Merge tag 'drm-fixes-2023-02-17' of git://anongit.freedesktop.org/drm/drm

Pull drm fixes from Dave Airlie:
 "Just a final collection of misc fixes, the biggest disables the
  recently added dynamic debugging support, it has a regression that
  needs some bigger fixes.

  Otherwise a bunch of fixes across the board, vc4, amdgpu and vmwgfx
  mostly, with some smaller i915 and ast fixes.

  drm:
   - dynamic debug disable for now

  fbdev:
   - deferred i/o device close fix

  amdgpu:
   - Fix GC11.x suspend warning
   - Fix display warning

  vc4:
   - YUV planes fix
   - hdmi display fix
   - crtc reduced blanking fix

  ast:
   - fix start address computation

  vmwgfx:
   - fix bo/handle races

  i915:
   - gen11 WA fix"

* tag 'drm-fixes-2023-02-17' of git://anongit.freedesktop.org/drm/drm:
  drm/amd/display: Fail atomic_check early on normalize_zpos error
  drm/amd/amdgpu: fix warning during suspend
  drm/vmwgfx: Do not drop the reference to the handle too soon
  drm/vmwgfx: Stop accessing buffer objects which failed init
  drm/i915/gen11: Wa_1408615072/Wa_1407596294 should be on GT list
  drm: Disable dynamic debug as broken
  drm/ast: Fix start address computation
  fbdev: Fix invalid page access after closing deferred I/O devices
  drm/vc4: crtc: Increase setup cost in core clock calculation to handle extreme reduced blanking
  drm/vc4: hdmi: Always enable GCP with AVMUTE cleared
  drm/vc4: Fix YUV plane handling when planes are in different buffers

19 files changed, 73 insertions, 38 deletions

diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig
index 315cbdf61979..9abfb482b615 100644
--- a/drivers/gpu/drm/Kconfig
+++ b/drivers/gpu/drm/Kconfig
@@ -53,7 +53,8 @@ config DRM_DEBUG_MM
 
 config DRM_USE_DYNAMIC_DEBUG
 	bool "use dynamic debug to implement drm.debug"
-	default y
+	default n
+	depends on BROKEN
 	depends on DRM
 	depends on DYNAMIC_DEBUG || DYNAMIC_DEBUG_CORE
 	depends on JUMP_LABEL
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 2f28a8c02f64..fbf2f24169eb 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -4268,6 +4268,9 @@ exit:
 	}
 	adev->in_suspend = false;
 
+	if (adev->enable_mes)
+		amdgpu_mes_self_test(adev);
+
 	if (amdgpu_acpi_smart_shift_update(dev, AMDGPU_SS_DEV_D0))
 		DRM_WARN("smart shift update failed\n");
 
diff --git a/drivers/gpu/drm/amd/amdgpu/mes_v11_0.c b/drivers/gpu/drm/amd/amdgpu/mes_v11_0.c
index 5dff79e8f301..1c4787000a5f 100644
--- a/drivers/gpu/drm/amd/amdgpu/mes_v11_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/mes_v11_0.c
@@ -1344,7 +1344,7 @@ static int mes_v11_0_late_init(void *handle)
 	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
 
 	/* it's only intended for use in mes_self_test case, not for s0ix and reset */
-	if (!amdgpu_in_reset(adev) && !adev->in_s0ix &&
+	if (!amdgpu_in_reset(adev) && !adev->in_s0ix && !adev->in_suspend &&
 	    (adev->ip_versions[GC_HWIP][0] != IP_VERSION(11, 0, 3)))
 		amdgpu_mes_self_test(adev);
 
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 93dee3d1a483..9c7b69d377bd 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -9658,7 +9658,11 @@ static int amdgpu_dm_atomic_check(struct drm_device *dev,
 	 * `dcn10_can_pipe_disable_cursor`). By now, all modified planes are in
 	 * atomic state, so call drm helper to normalize zpos.
 	 */
-	drm_atomic_normalize_zpos(dev, state);
+	ret = drm_atomic_normalize_zpos(dev, state);
+	if (ret) {
+		drm_dbg(dev, "drm_atomic_normalize_zpos() failed\n");
+		goto fail;
+	}
 
