Re: [PATCH v8 10/14] media: platform: Delete redundant code for improving code quality

Tomasz Figa
2020-05-21T15:50:05Z

Hi Xia,

On Fri, Apr 03, 2020 at 05:40:29PM +0800, Xia Jiang wrote:
> Delete unused member variables annotation.
> Delete unused variable definition.
> Delete redundant log print, because V4L2 debug logs already print it.
>
> Signed-off-by: Xia Jiang <xia.jiang@mediatek.com>
> ---
> v8: no changes
> ---
> drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c | 16 ++--------------
> drivers/media/platform/mtk-jpeg/mtk_jpeg_core.h | 5 +++--
> 2 files changed, 5 insertions(+), 16 deletions(-)
>

Thank you for the patch. Please see my comments inline.

> diff --git a/drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c b/drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c
> index 4e64046a6854..9e59b9a51ef0 100644
> --- a/drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c
> +++ b/drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c
> @@ -182,7 +182,6 @@ static int mtk_jpeg_try_fmt_mplane(struct v4l2_format *f,
> struct mtk_jpeg_ctx *ctx, int q_type)
> {
> struct v4l2_pix_format_mplane *pix_mp = &f->fmt.pix_mp;
> - struct mtk_jpeg_dev *jpeg = ctx->jpeg;
> int i;
>
> memset(pix_mp->reserved, 0, sizeof(pix_mp->reserved));
> @@ -190,7 +189,7 @@ static int mtk_jpeg_try_fmt_mplane(struct v4l2_format *f,
>
> if (ctx->state != MTK_JPEG_INIT) {
> mtk_jpeg_adjust_fmt_mplane(ctx, f);
> - goto end;
> + return 0;
> }
>
> pix_mp->num_planes = fmt->colplanes;
> @@ -210,7 +209,7 @@ static int mtk_jpeg_try_fmt_mplane(struct v4l2_format *f,
> pfmt->sizeimage = round_up(pfmt->sizeimage, 128);
> if (pfmt->sizeimage == 0)
> pfmt->sizeimage = MTK_JPEG_DEFAULT_SIZEIMAGE;
> - goto end;
> + return 0;
> }
>
> /* type is MTK_JPEG_FMT_TYPE_CAPTURE */
> @@ -224,20 +223,9 @@ static int mtk_jpeg_try_fmt_mplane(struct v4l2_format *f,
> u32 stride = pix_mp->width * fmt->h_sample[i] / 4;
> u32 h = pix_mp->height * fmt->v_sample[i] / 4;
>
> - memset(pfmt->reserved, 0, sizeof(pfmt->reserved));

This change is not mentioned in the description. I'd suggest moving it
to a separate patch, because it's a functional change.

> pfmt->bytesperline = stride;
> pfmt->sizeimage = stride * h;
> }
> -end:
> - v4l2_dbg(2, debug, &jpeg->v4l2_dev, "wxh:%ux%u\n",
> - pix_mp->width, pix_mp->height);
> - for (i = 0; i < pix_mp->num_planes; i++) {
> - v4l2_dbg(2, debug, &jpeg->v4l2_dev,
> - "plane[%d] bpl=%u, size=%u\n",
> - i,
> - pix_mp->plane_fmt[i].bytesperline,
> - pix_mp->plane_fmt[i].sizeimage);
> - }
> return 0;
> }
>
> diff --git a/drivers/media/platform/mtk-jpeg/mtk_jpeg_core.h b/drivers/media/platform/mtk-jpeg/mtk_jpeg_core.h
> index 64a731261214..9bbd615b1067 100644
> --- a/drivers/media/platform/mtk-jpeg/mtk_jpeg_core.h
> +++ b/drivers/media/platform/mtk-jpeg/mtk_jpeg_core.h
> @@ -30,6 +30,9 @@
>
> #define MTK_JPEG_DEFAULT_SIZEIMAGE (1 * 1024 * 1024)
>
> +/**
> + * enum mtk_jpeg_ctx_state - contex state of jpeg

typo: s/contex/context/

But I'd rephrase it to "states of the context state machine".

> + */

Not mentioned in the description. Also, the documentation of an enum
should have descriptions for the values.

Best regards,
Tomasz