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[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>
This commit is contained in:
Hans Verkuil 2015-01-19 06:23:26 -03:00 committed by Mauro Carvalho Chehab
parent 6cf11ee630
commit 42639f6de6
1 changed files with 13 additions and 11 deletions
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24
drivers/media/usb/pvrusb2/pvrusb2-v4l2.c
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@ -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;
}