 	/* Remove exiting planes if they are modified */
 	for_each_oldnew_plane_in_state_reverse(state, plane, old_plane_state, new_plane_state, i) {
diff --git a/drivers/gpu/drm/ast/ast_mode.c b/drivers/gpu/drm/ast/ast_mode.c
index c7443317c747..66a4a41c3fe9 100644
--- a/drivers/gpu/drm/ast/ast_mode.c
+++ b/drivers/gpu/drm/ast/ast_mode.c
@@ -714,7 +714,7 @@ static int ast_primary_plane_init(struct ast_private *ast)
 	struct ast_plane *ast_primary_plane = &ast->primary_plane;
 	struct drm_plane *primary_plane = &ast_primary_plane->base;
 	void __iomem *vaddr = ast->vram;
-	u64 offset = ast->vram_base;
+	u64 offset = 0; /* with shmem, the primary plane is always at offset 0 */
 	unsigned long cursor_size = roundup(AST_HWC_SIZE + AST_HWC_SIGNATURE_SIZE, PAGE_SIZE);
 	unsigned long size = ast->vram_fb_available - cursor_size;
 	int ret;
@@ -972,7 +972,7 @@ static int ast_cursor_plane_init(struct ast_private *ast)
 		return -ENOMEM;
 
 	vaddr = ast->vram + ast->vram_fb_available - size;
-	offset = ast->vram_base + ast->vram_fb_available - size;
+	offset = ast->vram_fb_available - size;
 
 	ret = ast_plane_init(dev, ast_cursor_plane, vaddr, offset, size,
 			     0x01, &ast_cursor_plane_funcs,
diff --git a/drivers/gpu/drm/i915/gt/intel_workarounds.c b/drivers/gpu/drm/i915/gt/intel_workarounds.c
index 949c19339015..a0740308555d 100644
--- a/drivers/gpu/drm/i915/gt/intel_workarounds.c
+++ b/drivers/gpu/drm/i915/gt/intel_workarounds.c
@@ -1355,6 +1355,13 @@ icl_gt_workarounds_init(struct intel_gt *gt, struct i915_wa_list *wal)
 		    GAMT_CHKN_BIT_REG,
 		    GAMT_CHKN_DISABLE_L3_COH_PIPE);
 
+	/*
+	 * Wa_1408615072:icl,ehl  (vsunit)
+	 * Wa_1407596294:icl,ehl  (hsunit)
+	 */
+	wa_write_or(wal, UNSLICE_UNIT_LEVEL_CLKGATE,
+		    VSUNIT_CLKGATE_DIS | HSUNIT_CLKGATE_DIS);
+
 	/* Wa_1407352427:icl,ehl */
 	wa_write_or(wal, UNSLICE_UNIT_LEVEL_CLKGATE2,
 		    PSDUNIT_CLKGATE_DIS);
@@ -2540,13 +2547,6 @@ rcs_engine_wa_init(struct intel_engine_cs *engine, struct i915_wa_list *wal)
 			     GEN11_ENABLE_32_PLANE_MODE);
 
 		/*
-		 * Wa_1408615072:icl,ehl  (vsunit)
-		 * Wa_1407596294:icl,ehl  (hsunit)
-		 */
-		wa_write_or(wal, UNSLICE_UNIT_LEVEL_CLKGATE,
-			    VSUNIT_CLKGATE_DIS | HSUNIT_CLKGATE_DIS);
-
-		/*
 		 * Wa_1408767742:icl[a2..forever],ehl[all]
 		 * Wa_1605460711:icl[a0..c0]
 		 */
diff --git a/drivers/gpu/drm/vc4/vc4_crtc.c b/drivers/gpu/drm/vc4/vc4_crtc.c
index 0108613e79d5..7258975331ca 100644
--- a/drivers/gpu/drm/vc4/vc4_crtc.c
+++ b/drivers/gpu/drm/vc4/vc4_crtc.c
@@ -711,7 +711,7 @@ static int vc4_crtc_atomic_check(struct drm_crtc *crtc,
 		struct vc4_encoder *vc4_encoder = to_vc4_encoder(encoder);
 
