Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6

* 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6: (505 commits)
  [media] af9015: Fix max I2C message size when used with tda18271
  [media] IR: initialize ir_raw_event in few more drivers
  [media] Guard a divide in v4l1 compat layer
  [media] imon: fix nomouse modprobe option
  [media] imon: remove redundant change_protocol call
  [media] imon: fix my egregious brown paper bag w/rdev/idev split
  [media] cafe_ccic: Configure ov7670 correctly
  [media] ov7670: allow configuration of image size, clock speed, and I/O method
  [media] af9015: support for DigitalNow TinyTwin v3 [1f4d:9016]
  [media] af9015: map DigitalNow TinyTwin v2 remote
  [media] DigitalNow TinyTwin remote controller
  [media] af9015: RC fixes and improvements
  videodev2.h.xml: Update to reflect the latest changes at videodev2.h
  [media] v4l: document new Bayer and monochrome pixel formats
  [media] DocBook/v4l: Add missing formats used on gspca cpia1 and sn9c2028
  [media] firedtv: add parameter to fake ca_system_ids in CA_INFO
  [media] tm6000: fix a macro coding style issue
  tm6000: Remove some ugly debug code
  [media] Nova-S-Plus audio line input
  [media] [RFC,1/1] V4L2: Use new CAP bits in existing RDS capable drivers
  ...

1 files changed, 12 insertions, 3 deletions

diff --git a/drivers/media/video/usbvision/usbvision-i2c.c b/drivers/media/video/usbvision/usbvision-i2c.c
index 42ba28785750..e3bbae26e3ce 100644
--- a/drivers/media/video/usbvision/usbvision-i2c.c
+++ b/drivers/media/video/usbvision/usbvision-i2c.c
@@ -211,6 +211,9 @@ int usbvision_i2c_register(struct usb_usbvision *usbvision)
 		0x42 >> 1, 0x40 >> 1,	/* SAA7114, SAA7115 and SAA7118 */
 		I2C_CLIENT_END };
 
+	if (usbvision->registered_i2c)
+		return 0;
+
 	memcpy(&usbvision->i2c_adap, &i2c_adap_template,
 	       sizeof(struct i2c_adapter));
 
@@ -248,7 +251,7 @@ int usbvision_i2c_register(struct usb_usbvision *usbvision)
 		   hit-and-miss. */
 		mdelay(10);
 		v4l2_i2c_new_subdev(&usbvision->v4l2_dev,
-				&usbvision->i2c_adap, "saa7115",
+				&usbvision->i2c_adap, NULL,
 				"saa7115_auto", 0, saa711x_addrs);
 		break;
 	}
@@ -258,16 +261,18 @@ int usbvision_i2c_register(struct usb_usbvision *usbvision)
 		struct tuner_setup tun_setup;
 
 		sd = v4l2_i2c_new_subdev(&usbvision->v4l2_dev,
-				&usbvision->i2c_adap, "tuner",
+				&usbvision->i2c_adap, NULL,
 				"tuner", 0, v4l2_i2c_tuner_addrs(ADDRS_DEMOD));
 		/* depending on whether we found a demod or not, select
 		   the tuner type. */
 		type = sd ? ADDRS_TV_WITH_DEMOD : ADDRS_TV;
 
 		sd = v4l2_i2c_new_subdev(&usbvision->v4l2_dev,
-				&usbvision->i2c_adap, "tuner",
+				&usbvision->i2c_adap, NULL,
 				"tuner", 0, v4l2_i2c_tuner_addrs(type));
 
+		if (sd == NULL)
+			return -ENODEV;
 		if (usbvision->tuner_type != -1) {
 			tun_setup.mode_mask = T_ANALOG_TV | T_RADIO;
 			tun_setup.type = usbvision->tuner_type;
@@ -275,14 +280,18 @@ int usbvision_i2c_register(struct usb_usbvision *usbvision)
 			call_all(usbvision, tuner, s_type_addr, &tun_setup);
 		}
 	}
+	usbvision->registered_i2c = 1;
 
 	return 0;
 }
 
 int usbvision_i2c_unregister(struct usb_usbvision *usbvision)
 {
+	if (!usbvision->registered_i2c)
+		return 0;
 
 	i2c_del_adapter(&(usbvision->i2c_adap));
+	usbvision->registered_i2c = 0;
 
 	PDEBUG(DBG_I2C,"i2c bus for %s unregistered", usbvision->i2c_adap.name);