Hi Philipp,

A small comment inline.

Best wishes,
-- 
Kamil Debski
Linux Kernel Developer
Samsung R&D Institute Poland


> -----Original Message-----
> From: linux-media-ow...@vger.kernel.org [mailto:linux-media-
> ow...@vger.kernel.org] On Behalf Of Philipp Zabel
> Sent: Monday, September 30, 2013 3:35 PM
> To: linux-media@vger.kernel.org
> Cc: Mauro Carvalho Chehab; Kamil Debski; Javier Martin; Hans Verkuil;
> ker...@pengutronix.de; Philipp Zabel
> Subject: [PATCH v2 07/10] [media] coda: prefix v4l2_ioctl_ops with
> coda_ instead of vidioc_
> 
> Moving the ioctl handler callbacks into the coda namespace helps
> tremendously to make sense of backtraces.
> 
> Signed-off-by: Philipp Zabel <p.za...@pengutronix.de>
> ---
> Changes since v1:
>  - Use coda_ instead of coda_vidioc_ prefix
> ---
>  drivers/media/platform/coda.c | 123 +++++++++++++++++++++-------------
> --------
>  1 file changed, 63 insertions(+), 60 deletions(-)
> 
> diff --git a/drivers/media/platform/coda.c
> b/drivers/media/platform/coda.c index 82049f8..6286133 100644
> --- a/drivers/media/platform/coda.c
> +++ b/drivers/media/platform/coda.c
> @@ -412,8 +412,8 @@ static char *coda_product_name(int product)
>  /*
>   * V4L2 ioctl() operations.
>   */
> -static int vidioc_querycap(struct file *file, void *priv,
> -                        struct v4l2_capability *cap)
> +static int coda_querycap(struct file *file, void *priv,
> +                      struct v4l2_capability *cap)
>  {
>       struct coda_ctx *ctx = fh_to_ctx(priv);
> 
> @@ -484,8 +484,8 @@ static int enum_fmt(void *priv, struct v4l2_fmtdesc
> *f,
>       return -EINVAL;
>  }
> 
> -static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
> -                                struct v4l2_fmtdesc *f)
> +static int coda_enum_fmt_vid_cap(struct file *file, void *priv,
> +                              struct v4l2_fmtdesc *f)
>  {
>       struct coda_ctx *ctx = fh_to_ctx(priv);
>       struct vb2_queue *src_vq;
> @@ -503,13 +503,14 @@ static int vidioc_enum_fmt_vid_cap(struct file
> *file, void *priv,
>       return enum_fmt(priv, f, V4L2_BUF_TYPE_VIDEO_CAPTURE, 0);  }
> 
> -static int vidioc_enum_fmt_vid_out(struct file *file, void *priv,
> -                                struct v4l2_fmtdesc *f)
> +static int coda_enum_fmt_vid_out(struct file *file, void *priv,
> +                              struct v4l2_fmtdesc *f)
>  {
>       return enum_fmt(priv, f, V4L2_BUF_TYPE_VIDEO_OUTPUT, 0);  }
> 
> -static int vidioc_g_fmt(struct file *file, void *priv, struct
> v4l2_format *f)
> +static int coda_g_fmt(struct file *file, void *priv,
> +                   struct v4l2_format *f)
>  {
>       struct vb2_queue *vq;
>       struct coda_q_data *q_data;
> @@ -536,7 +537,7 @@ static int vidioc_g_fmt(struct file *file, void
> *priv, struct v4l2_format *f)
>       return 0;
>  }
> 
> -static int vidioc_try_fmt(struct coda_codec *codec, struct v4l2_format
> *f)
> +static int coda_try_fmt(struct coda_codec *codec, struct v4l2_format
> +*f)
>  {
>       unsigned int max_w, max_h;
>       enum v4l2_field field;
> @@ -575,8 +576,8 @@ static int vidioc_try_fmt(struct coda_codec *codec,
> struct v4l2_format *f)
>       return 0;
>  }
> 
> -static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
> -                               struct v4l2_format *f)
> +static int coda_try_fmt_vid_cap(struct file *file, void *priv,
> +                             struct v4l2_format *f)
>  {
>       struct coda_ctx *ctx = fh_to_ctx(priv);
>       struct coda_codec *codec;
> @@ -604,7 +605,7 @@ static int vidioc_try_fmt_vid_cap(struct file *file,
> void *priv,
> 
>       f->fmt.pix.colorspace = ctx->colorspace;
> 
> -     ret = vidioc_try_fmt(codec, f);
> +     ret = coda_try_fmt(codec, f);
>       if (ret < 0)
>               return ret;
> 
> @@ -620,8 +621,8 @@ static int vidioc_try_fmt_vid_cap(struct file *file,
> void *priv,
>       return 0;
>  }
> 
> -static int vidioc_try_fmt_vid_out(struct file *file, void *priv,
> -                               struct v4l2_format *f)
> +static int coda_try_fmt_vid_out(struct file *file, void *priv,
> +                             struct v4l2_format *f)
>  {
>       struct coda_ctx *ctx = fh_to_ctx(priv);
>       struct coda_codec *codec;
> @@ -633,10 +634,10 @@ static int vidioc_try_fmt_vid_out(struct file
> *file, void *priv,
>       if (!f->fmt.pix.colorspace)
>               f->fmt.pix.colorspace = V4L2_COLORSPACE_REC709;
> 
> -     return vidioc_try_fmt(codec, f);
> +     return coda_try_fmt(codec, f);
>  }
> 
> -static int vidioc_s_fmt(struct coda_ctx *ctx, struct v4l2_format *f)
> +static int coda_s_fmt(struct coda_ctx *ctx, struct v4l2_format *f)
>  {
>       struct coda_q_data *q_data;
>       struct vb2_queue *vq;
> @@ -666,61 +667,62 @@ static int vidioc_s_fmt(struct coda_ctx *ctx,
> struct v4l2_format *f)
