Re: [PATCH RFC] media: Rename media_entity_remote_source to media_entity_remote_pad

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On 01/22/2013 09:24 AM, Andrzej Hajda wrote:
Function media_entity_remote_source actually returns the remote pad to
the given one, regardless if this is the source or the sink pad.
Name media_entity_remote_pad is more adequate for this function.

It seems this patch had slipped through the cracks.

Laurent, would you have any comments on this patch ?

I might have rebased it on top of this series [1], once it is reviewed
and merged.

[1] http://www.spinics.net/lists/linux-media/msg63423.html

Regards,
Sylwester

Signed-off-by: Andrzej Hajda<a.hajda@xxxxxxxxxxx>
Signed-off-by: Kyungmin Park<kyungmin.park@xxxxxxxxxxx>
---
  Documentation/media-framework.txt                |    2 +-
  drivers/media/media-entity.c                     |   13 ++++++-------
  drivers/media/platform/omap3isp/isp.c            |    6 +++---
  drivers/media/platform/omap3isp/ispccdc.c        |    2 +-
  drivers/media/platform/omap3isp/ispccp2.c        |    2 +-
  drivers/media/platform/omap3isp/ispcsi2.c        |    2 +-
  drivers/media/platform/omap3isp/ispvideo.c       |    6 +++---
  drivers/media/platform/s3c-camif/camif-capture.c |    2 +-
  drivers/media/platform/s5p-fimc/fimc-capture.c   |    8 ++++----
  drivers/media/platform/s5p-fimc/fimc-lite.c      |    4 ++--
  drivers/media/platform/s5p-fimc/fimc-mdevice.c   |    2 +-
  drivers/staging/media/davinci_vpfe/vpfe_video.c  |   12 ++++++------
  include/media/media-entity.h                     |    2 +-
  13 files changed, 31 insertions(+), 32 deletions(-)

diff --git a/Documentation/media-framework.txt b/Documentation/media-framework.txt
index 8028754..e68744a 100644
--- a/Documentation/media-framework.txt
+++ b/Documentation/media-framework.txt
@@ -265,7 +265,7 @@ connected to another pad through an enabled link
  	media_entity_find_link(struct media_pad *source,
  			       struct media_pad *sink);

-	media_entity_remote_source(struct media_pad *pad);
+	media_entity_remote_pad(struct media_pad *pad);

  Refer to the kerneldoc documentation for more information.

diff --git a/drivers/media/media-entity.c b/drivers/media/media-entity.c
index e1cd132..0438209 100644
--- a/drivers/media/media-entity.c
+++ b/drivers/media/media-entity.c
@@ -560,17 +560,16 @@ media_entity_find_link(struct media_pad *source, struct media_pad *sink)
  EXPORT_SYMBOL_GPL(media_entity_find_link);

  /**
- * media_entity_remote_source - Find the source pad at the remote end of a link
- * @pad: Sink pad at the local end of the link
+ * media_entity_remote_pad - Find the pad at the remote end of a link
+ * @pad: Pad at the local end of the link
   *
- * Search for a remote source pad connected to the given sink pad by iterating
- * over all links originating or terminating at that pad until an enabled link
- * is found.
+ * Search for a remote pad connected to the given pad by iterating over all
+ * links originating or terminating at that pad until an enabled link is found.
   *
   * Return a pointer to the pad at the remote end of the first found enabled
   * link, or NULL if no enabled link has been found.
   */
-struct media_pad *media_entity_remote_source(struct media_pad *pad)
+struct media_pad *media_entity_remote_pad(struct media_pad *pad)
  {
  	unsigned int i;

@@ -590,4 +589,4 @@ struct media_pad *media_entity_remote_source(struct media_pad *pad)
  	return NULL;

  }
-EXPORT_SYMBOL_GPL(media_entity_remote_source);
+EXPORT_SYMBOL_GPL(media_entity_remote_pad);
diff --git a/drivers/media/platform/omap3isp/isp.c b/drivers/media/platform/omap3isp/isp.c
index a9f6de5..5bb1698 100644
--- a/drivers/media/platform/omap3isp/isp.c
+++ b/drivers/media/platform/omap3isp/isp.c
@@ -757,7 +757,7 @@ static int isp_pipeline_enable(struct isp_pipeline *pipe,
  		if (!(pad->flags&  MEDIA_PAD_FL_SINK))
  			break;

