 INTEL_INFO(dev_priv)->gt == 2)
 #define IS_SKL_GT3(dev_priv)	(IS_SKYLAKE(dev_priv) && \
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 638a586469f9..047855dd8c6b 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -2863,7 +2863,7 @@ enum i915_power_well_id {
 #define GEN11_GT_VEBOX_VDBOX_DISABLE	_MMIO(0x9140)
 #define   GEN11_GT_VDBOX_DISABLE_MASK	0xff
 #define   GEN11_GT_VEBOX_DISABLE_SHIFT	16
-#define   GEN11_GT_VEBOX_DISABLE_MASK	(0xff << GEN11_GT_VEBOX_DISABLE_SHIFT)
+#define   GEN11_GT_VEBOX_DISABLE_MASK	(0x0f << GEN11_GT_VEBOX_DISABLE_SHIFT)
 
 #define GEN11_EU_DISABLE _MMIO(0x9134)
 #define GEN11_EU_DIS_MASK 0xFF
@@ -9243,7 +9243,7 @@ enum skl_power_gate {
 #define TRANS_DDI_FUNC_CTL2(tran)	_MMIO_TRANS2(tran, \
 						     _TRANS_DDI_FUNC_CTL2_A)
 #define  PORT_SYNC_MODE_ENABLE			(1 << 4)
-#define  PORT_SYNC_MODE_MASTER_SELECT(x)	((x) < 0)
+#define  PORT_SYNC_MODE_MASTER_SELECT(x)	((x) << 0)
 #define  PORT_SYNC_MODE_MASTER_SELECT_MASK	(0x7 << 0)
 #define  PORT_SYNC_MODE_MASTER_SELECT_SHIFT	0
 
diff --git a/drivers/gpu/drm/i915/selftests/i915_gem_evict.c b/drivers/gpu/drm/i915/selftests/i915_gem_evict.c
index 32dce7176f63..b9b0ea4e2404 100644
--- a/drivers/gpu/drm/i915/selftests/i915_gem_evict.c
+++ b/drivers/gpu/drm/i915/selftests/i915_gem_evict.c
@@ -455,7 +455,7 @@ static int igt_evict_contexts(void *arg)
 			struct i915_gem_context *ctx;
 
 			ctx = live_context(i915, file);
-			if (!ctx)
+			if (IS_ERR(ctx))
 				break;
 
 			/* We will need some GGTT space for the rq's context */
diff --git a/drivers/gpu/drm/meson/meson_drv.c b/drivers/gpu/drm/meson/meson_drv.c
index 2281ed3eb774..8a4ebcb6405c 100644
--- a/drivers/gpu/drm/meson/meson_drv.c
+++ b/drivers/gpu/drm/meson/meson_drv.c
@@ -337,12 +337,14 @@ static int meson_drv_bind_master(struct device *dev, bool has_components)
 
 	ret = drm_dev_register(drm, 0);
 	if (ret)
-		goto free_drm;
+		goto uninstall_irq;
 
 	drm_fbdev_generic_setup(drm, 32);
 
 	return 0;
 
+uninstall_irq:
+	drm_irq_uninstall(drm);
 free_drm:
 	drm_dev_put(drm);
 
@@ -356,8 +358,8 @@ static int meson_drv_bind(struct device *dev)
 
 static void meson_drv_unbind(struct device *dev)
 {
-	struct drm_device *drm = dev_get_drvdata(dev);
-	struct meson_drm *priv = drm->dev_private;
+	struct meson_drm *priv = dev_get_drvdata(dev);
+	struct drm_device *drm = priv->drm;
 
 	if (priv->canvas) {
 		meson_canvas_free(priv->canvas, priv->canvas_id_osd1);
@@ -367,6 +369,7 @@ static void meson_drv_unbind(struct device *dev)
 	}
 
 	drm_dev_unregister(drm);
+	drm_irq_uninstall(drm);
 	drm_kms_helper_poll_fini(drm);
 	drm_mode_config_cleanup(drm);
 	drm_dev_put(drm);
diff --git a/drivers/gpu/drm/meson/meson_dw_hdmi.c b/drivers/gpu/drm/meson/meson_dw_hdmi.c
index e28814f4ea6c..563953ec6ad0 100644
--- a/drivers/gpu/drm/meson/meson_dw_hdmi.c
+++ b/drivers/gpu/drm/meson/meson_dw_hdmi.c
@@ -569,7 +569,8 @@ dw_hdmi_mode_valid(struct drm_connector *connector,
 	DRM_DEBUG_DRIVER("Modeline " DRM_MODE_FMT "\n", DRM_MODE_ARG(mode));
 
 	/* If sink max TMDS clock, we reject the mode */
-	if (mode->clock > connector->display_info.max_tmds_clock)
+	if (connector->display_info.max_tmds_clock &&
+	    mode->clock > connector->display_info.max_tmds_clock)
 		return MODE_BAD;
 
 	/* Check against non-VIC supported modes */
diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
index c7d4c6073ea5..0d4ade9d4722 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
@@ -541,6 +541,18 @@ static void vop_core_clks_disable(struct vop *vop)
 	clk_disable(vop->hclk);
 }
 
