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>

2 files changed, 10 insertions, 5 deletions

diff --git a/drivers/media/video/bt8xx/bttv-driver.c b/drivers/media/video/bt8xx/bttv-driver.c
index 6db5e4e73397..20dff7c316eb 100644
--- a/drivers/media/video/bt8xx/bttv-driver.c
+++ b/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");
diff --git a/drivers/media/video/videodev.c b/drivers/media/video/videodev.c
index caa4f736468a..46848e2ae476 100644
--- a/drivers/media/video/videodev.c
+++ b/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