media: uvcvideo: Report V4L2 device caps through the video_device structure

The V4L2 core populates the struct v4l2_capability device_caps field
from the same field in video_device. There's no need to handle that
manually in the driver.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski@intel.com>
Tested-by: Guennadi Liakhovetski <guennadi.liakhovetski@intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

diff --git a/drivers/media/usb/uvc/uvc_driver.c b/drivers/media/usb/uvc/uvc_driver.c
index f6fbfc1..d634585 100644 (file)
--- a/drivers/media/usb/uvc/uvc_driver.c
+++ b/drivers/media/usb/uvc/uvc_driver.c
@@ -1921,6 +1921,17 @@ int uvc_register_video_device(struct uvc_device *dev,
                vdev->vfl_dir = VFL_DIR_TX;
        else
                vdev->vfl_dir = VFL_DIR_RX;
+
+       switch (type) {
+       case V4L2_BUF_TYPE_VIDEO_CAPTURE:
+       default:
+               vdev->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
+               break;
+       case V4L2_BUF_TYPE_VIDEO_OUTPUT:
+               vdev->device_caps = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_STREAMING;
+               break;
+       }
+
        strlcpy(vdev->name, dev->name, sizeof vdev->name);
 
        /*

diff --git a/drivers/media/usb/uvc/uvc_v4l2.c b/drivers/media/usb/uvc/uvc_v4l2.c
index 3e7e283..5e03239 100644 (file)
--- a/drivers/media/usb/uvc/uvc_v4l2.c
+++ b/drivers/media/usb/uvc/uvc_v4l2.c
@@ -568,10 +568,6 @@ static int uvc_ioctl_querycap(struct file *file, void *fh,
        usb_make_path(stream->dev->udev, cap->bus_info, sizeof(cap->bus_info));
        cap->capabilities = V4L2_CAP_DEVICE_CAPS | V4L2_CAP_STREAMING
                          | chain->caps;
-       if (stream->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
-               cap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
-       else
-               cap->device_caps = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_STREAMING;
 
        return 0;
 }