ERROR IN LOGFILE

ERROR IN LOGFILE

[Sasa Ostrouska]

Hi to all of you !!

I played today with my quickcam and saw the following message in the
/var/log/messages 
I use slackware-current and I would like to know more about that.
Can somebody explain me how can I get rid of that error message ?




Nov 25 11:14:00 localhost kernel: usb 2-1: new full speed USB device
using address 3
Nov 25 11:14:00 localhost kernel: Linux video capture interface: v1.00
Nov 25 11:14:00 localhost kernel: quickcam: QuickCam USB camera found
(driver version QuickCam USB $Date: 2004/07/29 18:12:39 $)
Nov 25 11:14:00 localhost kernel: quickcam: Kernel:2.6.9 bus:2 class:FF
subclass:FF vendor:046D product:0850
Nov 25 11:14:00 localhost kernel: quickcam: Sensor VV6410 detected
Nov 25 11:14:00 localhost kernel: quickcam: Registered
device: /dev/video0
Nov 25 11:14:00 localhost kernel: usbcore: registered new driver
quickcam
Nov 25 11:14:01 localhost kernel: usbcore: registered new driver
snd-usb-audio
Nov 25 11:14:01 localhost kernel: usbcore: registered new driver audio
Nov 25 11:14:01 localhost kernel: drivers/usb/class/audio.c: v1.0.0:USB
Audio Class driver
Nov 25 11:14:05 localhost wait_for_sysfs[5761]: either wait_for_sysfs
(udev 042) needs an update to handle the device
'/class/video4linux/video0' properly (no device symlink) or the
sysfs-support of your device's driver needs to be fixed, please report
to <linux-hotplug-devel@lists.sourceforge.net>
Nov 25 11:14:05 localhost udev[5886]: configured rule in
'/etc/udev/rules.d/udev.rules' at line 104 applied, added symlink 'video
%n'
Nov 25 11:14:05 localhost udev[5886]: configured rule in
'/etc/udev/rules.d/udev.rules' at line 104 applied, 'video0' becomes
'v4l/video%n'
Nov 25 11:14:05 localhost udev[5886]: creating device node
'/dev/v4l/video0'
Nov 25 11:14:05 localhost udev[5888]: configured rule in
'/etc/udev/rules.d/udev.rules' at line 30 applied, 'controlC2' becomes
'snd/%k'
Nov 25 11:14:05 localhost udev[5888]: creating device node
'/dev/snd/controlC2'
Nov 25 11:14:05 localhost udev[5891]: configured rule in
'/etc/udev/rules.d/udev.rules' at line 86 applied, added symlink '%k'
Nov 25 11:14:05 localhost udev[5891]: configured rule in
'/etc/udev/rules.d/udev.rules' at line 86 applied, 'dsp2' becomes
'sound/%k'
Nov 25 11:14:05 localhost udev[5891]: creating device node
'/dev/sound/dsp2'
Nov 25 11:14:05 localhost udev[5893]: configured rule in
'/etc/udev/rules.d/udev.rules' at line 84 applied, added symlink '%k'
Nov 25 11:14:05 localhost udev[5893]: configured rule in
'/etc/udev/rules.d/udev.rules' at line 84 applied, 'audio2' becomes
'sound/%k'
Nov 25 11:14:05 localhost udev[5893]: creating device node
'/dev/sound/audio2'
Nov 25 11:14:05 localhost udev[5894]: configured rule in
'/etc/udev/rules.d/udev.rules' at line 88 applied, added symlink '%k'
Nov 25 11:14:05 localhost udev[5890]: configured rule in
'/etc/udev/rules.d/udev.rules' at line 32 applied, 'pcmC2D0c' becomes
'snd/%k'
Nov 25 11:14:05 localhost udev[5894]: configured rule in
'/etc/udev/rules.d/udev.rules' at line 88 applied, 'mixer2' becomes
'sound/%k'
Nov 25 11:14:05 localhost udev[5890]: creating device node
'/dev/snd/pcmC2D0c'
Nov 25 11:14:05 localhost udev[5894]: creating device node
'/dev/sound/mixer2'


Please CC me as I'm not on the list.
Best regards
-- 
Sasa Ostrouska <sasa.ostrouska@volja.net>



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Re: ERROR IN LOGFILE

[Kay Sievers]

On Thu, 2004-11-25 at 11:19 +0100, Sasa Ostrouska wrote:
> Hi to all of you !!
> 
> I played today with my quickcam and saw the following message in the
> /var/log/messages 
> I use slackware-current and I would like to know more about that.
> Can somebody explain me how can I get rid of that error message ?

