From 5de75b1decb6085f5f91462735ffbe0dd952dc9f Mon Sep 17 00:00:00 2001 From: =?utf8?q?Niklas=20S=C3=B6derlund?= Date: Tue, 23 May 2017 21:15:29 -0300 Subject: [PATCH] [media] rcar-vin: refactor pad lookup code MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit The pad lookup code can be broken out to increase readability and to reduce code duplication. Signed-off-by: Niklas Söderlund Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/platform/rcar-vin/rcar-v4l2.c | 36 +++++++++++++++++------------ 1 file changed, 21 insertions(+), 15 deletions(-) diff --git a/drivers/media/platform/rcar-vin/rcar-v4l2.c b/drivers/media/platform/rcar-vin/rcar-v4l2.c index 1a75191..90ea582 100644 --- a/drivers/media/platform/rcar-vin/rcar-v4l2.c +++ b/drivers/media/platform/rcar-vin/rcar-v4l2.c @@ -870,11 +870,25 @@ static void rvin_notify(struct v4l2_subdev *sd, } } +static int rvin_find_pad(struct v4l2_subdev *sd, int direction) +{ + unsigned int pad; + + if (sd->entity.num_pads <= 1) + return 0; + + for (pad = 0; pad < sd->entity.num_pads; pad++) + if (sd->entity.pads[pad].flags & direction) + return pad; + + return -EINVAL; +} + int rvin_v4l2_probe(struct rvin_dev *vin) { struct video_device *vdev = &vin->vdev; struct v4l2_subdev *sd = vin_to_source(vin); - int pad_idx, ret; + int ret; v4l2_set_subdev_hostdata(sd, vin); @@ -920,21 +934,13 @@ int rvin_v4l2_probe(struct rvin_dev *vin) vdev->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING | V4L2_CAP_READWRITE; - vin->digital.source_pad = 0; - for (pad_idx = 0; pad_idx < sd->entity.num_pads; pad_idx++) - if (sd->entity.pads[pad_idx].flags == MEDIA_PAD_FL_SOURCE) - break; - if (pad_idx >= sd->entity.num_pads) - return -EINVAL; - - vin->digital.source_pad = pad_idx; + ret = rvin_find_pad(sd, MEDIA_PAD_FL_SOURCE); + if (ret < 0) + return ret; + vin->digital.source_pad = ret; - vin->digital.sink_pad = 0; - for (pad_idx = 0; pad_idx < sd->entity.num_pads; pad_idx++) - if (sd->entity.pads[pad_idx].flags == MEDIA_PAD_FL_SINK) { - vin->digital.sink_pad = pad_idx; - break; - } + ret = rvin_find_pad(sd, MEDIA_PAD_FL_SINK); + vin->digital.sink_pad = ret < 0 ? 0 : ret; vin->format.pixelformat = RVIN_DEFAULT_FORMAT; rvin_reset_format(vin); -- 2.7.4