Merge tag 'drm-misc-next-2020-09-21' of git://anongit.freedesktop.org/drm/drm-misc into drm-next

drm-misc-next for 5.10:

UAPI Changes:

Cross-subsystem Changes:
  - virtio: Merged a PR for patches that will affect drm/virtio

Core Changes:
  - dev: More devm_drm convertions and removal of drm_dev_init
  - atomic: Split out drm_atomic_helper_calc_timestamping_constants of
    drm_atomic_helper_update_legacy_modeset_state
  - ttm: More rework

Driver Changes:
  - i915: selftests improvements
  - panfrost: support for Amlogic SoC
  - vc4: one fix
  - tree-wide: conversions to devm_drm_dev_alloc,
  - ast: simplifications of the atomic modesetting code
  - panfrost: multiple fixes
  - vc4: multiple fixes
Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20200921152956.2gxnsdgxmwhvjyut@gilmour.lan

5 files changed, 48 insertions, 29 deletions

diff --git a/drivers/gpu/drm/virtio/virtgpu_debugfs.c b/drivers/gpu/drm/virtio/virtgpu_debugfs.c
index 3221520f61f0..d5b0c543bd6d 100644
--- a/drivers/gpu/drm/virtio/virtgpu_debugfs.c
+++ b/drivers/gpu/drm/virtio/virtgpu_debugfs.c
@@ -48,6 +48,7 @@ static int virtio_gpu_features(struct seq_file *m, void *data)
 	virtio_add_bool(m, "virgl", vgdev->has_virgl_3d);
 	virtio_add_bool(m, "edid", vgdev->has_edid);
 	virtio_add_bool(m, "indirect", vgdev->has_indirect);
+	virtio_add_bool(m, "resource uuid", vgdev->has_resource_assign_uuid);
 	virtio_add_int(m, "cap sets", vgdev->num_capsets);
 	virtio_add_int(m, "scanouts", vgdev->num_scanouts);
 	return 0;
diff --git a/drivers/gpu/drm/virtio/virtgpu_display.c b/drivers/gpu/drm/virtio/virtgpu_display.c
index effea07abe62..f84b7e61311b 100644
--- a/drivers/gpu/drm/virtio/virtgpu_display.c
+++ b/drivers/gpu/drm/virtio/virtgpu_display.c
@@ -325,11 +325,14 @@ static const struct drm_mode_config_funcs virtio_gpu_mode_funcs = {
 	.atomic_commit = drm_atomic_helper_commit,
 };
 
-void virtio_gpu_modeset_init(struct virtio_gpu_device *vgdev)
+int virtio_gpu_modeset_init(struct virtio_gpu_device *vgdev)
 {
-	int i;
+	int i, ret;
+
+	ret = drmm_mode_config_init(vgdev->ddev);
+	if (ret)
+		return ret;
 
-	drm_mode_config_init(vgdev->ddev);
 	vgdev->ddev->mode_config.quirk_addfb_prefer_host_byte_order = true;
 	vgdev->ddev->mode_config.funcs = &virtio_gpu_mode_funcs;
 
@@ -343,6 +346,7 @@ void virtio_gpu_modeset_init(struct virtio_gpu_device *vgdev)
 		vgdev_output_init(vgdev, i);
 
 	drm_mode_config_reset(vgdev->ddev);
+	return 0;
 }
 
 void virtio_gpu_modeset_fini(struct virtio_gpu_device *vgdev)
@@ -351,5 +355,4 @@ void virtio_gpu_modeset_fini(struct virtio_gpu_device *vgdev)
 
 	for (i = 0 ; i < vgdev->num_scanouts; ++i)
 		kfree(vgdev->outputs[i].edid);
-	drm_mode_config_cleanup(vgdev->ddev);
 }
diff --git a/drivers/gpu/drm/virtio/virtgpu_drv.h b/drivers/gpu/drm/virtio/virtgpu_drv.h
index a52b7a39f286..55c34b4fc3e9 100644
--- a/drivers/gpu/drm/virtio/virtgpu_drv.h
+++ b/drivers/gpu/drm/virtio/virtgpu_drv.h
@@ -352,7 +352,7 @@ virtio_gpu_cmd_resource_assign_uuid(struct virtio_gpu_device *vgdev,
 				    struct virtio_gpu_object_array *objs);
 
