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V4L/DVB (13222): pvrusb2: Make more info available to udev

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pvrusb2: Associate V4L device node in sysfs with the underlying USB
device.  This opens the door to device information tracking in udev

Signed-off-by: Mike Isely <isely@pobox.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Mike Isely 2009-10-12 00:13:28 -03:00 committed by Mauro Carvalho Chehab
parent 5abaa530bf
commit 4a89baa2e1
1 changed files with 14 additions and 1 deletions
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15
drivers/media/video/pvrusb2/pvrusb2-v4l2.c
View file

@ -913,6 +913,15 @@ static void pvr2_v4l2_dev_destroy(struct pvr2_v4l2_dev *dip)
}
static void pvr2_v4l2_dev_disassociate_parent(struct pvr2_v4l2_dev *dip)
{
if (!dip) return;
if (!dip->devbase.parent) return;
dip->devbase.parent = NULL;
device_move(&dip->devbase.dev, NULL, DPM_ORDER_NONE);
}
static void pvr2_v4l2_destroy_no_lock(struct pvr2_v4l2 *vp)
{
if (vp->dev_video) {
@ -943,6 +952,8 @@ static void pvr2_v4l2_internal_check(struct pvr2_channel *chp)
struct pvr2_v4l2 *vp;
vp = container_of(chp,struct pvr2_v4l2,channel);
if (!vp->channel.mc_head->disconnect_flag) return;
pvr2_v4l2_dev_disassociate_parent(vp->dev_video);
pvr2_v4l2_dev_disassociate_parent(vp->dev_radio);
if (vp->vfirst) return;
pvr2_v4l2_destroy_no_lock(vp);
}
@ -1250,12 +1261,13 @@ static void pvr2_v4l2_dev_init(struct pvr2_v4l2_dev *dip,
struct pvr2_v4l2 *vp,
int v4l_type)
{
struct usb_device *usbdev;
int mindevnum;
int unit_number;
int *nr_ptr = NULL;
dip->v4lp = vp;
usbdev = pvr2_hdw_get_dev(vp->channel.mc_head->hdw);
dip->v4l_type = v4l_type;
switch (v4l_type) {
case VFL_TYPE_GRABBER:
@ -1296,6 +1308,7 @@ static void pvr2_v4l2_dev_init(struct pvr2_v4l2_dev *dip,
if (nr_ptr && (unit_number >= 0) && (unit_number < PVR_NUM)) {
mindevnum = nr_ptr[unit_number];
}
dip->devbase.parent = &usbdev->dev;
if ((video_register_device(&dip->devbase,
dip->v4l_type, mindevnum) < 0) &&
(video_register_device(&dip->devbase,