media: v4l2-dev.c: check for V4L2_CAP_STREAMING to enable streaming ioctls

Rather than checking which device type it is, just check the STREAMING
cap since that indicates support for streaming ioctls.

Some drivers only support READWRITE (typically MPEG encoders).
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

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

@@ -556,6 +556,7 @@ static void determine_valid_ioctls(struct video_device *vdev)
 	bool is_rx = vdev->vfl_dir != VFL_DIR_TX;
 	bool is_tx = vdev->vfl_dir != VFL_DIR_RX;
 	bool is_io_mc = vdev->device_caps & V4L2_CAP_IO_MC;
+	bool has_streaming = vdev->device_caps & V4L2_CAP_STREAMING;
 
 	bitmap_zero(valid_ioctls, BASE_VIDIOC_PRIVATE);
 
@@ -708,8 +709,8 @@ static void determine_valid_ioctls(struct video_device *vdev)
 		SET_VALID_IOCTL(ops, VIDIOC_TRY_FMT, vidioc_try_fmt_sdr_out);
 	}
 
-	if (is_vid || is_vbi || is_sdr || is_tch || is_meta) {
-		/* ioctls valid for video, vbi, sdr, touch and metadata */
+	if (has_streaming) {
+		/* ioctls valid for streaming I/O */
 		SET_VALID_IOCTL(ops, VIDIOC_REQBUFS, vidioc_reqbufs);
 		SET_VALID_IOCTL(ops, VIDIOC_QUERYBUF, vidioc_querybuf);
 		SET_VALID_IOCTL(ops, VIDIOC_QBUF, vidioc_qbuf);