V4L/DVB (4368): Bttv: use class_device_create_file and handle errors

Revert bttv-driver.c from video_device_create_file() to use
class_device_create_file() again.  video_device_create_file() is only
available when V4L1 is on.
Proper error checking is added for failure of class_device_create_file().
Will print error message and unroll partially created sysfs entries.

Signed-off-by: Trent Piepho <xyzzy@speakeasy.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

drivers/media/video/bt8xx/bttv-driver.c

@@ -3923,8 +3923,12 @@ static int __devinit bttv_register_video(struct bttv *btv)
 		goto err;
 	printk(KERN_INFO "bttv%d: registered device video%d\n",
 	       btv->c.nr,btv->video_dev->minor & 0x1f);
-
-	video_device_create_file(btv->video_dev, &class_device_attr_card);
+	if (class_device_create_file(&btv->video_dev->class_dev,
+				     &class_device_attr_card)<0) {
+		printk(KERN_ERR "bttv%d: class_device_create_file 'card' "
+		       "failed\n", btv->c.nr);
+		goto err;
+	}
 
 	/* vbi */
 	btv->vbi_dev = vdev_init(btv, &bttv_vbi_template, "vbi");

drivers/media/video/videodev.c

@@ -1578,12 +1578,13 @@ int video_register_device(struct video_device *vfd, int type, int nr)
 	if (ret) {
 		printk(KERN_ERR "%s: class_device_register failed\n",
 		       __FUNCTION__);
-		return ret;
+		goto fail_minor;
 	}
 	ret = class_device_create_file(&vfd->class_dev, &class_device_attr_name);
 	if (ret < 0) {
-		printk(KERN_WARNING "%s error: %d\n", __FUNCTION__, ret);
-		return ret;
+		printk(KERN_ERR "%s: class_device_create_file 'name' failed\n",
+		       __FUNCTION__);
+		goto fail_classdev;
 	}
 
 #if 1