 		if (vc4_encoder->type == VC4_ENCODER_TYPE_HDMI0) {
-			vc4_state->hvs_load = max(mode->clock * mode->hdisplay / mode->htotal + 1000,
+			vc4_state->hvs_load = max(mode->clock * mode->hdisplay / mode->htotal + 8000,
 						  mode->clock * 9 / 10) * 1000;
 		} else {
 			vc4_state->hvs_load = mode->clock * 1000;
diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.c b/drivers/gpu/drm/vc4/vc4_hdmi.c
index 55744216392b..7546103f1499 100644
--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
+++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
@@ -97,6 +97,10 @@
 #define VC5_HDMI_GCP_WORD_1_GCP_SUBPACKET_BYTE_1_SHIFT	8
 #define VC5_HDMI_GCP_WORD_1_GCP_SUBPACKET_BYTE_1_MASK	VC4_MASK(15, 8)
 
+#define VC5_HDMI_GCP_WORD_1_GCP_SUBPACKET_BYTE_0_MASK	VC4_MASK(7, 0)
+#define VC5_HDMI_GCP_WORD_1_GCP_SUBPACKET_BYTE_0_SET_AVMUTE	BIT(0)
+#define VC5_HDMI_GCP_WORD_1_GCP_SUBPACKET_BYTE_0_CLEAR_AVMUTE	BIT(4)
+
 # define VC4_HD_M_SW_RST			BIT(2)
 # define VC4_HD_M_ENABLE			BIT(0)
 
@@ -1306,7 +1310,6 @@ static void vc5_hdmi_set_timings(struct vc4_hdmi *vc4_hdmi,
 					VC4_HDMI_VERTB_VBP));
 	unsigned long flags;
 	unsigned char gcp;
-	bool gcp_en;
 	u32 reg;
 	int idx;
 
@@ -1341,16 +1344,13 @@ static void vc5_hdmi_set_timings(struct vc4_hdmi *vc4_hdmi,
 	switch (vc4_state->output_bpc) {
 	case 12:
 		gcp = 6;
-		gcp_en = true;
 		break;
 	case 10:
 		gcp = 5;
-		gcp_en = true;
 		break;
 	case 8:
 	default:
-		gcp = 4;
-		gcp_en = false;
+		gcp = 0;
 		break;
 	}
 
@@ -1359,8 +1359,7 @@ static void vc5_hdmi_set_timings(struct vc4_hdmi *vc4_hdmi,
 	 * doesn't signal in GCP.
 	 */
 	if (vc4_state->output_format == VC4_HDMI_OUTPUT_YUV422) {
-		gcp = 4;
-		gcp_en = false;
+		gcp = 0;
 	}
 
 	reg = HDMI_READ(HDMI_DEEP_COLOR_CONFIG_1);
@@ -1373,11 +1372,12 @@ static void vc5_hdmi_set_timings(struct vc4_hdmi *vc4_hdmi,
 	reg = HDMI_READ(HDMI_GCP_WORD_1);
 	reg &= ~VC5_HDMI_GCP_WORD_1_GCP_SUBPACKET_BYTE_1_MASK;
 	reg |= VC4_SET_FIELD(gcp, VC5_HDMI_GCP_WORD_1_GCP_SUBPACKET_BYTE_1);
+	reg &= ~VC5_HDMI_GCP_WORD_1_GCP_SUBPACKET_BYTE_0_MASK;
+	reg |= VC5_HDMI_GCP_WORD_1_GCP_SUBPACKET_BYTE_0_CLEAR_AVMUTE;
 	HDMI_WRITE(HDMI_GCP_WORD_1, reg);
 
 	reg = HDMI_READ(HDMI_GCP_CONFIG);
-	reg &= ~VC5_HDMI_GCP_CONFIG_GCP_ENABLE;
-	reg |= gcp_en ? VC5_HDMI_GCP_CONFIG_GCP_ENABLE : 0;
+	reg |= VC5_HDMI_GCP_CONFIG_GCP_ENABLE;
 	HDMI_WRITE(HDMI_GCP_CONFIG, reg);
 
