[mpeg2] Kernel OOPS when doing ioctl GCHAN

[Bram Stolk <bram@sara.nl>]

Hi there,


I get a kernel oops when doing a GCHAN ioctl.
Does anyone mannage to do a GCHAN on his kfir device?
Or is it known to be broken?

thanks,


     Bram

The code:


  struct video_channel vchan;
  printf("Getting channel info, size = %d bytes\n", sizeof(vchan));

  ret=ioctl(handle, VIDIOCGCHAN, &vchan);
  if (ret==-1)
    perror("ioctl VIDIOCGCHAN failed");
  else
    printf("got vchan\n");



The system log:


kfir: Found i2c device at: 0x4a
kfir: decoder status=4
kfir: Kfir board revision 5e
Unable to load 'micro/altera_keb_plx_5e.rbf'.
loaded microcode with length 32385
kfir: Reset Altera
kfir: done
kfir: Reset Kfir and PLL ... done
kfir: segment: 0  Done
kfir: segment: 1  Done
kfir: segment: 2  Done
kfir: segment: 3  Done
kfir: segment: 4  Done
kfir: segment: 5  Done
kfir: done
saa7113: version=11
saa7113: attaching SAA7113 at 0x4a
kfir: saa7113 decoder attached
kfir: i2c attach [SAA7113]
i2c-core.o: client [SAA7113] registered to adapter [kfir #1](pos. 0).
saa7113: status=c0
saa7113: attached to adapter kfir #1
i2c-core.o: adapter kfir #1 registered as adapter 1.
kfir: Found i2c device at: 0x4a
kfir: decoder status=4
sizeof video_channel according to kernel is: 48
Unable to handle kernel paging request at virtual address 5170b700
 printing eip:
d08eabab
*pde = 00000000
Oops: 0000
CPU:    1
EIP:    0010:[<d08eabab>]
EFLAGS: 00010287
eax: 80df7d60   ebx: 00000000   ecx: 0000000c   edx: cee79f20
esi: 5170b700   edi: cee79f20   ebp: ffffffe7   esp: cee79ee0
ds: 0018   es: 0018   ss: 0018
Process kfirtst (pid: 299, stackpage=cee79000)
Stack: ceec0c20 bffffcc0 c0307602 ffffffe7 cefe2000 00000000 cee79f03 00000001 
       0a1b40af c01b0780 cefe2000 0000000a 00000001 40016025 00000286 00000000 
       0804a7f2 00000000 0804c6d8 bffffd1c 08049b66 0804c6d8 0804a7f2 0000000b 
Call Trace: [<c01b0780>] [<c01ae40b>] [<c01d14a7>] [<d0913b00>] [<c0142347>] 
   [<c0106d7b>] 

Code: f3 a5 8d 74 24 40 bb 30 00 00 00 0f 18 06 b8 00 e0 ff ff 21 


-- 
------------------------------------------------------------------------------
 Bram Stolk, VR Specialist.
 SARA Academic Computing Services Amsterdam, PO Box 94613, 1090 GP  AMSTERDAM
 email: bram@sara.nl   Phone +31-20-5923059  Fax +31-20-6683167

 "I heard if you play the NT-4.0-CD backwards, you get a satanic message."
 "Thats nothing, if you play it forward, it installs NT-4.0"
------------------------------------------------------------------------------