V4L/DVB (13222): pvrusb2: Make more info available to udev
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>
diff --git a/drivers/media/video/pvrusb2/pvrusb2-v4l2.c b/drivers/media/video/pvrusb2/pvrusb2-v4l2.c
index 2d8825e..6aa48e0 100644
--- a/drivers/media/video/pvrusb2/pvrusb2-v4l2.c
+++ b/drivers/media/video/pvrusb2/pvrusb2-v4l2.c
@@ -913,6 +913,15 @@
}
+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 @@
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 @@
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 @@
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,
