[media] v4l2-ctrls: create type_ops

Since compound controls can have non-standard types we need to be able to do
type-specific checks etc. In order to make that easy type operations are added.
There are four operations:

- equal: check if two values are equal
- init: initialize a value
- log: log the value
- validate: validate a new value

The v4l2_ctrl struct adds p_new and p_cur unions at the end of the struct.
This union provides a standard way of accessing control types through a pointer,
which greatly simplifies internal control processing.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

1 files changed, 2 insertions, 3 deletions

diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c
index c38a6208d2c..96bc117f66b 100644
--- a/drivers/media/v4l2-core/v4l2-ioctl.c
+++ b/drivers/media/v4l2-core/v4l2-ioctl.c
@@ -531,13 +531,12 @@ static void v4l_print_query_ext_ctrl(const void *arg, bool write_only)
 
 	pr_cont("id=0x%x, type=%d, name=%.*s, min/max=%lld/%lld, "
 		"step=%lld, default=%lld, flags=0x%08x, elem_size=%u, elems=%u, "
-		"nr_of_dims=%u, dims=%u,%u,%u,%u,%u,%u,%u,%u\n",
+		"nr_of_dims=%u, dims=%u,%u,%u,%u\n",
 			p->id, p->type, (int)sizeof(p->name), p->name,
 			p->minimum, p->maximum,
 			p->step, p->default_value, p->flags,
 			p->elem_size, p->elems, p->nr_of_dims,
-			p->dims[0], p->dims[1], p->dims[2], p->dims[3],
-			p->dims[4], p->dims[5], p->dims[6], p->dims[7]);
+			p->dims[0], p->dims[1], p->dims[2], p->dims[3]);
 }
 
 static void v4l_print_querymenu(const void *arg, bool write_only)