 /* virtgpu_display.c */
-void virtio_gpu_modeset_init(struct virtio_gpu_device *vgdev);
+int virtio_gpu_modeset_init(struct virtio_gpu_device *vgdev);
 void virtio_gpu_modeset_fini(struct virtio_gpu_device *vgdev);
 
 /* virtgpu_plane.c */
diff --git a/drivers/gpu/drm/virtio/virtgpu_kms.c b/drivers/gpu/drm/virtio/virtgpu_kms.c
index 75d0dc2f6d28..eed57a931309 100644
--- a/drivers/gpu/drm/virtio/virtgpu_kms.c
+++ b/drivers/gpu/drm/virtio/virtgpu_kms.c
@@ -80,8 +80,10 @@ static void virtio_gpu_get_capsets(struct virtio_gpu_device *vgdev,
 					 vgdev->capsets[i].id > 0, 5 * HZ);
 		if (ret == 0) {
 			DRM_ERROR("timed out waiting for cap set %d\n", i);
+			spin_lock(&vgdev->display_info_lock);
 			kfree(vgdev->capsets);
 			vgdev->capsets = NULL;
+			spin_unlock(&vgdev->display_info_lock);
 			return;
 		}
 		DRM_INFO("cap set %d: id %d, max-version %d, max-size %d\n",
@@ -103,7 +105,7 @@ int virtio_gpu_init(struct drm_device *dev)
 	/* this will expand later */
 	struct virtqueue *vqs[2];
 	u32 num_scanouts, num_capsets;
-	int ret;
+	int ret = 0;
 
 	if (!virtio_has_feature(dev_to_virtio(dev->dev), VIRTIO_F_VERSION_1))
 		return -ENODEV;
@@ -184,7 +186,11 @@ int virtio_gpu_init(struct drm_device *dev)
 			num_capsets, &num_capsets);
 	DRM_INFO("number of cap sets: %d\n", num_capsets);
 
-	virtio_gpu_modeset_init(vgdev);
+	ret = virtio_gpu_modeset_init(vgdev);
+	if (ret) {
+		DRM_ERROR("modeset init failed\n");
+		goto err_scanouts;
+	}
 
 	virtio_device_ready(vgdev->vdev);
 
diff --git a/drivers/gpu/drm/virtio/virtgpu_vq.c b/drivers/gpu/drm/virtio/virtgpu_vq.c
index 651d1b0e8e8d..07945ca238e2 100644
--- a/drivers/gpu/drm/virtio/virtgpu_vq.c
+++ b/drivers/gpu/drm/virtio/virtgpu_vq.c
@@ -320,13 +320,13 @@ static struct sg_table *vmalloc_to_sgt(char *data, uint32_t size, int *sg_ents)
 	return sgt;
 }
 
-static void virtio_gpu_queue_ctrl_sgs(struct virtio_gpu_device *vgdev,
-				      struct virtio_gpu_vbuffer *vbuf,
-				      struct virtio_gpu_fence *fence,
-				      int elemcnt,
-				      struct scatterlist **sgs,
-				      int outcnt,
-				      int incnt)
+static int virtio_gpu_queue_ctrl_sgs(struct virtio_gpu_device *vgdev,
+				     struct virtio_gpu_vbuffer *vbuf,
+				     struct virtio_gpu_fence *fence,
+				     int elemcnt,
+				     struct scatterlist **sgs,
+				     int outcnt,
+				     int incnt)
 {
 	struct virtqueue *vq = vgdev->ctrlq.vq;
 	int ret, idx;
@@ -335,7 +335,7 @@ static void virtio_gpu_queue_ctrl_sgs(struct virtio_gpu_device *vgdev,
 		if (fence && vbuf->objs)
 			virtio_gpu_array_unlock_resv(vbuf->objs);
 		free_vbuf(vgdev, vbuf);
-		return;
+		return -1;
 	}
 
 	if (vgdev->has_indirect)
@@ -373,15 +373,16 @@ again:
 	spin_unlock(&vgdev->ctrlq.qlock);
 
 	drm_dev_exit(idx);
+	return 0;
 }
 
-static void virtio_gpu_queue_fenced_ctrl_buffer(struct virtio_gpu_device *vgdev,
-						struct virtio_gpu_vbuffer *vbuf,
-						struct virtio_gpu_fence *fence)
+static int virtio_gpu_queue_fenced_ctrl_buffer(struct virtio_gpu_device *vgdev,
+					       struct virtio_gpu_vbuffer *vbuf,
+					       struct virtio_gpu_fence *fence)
 {
 	struct scatterlist *sgs[3], vcmd, vout, vresp;
 	struct sg_table *sgt = NULL;
-	int elemcnt = 0, outcnt = 0, incnt = 0;
+	int elemcnt = 0, outcnt = 0, incnt = 0, ret;
 