>       return 0;
>  }
> 
> -static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
> -                             struct v4l2_format *f)
> +static int coda_s_fmt_vid_cap(struct file *file, void *priv,
> +                           struct v4l2_format *f)
>  {
>       struct coda_ctx *ctx = fh_to_ctx(priv);
>       int ret;
> 
> -     ret = vidioc_try_fmt_vid_cap(file, priv, f);
> +     ret = coda_try_fmt_vid_cap(file, priv, f);
>       if (ret)
>               return ret;
> 
> -     return vidioc_s_fmt(ctx, f);
> +     return coda_s_fmt(ctx, f);
>  }
> 
> -static int vidioc_s_fmt_vid_out(struct file *file, void *priv,
> -                             struct v4l2_format *f)
> +static int coda_s_fmt_vid_out(struct file *file, void *priv,
> +                           struct v4l2_format *f)
>  {
>       struct coda_ctx *ctx = fh_to_ctx(priv);
>       int ret;
> 
> -     ret = vidioc_try_fmt_vid_out(file, priv, f);
> +     ret = coda_try_fmt_vid_out(file, priv, f);
>       if (ret)
>               return ret;
> 
> -     ret = vidioc_s_fmt(ctx, f);
> +     ret = coda_s_fmt(ctx, f);
>       if (ret)
>               ctx->colorspace = f->fmt.pix.colorspace;
> 
>       return ret;
>  }
> 
> -static int vidioc_reqbufs(struct file *file, void *priv,
> -                       struct v4l2_requestbuffers *reqbufs)
> +static int coda_reqbufs(struct file *file, void *priv,
> +                     struct v4l2_requestbuffers *reqbufs)
>  {
>       struct coda_ctx *ctx = fh_to_ctx(priv);
> 
>       return v4l2_m2m_reqbufs(file, ctx->m2m_ctx, reqbufs);  }
> 
> -static int vidioc_querybuf(struct file *file, void *priv,
> -                        struct v4l2_buffer *buf)
> +static int coda_querybuf(struct file *file, void *priv,
> +                      struct v4l2_buffer *buf)
>  {
>       struct coda_ctx *ctx = fh_to_ctx(priv);
> 
>       return v4l2_m2m_querybuf(file, ctx->m2m_ctx, buf);  }
> 
> -static int vidioc_qbuf(struct file *file, void *priv, struct
> v4l2_buffer *buf)
> +static int coda_qbuf(struct file *file, void *priv,
> +                  struct v4l2_buffer *buf)
>  {
>       struct coda_ctx *ctx = fh_to_ctx(priv);
> 
>       return v4l2_m2m_qbuf(file, ctx->m2m_ctx, buf);  }
> 
> -static int vidioc_expbuf(struct file *file, void *priv,
> -                      struct v4l2_exportbuffer *eb)
> +static int coda_expbuf(struct file *file, void *priv,
> +                    struct v4l2_exportbuffer *eb)
>  {
>       struct coda_ctx *ctx = fh_to_ctx(priv);
> 
> @@ -738,7 +740,8 @@ static bool coda_buf_is_end_of_stream(struct
> coda_ctx *ctx,
>               (buf->sequence == (ctx->qsequence - 1)));  }
> 
> -static int vidioc_dqbuf(struct file *file, void *priv, struct
> v4l2_buffer *buf)
> +static int coda_dqbuf(struct file *file, void *priv,
> +                   struct v4l2_buffer *buf)
>  {
>       struct coda_ctx *ctx = fh_to_ctx(priv);
>       int ret;
> @@ -758,24 +761,24 @@ static int vidioc_dqbuf(struct file *file, void
> *priv, struct v4l2_buffer *buf)
>       return ret;
>  }
> 
> -static int vidioc_create_bufs(struct file *file, void *priv,
> -                           struct v4l2_create_buffers *create)
> +static int coda_create_bufs(struct file *file, void *priv,
> +                         struct v4l2_create_buffers *create)
>  {
>       struct coda_ctx *ctx = fh_to_ctx(priv);
> 
>       return v4l2_m2m_create_bufs(file, ctx->m2m_ctx, create);  }
> 
> -static int vidioc_streamon(struct file *file, void *priv,
> -                        enum v4l2_buf_type type)
> +static int coda_streamon(struct file *file, void *priv,
> +                      enum v4l2_buf_type type)
>  {
>       struct coda_ctx *ctx = fh_to_ctx(priv);
> 
>       return v4l2_m2m_streamon(file, ctx->m2m_ctx, type);  }
> 
> -static int vidioc_streamoff(struct file *file, void *priv,
> -                         enum v4l2_buf_type type)
> +static int coda_streamoff(struct file *file, void *priv,
> +                       enum v4l2_buf_type type)
>  {
>       struct coda_ctx *ctx = fh_to_ctx(priv);
>       int ret;
> @@ -792,8 +795,8 @@ static int vidioc_streamoff(struct file *file, void
> *priv,
>       return ret;
>  }
> 
> -static int vidioc_decoder_cmd(struct file *file, void *fh,
> -                           struct v4l2_decoder_cmd *dc)
> +static int coda_decoder_cmd(struct file *file, void *fh,
> +                                struct v4l2_decoder_cmd *dc)
>  {
>       struct coda_ctx *ctx = fh_to_ctx(fh);
> 
> @@ -816,8 +819,8 @@ static int vidioc_decoder_cmd(struct file *file,
> void *fh,
>       return 0;
>  }
> 
> -static int vidioc_subscribe_event(struct v4l2_fh *fh,
> -                               const struct v4l2_event_subscription *sub)
> +static int coda_subscribe_event(struct v4l2_fh *fh,
> +                             const struct v4l2_event_subscription *sub)

