[PATCH v4 4/8] media: v4l: ctrls-api: Allow array update in __v4l2_ctrl_modify_range

[Volodymyr Kharuk <vkh@xxxxxxxxxxx>]

For V4L2_CID_TOF_TINT, which is dynamic array, it is required to use
__v4l2_ctrl_modify_range.  So the idea is to use type_ops instead of u64
from union. It will allow to work with any type.

Signed-off-by: Volodymyr Kharuk <vkh@xxxxxxxxxxx>
---
 drivers/media/v4l2-core/v4l2-ctrls-api.c | 25 ++++++++++++------------
 1 file changed, 13 insertions(+), 12 deletions(-)

diff --git a/drivers/media/v4l2-core/v4l2-ctrls-api.c b/drivers/media/v4l2-core/v4l2-ctrls-api.c
index d0a3aa3806fb..ebe57ec72813 100644
--- a/drivers/media/v4l2-core/v4l2-ctrls-api.c
+++ b/drivers/media/v4l2-core/v4l2-ctrls-api.c
@@ -933,17 +933,18 @@ int __v4l2_ctrl_modify_range(struct v4l2_ctrl *ctrl,
 	lockdep_assert_held(ctrl->handler->lock);
 
 	switch (ctrl->type) {
+	case V4L2_CTRL_TYPE_MENU:
+	case V4L2_CTRL_TYPE_INTEGER_MENU:
+		if (ctrl->is_array)
+			return -EINVAL;
+		fallthrough;
 	case V4L2_CTRL_TYPE_INTEGER:
 	case V4L2_CTRL_TYPE_INTEGER64:
 	case V4L2_CTRL_TYPE_BOOLEAN:
-	case V4L2_CTRL_TYPE_MENU:
-	case V4L2_CTRL_TYPE_INTEGER_MENU:
 	case V4L2_CTRL_TYPE_BITMASK:
 	case V4L2_CTRL_TYPE_U8:
 	case V4L2_CTRL_TYPE_U16:
 	case V4L2_CTRL_TYPE_U32:
-		if (ctrl->is_array)
-			return -EINVAL;
 		ret = check_range(ctrl->type, min, max, step, def);
 		if (ret)
 			return ret;
@@ -961,16 +962,16 @@ int __v4l2_ctrl_modify_range(struct v4l2_ctrl *ctrl,
 	}
 	cur_to_new(ctrl);
 	if (validate_new(ctrl, ctrl->p_new)) {
-		if (ctrl->type == V4L2_CTRL_TYPE_INTEGER64)
-			*ctrl->p_new.p_s64 = def;
-		else
-			*ctrl->p_new.p_s32 = def;
+		WARN_ON(ctrl->is_array); /* This shouldn't happen, as
+					  * INTEGER/Ux/BOOLEAN/BITMASK will not
+					  * return an error.
+					  * In case it happened, all array will
+					  * set to default value
+					  */
+		ctrl->type_ops->init(ctrl, 0, ctrl->p_new);
 	}
 
-	if (ctrl->type == V4L2_CTRL_TYPE_INTEGER64)
-		value_changed = *ctrl->p_new.p_s64 != *ctrl->p_cur.p_s64;
-	else
-		value_changed = *ctrl->p_new.p_s32 != *ctrl->p_cur.p_s32;
+	value_changed = !ctrl->type_ops->equal(ctrl, ctrl->p_cur, ctrl->p_new);
 	if (value_changed)
 		ret = set_ctrl(NULL, ctrl, V4L2_EVENT_CTRL_CH_RANGE);
 	else if (range_changed)
-- 
BR,
Volodymyr Kharuk