diff mbox series

[v7,18/49] media: Remove duplicated index vs q->num_buffers check

Message ID 20230914133323.198857-19-benjamin.gaignard@collabora.com
State New
Headers show
Series Add DELETE_BUF ioctl | expand

Commit Message

Benjamin Gaignard Sept. 14, 2023, 1:32 p.m. UTC
vb2_get_buffer() already check if the requested index is valid.
Stop duplicating this kind of check everywhere.

Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
---
 drivers/media/common/videobuf2/videobuf2-core.c |  8 ++++++++
 drivers/media/common/videobuf2/videobuf2-v4l2.c | 13 -------------
 include/media/videobuf2-core.h                  |  8 +-------
 3 files changed, 9 insertions(+), 20 deletions(-)

Comments

Hans Verkuil Sept. 19, 2023, 12:21 p.m. UTC | #1
On 14/09/2023 15:32, Benjamin Gaignard wrote:
> vb2_get_buffer() already check if the requested index is valid.

typo: check -> checks

> Stop duplicating this kind of check everywhere.

Also mention you moved it from the header to videobuf2-core.c.

Although I am not sure if it belongs in this patch, it is not
needed for this. I think it is better to move it either into a
separate patch, or move it to the patch where it is really needed.

> 
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
> ---
>  drivers/media/common/videobuf2/videobuf2-core.c |  8 ++++++++
>  drivers/media/common/videobuf2/videobuf2-v4l2.c | 13 -------------
>  include/media/videobuf2-core.h                  |  8 +-------
>  3 files changed, 9 insertions(+), 20 deletions(-)
> 
> diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
> index ee4df7c68397..2add7a6795e7 100644
> --- a/drivers/media/common/videobuf2/videobuf2-core.c
> +++ b/drivers/media/common/videobuf2/videobuf2-core.c
> @@ -660,6 +660,14 @@ static void __vb2_queue_free(struct vb2_queue *q, unsigned int buffers)
>  	}
>  }
>  
> +struct vb2_buffer *vb2_get_buffer(struct vb2_queue *q, unsigned int index)
> +{
> +	if (index < q->num_buffers)
> +		return q->bufs[index];
> +	return NULL;
> +}
> +EXPORT_SYMBOL_GPL(vb2_get_buffer);
> +
>  bool vb2_buffer_in_use(struct vb2_queue *q, struct vb2_buffer *vb)
>  {
>  	unsigned int plane;
> diff --git a/drivers/media/common/videobuf2/videobuf2-v4l2.c b/drivers/media/common/videobuf2/videobuf2-v4l2.c
> index 87c2d5916960..f10b70d8e66a 100644
> --- a/drivers/media/common/videobuf2/videobuf2-v4l2.c
> +++ b/drivers/media/common/videobuf2/videobuf2-v4l2.c
> @@ -378,11 +378,6 @@ static int vb2_queue_or_prepare_buf(struct vb2_queue *q, struct media_device *md
>  		return -EINVAL;
>  	}
>  
> -	if (b->index >= q->num_buffers) {
> -		dprintk(q, 1, "%s: buffer index out of range\n", opname);
> -		return -EINVAL;
> -	}
> -
>  	vb = vb2_get_buffer(q, b->index);
>  	if (!vb) {
>  		dprintk(q, 1, "%s: buffer is NULL\n", opname);
> @@ -829,10 +824,6 @@ int vb2_qbuf(struct vb2_queue *q, struct media_device *mdev,
>  		return -EBUSY;
>  	}
>  
> -	if (b->index >= q->num_buffers) {
> -		dprintk(q, 1, "buffer index out of range\n");
> -		return -EINVAL;
> -	}
>  	vb = vb2_get_buffer(q, b->index);
>  	if (!vb) {
>  		dprintk(q, 1, "can't find the requested buffer\n");
> @@ -904,10 +895,6 @@ int vb2_expbuf(struct vb2_queue *q, struct v4l2_exportbuffer *eb)
>  {
>  	struct vb2_buffer *vb;
>  
> -	if (eb->index >= q->num_buffers) {
> -		dprintk(q, 1, "buffer index out of range\n");
> -		return -EINVAL;
> -	}
>  	vb = vb2_get_buffer(q, eb->index);
>  	if (!vb) {
>  		dprintk(q, 1, "can't find the requested buffer\n");

This patch should be folded into 11/49. It is 11/49 that introduced these
duplicate messages, and it should have removed those directly.

