capture-example.c crash on close_device()

capture-example.c crash on close_device()

[Sean]

Hi,

I have compiled kernel 2.6.30 from kernel.org, and I have also compiled 
capture-example.c from the mercurial depository. These work on laptop 
hardware, but on my DM&P e-box 2300SX (with vortex86 cpu), 
capture-example.c crashes the system. Complete lockup, no keyboard, etc. 
I turned on all debuging in gspca_main, i.e. options gspca_main 
debug=0x1FF. I also put print statements in capture-example.c in main() 
before each function call. Here is the output below. Has anyone had this 
problem?

-------
# capture-example -r
<snip>
gspca: packet [28] o:28644 l:126
gspca: add t:2 l:126
gspca: packet [31] o:31713 l:630
pac207: SOF found, bytes to analyze: 630. Frame starts at byte #19
gspca: add t:3 l:14
gspca: frame complete len:26496 q:1 i:0 o:1
gspca: add t:1 l:0
gspca: add t:2 l:600
gspca: poll
gspca: read (202752)
gspca: dqbuf
gspca: frame wait q:1 i:0 o:0
gspca: autogain: lum: 252, desired: 102, steps: 5
gspca: dqbuf 1
gspca: qbuf 1
gspca: qbuf q:0 i:0 o:0
.stop_capturing()
uninit_device()
close_device()
gspca: capture-example close
gspca: kill transfer
gspca: isoc irq
gspca: isoc irq
gspca: isoc irq

Re: capture-example.c crash on close_device()

[Sean]

Hans,

What do you think is causing this? pac207 driver.

Sean

Sean wrote:
> Hi,
>
> I have compiled kernel 2.6.30 from kernel.org, and I have also 
> compiled capture-example.c from the mercurial depository. These work 
> on laptop hardware, but on my DM&P e-box 2300SX (with vortex86 cpu), 
> capture-example.c crashes the system. Complete lockup, no keyboard, 
> etc. I turned on all debuging in gspca_main, i.e. options gspca_main 
> debug=0x1FF. I also put print statements in capture-example.c in 
> main() before each function call. Here is the output below. Has anyone 
> had this problem?
>
> -------
> # capture-example -r
> <snip>
> gspca: packet [28] o:28644 l:126
> gspca: add t:2 l:126
> gspca: packet [31] o:31713 l:630
> pac207: SOF found, bytes to analyze: 630. Frame starts at byte #19
> gspca: add t:3 l:14
> gspca: frame complete len:26496 q:1 i:0 o:1
> gspca: add t:1 l:0
> gspca: add t:2 l:600
> gspca: poll
> gspca: read (202752)
> gspca: dqbuf
> gspca: frame wait q:1 i:0 o:0
> gspca: autogain: lum: 252, desired: 102, steps: 5
> gspca: dqbuf 1
> gspca: qbuf 1
> gspca: qbuf q:0 i:0 o:0
> .stop_capturing()
> uninit_device()
> close_device()
> gspca: capture-example close
> gspca: kill transfer
> gspca: isoc irq
> gspca: isoc irq
> gspca: isoc irq
> -- 
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Re: capture-example.c crash on close_device()

[Sean]

I'm still having trouble with capture-example.c completely locking up my 
system. The same os image on other hardware works fine. Where do I start 
looking? What can I do to debug this issue?

Sean

Sean wrote:
> Hi,
>
> I have compiled kernel 2.6.30 from kernel.org, and I have also 
> compiled capture-example.c from the mercurial depository. These work 
> on laptop hardware, but on my DM&P e-box 2300SX (with vortex86 cpu), 
> capture-example.c crashes the system. Complete lockup, no keyboard, 
> etc. I turned on all debuging in gspca_main, i.e. options gspca_main 
> debug=0x1FF. I also put print statements in capture-example.c in 
> main() before each function call. Here is the output below. Has anyone 
> had this problem?
>
> -------
> # capture-example -r
> <snip>
> gspca: packet [28] o:28644 l:126
> gspca: add t:2 l:126
> gspca: packet [31] o:31713 l:630
> pac207: SOF found, bytes to analyze: 630. Frame starts at byte #19
> gspca: add t:3 l:14
> gspca: frame complete len:26496 q:1 i:0 o:1
> gspca: add t:1 l:0
> gspca: add t:2 l:600
> gspca: poll
> gspca: read (202752)
> gspca: dqbuf
> gspca: frame wait q:1 i:0 o:0
> gspca: autogain: lum: 252, desired: 102, steps: 5
> gspca: dqbuf 1
> gspca: qbuf 1
> gspca: qbuf q:0 i:0 o:0
> .stop_capturing()
> uninit_device()
> close_device()
> gspca: capture-example close
> gspca: kill transfer
> gspca: isoc irq
> gspca: isoc irq
> gspca: isoc irq
> -- 
> To unsubscribe from this list: send the line "unsubscribe linux-media" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
>