Re: [Spca50x-devs] "Fatal exception in interrupt" with Multiple SPC300NC Cams

[Ulisses Penna <ulissespenna@xxxxxxxxxxxx>]

Volkan

    AFAIK, the spca driver was written for v4l calls
and kernel > 2.6.16 has v4l2 calls ....
    Maybe thats the problem ...

Regards. Ulisses Penna

--- Volkan YAZICI <yazicivo@xxxxxxxxxxxx> escreveu:

> Hi,
> 
> First thanks so much for providing a module with
> such a wide-range
> webcam support. But I've some problems with the
> stability of the
> software.
> 
> I've been trying to use your spca5xx kernel module
> for a project of the
> company, but I'm having some real trouble in here
> while trying to use
> multiple (actually 2) Philips spc300nc webcams
> concurrently. Here's the
> related kernel panic screen:
> 
> invalid opcode: 0000 [#1]
> PREEMPT
> Modules linked in: spca5xx videodev
> CPU:    0
> EIP:    0060:[<c011ad25>]      Not tainted VLI
> EFLAGS: 00010246      (2.6.17.1   #9)
> EIP is at tasklet_action+0x2d/0x54
> eax: 00000000  ebx: cb090008  ecx: 0000000b  edx:
> cb090008
> esi: c03ed348  edi: 0000000a  ebp: 0042a007   esp:
> c03b9f8c
> ds: 007b   es: 007b  ss: 0068
> Process swapper (pid: 0, threadinfo=c03b8000
> task=c035e400)
> Stack: 00000001 c011ab23 c03ed348 00000046 00099100
> c03af800 c011ab59 c03b8000
>        c011ac05 c0104e7e c0103842 c03b8000 c035e400
> c03b8000 00099199 c03af800
>        0042a007 00000000 c035007b c035007b ffffff05
> c0100b15 00000060 00000246
> Call Trace:
>  <c011ab23> __do_softirq+0x77/0x84  <c011ab59>
> do_softirq+0x29/0x2c
>  <c011ac05> irq_exit+0x35/0x38  <c0104e7e>
> do_IRQ+0x1e/0x24
>  <c0103842> common_interrupt+0x1a/0x20  <c0100b15>
> default_idle+0x25/0x54
>  <c01100b91> cpu_idle+0x49/0x60  <c03ba670>
> start_kernel+0x158/0x16c
> Code: 8b 1d 00 d3 3e c0 c7 05 00 d3 3e c0 00 00 00
> 00 fb 85 db 74 23 90 89 da 8b
>  42 08 85 c0 8b 1b 75 19 9f b3 42 04 19 c0 85 c0 75
> 02 <0f> 0b ff 72 10 ff 52 0c
>  528 85 db 75 de 5b c3 fa a1 00 d3 3e c0
> EIP: [<c011ad25>] tasklet_action+0x2d/0x54 SS:ESP
> 0068:c03b9f8c
>  <0>Kernel panic - not syncing: Fatal exception in
> interrupt
> 
> I'm using kernel 2.6.17.1 and here's my .config
> file:
> http://www.students.itu.edu.tr/~yazicivo/config.txt
> (Yes, in this config
> file, kernel is not preemptible despite above output
> is; that's because
> that I've tried both a preempt and a non-preempt
> kernel, but the results
> were same: kernel panic.)
> 
> Also this problem occurs again when I try a
> spc200nc, spc300nc
> combination too.
> 
> I'd be very appreciated if you can urgently help me
> to fix this problem.
> Please just tell me if you need any further
> information. (At least, it'll
> be welcome if you can suggest any webcam model
> working stable when used
> concurrently.)
> 
> Regards.
> 
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