+static void vop_win_disable(struct vop *vop, const struct vop_win_data *win)
+{
+	if (win->phy->scl && win->phy->scl->ext) {
+		VOP_SCL_SET_EXT(vop, win, yrgb_hor_scl_mode, SCALE_NONE);
+		VOP_SCL_SET_EXT(vop, win, yrgb_ver_scl_mode, SCALE_NONE);
+		VOP_SCL_SET_EXT(vop, win, cbcr_hor_scl_mode, SCALE_NONE);
+		VOP_SCL_SET_EXT(vop, win, cbcr_ver_scl_mode, SCALE_NONE);
+	}
+
+	VOP_WIN_SET(vop, win, enable, 0);
+}
+
 static int vop_enable(struct drm_crtc *crtc)
 {
 	struct vop *vop = to_vop(crtc);
@@ -586,7 +598,7 @@ static int vop_enable(struct drm_crtc *crtc)
 		struct vop_win *vop_win = &vop->win[i];
 		const struct vop_win_data *win = vop_win->data;
 
-		VOP_WIN_SET(vop, win, enable, 0);
+		vop_win_disable(vop, win);
 	}
 	spin_unlock(&vop->reg_lock);
 
@@ -735,7 +747,7 @@ static void vop_plane_atomic_disable(struct drm_plane *plane,
 
 	spin_lock(&vop->reg_lock);
 
-	VOP_WIN_SET(vop, win, enable, 0);
+	vop_win_disable(vop, win);
 
 	spin_unlock(&vop->reg_lock);
 }
@@ -1622,7 +1634,7 @@ static int vop_initial(struct vop *vop)
 		int channel = i * 2 + 1;
 
 		VOP_WIN_SET(vop, win, channel, (channel + 1) << 4 | channel);
-		VOP_WIN_SET(vop, win, enable, 0);
+		vop_win_disable(vop, win);
 		VOP_WIN_SET(vop, win, gate, 1);
 	}
 
diff --git a/drivers/gpu/drm/tegra/hub.c b/drivers/gpu/drm/tegra/hub.c
index ba9b3cfb8c3d..b3436c2aed68 100644
--- a/drivers/gpu/drm/tegra/hub.c
+++ b/drivers/gpu/drm/tegra/hub.c
@@ -378,14 +378,16 @@ static int tegra_shared_plane_atomic_check(struct drm_plane *plane,
 static void tegra_shared_plane_atomic_disable(struct drm_plane *plane,
 					      struct drm_plane_state *old_state)
 {
-	struct tegra_dc *dc = to_tegra_dc(old_state->crtc);
 	struct tegra_plane *p = to_tegra_plane(plane);
+	struct tegra_dc *dc;
 	u32 value;
 
 	/* rien ne va plus */
 	if (!old_state || !old_state->crtc)
 		return;
 
+	dc = to_tegra_dc(old_state->crtc);
+
 	/*
 	 * XXX Legacy helpers seem to sometimes call ->atomic_disable() even
 	 * on planes that are already disabled. Make sure we fallback to the
diff --git a/drivers/gpu/drm/tegra/vic.c b/drivers/gpu/drm/tegra/vic.c
index 39bfed9623de..982ce37ecde1 100644
--- a/drivers/gpu/drm/tegra/vic.c
+++ b/drivers/gpu/drm/tegra/vic.c
@@ -106,6 +106,7 @@ static int vic_boot(struct vic *vic)
 	if (vic->booted)
 		return 0;
 
+#ifdef CONFIG_IOMMU_API
 	if (vic->config->supports_sid) {
 		struct iommu_fwspec *spec = dev_iommu_fwspec_get(vic->dev);
 		u32 value;
@@ -121,6 +122,7 @@ static int vic_boot(struct vic *vic)
 			vic_writel(vic, value, VIC_THI_STREAMID1);
 		}
 	}
+#endif
 
 	/* setup clockgating registers */
 	vic_writel(vic, CG_IDLE_CG_DLY_CNT(4) |
diff --git a/drivers/gpu/drm/udl/udl_connector.c b/drivers/gpu/drm/udl/udl_connector.c
index 66885c24590f..c1bd5e3d9e4a 100644
--- a/drivers/gpu/drm/udl/udl_connector.c
+++ b/drivers/gpu/drm/udl/udl_connector.c
@@ -18,18 +18,19 @@
 #include "udl_connector.h"
 #include "udl_drv.h"
 
-static bool udl_get_edid_block(struct udl_device *udl, int block_idx,
-							   u8 *buff)
+static int udl_get_edid_block(void *data, u8 *buf, unsigned int block,
+			       size_t len)
 {
 	int ret, i;
 	u8 *read_buff;
+	struct udl_device *udl = data;
 
 	read_buff = kmalloc(2, GFP_KERNEL);
 	if (!read_buff)
-		return false;
+		return -1;
 
