[media] pvrusb2: fix missing device_caps in querycap

The VIDIOC_QUERYCAP function should set device_caps, but this was missing.
In addition, it set the version field as well, but that should be done by
the core, not by the driver.

If a driver doesn't set device_caps the v4l2 core will issue a WARN_ON, so
it's important that this is set correctly.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

diff --git a/drivers/media/usb/pvrusb2/pvrusb2-v4l2.c b/drivers/media/usb/pvrusb2/pvrusb2-v4l2.c
index 1b158f1..536210b 100644 (file)
--- a/drivers/media/usb/pvrusb2/pvrusb2-v4l2.c
+++ b/drivers/media/usb/pvrusb2/pvrusb2-v4l2.c
@@ -89,16 +89,6 @@ static int vbi_nr[PVR_NUM] = {[0 ... PVR_NUM-1] = -1};
 module_param_array(vbi_nr, int, NULL, 0444);
 MODULE_PARM_DESC(vbi_nr, "Offset for device's vbi dev minor");
 
-static struct v4l2_capability pvr_capability ={
-       .driver         = "pvrusb2",
-       .card           = "Hauppauge WinTV pvr-usb2",
-       .bus_info       = "usb",
-       .version        = LINUX_VERSION_CODE,
-       .capabilities   = (V4L2_CAP_VIDEO_CAPTURE |
-                          V4L2_CAP_TUNER | V4L2_CAP_AUDIO | V4L2_CAP_RADIO |
-                          V4L2_CAP_READWRITE),
-};
-
 static struct v4l2_fmtdesc pvr_fmtdesc [] = {
        {
                .index          = 0,
@@ -160,10 +150,22 @@ static int pvr2_querycap(struct file *file, void *priv, struct v4l2_capability *
        struct pvr2_v4l2_fh *fh = file->private_data;
        struct pvr2_hdw *hdw = fh->channel.mc_head->hdw;
 
-       memcpy(cap, &pvr_capability, sizeof(struct v4l2_capability));
+       strlcpy(cap->driver, "pvrusb2", sizeof(cap->driver));
        strlcpy(cap->bus_info, pvr2_hdw_get_bus_info(hdw),
                        sizeof(cap->bus_info));
        strlcpy(cap->card, pvr2_hdw_get_desc(hdw), sizeof(cap->card));
+       cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_TUNER |
+                           V4L2_CAP_AUDIO | V4L2_CAP_RADIO |
+                           V4L2_CAP_READWRITE | V4L2_CAP_DEVICE_CAPS;
+       switch (fh->pdi->devbase.vfl_type) {
+       case VFL_TYPE_GRABBER:
+               cap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_AUDIO;
+               break;
+       case VFL_TYPE_RADIO:
+               cap->device_caps = V4L2_CAP_RADIO;
+               break;
+       }
+       cap->device_caps |= V4L2_CAP_TUNER | V4L2_CAP_READWRITE;
        return 0;
 }