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V4L/DVB (11155): pvrusb2: Set up v4l2_device instance

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Define a v4l2_device instance in the pvrusb2 driver and initialize /
tear it down appropriately.  This is a step in the v4l2-subdev
adoption effort.

Signed-off-by: Mike Isely <isely@pobox.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Mike Isely 2009-03-06 23:20:31 -03:00 committed by Mauro Carvalho Chehab
parent 59af336795
commit b72b7bf5cb
2 changed files with 20 additions and 1 deletions
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3
drivers/media/video/pvrusb2/pvrusb2-hdw-internal.h
View file

@ -38,6 +38,7 @@
#include <linux/mutex.h>
#include "pvrusb2-hdw.h"
#include "pvrusb2-io.h"
#include <media/v4l2-device.h>
#include <media/cx2341x.h>
#include "pvrusb2-devattr.h"
@ -179,6 +180,8 @@ struct pvr2_hdw {
struct usb_device *usb_dev;
struct usb_interface *usb_intf;
/* Our handle into the v4l2 sub-device architecture */
struct v4l2_device v4l2_dev;
/* Device description, anything that must adjust behavior based on
device specific info will use information held here. */
const struct pvr2_device_desc *hdw_desc;

18
drivers/media/video/pvrusb2/pvrusb2-hdw.c
View file

@ -2192,11 +2192,14 @@ struct pvr2_hdw *pvr2_hdw_create(struct usb_interface *intf,
struct pvr2_hdw *hdw = NULL;
int valid_std_mask;
struct pvr2_ctrl *cptr;
struct usb_device *usb_dev;
const struct pvr2_device_desc *hdw_desc;
__u8 ifnum;
struct v4l2_queryctrl qctrl;
struct pvr2_ctl_info *ciptr;
usb_dev = interface_to_usbdev(intf);
hdw_desc = (const struct pvr2_device_desc *)(devid->driver_info);
if (hdw_desc == NULL) {
@ -2381,6 +2384,11 @@ struct pvr2_hdw *pvr2_hdw_create(struct usb_interface *intf,
hdw->ctl_read_urb = usb_alloc_urb(0,GFP_KERNEL);
if (!hdw->ctl_read_urb) goto fail;
if (v4l2_device_register(&usb_dev->dev, &hdw->v4l2_dev) != 0) {
pvr2_trace(PVR2_TRACE_ERROR_LEGS,
"Error registering with v4l core, giving up");
goto fail;
}
mutex_lock(&pvr2_unit_mtx); do {
for (idx = 0; idx < PVR_NUM; idx++) {
if (unit_pointers[idx]) continue;
@ -2412,7 +2420,7 @@ struct pvr2_hdw *pvr2_hdw_create(struct usb_interface *intf,
hdw->flag_ok = !0;
hdw->usb_intf = intf;
hdw->usb_dev = interface_to_usbdev(intf);
hdw->usb_dev = usb_dev;
usb_make_path(hdw->usb_dev, hdw->bus_info, sizeof(hdw->bus_info));
@ -2472,6 +2480,13 @@ static void pvr2_hdw_remove_usb_stuff(struct pvr2_hdw *hdw)
hdw->ctl_write_buffer = NULL;
}
hdw->flag_disconnected = !0;
/* If we don't do this, then there will be a dangling struct device
reference to our disappearing device persisting inside the V4L
core... */
if (hdw->v4l2_dev.dev) {
dev_set_drvdata(hdw->v4l2_dev.dev, NULL);
hdw->v4l2_dev.dev = NULL;
}
hdw->usb_dev = NULL;
hdw->usb_intf = NULL;
pvr2_hdw_render_useless(hdw);
@ -2504,6 +2519,7 @@ void pvr2_hdw_destroy(struct pvr2_hdw *hdw)
}
pvr2_i2c_core_done(hdw);
pvr2_i2c_track_done(hdw);
v4l2_device_unregister(&hdw->v4l2_dev);
pvr2_hdw_remove_usb_stuff(hdw);
mutex_lock(&pvr2_unit_mtx); do {
if ((hdw->unit_number >= 0) &&