-	for (i = 0; i < EDID_LENGTH; i++) {
-		int bval = (i + block_idx * EDID_LENGTH) << 8;
+	for (i = 0; i < len; i++) {
+		int bval = (i + block * EDID_LENGTH) << 8;
 		ret = usb_control_msg(udl->udev,
 				      usb_rcvctrlpipe(udl->udev, 0),
 					  (0x02), (0x80 | (0x02 << 5)), bval,
@@ -37,60 +38,13 @@ static bool udl_get_edid_block(struct udl_device *udl, int block_idx,
 		if (ret < 1) {
 			DRM_ERROR("Read EDID byte %d failed err %x\n", i, ret);
 			kfree(read_buff);
-			return false;
+			return -1;
 		}
-		buff[i] = read_buff[1];
+		buf[i] = read_buff[1];
 	}
 
 	kfree(read_buff);
-	return true;
-}
-
-static bool udl_get_edid(struct udl_device *udl, u8 **result_buff,
-			 int *result_buff_size)
-{
-	int i, extensions;
-	u8 *block_buff = NULL, *buff_ptr;
-
-	block_buff = kmalloc(EDID_LENGTH, GFP_KERNEL);
-	if (block_buff == NULL)
-		return false;
-
-	if (udl_get_edid_block(udl, 0, block_buff) &&
-	    memchr_inv(block_buff, 0, EDID_LENGTH)) {
-		extensions = ((struct edid *)block_buff)->extensions;
-		if (extensions > 0) {
-			/* we have to read all extensions one by one */
-			*result_buff_size = EDID_LENGTH * (extensions + 1);
-			*result_buff = kmalloc(*result_buff_size, GFP_KERNEL);
-			buff_ptr = *result_buff;
-			if (buff_ptr == NULL) {
-				kfree(block_buff);
-				return false;
-			}
-			memcpy(buff_ptr, block_buff, EDID_LENGTH);
-			kfree(block_buff);
-			buff_ptr += EDID_LENGTH;
-			for (i = 1; i < extensions; ++i) {
-				if (udl_get_edid_block(udl, i, buff_ptr)) {
-					buff_ptr += EDID_LENGTH;
-				} else {
-					kfree(*result_buff);
-					*result_buff = NULL;
-					return false;
-				}
-			}
-			return true;
-		}
-		/* we have only base edid block */
-		*result_buff = block_buff;
-		*result_buff_size = EDID_LENGTH;
-		return true;
-	}
-
-	kfree(block_buff);
-
-	return false;
+	return 0;
 }
 
 static int udl_get_modes(struct drm_connector *connector)
@@ -122,8 +76,6 @@ static enum drm_mode_status udl_mode_valid(struct drm_connector *connector,
 static enum drm_connector_status
 udl_detect(struct drm_connector *connector, bool force)
 {
-	u8 *edid_buff = NULL;
-	int edid_buff_size = 0;
 	struct udl_device *udl = connector->dev->dev_private;
 	struct udl_drm_connector *udl_connector =
 					container_of(connector,
@@ -136,12 +88,10 @@ udl_detect(struct drm_connector *connector, bool force)
 		udl_connector->edid = NULL;
 	}
 
-
-	if (!udl_get_edid(udl, &edid_buff, &edid_buff_size))
+	udl_connector->edid = drm_do_get_edid(connector, udl_get_edid_block, udl);
+	if (!udl_connector->edid)
 		return connector_status_disconnected;
 
-	udl_connector->edid = (struct edid *)edid_buff;
-	
 	return connector_status_connected;
 }
 
diff --git a/drivers/gpu/drm/vgem/vgem_drv.c b/drivers/gpu/drm/vgem/vgem_drv.c
index 5930facd6d2d..11a8f99ba18c 100644
--- a/drivers/gpu/drm/vgem/vgem_drv.c
+++ b/drivers/gpu/drm/vgem/vgem_drv.c
@@ -191,13 +191,9 @@ static struct drm_gem_object *vgem_gem_create(struct drm_device *dev,
 	ret = drm_gem_handle_create(file, &obj->base, handle);
 	drm_gem_object_put_unlocked(&obj->base);
 	if (ret)
-		goto err;
+		return ERR_PTR(ret);
 
 	return &obj->base;
-
-err:
-	__vgem_gem_destroy(obj);
-	return ERR_PTR(ret);
 }
 
 static int vgem_gem_dumb_create(struct drm_file *file, struct drm_device *dev,
diff --git a/drivers/gpu/drm/vkms/vkms_gem.c b/drivers/gpu/drm/vkms/vkms_gem.c
index 138b0bb325cf..69048e73377d 100644
--- a/drivers/gpu/drm/vkms/vkms_gem.c
+++ b/drivers/gpu/drm/vkms/vkms_gem.c
@@ -111,11 +111,8 @@ struct drm_gem_object *vkms_gem_create(struct drm_device *dev,
 
 	ret = drm_gem_handle_create(file, &obj->gem, handle);
 	drm_gem_object_put_unlocked(&obj->gem);
-	if (ret) {
-		drm_gem_object_release(&obj->gem);
-		kfree(obj);
+	if (ret)
 		return ERR_PTR(ret);
-	}
 
 	return &obj->gem;
 }