meson: Remove -Wno-unused-parameter

We build libcamera with -Wno-unused-parameter and this doesn't cause
much issue internally. However, it prevents catching unused parameters
in inline functions defined in public headers. This can lead to
compilation warnings for applications compiled without
-Wno-unused-parameter.

To catch those issues, remove -Wno-unused-parameter and fix all the
related warnings with [[maybe_unused]].

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>

1 files changed, 2 insertions, 2 deletions

diff --git a/src/libcamera/v4l2_videodevice.cpp b/src/libcamera/v4l2_videodevice.cpp
index 652677ff..508522ef 100644
--- a/src/libcamera/v4l2_videodevice.cpp
+++ b/src/libcamera/v4l2_videodevice.cpp
@@ -1462,7 +1462,7 @@ int V4L2VideoDevice::queueBuffer(FrameBuffer *buffer)
  * For Capture video devices the FrameBuffer will contain valid data.
  * For Output video devices the FrameBuffer can be considered empty.
  */
-void V4L2VideoDevice::bufferAvailable(EventNotifier *notifier)
+void V4L2VideoDevice::bufferAvailable([[maybe_unused]] EventNotifier *notifier)
 {
 	FrameBuffer *buffer = dequeueBuffer();
 	if (!buffer)
@@ -1539,7 +1539,7 @@ FrameBuffer *V4L2VideoDevice::dequeueBuffer()
  * When this slot is called, a V4L2 event is available to be dequeued from the
  * device.
  */
-void V4L2VideoDevice::eventAvailable(EventNotifier *notifier)
+void V4L2VideoDevice::eventAvailable([[maybe_unused]] EventNotifier *notifier)
 {
 	struct v4l2_event event{};
 	int ret = ioctl(VIDIOC_DQEVENT, &event);