 	reg = HDMI_READ(HDMI_MISC_CONTROL);
diff --git a/drivers/gpu/drm/vc4/vc4_plane.c b/drivers/gpu/drm/vc4/vc4_plane.c
index 8b92a45a3c89..bd5acc4a8687 100644
--- a/drivers/gpu/drm/vc4/vc4_plane.c
+++ b/drivers/gpu/drm/vc4/vc4_plane.c
@@ -340,7 +340,7 @@ static int vc4_plane_setup_clipping_and_scaling(struct drm_plane_state *state)
 {
 	struct vc4_plane_state *vc4_state = to_vc4_plane_state(state);
 	struct drm_framebuffer *fb = state->fb;
-	struct drm_gem_dma_object *bo = drm_fb_dma_get_gem_obj(fb, 0);
+	struct drm_gem_dma_object *bo;
 	int num_planes = fb->format->num_planes;
 	struct drm_crtc_state *crtc_state;
 	u32 h_subsample = fb->format->hsub;
@@ -359,8 +359,10 @@ static int vc4_plane_setup_clipping_and_scaling(struct drm_plane_state *state)
 	if (ret)
 		return ret;
 
-	for (i = 0; i < num_planes; i++)
+	for (i = 0; i < num_planes; i++) {
+		bo = drm_fb_dma_get_gem_obj(fb, i);
 		vc4_state->offsets[i] = bo->dma_addr + fb->offsets[i];
+	}
 
 	/*
 	 * We don't support subpixel source positioning for scaling,
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_bo.c b/drivers/gpu/drm/vmwgfx/vmwgfx_bo.c
index aa1cd5126a32..4dcf2eb7aa80 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_bo.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_bo.c
@@ -462,6 +462,9 @@ int vmw_bo_create(struct vmw_private *vmw,
 		return -ENOMEM;
 	}
 
+	/*
+	 * vmw_bo_init will delete the *p_bo object if it fails
+	 */
 	ret = vmw_bo_init(vmw, *p_bo, size,
 			  placement, interruptible, pin,
 			  bo_free);
@@ -470,7 +473,6 @@ int vmw_bo_create(struct vmw_private *vmw,
 
 	return ret;
 out_error:
-	kfree(*p_bo);
 	*p_bo = NULL;
 	return ret;
 }
@@ -596,6 +598,7 @@ static int vmw_user_bo_synccpu_release(struct drm_file *filp,
 		ttm_bo_put(&vmw_bo->base);
 	}
 
+	drm_gem_object_put(&vmw_bo->base.base);
 	return ret;
 }
 
@@ -636,6 +639,7 @@ int vmw_user_bo_synccpu_ioctl(struct drm_device *dev, void *data,
 
 		ret = vmw_user_bo_synccpu_grab(vbo, arg->flags);
 		vmw_bo_unreference(&vbo);
+		drm_gem_object_put(&vbo->base.base);
 		if (unlikely(ret != 0)) {
 			if (ret == -ERESTARTSYS || ret == -EBUSY)
 				return -EBUSY;
@@ -693,7 +697,7 @@ int vmw_bo_unref_ioctl(struct drm_device *dev, void *data,
  * struct vmw_buffer_object should be placed.
  * Return: Zero on success, Negative error code on error.
  *
- * The vmw buffer object pointer will be refcounted.
+ * The vmw buffer object pointer will be refcounted (both ttm and gem)
  */
 int vmw_user_bo_lookup(struct drm_file *filp,
 		       uint32_t handle,
@@ -710,7 +714,6 @@ int vmw_user_bo_lookup(struct drm_file *filp,
 
 	*out = gem_to_vmw_bo(gobj);
 	ttm_bo_get(&(*out)->base);
-	drm_gem_object_put(gobj);
 
 	return 0;
 }
@@ -791,7 +794,8 @@ int vmw_dumb_create(struct drm_file *file_priv,
 	ret = vmw_gem_object_create_with_handle(dev_priv, file_priv,
 						args->size, &args->handle,
 						&vbo);
-
+	/* drop reference from allocate - handle holds it now */
+	drm_gem_object_put(&vbo->base.base);
 	return ret;
 }
 