-		pad = media_entity_remote_source(pad);
+		pad = media_entity_remote_pad(pad);
  		if (pad == NULL ||
  		    media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
  			break;
@@ -847,7 +847,7 @@ static int isp_pipeline_disable(struct isp_pipeline *pipe)
  		if (!(pad->flags&  MEDIA_PAD_FL_SINK))
  			break;

-		pad = media_entity_remote_source(pad);
+		pad = media_entity_remote_pad(pad);
  		if (pad == NULL ||
  		    media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
  			break;
@@ -963,7 +963,7 @@ static int isp_pipeline_is_last(struct media_entity *me)
  	pipe = to_isp_pipeline(me);
  	if (pipe->stream_state == ISP_PIPELINE_STREAM_STOPPED)
  		return 0;
-	pad = media_entity_remote_source(&pipe->output->pad);
+	pad = media_entity_remote_pad(&pipe->output->pad);
  	return pad->entity == me;
  }

diff --git a/drivers/media/platform/omap3isp/ispccdc.c b/drivers/media/platform/omap3isp/ispccdc.c
index 60e60aa..907a205 100644
--- a/drivers/media/platform/omap3isp/ispccdc.c
+++ b/drivers/media/platform/omap3isp/ispccdc.c
@@ -1120,7 +1120,7 @@ static void ccdc_configure(struct isp_ccdc_device *ccdc)
  	u32 syn_mode;
  	u32 ccdc_pattern;

-	pad = media_entity_remote_source(&ccdc->pads[CCDC_PAD_SINK]);
+	pad = media_entity_remote_pad(&ccdc->pads[CCDC_PAD_SINK]);
  	sensor = media_entity_to_v4l2_subdev(pad->entity);
  	if (ccdc->input == CCDC_INPUT_PARALLEL)
  		pdata =&((struct isp_v4l2_subdevs_group *)sensor->host_priv)
diff --git a/drivers/media/platform/omap3isp/ispccp2.c b/drivers/media/platform/omap3isp/ispccp2.c
index 85f0de8..d134e60 100644
--- a/drivers/media/platform/omap3isp/ispccp2.c
+++ b/drivers/media/platform/omap3isp/ispccp2.c
@@ -360,7 +360,7 @@ static int ccp2_if_configure(struct isp_ccp2_device *ccp2)

  	ccp2_pwr_cfg(ccp2);

-	pad = media_entity_remote_source(&ccp2->pads[CCP2_PAD_SINK]);
+	pad = media_entity_remote_pad(&ccp2->pads[CCP2_PAD_SINK]);
  	sensor = media_entity_to_v4l2_subdev(pad->entity);
  	pdata = sensor->host_priv;

diff --git a/drivers/media/platform/omap3isp/ispcsi2.c b/drivers/media/platform/omap3isp/ispcsi2.c
index 783f4b0..6db245d 100644
--- a/drivers/media/platform/omap3isp/ispcsi2.c
+++ b/drivers/media/platform/omap3isp/ispcsi2.c
@@ -573,7 +573,7 @@ static int csi2_configure(struct isp_csi2_device *csi2)
  	if (csi2->contexts[0].enabled || csi2->ctrl.if_enable)
  		return -EBUSY;

-	pad = media_entity_remote_source(&csi2->pads[CSI2_PAD_SINK]);
+	pad = media_entity_remote_pad(&csi2->pads[CSI2_PAD_SINK]);
  	sensor = media_entity_to_v4l2_subdev(pad->entity);
  	pdata = sensor->host_priv;

diff --git a/drivers/media/platform/omap3isp/ispvideo.c b/drivers/media/platform/omap3isp/ispvideo.c
index e0d73a6..ed3e136 100644
--- a/drivers/media/platform/omap3isp/ispvideo.c
+++ b/drivers/media/platform/omap3isp/ispvideo.c
@@ -222,7 +222,7 @@ isp_video_remote_subdev(struct isp_video *video, u32 *pad)
  {
  	struct media_pad *remote;

-	remote = media_entity_remote_source(&video->pad);
+	remote = media_entity_remote_pad(&video->pad);

  	if (remote == NULL ||
  	    media_entity_type(remote->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
@@ -317,7 +317,7 @@ static int isp_video_validate_pipeline(struct isp_pipeline *pipe)
  		 * entity can be found, and stop checking the pipeline if the
  		 * source entity isn't a subdev.
  		 */
-		pad = media_entity_remote_source(pad);
+		pad = media_entity_remote_pad(pad);
  		if (pad == NULL)
  			return -EPIPE;