 	/* set up vcmd */
 	sg_init_one(&vcmd, vbuf->buf, vbuf->size);
@@ -398,7 +399,7 @@ static void virtio_gpu_queue_fenced_ctrl_buffer(struct virtio_gpu_device *vgdev,
 			if (!sgt) {
 				if (fence && vbuf->objs)
 					virtio_gpu_array_unlock_resv(vbuf->objs);
-				return;
+				return -1;
 			}
 
 			elemcnt += sg_ents;
@@ -419,13 +420,14 @@ static void virtio_gpu_queue_fenced_ctrl_buffer(struct virtio_gpu_device *vgdev,
 		incnt++;
 	}
 
-	virtio_gpu_queue_ctrl_sgs(vgdev, vbuf, fence, elemcnt, sgs, outcnt,
-				  incnt);
+	ret = virtio_gpu_queue_ctrl_sgs(vgdev, vbuf, fence, elemcnt, sgs, outcnt,
+					incnt);
 
 	if (sgt) {
 		sg_free_table(sgt);
 		kfree(sgt);
 	}
+	return ret;
 }
 
 void virtio_gpu_notify(struct virtio_gpu_device *vgdev)
@@ -444,10 +446,10 @@ void virtio_gpu_notify(struct virtio_gpu_device *vgdev)
 		virtqueue_notify(vgdev->ctrlq.vq);
 }
 
-static void virtio_gpu_queue_ctrl_buffer(struct virtio_gpu_device *vgdev,
-					 struct virtio_gpu_vbuffer *vbuf)
+static int virtio_gpu_queue_ctrl_buffer(struct virtio_gpu_device *vgdev,
+					struct virtio_gpu_vbuffer *vbuf)
 {
-	virtio_gpu_queue_fenced_ctrl_buffer(vgdev, vbuf, NULL);
+	return virtio_gpu_queue_fenced_ctrl_buffer(vgdev, vbuf, NULL);
 }
 
 static void virtio_gpu_queue_cursor(struct virtio_gpu_device *vgdev,
@@ -534,6 +536,7 @@ void virtio_gpu_cmd_unref_resource(struct virtio_gpu_device *vgdev,
 {
 	struct virtio_gpu_resource_unref *cmd_p;
 	struct virtio_gpu_vbuffer *vbuf;
+	int ret;
 
 	cmd_p = virtio_gpu_alloc_cmd_cb(vgdev, &vbuf, sizeof(*cmd_p),
 					virtio_gpu_cmd_unref_cb);
@@ -543,7 +546,9 @@ void virtio_gpu_cmd_unref_resource(struct virtio_gpu_device *vgdev,
 	cmd_p->resource_id = cpu_to_le32(bo->hw_res_handle);
 
 	vbuf->resp_cb_data = bo;
-	virtio_gpu_queue_ctrl_buffer(vgdev, vbuf);
+	ret = virtio_gpu_queue_ctrl_buffer(vgdev, vbuf);
+	if (ret < 0)
+		virtio_gpu_cleanup_object(bo);
 }
 
 void virtio_gpu_cmd_set_scanout(struct virtio_gpu_device *vgdev,
@@ -683,9 +688,13 @@ static void virtio_gpu_cmd_get_capset_info_cb(struct virtio_gpu_device *vgdev,
 	int i = le32_to_cpu(cmd->capset_index);
 
 	spin_lock(&vgdev->display_info_lock);
-	vgdev->capsets[i].id = le32_to_cpu(resp->capset_id);
-	vgdev->capsets[i].max_version = le32_to_cpu(resp->capset_max_version);
-	vgdev->capsets[i].max_size = le32_to_cpu(resp->capset_max_size);
+	if (vgdev->capsets) {
+		vgdev->capsets[i].id = le32_to_cpu(resp->capset_id);
+		vgdev->capsets[i].max_version = le32_to_cpu(resp->capset_max_version);
+		vgdev->capsets[i].max_size = le32_to_cpu(resp->capset_max_size);
+	} else {
+		DRM_ERROR("invalid capset memory.");
+	}
 	spin_unlock(&vgdev->display_info_lock);
 	wake_up(&vgdev->resp_wq);
 }