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c b/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c
index a44d53e33cdb..c0686283ffd1 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c
@@ -1160,6 +1160,7 @@ static int vmw_translate_mob_ptr(struct vmw_private *dev_priv,
 	}
 	ret = vmw_validation_add_bo(sw_context->ctx, vmw_bo, true, false);
 	ttm_bo_put(&vmw_bo->base);
+	drm_gem_object_put(&vmw_bo->base.base);
 	if (unlikely(ret != 0))
 		return ret;
 
@@ -1214,6 +1215,7 @@ static int vmw_translate_guest_ptr(struct vmw_private *dev_priv,
 	}
 	ret = vmw_validation_add_bo(sw_context->ctx, vmw_bo, false, false);
 	ttm_bo_put(&vmw_bo->base);
+	drm_gem_object_put(&vmw_bo->base.base);
 	if (unlikely(ret != 0))
 		return ret;
 
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_gem.c b/drivers/gpu/drm/vmwgfx/vmwgfx_gem.c
index ce609e7d758f..4d2c28e39f4e 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_gem.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_gem.c
@@ -146,14 +146,12 @@ int vmw_gem_object_create_with_handle(struct vmw_private *dev_priv,
 				    &vmw_sys_placement :
 				    &vmw_vram_sys_placement,
 			    true, false, &vmw_gem_destroy, p_vbo);
-
-	(*p_vbo)->base.base.funcs = &vmw_gem_object_funcs;
 	if (ret != 0)
 		goto out_no_bo;
 
+	(*p_vbo)->base.base.funcs = &vmw_gem_object_funcs;
+
 	ret = drm_gem_handle_create(filp, &(*p_vbo)->base.base, handle);
-	/* drop reference from allocate - handle holds it now */
-	drm_gem_object_put(&(*p_vbo)->base.base);
 out_no_bo:
 	return ret;
 }
@@ -180,6 +178,8 @@ int vmw_gem_object_create_ioctl(struct drm_device *dev, void *data,
 	rep->map_handle = drm_vma_node_offset_addr(&vbo->base.base.vma_node);
 	rep->cur_gmr_id = handle;
 	rep->cur_gmr_offset = 0;
+	/* drop reference from allocate - handle holds it now */
+	drm_gem_object_put(&vbo->base.base);
 out_no_bo:
 	return ret;
 }
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c b/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c
index 257f090071f1..445d619e1fdc 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c
@@ -1815,8 +1815,10 @@ static struct drm_framebuffer *vmw_kms_fb_create(struct drm_device *dev,
 
 err_out:
 	/* vmw_user_lookup_handle takes one ref so does new_fb */
-	if (bo)
+	if (bo) {
 		vmw_bo_unreference(&bo);
+		drm_gem_object_put(&bo->base.base);
+	}
 	if (surface)
 		vmw_surface_unreference(&surface);
 
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_overlay.c b/drivers/gpu/drm/vmwgfx/vmwgfx_overlay.c
index e9f5c89b4ca6..b5b311f2a91a 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_overlay.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_overlay.c
@@ -458,6 +458,7 @@ int vmw_overlay_ioctl(struct drm_device *dev, void *data,
 	ret = vmw_overlay_update_stream(dev_priv, buf, arg, true);
 
 	vmw_bo_unreference(&buf);
+	drm_gem_object_put(&buf->base.base);
 
 out_unlock:
 	mutex_unlock(&overlay->mutex);
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_shader.c b/drivers/gpu/drm/vmwgfx/vmwgfx_shader.c
index 108a496b5d18..51e83dfa1cac 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_shader.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_shader.c
@@ -807,6 +807,7 @@ static int vmw_shader_define(struct drm_device *dev, struct drm_file *file_priv,
 				    num_output_sig, tfile, shader_handle);
 out_bad_arg:
 	vmw_bo_unreference(&buffer);
+	drm_gem_object_put(&buffer->base.base);
 	return ret;
 }
 
