media: v4l2: Remove vidioc_queryctrl callback

All the drivers either use the control framework or provide a
vidioc_query_ext_ctrl. We can remove this callback to reduce the
temptation of new drivers to implement it.

Signed-off-by: Ricardo Ribalda <ribalda@chromium.org>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

Author: ribalda

drivers/media/v4l2-core/v4l2-dev.c

@@ -572,8 +572,7 @@ static void determine_valid_ioctls(struct video_device *vdev)
 	   and that can't be tested here. If the bit for these control ioctls
 	   is set, then the ioctl is valid. But if it is 0, then it can still
 	   be valid if the filehandle passed the control handler. */
-	if (vdev->ctrl_handler || ops->vidioc_queryctrl ||
-	    ops->vidioc_query_ext_ctrl)
+	if (vdev->ctrl_handler || ops->vidioc_query_ext_ctrl)
 		__set_bit(_IOC_NR(VIDIOC_QUERYCTRL), valid_ioctls);
 	if (vdev->ctrl_handler || ops->vidioc_query_ext_ctrl)
 		__set_bit(_IOC_NR(VIDIOC_QUERY_EXT_CTRL), valid_ioctls);

drivers/media/v4l2-core/v4l2-ioctl.c

@@ -2296,8 +2296,6 @@ static int v4l_queryctrl(const struct v4l2_ioctl_ops *ops,
 		return v4l2_queryctrl(vfh->ctrl_handler, p);
 	if (vfd->ctrl_handler)
 		return v4l2_queryctrl(vfd->ctrl_handler, p);
-	if (ops->vidioc_queryctrl)
-		return ops->vidioc_queryctrl(file, fh, p);
 	if (!ops->vidioc_query_ext_ctrl)
 		return -ENOTTY;
 

include/media/v4l2-ioctl.h

@@ -193,8 +193,6 @@ struct v4l2_fh;
  *	:ref:`VIDIOC_G_OUTPUT <vidioc_g_output>` ioctl
  * @vidioc_s_output: pointer to the function that implements
  *	:ref:`VIDIOC_S_OUTPUT <vidioc_g_output>` ioctl
- * @vidioc_queryctrl: pointer to the function that implements
- *	:ref:`VIDIOC_QUERYCTRL <vidioc_queryctrl>` ioctl
  * @vidioc_query_ext_ctrl: pointer to the function that implements
  *	:ref:`VIDIOC_QUERY_EXT_CTRL <vidioc_queryctrl>` ioctl
  * @vidioc_g_ctrl: pointer to the function that implements
@@ -461,8 +459,6 @@ struct v4l2_ioctl_ops {
 	int (*vidioc_s_output)(struct file *file, void *fh, unsigned int i);
 
 		/* Control handling */
-	int (*vidioc_queryctrl)(struct file *file, void *fh,
-				struct v4l2_queryctrl *a);
 	int (*vidioc_query_ext_ctrl)(struct file *file, void *fh,
 				     struct v4l2_query_ext_ctrl *a);
 	int (*vidioc_g_ctrl)(struct file *file, void *fh,