Comment 7 for bug 732243

Description of problem:
Logitech Orbicam (046d:0896) only works with Cheese when cheese is started multiple consecutive times. To my totally untrained eye it seems that the wrong video device is created/released.

Version-Release number of selected component (if applicable):
2.6.35.6-43.fc14.x86_64

How reproducible:
Start cheese, quit cheese, start cheese again, quit again etc. Continue this until the cam led lights up and the cam starts working.

Steps to Reproduce:
1. modprobe -v gspca_vc032x
2. start cheese - green led on cam does not light up and no images from cam
3. stop cheese and start cheese again (cam led may light up & cam may work) or stop cheese again and start cheese again (cam led may light up & cam works)

Actual results:
Cam does not work when cheese is started for the first time

Expected results:
Cam led lights up & the cam works

Additional info:

Steps I did to reproduce this with output. Please note the messages were gspca creates video0 but releases video1 or creates video1 and releases video0 when cheese is terminated (and the cam did not work).

Manually insert gspca_vc032x
===============================================================================
Oct 17 15:45:12 luna kernel: [10579.920588] Linux video capture interface: v2.00
Oct 17 15:45:12 luna kernel: [10579.923621] gspca: main v2.9.0 registered
Oct 17 15:45:12 luna kernel: [10579.925051] gspca: probing 046d:0896
Oct 17 15:45:12 luna kernel: [10579.925055] vc032x: Sensor POxxxx
Oct 17 15:45:12 luna kernel: [10579.927710] gspca: video0 created
Oct 17 15:45:12 luna kernel: [10579.927733] usbcore: registered new interface driver vc032x
Oct 17 15:45:12 luna kernel: [10579.927736] vc032x: registered

Start cheese - green cam led does not light up, cam does not work
===============================================================================
Oct 17 15:45:21 luna kernel: [10588.479761] usb 1-7: USB disconnect, address 10
Oct 17 15:45:21 luna kernel: [10588.480195] gspca: video0 disconnect
Oct 17 15:45:22 luna kernel: [10590.052229] gspca: set alt 0 err -19
Oct 17 15:45:22 luna kernel: [10590.052239] gspca: usb_submit_urb alt 7 err -19
Oct 17 15:45:23 luna kernel: [10590.258171] usb 1-7: new high speed USB device using ehci_hcd and address 11
Oct 17 15:45:23 luna kernel: [10590.414303] usb 1-7: New USB device found, idVendor=046d, idProduct=0896
Oct 17 15:45:23 luna kernel: [10590.414312] usb 1-7: New USB device strings: Mfr=1, Product=2, SerialNumber=0
Oct 17 15:45:23 luna kernel: [10590.414320] usb 1-7: Product: Camera
Oct 17 15:45:23 luna kernel: [10590.414324] usb 1-7: Manufacturer: OEM
Oct 17 15:45:23 luna kernel: [10590.417140] gspca: probing 046d:0896
Oct 17 15:45:23 luna kernel: [10590.417147] vc032x: Sensor POxxxx
Oct 17 15:45:23 luna kernel: [10590.419179] gspca: video1 created
Oct 17 15:45:38 luna kernel: [10605.581941] gspca: video0 released

Quit cheese with menu Cheese -> Quit

Start cheese 2nd time - green cam led does not light up, cam does not work
===============================================================================
Oct 17 15:45:49 luna kernel: [10616.396640] usb 1-7: USB disconnect, address 11
Oct 17 15:45:49 luna kernel: [10616.397215] gspca: video1 disconnect
Oct 17 15:45:50 luna kernel: [10617.969170] gspca: set alt 0 err -19
Oct 17 15:45:50 luna kernel: [10617.969180] gspca: usb_submit_urb alt 7 err -19
Oct 17 15:45:50 luna kernel: [10618.175144] usb 1-7: new high speed USB device using ehci_hcd and address 12
Oct 17 15:45:51 luna kernel: [10618.331444] usb 1-7: New USB device found, idVendor=046d, idProduct=0896
Oct 17 15:45:51 luna kernel: [10618.331453] usb 1-7: New USB device strings: Mfr=1, Product=2, SerialNumber=0
Oct 17 15:45:51 luna kernel: [10618.331461] usb 1-7: Product: Camera
Oct 17 15:45:51 luna kernel: [10618.331465] usb 1-7: Manufacturer: OEM
Oct 17 15:45:51 luna kernel: [10618.334395] gspca: probing 046d:0896
Oct 17 15:45:51 luna kernel: [10618.334402] vc032x: Sensor POxxxx
Oct 17 15:45:51 luna kernel: [10618.336454] gspca: video0 created
Oct 17 15:45:55 luna kernel: [10623.018118] gspca: video1 released