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_surface.c b/drivers/gpu/drm/vmwgfx/vmwgfx_surface.c
index 3bc63ae768f3..dcfb003841b3 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_surface.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_surface.c
@@ -683,7 +683,7 @@ static void vmw_user_surface_base_release(struct ttm_base_object **p_base)
 	    container_of(base, struct vmw_user_surface, prime.base);
 	struct vmw_resource *res = &user_srf->srf.res;
 
-	if (base->shareable && res && res->backup)
+	if (res && res->backup)
 		drm_gem_object_put(&res->backup->base.base);
 
 	*p_base = NULL;
@@ -864,7 +864,11 @@ int vmw_surface_define_ioctl(struct drm_device *dev, void *data,
 			goto out_unlock;
 		}
 		vmw_bo_reference(res->backup);
-		drm_gem_object_get(&res->backup->base.base);
+		/*
+		 * We don't expose the handle to the userspace and surface
+		 * already holds a gem reference
+		 */
+		drm_gem_handle_delete(file_priv, backup_handle);
 	}
 
 	tmp = vmw_resource_reference(&srf->res);
@@ -1568,8 +1572,6 @@ vmw_gb_surface_define_internal(struct drm_device *dev,
 			drm_vma_node_offset_addr(&res->backup->base.base.vma_node);
 		rep->buffer_size = res->backup->base.base.size;
 		rep->buffer_handle = backup_handle;
-		if (user_srf->prime.base.shareable)
-			drm_gem_object_get(&res->backup->base.base);
 	} else {
 		rep->buffer_map_handle = 0;
 		rep->buffer_size = 0;
diff --git a/drivers/video/fbdev/core/fb_defio.c b/drivers/video/fbdev/core/fb_defio.c
index c730253ab85c..583cbcf09446 100644
--- a/drivers/video/fbdev/core/fb_defio.c
+++ b/drivers/video/fbdev/core/fb_defio.c
@@ -313,7 +313,7 @@ void fb_deferred_io_open(struct fb_info *info,
 }
 EXPORT_SYMBOL_GPL(fb_deferred_io_open);
 
-void fb_deferred_io_cleanup(struct fb_info *info)
+void fb_deferred_io_release(struct fb_info *info)
 {
 	struct fb_deferred_io *fbdefio = info->fbdefio;
 	struct page *page;
@@ -327,6 +327,14 @@ void fb_deferred_io_cleanup(struct fb_info *info)
 		page = fb_deferred_io_page(info, i);
 		page->mapping = NULL;
 	}
+}
+EXPORT_SYMBOL_GPL(fb_deferred_io_release);
+
+void fb_deferred_io_cleanup(struct fb_info *info)
+{
+	struct fb_deferred_io *fbdefio = info->fbdefio;
+
+	fb_deferred_io_release(info);
 
 	kvfree(info->pagerefs);
 	mutex_destroy(&fbdefio->lock);
diff --git a/drivers/video/fbdev/core/fbmem.c b/drivers/video/fbdev/core/fbmem.c
index 3a6c8458eb8d..ab3545a00abc 100644
--- a/drivers/video/fbdev/core/fbmem.c
+++ b/drivers/video/fbdev/core/fbmem.c
@@ -1454,6 +1454,10 @@ __releases(&info->lock)
 	struct fb_info * const info = file->private_data;
 
 	lock_fb_info(info);
+#if IS_ENABLED(CONFIG_FB_DEFERRED_IO)
+	if (info->fbdefio)
+		fb_deferred_io_release(info);
+#endif
 	if (info->fbops->fb_release)
 		info->fbops->fb_release(info,1);
 	module_put(info->fbops->owner);
diff --git a/include/linux/fb.h b/include/linux/fb.h
index 96b96323e9cb..73eb1f85ea8e 100644
--- a/include/linux/fb.h
+++ b/include/linux/fb.h
@@ -662,6 +662,7 @@ extern int  fb_deferred_io_init(struct fb_info *info);
 extern void fb_deferred_io_open(struct fb_info *info,
 				struct inode *inode,
 				struct file *file);
+extern void fb_deferred_io_release(struct fb_info *info);
 extern void fb_deferred_io_cleanup(struct fb_info *info);
 extern int fb_deferred_io_fsync(struct file *file, loff_t start,
 				loff_t end, int datasync);