diff mbox series

[v14,11/56] media: mediatek: jpeg: Use vb2_get_buffer() instead of directly access to buffers array

Message ID 20231031163104.112469-12-benjamin.gaignard@collabora.com
State New
Headers
Series Add DELETE_BUF ioctl |

Commit Message

Benjamin Gaignard Oct. 31, 2023, 4:30 p.m. UTC 
  Use vb2_get_buffer() instead of direct access to the vb2_queue bufs array.
This allows us to change the type of the bufs in the future.
After each call to vb2_get_buffer() we need to be sure that we get
a valid pointer so check the return value of all of them.

Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
CC: Bin Liu <bin.liu@mediatek.com>
CC: Matthias Brugger <matthias.bgg@gmail.com>
---
 drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

Comments

Andrzej Pietrasiewicz Nov. 8, 2023, 5 p.m. UTC | #1 
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_buffer() instead of direct access to the vb2_queue bufs array.
> This allows us to change the type of the bufs in the future.
> After each call to vb2_get_buffer() we need to be sure that we get
> a valid pointer so check the return value of all of them.
> 
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>

Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>

> CC: Bin Liu <bin.liu@mediatek.com>
> CC: Matthias Brugger <matthias.bgg@gmail.com>
> ---
>   drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c | 7 +++----
>   1 file changed, 3 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c b/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c
> index 7194f88edc0f..73a063b1569b 100644
> --- a/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c
> +++ b/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c
> @@ -598,12 +598,11 @@ static int mtk_jpeg_qbuf(struct file *file, void *priv, struct v4l2_buffer *buf)
>   		goto end;
>   
>   	vq = v4l2_m2m_get_vq(fh->m2m_ctx, buf->type);
> -	if (buf->index >= vq->num_buffers) {
> -		dev_err(ctx->jpeg->dev, "buffer index out of range\n");
> +	vb = vb2_get_buffer(vq, buf->index);
> +	if (!vb) {
> +		dev_err(ctx->jpeg->dev, "buffer not found\n");
>   		return -EINVAL;
>   	}
> -
> -	vb = vq->bufs[buf->index];
>   	jpeg_src_buf = mtk_jpeg_vb2_to_srcbuf(vb);
>   	jpeg_src_buf->bs_size = buf->m.planes[0].bytesused;
>
diff mbox series

Patch

diff --git a/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c b/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c
index 7194f88edc0f..73a063b1569b 100644
--- a/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c
+++ b/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c
@@ -598,12 +598,11 @@  static int mtk_jpeg_qbuf(struct file *file, void *priv, struct v4l2_buffer *buf)
 		goto end;
 
 	vq = v4l2_m2m_get_vq(fh->m2m_ctx, buf->type);
-	if (buf->index >= vq->num_buffers) {
-		dev_err(ctx->jpeg->dev, "buffer index out of range\n");
+	vb = vb2_get_buffer(vq, buf->index);
+	if (!vb) {
+		dev_err(ctx->jpeg->dev, "buffer not found\n");
 		return -EINVAL;
 	}
-
-	vb = vq->bufs[buf->index];
 	jpeg_src_buf = mtk_jpeg_vb2_to_srcbuf(vb);
 	jpeg_src_buf->bs_size = buf->m.planes[0].bytesused;