Re: [PATCH v2 01/50] video: hdmi: Change return type of hdmi_avi_infoframe_init() to void

[Boris Brezillon <boris.brezillon@collabora.com>]

On Tue, 20 Aug 2019 04:16:32 +0300
Laurent Pinchart <laurent.pinchart@ideasonboard.com> wrote:

> The hdmi_avi_infoframe_init() never needs to return an error, change its
> return type to void.
> 
> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
> Reviewed-by: Andrzej Hajda <a.hajda@samsung.com>

Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>

> ---
> Changes since v1:
> 
> - Removed documentation of the return value
> 
> Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
> ---
>  drivers/gpu/drm/drm_edid.c |  5 +----
>  drivers/video/hdmi.c       | 11 ++---------
>  include/linux/hdmi.h       |  2 +-
>  3 files changed, 4 insertions(+), 14 deletions(-)
> 
> diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
> index 82a4ceed3fcf..86ddb67c1e8a 100644
> --- a/drivers/gpu/drm/drm_edid.c
> +++ b/drivers/gpu/drm/drm_edid.c
> @@ -5083,14 +5083,11 @@ drm_hdmi_avi_infoframe_from_display_mode(struct hdmi_avi_infoframe *frame,
>  					 const struct drm_display_mode *mode)
>  {
>  	enum hdmi_picture_aspect picture_aspect;
> -	int err;
>  
>  	if (!frame || !mode)
>  		return -EINVAL;
>  
> -	err = hdmi_avi_infoframe_init(frame);
> -	if (err < 0)
> -		return err;
> +	hdmi_avi_infoframe_init(frame);
>  
>  	if (mode->flags & DRM_MODE_FLAG_DBLCLK)
>  		frame->pixel_repeat = 1;
> diff --git a/drivers/video/hdmi.c b/drivers/video/hdmi.c
> index b939bc28d886..ff4d09592602 100644
> --- a/drivers/video/hdmi.c
> +++ b/drivers/video/hdmi.c
> @@ -53,18 +53,14 @@ static void hdmi_infoframe_set_checksum(void *buffer, size_t size)
>  /**
>   * hdmi_avi_infoframe_init() - initialize an HDMI AVI infoframe
>   * @frame: HDMI AVI infoframe
> - *
> - * Returns 0 on success or a negative error code on failure.
>   */
> -int hdmi_avi_infoframe_init(struct hdmi_avi_infoframe *frame)
> +void hdmi_avi_infoframe_init(struct hdmi_avi_infoframe *frame)
>  {
>  	memset(frame, 0, sizeof(*frame));
>  
>  	frame->type = HDMI_INFOFRAME_TYPE_AVI;
>  	frame->version = 2;
>  	frame->length = HDMI_AVI_INFOFRAME_SIZE;
> -
> -	return 0;
>  }
>  EXPORT_SYMBOL(hdmi_avi_infoframe_init);
>  
> @@ -1553,7 +1549,6 @@ static int hdmi_avi_infoframe_unpack(struct hdmi_avi_infoframe *frame,
>  				     const void *buffer, size_t size)
>  {
>  	const u8 *ptr = buffer;
> -	int ret;
>  
>  	if (size < HDMI_INFOFRAME_SIZE(AVI))
>  		return -EINVAL;
> @@ -1566,9 +1561,7 @@ static int hdmi_avi_infoframe_unpack(struct hdmi_avi_infoframe *frame,
>  	if (hdmi_infoframe_checksum(buffer, HDMI_INFOFRAME_SIZE(AVI)) != 0)
>  		return -EINVAL;
>  
> -	ret = hdmi_avi_infoframe_init(frame);
> -	if (ret)
> -		return ret;
> +	hdmi_avi_infoframe_init(frame);
>  
>  	ptr += HDMI_INFOFRAME_HEADER_SIZE;
>  
> diff --git a/include/linux/hdmi.h b/include/linux/hdmi.h
> index 9918a6c910c5..9613d796cfb1 100644
> --- a/include/linux/hdmi.h
> +++ b/include/linux/hdmi.h
> @@ -207,7 +207,7 @@ struct hdmi_drm_infoframe {
>  	u16 max_fall;
>  };
>  
> -int hdmi_avi_infoframe_init(struct hdmi_avi_infoframe *frame);
> +void hdmi_avi_infoframe_init(struct hdmi_avi_infoframe *frame);
>  ssize_t hdmi_avi_infoframe_pack(struct hdmi_avi_infoframe *frame, void *buffer,
>  				size_t size);
>  ssize_t hdmi_avi_infoframe_pack_only(const struct hdmi_avi_infoframe *frame,

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