V4L/DVB (10873): w9968cf: add v4l2_device.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/video/w9968cf.c

@@ -3495,12 +3495,14 @@ w9968cf_usb_probe(struct usb_interface* intf, const struct usb_device_id* id)
 	if (!cam)
 		return -ENOMEM;
 
+	err = v4l2_device_register(&udev->dev, &cam->v4l2_dev);
+	if (err)
+		goto fail0;
+
 	mutex_init(&cam->dev_mutex);
 	mutex_lock(&cam->dev_mutex);
 
 	cam->usbdev = udev;
-	/* NOTE: a local copy is used to avoid possible race conditions */
-	memcpy(&cam->dev, &udev->dev, sizeof(struct device));
 
 	DBG(2, "%s detected", symbolic(camlist, mod_id))
 
@@ -3549,7 +3551,7 @@ w9968cf_usb_probe(struct usb_interface* intf, const struct usb_device_id* id)
 	cam->v4ldev->minor = video_nr[dev_nr];
 	cam->v4ldev->release = video_device_release;
 	video_set_drvdata(cam->v4ldev, cam);
-	cam->v4ldev->parent = &cam->dev;
+	cam->v4ldev->v4l2_dev = &cam->v4l2_dev;
 
 	err = video_register_device(cam->v4ldev, VFL_TYPE_GRABBER,
 				    video_nr[dev_nr]);
@@ -3579,6 +3581,9 @@ w9968cf_usb_probe(struct usb_interface* intf, const struct usb_device_id* id)
 
 	usb_set_intfdata(intf, cam);
 	mutex_unlock(&cam->dev_mutex);
+
+	if (ovmod_load)
+		request_module("ovcamchip");
 	return 0;
 
 fail: /* Free unused memory */
@@ -3587,6 +3592,8 @@ w9968cf_usb_probe(struct usb_interface* intf, const struct usb_device_id* id)
 	if (cam->v4ldev)
 		video_device_release(cam->v4ldev);
 	mutex_unlock(&cam->dev_mutex);
+	v4l2_device_unregister(&cam->v4l2_dev);
+fail0:
 	kfree(cam);
 	return err;
 }
@@ -3622,9 +3629,11 @@ static void w9968cf_usb_disconnect(struct usb_interface* intf)
 
 		mutex_unlock(&cam->dev_mutex);
 
-		if (!cam->users)
+		if (!cam->users) {
+			v4l2_device_unregister(&cam->v4l2_dev);
 			kfree(cam);
 		}
+	}
 
 	up_write(&w9968cf_disconnect);
 }
@@ -3650,9 +3659,6 @@ static int __init w9968cf_module_init(void)
 	KDBG(2, W9968CF_MODULE_NAME" "W9968CF_MODULE_VERSION)
 	KDBG(3, W9968CF_MODULE_AUTHOR)
 
-	if (ovmod_load)
-		request_module("ovcamchip");
-
 	if ((err = usb_register(&w9968cf_usb_driver)))
 		return err;
 

drivers/media/video/w9968cf.h

@@ -33,6 +33,7 @@
 #include <linux/rwsem.h>
 #include <linux/mutex.h>
 
+#include <media/v4l2-device.h>
 #include <media/ovcamchip.h>
 
 #include "w9968cf_vpp.h"
@@ -195,10 +196,9 @@ enum w9968cf_vpp_flag {
 
 /* Main device driver structure */
 struct w9968cf_device {
-	struct device dev; /* device structure */
-
 	enum w9968cf_model_id id;   /* private device identifier */
 
+	struct v4l2_device v4l2_dev;
 	struct video_device* v4ldev; /* -> V4L structure */
 	struct list_head v4llist;    /* entry of the list of V4L cameras */
 
@@ -291,13 +291,13 @@ struct w9968cf_device {
 	if ( ((specific_debug) && (debug == (level))) ||                      \
 	     ((!specific_debug) && (debug >= (level))) ) {                    \
 		if ((level) == 1)                                             \
-			dev_err(&cam->dev, fmt "\n", ## args);                \
+			v4l2_err(&cam->v4l2_dev, fmt "\n", ## args);          \
 		else if ((level) == 2 || (level) == 3)                        \
-			dev_info(&cam->dev, fmt "\n", ## args);               \
+			v4l2_info(&cam->v4l2_dev, fmt "\n", ## args);         \
 		else if ((level) == 4)                                        \
-			dev_warn(&cam->dev, fmt "\n", ## args);               \
+			v4l2_warn(&cam->v4l2_dev, fmt "\n", ## args);         \
 		else if ((level) >= 5)                                        \
-			dev_info(&cam->dev, "[%s:%d] " fmt "\n",              \
+			v4l2_info(&cam->v4l2_dev, "[%s:%d] " fmt "\n",        \
 				 __func__, __LINE__ , ## args);               \
 	}                                                                     \
 }
@@ -321,7 +321,7 @@ struct w9968cf_device {
 
 #undef PDBG
 #define PDBG(fmt, args...)                                                    \
-dev_info(&cam->dev, "[%s:%d] " fmt "\n", __func__, __LINE__ , ## args);
+v4l2_info(&cam->v4l2_dev, "[%s:%d] " fmt "\n", __func__, __LINE__ , ## args);
 
 #undef PDBGG
 #define PDBGG(fmt, args...) do {;} while(0); /* nothing: it's a placeholder */