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SubjectRe: [PATCH v2 6/7] media: mtk-vcodec: don't check return val of mtk_venc_get_q_data
On Wed, Nov 17, 2021 at 10:07 PM Dafna Hirschfeld
<dafna.hirschfeld@collabora.com> wrote:
>
> The function mtk_venc_get_q_data always returns a reference
> so there is no need to check if the return value is null.
> In addition move the q_data initialization to the declaration
>
> Signed-off-by: Dafna Hirschfeld <dafna.hirschfeld@collabora.com>

Reviewed-by: Alexandre Courbot <acourbot@chromium.org>


> ---
> .../platform/mtk-vcodec/mtk_vcodec_enc.c | 39 ++++---------------
> 1 file changed, 7 insertions(+), 32 deletions(-)
>
> diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc.c b/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc.c
> index be28f2401839..5caaeb4773ca 100644
> --- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc.c
> +++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc.c
> @@ -399,7 +399,7 @@ static int vidioc_venc_s_fmt_cap(struct file *file, void *priv,
> struct mtk_vcodec_ctx *ctx = fh_to_ctx(priv);
> const struct mtk_vcodec_enc_pdata *pdata = ctx->dev->venc_pdata;
> struct vb2_queue *vq;
> - struct mtk_q_data *q_data;
> + struct mtk_q_data *q_data = mtk_venc_get_q_data(ctx, f->type);
> int i, ret;
> const struct mtk_video_fmt *fmt;
>
> @@ -414,12 +414,6 @@ static int vidioc_venc_s_fmt_cap(struct file *file, void *priv,
> return -EBUSY;
> }
>
> - q_data = mtk_venc_get_q_data(ctx, f->type);
> - if (!q_data) {
> - mtk_v4l2_err("fail to get q data");
> - return -EINVAL;
> - }
> -
> fmt = mtk_venc_find_format(f->fmt.pix.pixelformat, pdata);
> if (!fmt) {
> fmt = &ctx->dev->venc_pdata->capture_formats[0];
> @@ -460,7 +454,7 @@ static int vidioc_venc_s_fmt_out(struct file *file, void *priv,
> struct mtk_vcodec_ctx *ctx = fh_to_ctx(priv);
> const struct mtk_vcodec_enc_pdata *pdata = ctx->dev->venc_pdata;
> struct vb2_queue *vq;
> - struct mtk_q_data *q_data;
> + struct mtk_q_data *q_data = mtk_venc_get_q_data(ctx, f->type);
> int ret, i;
> const struct mtk_video_fmt *fmt;
>
> @@ -475,12 +469,6 @@ static int vidioc_venc_s_fmt_out(struct file *file, void *priv,
> return -EBUSY;
> }
>
> - q_data = mtk_venc_get_q_data(ctx, f->type);
> - if (!q_data) {
> - mtk_v4l2_err("fail to get q data");
> - return -EINVAL;
> - }
> -
> fmt = mtk_venc_find_format(f->fmt.pix.pixelformat, pdata);
> if (!fmt) {
> fmt = &ctx->dev->venc_pdata->output_formats[0];
> @@ -520,14 +508,13 @@ static int vidioc_venc_g_fmt(struct file *file, void *priv,
> struct v4l2_pix_format_mplane *pix = &f->fmt.pix_mp;
> struct mtk_vcodec_ctx *ctx = fh_to_ctx(priv);
> struct vb2_queue *vq;
> - struct mtk_q_data *q_data;
> + struct mtk_q_data *q_data = mtk_venc_get_q_data(ctx, f->type);
> int i;
>
> vq = v4l2_m2m_get_vq(ctx->m2m_ctx, f->type);
> if (!vq)
> return -EINVAL;
>
> - q_data = mtk_venc_get_q_data(ctx, f->type);
>
> pix->width = q_data->coded_width;
> pix->height = q_data->coded_height;
> @@ -596,15 +583,11 @@ static int vidioc_venc_g_selection(struct file *file, void *priv,
> struct v4l2_selection *s)
> {
> struct mtk_vcodec_ctx *ctx = fh_to_ctx(priv);
> - struct mtk_q_data *q_data;
> + struct mtk_q_data *q_data = mtk_venc_get_q_data(ctx, s->type);
>
> if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
> return -EINVAL;
>
> - q_data = mtk_venc_get_q_data(ctx, s->type);
> - if (!q_data)
> - return -EINVAL;
> -
> switch (s->target) {
> case V4L2_SEL_TGT_CROP_DEFAULT:
> case V4L2_SEL_TGT_CROP_BOUNDS:
> @@ -630,15 +613,11 @@ static int vidioc_venc_s_selection(struct file *file, void *priv,
> struct v4l2_selection *s)
> {
> struct mtk_vcodec_ctx *ctx = fh_to_ctx(priv);
> - struct mtk_q_data *q_data;
> + struct mtk_q_data *q_data = mtk_venc_get_q_data(ctx, s->type);
>
> if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
> return -EINVAL;
>
> - q_data = mtk_venc_get_q_data(ctx, s->type);
> - if (!q_data)
> - return -EINVAL;
> -
> switch (s->target) {
> case V4L2_SEL_TGT_CROP:
> /* Only support crop from (0,0) */
> @@ -805,11 +784,9 @@ static int vb2ops_venc_queue_setup(struct vb2_queue *vq,
> struct device *alloc_devs[])
> {
> struct mtk_vcodec_ctx *ctx = vb2_get_drv_priv(vq);
> - struct mtk_q_data *q_data;
> + struct mtk_q_data *q_data = mtk_venc_get_q_data(ctx, vq->type);
> unsigned int i;
>
> - q_data = mtk_venc_get_q_data(ctx, vq->type);
> -
> if (q_data == NULL)
> return -EINVAL;
>
> @@ -829,11 +806,9 @@ static int vb2ops_venc_queue_setup(struct vb2_queue *vq,
> static int vb2ops_venc_buf_prepare(struct vb2_buffer *vb)
> {
> struct mtk_vcodec_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
> - struct mtk_q_data *q_data;
> + struct mtk_q_data *q_data = mtk_venc_get_q_data(ctx, vb->vb2_queue->type);
> int i;
>
> - q_data = mtk_venc_get_q_data(ctx, vb->vb2_queue->type);
> -
> for (i = 0; i < q_data->fmt->num_planes; i++) {
> if (vb2_plane_size(vb, i) < q_data->sizeimage[i]) {
> mtk_v4l2_err("data will not fit into plane %d (%lu < %d)",
> --
> 2.17.1
>

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