Quit cheese with Cheese -> Quit

Start cheese 3rd time - green cam led lights up, cam works
===============================================================================
No output in /var/log/messages

Output from lsusb
===============================================================================

# lsusb
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 002: ID 147e:2016 Upek Biometric Touchchip/Touchstrip Fingerprint Sensor
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 002: ID 046d:c016 Logitech, Inc. Optical Wheel Mouse
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 007: ID 046d:0896 Logitech, Inc. OrbiCam
Bus 001 Device 006: ID 1234:5678
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

Output from v4l-info
===============================================================================

# v4l-info /dev/video1

### v4l2 device info [/dev/video1] ###
general info
    VIDIOC_QUERYCAP
 driver : "vc032x"
 card : "Camera"
 bus_info : "usb-0000:00:1d.7-7"
 version : 2.9.0
 capabilities : 0x5000001 [VIDEO_CAPTURE,READWRITE,STREAMING]

standards

inputs
    VIDIOC_ENUMINPUT(0)
 index : 0
 name : "vc032x"
 type : CAMERA
 audioset : 0
 tuner : 0
 std : 0x0 []
 status : 0x0 []

video capture
    VIDIOC_ENUM_FMT(0,VIDEO_CAPTURE)
 index : 0
 type : VIDEO_CAPTURE
 flags : 0
 description : "YVYU"
 pixelformat : 0x55595659 [YVYU]
    VIDIOC_G_FMT(VIDEO_CAPTURE)
 type : VIDEO_CAPTURE
 fmt.pix.width : 640
 fmt.pix.height : 480
 fmt.pix.pixelformat : 0x55595659 [YVYU]
 fmt.pix.field : NONE
 fmt.pix.bytesperline : 640
 fmt.pix.sizeimage : 614400
 fmt.pix.colorspace : SRGB
 fmt.pix.priv : 0

controls
    VIDIOC_QUERYCTRL(BASE+0)
 id : 9963776
 type : INTEGER
 name : "Brightness"
 minimum : 0
 maximum : 255
 step : 1
 default_value : 128
 flags : 0
    VIDIOC_QUERYCTRL(BASE+1)
 id : 9963777
 type : INTEGER
 name : "Contrast"
 minimum : 0
 maximum : 255
 step : 1
 default_value : 127
 flags : 0
    VIDIOC_QUERYCTRL(BASE+2)
 id : 9963778
 type : INTEGER
 name : "Saturation"
 minimum : 1
 maximum : 127
 step : 1
 default_value : 63
 flags : 0

### video4linux device info [/dev/video1] ###
general info
    VIDIOCGCAP
 name : "Camera"
 type : 0x1 [CAPTURE]
 channels : 1
 audios : 0
 maxwidth : 640
 maxheight : 480
 minwidth : 48
 minheight : 32

channels
    VIDIOCGCHAN(0)
 channel : 0
 name : "vc032x"
 tuners : 0
 flags : 0x0 []
 type : CAMERA
 norm : 0

tuner
ioctl VIDIOCGTUNER: Invalid argument

audio
    VIDIOCGAUDIO
 audio : 0
 volume : 0
 bass : 0
 treble : 0

picture
    VIDIOCGPICT
 brightness : 32896
 hue : 0
 colour : 32247
 contrast : 32639
 whiteness : 0
 depth : 8
 palette : unknown

buffer
ioctl VIDIOCGFBUF: Invalid argument

window
    VIDIOCGWIN
 x : 0
 y : 0
 width : 640
 height : 480
 chromakey : 0
 flags : 0

Please let me know if you need more info. Thanks!