Re: [pwc] aMSN keeps using /dev/video0 after webcam session is closed

[Luc Saillard <>]

On Tue, Jul 25, 2006 at 03:05:58PM +0300, Antti Huopana wrote:
> Hi
> 
> After aMSN webcam session is closed I can't use webcam anymore without
> closing aMSN first. Bug is also blocking webcam from other programs
> (ekiga, camorama,...).
> 
>       $ fuser -v /dev/video0
>                            USER        PID ACCESS COMMAND
>       /dev/video0          user       4070 ....m  wish
> 
> 
> aMSN developers claim problem is in pwc driver. Do you agree? If you do,
> is there anything we can do about it?

I've try ekiga, and didn't have the same problem.

The kernel doesn't call close() of the driver when you do a close(). If you
keep a reference (like a mmap) the kernel doesn't call the close function.
Using small application for testing the driver (using the capture.c for
example doesn't produce this bug). Do you have an (small with tk layer)
application to test it ?

Luc
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