diff mbox series

[v2,3/3] drm/gem-shmem: When drm_gem_object_init failed, should release object

Message ID 20221119064131.364-1-tangchunyou@163.com
State New
Headers
Series None |

Commit Message

ChunyouTang Nov. 19, 2022, 6:41 a.m. UTC 
  when goto err_free, the object had init, so it should be release when fail.

Signed-off-by: ChunyouTang <tangchunyou@163.com>
---
 drivers/gpu/drm/drm_gem.c              | 19 ++++++++++++++++---
 drivers/gpu/drm/drm_gem_shmem_helper.c |  4 +++-
 include/drm/drm_gem.h                  |  1 +
 3 files changed, 20 insertions(+), 4 deletions(-)

Comments

Thomas Zimmermann Nov. 21, 2022, 4:12 p.m. UTC | #1 
Hi

Am 19.11.22 um 07:41 schrieb ChunyouTang:
> when goto err_free, the object had init, so it should be release when fail.
> 
> Signed-off-by: ChunyouTang <tangchunyou@163.com>

Thanks a lot. I merged the patch into drm-misc-next.

Best regards
Thomas

> ---
>   drivers/gpu/drm/drm_gem.c              | 19 ++++++++++++++++---
>   drivers/gpu/drm/drm_gem_shmem_helper.c |  4 +++-
>   include/drm/drm_gem.h                  |  1 +
>   3 files changed, 20 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/gpu/drm/drm_gem.c b/drivers/gpu/drm/drm_gem.c
> index 8b68a3c1e6ab..3e2e660717c3 100644
> --- a/drivers/gpu/drm/drm_gem.c
> +++ b/drivers/gpu/drm/drm_gem.c
> @@ -169,6 +169,20 @@ void drm_gem_private_object_init(struct drm_device *dev,
>   }
>   EXPORT_SYMBOL(drm_gem_private_object_init);
>   
> +/**
> + * drm_gem_private_object_fini - Finalize a failed drm_gem_object
> + * @obj: drm_gem_object
> + *
> + * Uninitialize an already allocated GEM object when it initialized failed
> + */
> +void drm_gem_private_object_fini(struct drm_gem_object *obj)
> +{
> +	WARN_ON(obj->dma_buf);
> +
> +	dma_resv_fini(&obj->_resv);
> +}
> +EXPORT_SYMBOL(drm_gem_private_object_fini);
> +
>   /**
>    * drm_gem_object_handle_free - release resources bound to userspace handles
>    * @obj: GEM object to clean up.
> @@ -930,12 +944,11 @@ drm_gem_release(struct drm_device *dev, struct drm_file *file_private)
>   void
>   drm_gem_object_release(struct drm_gem_object *obj)
>   {
> -	WARN_ON(obj->dma_buf);
> -
>   	if (obj->filp)
>   		fput(obj->filp);
>   
> -	dma_resv_fini(&obj->_resv);
> +	drm_gem_private_object_fini(obj);
> +
>   	drm_gem_free_mmap_offset(obj);
>   	drm_gem_lru_remove(obj);
>   }
> diff --git a/drivers/gpu/drm/drm_gem_shmem_helper.c b/drivers/gpu/drm/drm_gem_shmem_helper.c
> index 35138f8a375c..db73234edcbe 100644
> --- a/drivers/gpu/drm/drm_gem_shmem_helper.c
> +++ b/drivers/gpu/drm/drm_gem_shmem_helper.c
> @@ -79,8 +79,10 @@ __drm_gem_shmem_create(struct drm_device *dev, size_t size, bool private)
>   	} else {
>   		ret = drm_gem_object_init(dev, obj, size);
>   	}
> -	if (ret)
> +	if (ret) {
> +		drm_gem_private_object_fini(obj);
>   		goto err_free;
> +	}
>   
>   	ret = drm_gem_create_mmap_offset(obj);
>   	if (ret)
> diff --git a/include/drm/drm_gem.h b/include/drm/drm_gem.h
> index bd42f25e449c..9b1feb03069d 100644
> --- a/include/drm/drm_gem.h
> +++ b/include/drm/drm_gem.h
> @@ -405,6 +405,7 @@ int drm_gem_object_init(struct drm_device *dev,
>   			struct drm_gem_object *obj, size_t size);
>   void drm_gem_private_object_init(struct drm_device *dev,
>   				 struct drm_gem_object *obj, size_t size);
> +void drm_gem_private_object_fini(struct drm_gem_object *obj);
>   void drm_gem_vm_open(struct vm_area_struct *vma);
>   void drm_gem_vm_close(struct vm_area_struct *vma);
>   int drm_gem_mmap_obj(struct drm_gem_object *obj, unsigned long obj_size,

