[PATCH v2 5/9] ov772x: Make to_ov772x convert from v4l2_subdev to ov772x_priv

[Laurent Pinchart]

Conversion from i2c_client to ov772x_priv is only needed in a single
location, while conversion from v4l2_subdev to ov772x_priv is needed in
several locations. Perform the former manually, and use to_ov772x for
the later.

Signed-off-by: Laurent Pinchart <laurent.pinch...@ideasonboard.com>
---
 drivers/media/video/ov772x.c |   21 ++++++++++-----------
 1 files changed, 10 insertions(+), 11 deletions(-)

diff --git a/drivers/media/video/ov772x.c b/drivers/media/video/ov772x.c
index be3dfb5..2b95dd4 100644
--- a/drivers/media/video/ov772x.c
+++ b/drivers/media/video/ov772x.c
@@ -525,10 +525,9 @@ static const struct ov772x_win_size ov772x_win_sizes[] = {
  * general function
  */
 
-static struct ov772x_priv *to_ov772x(const struct i2c_client *client)
+static struct ov772x_priv *to_ov772x(struct v4l2_subdev *sd)
 {
-       return container_of(i2c_get_clientdata(client), struct ov772x_priv,
-                           subdev);
+       return container_of(sd, struct ov772x_priv, subdev);
 }
 
 static int ov772x_write_array(struct i2c_client        *client,
@@ -574,7 +573,7 @@ static int ov772x_reset(struct i2c_client *client)
 static int ov772x_s_stream(struct v4l2_subdev *sd, int enable)
 {
        struct i2c_client *client = v4l2_get_subdevdata(sd);
-       struct ov772x_priv *priv = container_of(sd, struct ov772x_priv, subdev);
+       struct ov772x_priv *priv = to_ov772x(sd);
 
        if (!enable) {
                ov772x_mask_set(client, COM2, SOFT_SLEEP_MODE, SOFT_SLEEP_MODE);
@@ -638,7 +637,7 @@ static int ov772x_s_ctrl(struct v4l2_ctrl *ctrl)
 static int ov772x_g_chip_ident(struct v4l2_subdev *sd,
                               struct v4l2_dbg_chip_ident *id)
 {
-       struct ov772x_priv *priv = container_of(sd, struct ov772x_priv, subdev);
+       struct ov772x_priv *priv = to_ov772x(sd);
 
        id->ident    = priv->model;
        id->revision = 0;
@@ -880,7 +879,7 @@ static int ov772x_cropcap(struct v4l2_subdev *sd, struct 
v4l2_cropcap *a)
 static int ov772x_g_fmt(struct v4l2_subdev *sd,
                        struct v4l2_mbus_framefmt *mf)
 {
-       struct ov772x_priv *priv = container_of(sd, struct ov772x_priv, subdev);
+       struct ov772x_priv *priv = to_ov772x(sd);
 
        mf->width       = priv->win->width;
        mf->height      = priv->win->height;
@@ -893,7 +892,7 @@ static int ov772x_g_fmt(struct v4l2_subdev *sd,
 
 static int ov772x_s_fmt(struct v4l2_subdev *sd, struct v4l2_mbus_framefmt *mf)
 {
-       struct ov772x_priv *priv = container_of(sd, struct ov772x_priv, subdev);
+       struct ov772x_priv *priv = to_ov772x(sd);
        const struct ov772x_color_format *cfmt;
        const struct ov772x_win_size *win;
        int ret;
@@ -933,9 +932,9 @@ static int ov772x_try_fmt(struct v4l2_subdev *sd,
        return 0;
 }
 
-static int ov772x_video_probe(struct i2c_client *client)
+static int ov772x_video_probe(struct ov772x_priv *priv)
 {
-       struct ov772x_priv *priv = to_ov772x(client);
+       struct i2c_client  *client = v4l2_get_subdevdata(&priv->subdev);
        u8                  pid, ver;
        const char         *devname;
        int                 ret;
@@ -1078,7 +1077,7 @@ static int ov772x_probe(struct i2c_client *client,
                goto done;
        }
 
-       ret = ov772x_video_probe(client);
+       ret = ov772x_video_probe(priv);
        if (ret < 0)
                goto done;
 
@@ -1095,7 +1094,7 @@ done:
 
 static int ov772x_remove(struct i2c_client *client)
 {
-       struct ov772x_priv *priv = to_ov772x(client);
+       struct ov772x_priv *priv = to_ov772x(i2c_get_clientdata(client));
 
        v4l2_device_unregister_subdev(&priv->subdev);
        v4l2_ctrl_handler_free(&priv->hdl);
-- 
1.7.8.6

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