[RESEND,2/2] drm/virtio: kms: use drm managed resources

Commit Message

Danilo Krummrich July 20, 2022, 2:02 p.m. UTC

Allocate driver structures with drm managed resource allocators in order
to cleanup/simplify the drm driver .release callback.

Signed-off-by: Danilo Krummrich <[e-mail]>
---
 drivers/gpu/drm/virtio/virtgpu_kms.c | 16 +++++++---------
 1 file changed, 7 insertions(+), 9 deletions(-)

Comments

Sam Ravnborg July 20, 2022, 3:20 p.m. UTC | #1

Hi Danilo,

On Wed, Jul 20, 2022 at 04:02:14PM +0200, Danilo Krummrich wrote:
> Allocate driver structures with drm managed resource allocators in order
> to cleanup/simplify the drm driver .release callback.
> 
> Signed-off-by: Danilo Krummrich <[e-mail]>

This patch is already applied to drm-misc (drm-misc-next) as
90caf42527a40d09e0eed9fcbca08d757f4fd493

	Sam

Patch

diff --git a/drivers/gpu/drm/virtio/virtgpu_kms.c b/drivers/gpu/drm/virtio/virtgpu_kms.c
index 3313b92db531..63ebe63ef409 100644
--- a/drivers/gpu/drm/virtio/virtgpu_kms.c
+++ b/drivers/gpu/drm/virtio/virtgpu_kms.c
@@ -28,6 +28,7 @@ 
 #include <linux/virtio_ring.h>
 
 #include <drm/drm_file.h>
+#include <drm/drm_managed.h>
 
 #include "virtgpu_drv.h"
 
@@ -66,10 +67,11 @@  static void virtio_gpu_get_capsets(struct virtio_gpu_device *vgdev,
 {
 	int i, ret;
 	bool invalid_capset_id = false;
+	struct drm_device *drm = vgdev->ddev;
 
-	vgdev->capsets = kcalloc(num_capsets,
-				 sizeof(struct virtio_gpu_drv_capset),
-				 GFP_KERNEL);
+	vgdev->capsets = drmm_kcalloc(drm, num_capsets,
+				      sizeof(struct virtio_gpu_drv_capset),
+				      GFP_KERNEL);
 	if (!vgdev->capsets) {
 		DRM_ERROR("failed to allocate cap sets\n");
 		return;
@@ -94,7 +96,7 @@  static void virtio_gpu_get_capsets(struct virtio_gpu_device *vgdev,
 
 		if (ret == 0 || invalid_capset_id) {
 			spin_lock(&vgdev->display_info_lock);
-			kfree(vgdev->capsets);
+			drmm_kfree(drm, vgdev->capsets);
 			vgdev->capsets = NULL;
 			spin_unlock(&vgdev->display_info_lock);
 			return;
@@ -126,7 +128,7 @@  int virtio_gpu_init(struct drm_device *dev)
 	if (!virtio_has_feature(dev_to_virtio(dev->dev), VIRTIO_F_VERSION_1))
 		return -ENODEV;
 
-	vgdev = kzalloc(sizeof(struct virtio_gpu_device), GFP_KERNEL);
+	vgdev = drmm_kzalloc(dev, sizeof(struct virtio_gpu_device), GFP_KERNEL);
 	if (!vgdev)
 		return -ENOMEM;
 
@@ -257,7 +259,6 @@  int virtio_gpu_init(struct drm_device *dev)
 	vgdev->vdev->config->del_vqs(vgdev->vdev);
 err_vqs:
 	dev->dev_private = NULL;
-	kfree(vgdev);
 	return ret;
 }
 
@@ -296,9 +297,6 @@  void virtio_gpu_release(struct drm_device *dev)
 
 	if (vgdev->has_host_visible)
 		drm_mm_takedown(&vgdev->host_visible_mm);
-
-	kfree(vgdev->capsets);
-	kfree(vgdev);
 }
 
 int virtio_gpu_driver_open(struct drm_device *dev, struct drm_file *file)