@@ -904,7 +904,7 @@ static int isp_video_check_external_subdevs(struct isp_video *video,
  			continue;

  		/* ISP entities have always sink pad == 0. Find source. */
-		source_pad = media_entity_remote_source(&ents[i]->pads[0]);
+		source_pad = media_entity_remote_pad(&ents[i]->pads[0]);
  		if (source_pad == NULL)
  			continue;

diff --git a/drivers/media/platform/s3c-camif/camif-capture.c b/drivers/media/platform/s3c-camif/camif-capture.c
index a55793c..4397722 100644
--- a/drivers/media/platform/s3c-camif/camif-capture.c
+++ b/drivers/media/platform/s3c-camif/camif-capture.c
@@ -845,7 +845,7 @@ static int camif_pipeline_validate(struct camif_dev *camif)
  	int ret;

  	/* Retrieve format at the sensor subdev source pad */
-	pad = media_entity_remote_source(&camif->pads[0]);
+	pad = media_entity_remote_pad(&camif->pads[0]);
  	if (!pad || media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
  		return -EPIPE;

diff --git a/drivers/media/platform/s5p-fimc/fimc-capture.c b/drivers/media/platform/s5p-fimc/fimc-capture.c
index 18a70e4..b5a0a2f 100644
--- a/drivers/media/platform/s5p-fimc/fimc-capture.c
+++ b/drivers/media/platform/s5p-fimc/fimc-capture.c
@@ -799,7 +799,7 @@ static struct media_entity *fimc_pipeline_get_head(struct media_entity *me)
  	struct media_pad *pad =&me->pads[0];

  	while (!(pad->flags&  MEDIA_PAD_FL_SOURCE)) {
-		pad = media_entity_remote_source(pad);
+		pad = media_entity_remote_pad(pad);
  		if (!pad)
  			break;
  		me = pad->entity;
@@ -871,7 +871,7 @@ static int fimc_pipeline_try_format(struct fimc_ctx *ctx,
  					return ret;
  			}

-			pad = media_entity_remote_source(&me->pads[sfmt.pad]);
+			pad = media_entity_remote_pad(&me->pads[sfmt.pad]);
  			if (!pad)
  				return -EINVAL;
  			me = pad->entity;
@@ -1158,7 +1158,7 @@ static int fimc_pipeline_validate(struct fimc_dev *fimc)
  	int ret;

  	/* Start with the video capture node pad */
-	pad = media_entity_remote_source(&vid_cap->vd_pad);
+	pad = media_entity_remote_pad(&vid_cap->vd_pad);
  	if (pad == NULL)
  		return -EPIPE;
  	/* FIMC.{N} subdevice */
@@ -1183,7 +1183,7 @@ static int fimc_pipeline_validate(struct fimc_dev *fimc)
  				return -EPIPE;
  		}
  		/* Retrieve format at the source pad */
-		pad = media_entity_remote_source(pad);
+		pad = media_entity_remote_pad(pad);
  		if (pad == NULL ||
  		    media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
  			break;
diff --git a/drivers/media/platform/s5p-fimc/fimc-lite.c b/drivers/media/platform/s5p-fimc/fimc-lite.c
index ef31c39..a48abb2 100644
--- a/drivers/media/platform/s5p-fimc/fimc-lite.c
+++ b/drivers/media/platform/s5p-fimc/fimc-lite.c
@@ -774,7 +774,7 @@ static int fimc_pipeline_validate(struct fimc_lite *fimc)
  				return -EPIPE;
  		}
  		/* Retrieve format at the source pad */
-		pad = media_entity_remote_source(pad);
+		pad = media_entity_remote_pad(pad);
  		if (pad == NULL ||
  		    media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
  			break;
@@ -981,7 +981,7 @@ static struct v4l2_subdev *__find_remote_sensor(struct media_entity *me)

  	while (pad->flags&  MEDIA_PAD_FL_SINK) {
  		/* source pad */
-		pad = media_entity_remote_source(pad);
+		pad = media_entity_remote_pad(pad);
  		if (pad == NULL ||
  		    media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
  			break;
diff --git a/drivers/media/platform/s5p-fimc/fimc-mdevice.c b/drivers/media/platform/s5p-fimc/fimc-mdevice.c
index 62f3a71..8399d31 100644
--- a/drivers/media/platform/s5p-fimc/fimc-mdevice.c
+++ b/drivers/media/platform/s5p-fimc/fimc-mdevice.c
@@ -54,7 +54,7 @@ static void fimc_pipeline_prepare(struct fimc_pipeline *p,
  			break;