Here checkpatch.pl reports a whitespace error, I will correct it, but next
time please ensure that it is clean.

>  {
>       switch (sub->type) {
>       case V4L2_EVENT_EOS:
> @@ -828,32 +831,32 @@ static int vidioc_subscribe_event(struct v4l2_fh
> *fh,  }
> 
>  static const struct v4l2_ioctl_ops coda_ioctl_ops = {
> -     .vidioc_querycap        = vidioc_querycap,
> +     .vidioc_querycap        = coda_querycap,
> 
> -     .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
> -     .vidioc_g_fmt_vid_cap   = vidioc_g_fmt,
> -     .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
> -     .vidioc_s_fmt_vid_cap   = vidioc_s_fmt_vid_cap,
> +     .vidioc_enum_fmt_vid_cap = coda_enum_fmt_vid_cap,
> +     .vidioc_g_fmt_vid_cap   = coda_g_fmt,
> +     .vidioc_try_fmt_vid_cap = coda_try_fmt_vid_cap,
> +     .vidioc_s_fmt_vid_cap   = coda_s_fmt_vid_cap,
> 
> -     .vidioc_enum_fmt_vid_out = vidioc_enum_fmt_vid_out,
> -     .vidioc_g_fmt_vid_out   = vidioc_g_fmt,
> -     .vidioc_try_fmt_vid_out = vidioc_try_fmt_vid_out,
> -     .vidioc_s_fmt_vid_out   = vidioc_s_fmt_vid_out,
> +     .vidioc_enum_fmt_vid_out = coda_enum_fmt_vid_out,
> +     .vidioc_g_fmt_vid_out   = coda_g_fmt,
> +     .vidioc_try_fmt_vid_out = coda_try_fmt_vid_out,
> +     .vidioc_s_fmt_vid_out   = coda_s_fmt_vid_out,
> 
> -     .vidioc_reqbufs         = vidioc_reqbufs,
> -     .vidioc_querybuf        = vidioc_querybuf,
> +     .vidioc_reqbufs         = coda_reqbufs,
> +     .vidioc_querybuf        = coda_querybuf,
> 
> -     .vidioc_qbuf            = vidioc_qbuf,
> -     .vidioc_expbuf          = vidioc_expbuf,
> -     .vidioc_dqbuf           = vidioc_dqbuf,
> -     .vidioc_create_bufs     = vidioc_create_bufs,
> +     .vidioc_qbuf            = coda_qbuf,
> +     .vidioc_expbuf          = coda_expbuf,
> +     .vidioc_dqbuf           = coda_dqbuf,
> +     .vidioc_create_bufs     = coda_create_bufs,
> 
> -     .vidioc_streamon        = vidioc_streamon,
> -     .vidioc_streamoff       = vidioc_streamoff,
> +     .vidioc_streamon        = coda_streamon,
> +     .vidioc_streamoff       = coda_streamoff,
> 
> -     .vidioc_decoder_cmd     = vidioc_decoder_cmd,
> +     .vidioc_decoder_cmd     = coda_decoder_cmd,
> 
> -     .vidioc_subscribe_event = vidioc_subscribe_event,
> +     .vidioc_subscribe_event = coda_subscribe_event,
>       .vidioc_unsubscribe_event = v4l2_event_unsubscribe,  };
> 
> --
> 1.8.4.rc3
> 
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