Regards,

	Hans

> diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h
> index 97153c69583f..25ca395616a7 100644
> --- a/include/media/videobuf2-core.h
> +++ b/include/media/videobuf2-core.h
> @@ -1238,13 +1238,7 @@ static inline void vb2_clear_last_buffer_dequeued(struct vb2_queue *q)
>   * operation, so the buffer lifetime should be taken into
>   * consideration.
>   */
> -static inline struct vb2_buffer *vb2_get_buffer(struct vb2_queue *q,
> -						unsigned int index)
> -{
> -	if (index < q->num_buffers)
> -		return q->bufs[index];
> -	return NULL;
> -}
> +struct vb2_buffer *vb2_get_buffer(struct vb2_queue *q, unsigned int index);
>  
>  /*
>   * The following functions are not part of the vb2 core API, but are useful
diff mbox series

Patch

diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
index ee4df7c68397..2add7a6795e7 100644
--- a/drivers/media/common/videobuf2/videobuf2-core.c
+++ b/drivers/media/common/videobuf2/videobuf2-core.c
@@ -660,6 +660,14 @@  static void __vb2_queue_free(struct vb2_queue *q, unsigned int buffers)
 	}
 }
 
+struct vb2_buffer *vb2_get_buffer(struct vb2_queue *q, unsigned int index)
+{
+	if (index < q->num_buffers)
+		return q->bufs[index];
+	return NULL;
+}
+EXPORT_SYMBOL_GPL(vb2_get_buffer);
+
 bool vb2_buffer_in_use(struct vb2_queue *q, struct vb2_buffer *vb)
 {
 	unsigned int plane;
diff --git a/drivers/media/common/videobuf2/videobuf2-v4l2.c b/drivers/media/common/videobuf2/videobuf2-v4l2.c
index 87c2d5916960..f10b70d8e66a 100644
--- a/drivers/media/common/videobuf2/videobuf2-v4l2.c
+++ b/drivers/media/common/videobuf2/videobuf2-v4l2.c
@@ -378,11 +378,6 @@  static int vb2_queue_or_prepare_buf(struct vb2_queue *q, struct media_device *md
 		return -EINVAL;
 	}
 
-	if (b->index >= q->num_buffers) {
-		dprintk(q, 1, "%s: buffer index out of range\n", opname);
-		return -EINVAL;
-	}
-
 	vb = vb2_get_buffer(q, b->index);
 	if (!vb) {
 		dprintk(q, 1, "%s: buffer is NULL\n", opname);
@@ -829,10 +824,6 @@  int vb2_qbuf(struct vb2_queue *q, struct media_device *mdev,
 		return -EBUSY;
 	}
 
-	if (b->index >= q->num_buffers) {
-		dprintk(q, 1, "buffer index out of range\n");
-		return -EINVAL;
-	}
 	vb = vb2_get_buffer(q, b->index);
 	if (!vb) {
 		dprintk(q, 1, "can't find the requested buffer\n");
@@ -904,10 +895,6 @@  int vb2_expbuf(struct vb2_queue *q, struct v4l2_exportbuffer *eb)
 {
 	struct vb2_buffer *vb;
 
-	if (eb->index >= q->num_buffers) {
-		dprintk(q, 1, "buffer index out of range\n");
-		return -EINVAL;
-	}
 	vb = vb2_get_buffer(q, eb->index);
 	if (!vb) {
 		dprintk(q, 1, "can't find the requested buffer\n");
diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h
index 97153c69583f..25ca395616a7 100644
--- a/include/media/videobuf2-core.h
+++ b/include/media/videobuf2-core.h
@@ -1238,13 +1238,7 @@  static inline void vb2_clear_last_buffer_dequeued(struct vb2_queue *q)
  * operation, so the buffer lifetime should be taken into
  * consideration.
  */
-static inline struct vb2_buffer *vb2_get_buffer(struct vb2_queue *q,
-						unsigned int index)
-{
-	if (index < q->num_buffers)
-		return q->bufs[index];
-	return NULL;
-}
+struct vb2_buffer *vb2_get_buffer(struct vb2_queue *q, unsigned int index);
 
 /*
  * The following functions are not part of the vb2 core API, but are useful