[PATCH 3/3] v4l: subdev: Call pad init_cfg operation when opening subdevs

[Sakari Ailus <sakari.ailus@linux.intel.com>]

From: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>

The subdev core code currently rely on the subdev open handler to
initialize the file handle's pad configuration, even though subdevs now
have a pad operation dedicated for that purpose.

As a first step towards migration to init_cfg, call the operation
operation in the subdev core open implementation. Subdevs that are
haven't been moved to init_cfg yet will just continue implementing pad
config initialization in their open handler.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
---
 drivers/media/v4l2-core/v4l2-subdev.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/media/v4l2-core/v4l2-subdev.c b/drivers/media/v4l2-core/v4l2-subdev.c
index 224ea60..9cbd011 100644
--- a/drivers/media/v4l2-core/v4l2-subdev.c
+++ b/drivers/media/v4l2-core/v4l2-subdev.c
@@ -85,6 +85,8 @@ static int subdev_open(struct file *file)
 	}
 #endif
 
+	v4l2_subdev_call(sd, pad, init_cfg, subdev_fh->pad);
+
 	if (sd->internal_ops && sd->internal_ops->open) {
 		ret = sd->internal_ops->open(sd, subdev_fh);
 		if (ret < 0)
-- 
1.9.1