> Nov 25 11:14:05 localhost wait_for_sysfs[5761]: either wait_for_sysfs
> (udev 042) needs an update to handle the device
> '/class/video4linux/video0' properly (no device symlink) or the
> sysfs-support of your device's driver needs to be fixed, please report
> to <linux-hotplug-devel@lists.sourceforge.net>

It's cause the driver of your camera does not create a link in sysfs to
the physical device behind the videodevice. This is needed for modern
hardware integration or udev's BUS= matches. 

How does "ls -l /sys/class/video4linux/video0" look like?

What's the name of the module? Is it in the stock kernel?


Kay



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Re: ERROR IN LOGFILE

[Sasa Ostrouska]

On Thu, 2004-11-25 at 17:10 +0100, Kay Sievers wrote:
> On Thu, 2004-11-25 at 11:19 +0100, Sasa Ostrouska wrote:
> > Hi to all of you !!
> > 
> > I played today with my quickcam and saw the following message in the
> > /var/log/messages 
> > I use slackware-current and I would like to know more about that.
> > Can somebody explain me how can I get rid of that error message ?
> 
> > Nov 25 11:14:05 localhost wait_for_sysfs[5761]: either wait_for_sysfs
> > (udev 042) needs an update to handle the device
> > '/class/video4linux/video0' properly (no device symlink) or the
> > sysfs-support of your device's driver needs to be fixed, please report
> > to <linux-hotplug-devel@lists.sourceforge.net>
> 
> It's cause the driver of your camera does not create a link in sysfs to
> the physical device behind the videodevice. This is needed for modern
> hardware integration or udev's BUS= matches. 
> 
> How does "ls -l /sys/class/video4linux/video0" look like?
> 
root@rc-vaio:/home/sasa# ls -l /sys/class/video4linux/video0/
total 0
-r--r--r--  1 root root 4096 2004-11-25 17:44 dev
-r--r--r--  1 root root 4096 2004-11-25 17:44 name
root@rc-vaio:/home/sasa#


> What's the name of the module? Is it in the stock kernel?
> 
The name of the module is quickcam and it is not in the stock kernel.
I compiled it from source. 


> 
> Kay
> 

If you need additional info let me know.
Rgds

-- 
Sasa Ostrouska <sasa.ostrouska@volja.net>



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Re: ERROR IN LOGFILE

[Kay Sievers]

On Thu, 2004-11-25 at 17:47 +0100, Sasa Ostrouska wrote:
> On Thu, 2004-11-25 at 17:10 +0100, Kay Sievers wrote:
> > On Thu, 2004-11-25 at 11:19 +0100, Sasa Ostrouska wrote:
> > > Hi to all of you !!
> > > 
> > > I played today with my quickcam and saw the following message in the
> > > /var/log/messages 
> > > I use slackware-current and I would like to know more about that.
> > > Can somebody explain me how can I get rid of that error message ?
> > 
> > > Nov 25 11:14:05 localhost wait_for_sysfs[5761]: either wait_for_sysfs
> > > (udev 042) needs an update to handle the device
> > > '/class/video4linux/video0' properly (no device symlink) or the
> > > sysfs-support of your device's driver needs to be fixed, please report
> > > to <linux-hotplug-devel@lists.sourceforge.net>
> > 
> > It's cause the driver of your camera does not create a link in sysfs to
> > the physical device behind the videodevice. This is needed for modern
> > hardware integration or udev's BUS= matches. 
> > 
> > How does "ls -l /sys/class/video4linux/video0" look like?
> > 
> root@rc-vaio:/home/sasa# ls -l /sys/class/video4linux/video0/
> total 0
> -r--r--r--  1 root root 4096 2004-11-25 17:44 dev
> -r--r--r--  1 root root 4096 2004-11-25 17:44 name
> root@rc-vaio:/home/sasa#
> 
> 
> > What's the name of the module? Is it in the stock kernel?
> > 
> The name of the module is quickcam and it is not in the stock kernel.
> I compiled it from source. 

You may bug the author of the driver to pass the physical device to the
driver core to get the links automatically created at the videodevice
registration.

As an example, for my ov511 usb-webcam it looks like this:

  [kay@pim ~]$ tree /sys/class/video4linux/video0/
  /sys/class/video4linux/video0/
  |-- bridge
  |-- brightness
  |-- contrast
  |-- custom_id
  |-- dev
  |-- device -> ../../../devices/pci0000:00/0000:00:1d.1/usb3/3-1
  |-- driver -> ../../../bus/usb/drivers/usb
  |-- exposure
  |-- hue
  |-- model
  |-- name
  |-- saturation
  `-- sensor

Good luck,
Kay



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