-- 
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Maxfeldstr. 5, 90409 Nürnberg, Germany
(HRB 36809, AG Nürnberg)
Geschäftsführer: Ivo Totev
diff mbox series

Patch

diff --git a/drivers/gpu/drm/drm_gem.c b/drivers/gpu/drm/drm_gem.c
index 8b68a3c1e6ab..3e2e660717c3 100644
--- a/drivers/gpu/drm/drm_gem.c
+++ b/drivers/gpu/drm/drm_gem.c
@@ -169,6 +169,20 @@  void drm_gem_private_object_init(struct drm_device *dev,
 }
 EXPORT_SYMBOL(drm_gem_private_object_init);
 
+/**
+ * drm_gem_private_object_fini - Finalize a failed drm_gem_object
+ * @obj: drm_gem_object
+ *
+ * Uninitialize an already allocated GEM object when it initialized failed
+ */
+void drm_gem_private_object_fini(struct drm_gem_object *obj)
+{
+	WARN_ON(obj->dma_buf);
+
+	dma_resv_fini(&obj->_resv);
+}
+EXPORT_SYMBOL(drm_gem_private_object_fini);
+
 /**
  * drm_gem_object_handle_free - release resources bound to userspace handles
  * @obj: GEM object to clean up.
@@ -930,12 +944,11 @@  drm_gem_release(struct drm_device *dev, struct drm_file *file_private)
 void
 drm_gem_object_release(struct drm_gem_object *obj)
 {
-	WARN_ON(obj->dma_buf);
-
 	if (obj->filp)
 		fput(obj->filp);
 
-	dma_resv_fini(&obj->_resv);
+	drm_gem_private_object_fini(obj);
+
 	drm_gem_free_mmap_offset(obj);
 	drm_gem_lru_remove(obj);
 }
diff --git a/drivers/gpu/drm/drm_gem_shmem_helper.c b/drivers/gpu/drm/drm_gem_shmem_helper.c
index 35138f8a375c..db73234edcbe 100644
--- a/drivers/gpu/drm/drm_gem_shmem_helper.c
+++ b/drivers/gpu/drm/drm_gem_shmem_helper.c
@@ -79,8 +79,10 @@  __drm_gem_shmem_create(struct drm_device *dev, size_t size, bool private)
 	} else {
 		ret = drm_gem_object_init(dev, obj, size);
 	}
-	if (ret)
+	if (ret) {
+		drm_gem_private_object_fini(obj);
 		goto err_free;
+	}
 
 	ret = drm_gem_create_mmap_offset(obj);
 	if (ret)
diff --git a/include/drm/drm_gem.h b/include/drm/drm_gem.h
index bd42f25e449c..9b1feb03069d 100644
--- a/include/drm/drm_gem.h
+++ b/include/drm/drm_gem.h
@@ -405,6 +405,7 @@  int drm_gem_object_init(struct drm_device *dev,
 			struct drm_gem_object *obj, size_t size);
 void drm_gem_private_object_init(struct drm_device *dev,
 				 struct drm_gem_object *obj, size_t size);
+void drm_gem_private_object_fini(struct drm_gem_object *obj);
 void drm_gem_vm_open(struct vm_area_struct *vma);
 void drm_gem_vm_close(struct vm_area_struct *vma);
 int drm_gem_mmap_obj(struct drm_gem_object *obj, unsigned long obj_size,