  		/* source pad */
-		pad = media_entity_remote_source(pad);
+		pad = media_entity_remote_pad(pad);
  		if (pad == NULL ||
  		    media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
  			break;
diff --git a/drivers/staging/media/davinci_vpfe/vpfe_video.c b/drivers/staging/media/davinci_vpfe/vpfe_video.c
index 99ccbeb..de52978 100644
--- a/drivers/staging/media/davinci_vpfe/vpfe_video.c
+++ b/drivers/staging/media/davinci_vpfe/vpfe_video.c
@@ -39,7 +39,7 @@ static struct media_entity *vpfe_get_input_entity
  	struct vpfe_device *vpfe_dev = video->vpfe_dev;
  	struct media_pad *remote;

-	remote = media_entity_remote_source(&vpfe_dev->vpfe_isif.pads[0]);
+	remote = media_entity_remote_pad(&vpfe_dev->vpfe_isif.pads[0]);
  	if (remote == NULL) {
  		pr_err("Invalid media connection to isif/ccdc\n");
  		return NULL;
@@ -56,7 +56,7 @@ static int vpfe_update_current_ext_subdev(struct vpfe_video_device *video)
  	struct media_pad *remote;
  	int i;

-	remote = media_entity_remote_source(&vpfe_dev->vpfe_isif.pads[0]);
+	remote = media_entity_remote_pad(&vpfe_dev->vpfe_isif.pads[0]);
  	if (remote == NULL) {
  		pr_err("Invalid media connection to isif/ccdc\n");
  		return -EINVAL;
@@ -89,7 +89,7 @@ static int vpfe_update_current_ext_subdev(struct vpfe_video_device *video)
  static struct v4l2_subdev *
  vpfe_video_remote_subdev(struct vpfe_video_device *video, u32 *pad)
  {
-	struct media_pad *remote = media_entity_remote_source(&video->pad);
+	struct media_pad *remote = media_entity_remote_pad(&video->pad);

  	if (remote == NULL || remote->entity->type != MEDIA_ENT_T_V4L2_SUBDEV)
  		return NULL;
@@ -114,7 +114,7 @@ __vpfe_video_get_format(struct vpfe_video_device *video,
  		return -EINVAL;

  	fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
-	remote = media_entity_remote_source(&video->pad);
+	remote = media_entity_remote_pad(&video->pad);
  	fmt.pad = remote->index;

  	ret = v4l2_subdev_call(subdev, pad, get_fmt, NULL,&fmt);
@@ -245,7 +245,7 @@ static int vpfe_video_validate_pipeline(struct vpfe_pipeline *pipe)
  			return -EPIPE;

  		/* Retrieve the source format */
-		pad = media_entity_remote_source(pad);
+		pad = media_entity_remote_pad(pad);
  		if (pad == NULL ||
  			pad->entity->type != MEDIA_ENT_T_V4L2_SUBDEV)
  			break;
@@ -667,7 +667,7 @@ static int vpfe_enum_fmt(struct file *file, void  *priv,
  		return -EINVAL;
  	}
  	/* get the remote pad */
-	remote = media_entity_remote_source(&video->pad);
+	remote = media_entity_remote_pad(&video->pad);
  	if (remote == NULL) {
  		v4l2_err(&vpfe_dev->v4l2_dev,
  			 "invalid remote pad for video node\n");
diff --git a/include/media/media-entity.h b/include/media/media-entity.h
index 0c16f51..4eefedc 100644
--- a/include/media/media-entity.h
+++ b/include/media/media-entity.h
@@ -132,7 +132,7 @@ int __media_entity_setup_link(struct media_link *link, u32 flags);
  int media_entity_setup_link(struct media_link *link, u32 flags);
  struct media_link *media_entity_find_link(struct media_pad *source,
  		struct media_pad *sink);
-struct media_pad *media_entity_remote_source(struct media_pad *pad);
+struct media_pad *media_entity_remote_pad(struct media_pad *pad);

  struct media_entity *media_entity_get(struct media_entity *entity);
  void media_entity_put(struct media_entity *entity);
--
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