Cinergy T2 Kernel Oops on Linkstation Live V1 (Marvel Orion ARM Architecture)

Hello all,

I have a Cinergy T2 Usb Box connected to my Linkstation NAS running Debian Testing armel
and a 2.6.25.1 vanilla Kernel.
the Cinergy module loads just fine but when I try to tune a channel I get a kernel Oops ( see below ).
What I've tried so far:
asking the google crystal ball... no realy good answer...

different kernel:
vanilla 2.6.25.1
orion git repositry

used this kernels with hg repositries of
v4l-dvb and v4l-dvb-experimental

This is the output of a w_scan run:

mythvdr:/usr/src/w_scan-20080105# ./w_scan
w_scan version 20080105
Info: using DVB adapter auto detection.
   Found DVB-T frontend. Using adapter /dev/dvb/adapter0/frontend0
-_-_-_-_ Getting frontend capabilities-_-_-_-_
frontend TerraTec/qanu USB2.0 Highspeed DVB-T Receiver supports
INVERSION_AUTO
QAM_AUTO
TRANSMISSION_MODE_AUTO
GUARD_INTERVAL_AUTO
HIERARCHY_AUTO
FEC_AUTO
-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_
177500:
184500:
191500:
198500:
205500:
212500:
219500:
226500:
474000: no signal(0x07)
482000:
490000:
498000:
506000: signal ok (I999B8C999D999M999T999G999Y999)
514000:
522000:
530000:
538000: signal ok (I999B8C999D999M999T999G999Y999)
546000:
554000:
562000:
570000:
578000:
586000: signal ok (I999B8C999D999M999T999G999Y999)
594000:
602000:
610000:
618000:
626000:
634000:
642000:
650000:
658000:
666000:
674000:
682000:
690000: signal ok (I999B8C999D999M999T999G999Y999)
698000:
706000:
714000:
722000:
730000:
738000:
746000: signal ok (I999B8C999D999M999T999G999Y999)
754000:
762000: signal ok (I999B8C999D999M999T999G999Y999)
770000:
778000:
786000:
794000:
802000:
810000:
818000:
826000:
834000:
842000:
850000:
858000:
tune to: :506000:I999B8C999D999M999T999G999Y999:T:27500:

here w_scan stops responding, no CTRL-C or kill can remove the process

and this is what I get on the serial console:

usb 2-1: new high speed USB device using orion-ehci and address 2/ttusb-budg usb 2-1: configuration #1 chosen from 1 choice
usb 2-1: New USB device found, idVendor=0ccd, idProduct=0038
usb 2-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0 usb 2-1: Product: Cinergy T
usb 2-1: Manufacturer: TerraTec GmbH
DVB: registering new adapter (TerraTec/qanu USB2.0 Highspeed DVB-T Receiver)
input: TerraTec/qanu USB2.0 Highspeed DVB-T Receiver remote control as /class/input/input0
usbcore: registered new interface driver cinergyT2

Unable to handle kernel NULL pointer dereference at virtual address 00000000
pgd = c5b3c000
[00000000] *pgd=05bfa031, *pte=00000000, *ppte=00000000
Internal error: Oops: 817 [#1] PREEMPT
Modules linked in: evdev cinergyT2 dvb_core
CPU: 0    Not tainted  (2.6.25.1 #3)
PC is at dma_cache_maint+0x40/0x88
LR is at usb_hcd_submit_urb+0x14c/0x894
pc : [<c002f08c>]    lr : [<c02909c8>]    psr: 20000013

sp : c5ae3c90 ip : c5ae3ca0 fp : c5ae3c9c
r10: c758cae8 r9 : 00000000 r8 : 00000020
r7 : c758dc00 r6 : c758cae0 r5 : 00000002 r4 : ffc50000 r3 : 00000000 r2 : 00000002 r1 : ffc50200 r0 : ffc50000
Flags: nzCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user
Control: a005317f Table: 05b3c000 DAC: 00000015 Process w_scan (pid: 7384, stack limit = 0xc5ae2268)

Stack: (0xc5ae3c90 to 0xc5ae4000)

3c80: c5ae3d54 c5ae3ca0 c02909c8
c002f05c
3ca0: c758dc00 c18f9c19 000000d2 c0411180 c5ae3d1c c5ae3cc0 c0072680 c003b5c8
3cc0: 00000044 00000001 c5ae2000 00000000 00000000 00000044 c0411184 00000000
3ce0: c5ae2000 00000000 00000001 00000000 20000013 00000001 000000d2 c0411180
3d00: 00000000 00000000 00100002 c7c3b3a0 c5ae3d74 c5ae3d20 c00728c0 c00723a8
3d20: 00000000 00000000 c0411184 c69f4000 00000002 00000000 00000020 00000000
3d40: c648ee70 c067e26c c5ae3d74 c5ae3d58 c0291494 c029088c c067e000 c067e000
3d60: 00000000 c067e1d8 c5ae3d8c c5ae3d78 bf014280 c0291264 ffffffff c067e000
3d80: c5ae3dac c5ae3d90 bf0143f4 bf014244 c067e000 c067e1e8 00000000 c067e1d8
3da0: c5ae3dcc c5ae3db0 bf014590 bf0143e0 c0084814 c8900000 c067e000 00000000
3dc0: c5ae3df4 c5ae3dd0 bf003f94 bf014548 000010dc 00000000 c8a15000 00000000
3de0: c8a15004 c067e230 c5ae3e34 c5ae3df8 bf0016e8 bf003e90 c009be90 00000000
3e00: c5ae3e2c c5ae3e10 c00941d0 c01d55a8 c8a15038 c8a15000 c5ae3e68 00000000
3e20: c8a1506c c067e26c c5ae3e5c c5ae3e38 bf001adc bf001464 bedf6b9c c5ae3e68
3e40: 0000403c 403c6f2b 00000001 00000000 c5ae3f14 c5ae3e60 bf0001b0 bf0018e0
3e60: bf012a48 c77d1240 00000000 00000000 00000000 00000000 00000000 00000000
3e80: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
3ea0: 00000005 c5ae3eb0 c008f6e4 c0074bbc c77d1240 c5ae3f00 ffffff9c 00000004
3ec0: c5a6d000 00000000 c5ae3ef4 c5ae3ed8 c008f7e4 c008f590 00000000 c5a6d000
3ee0: c5ae2000 00000002 c5ae3f64 c77d1240 bedf6b9c 403c6f2b c77d1240 c0028c28
3f00: c5ae2000 00000000 c5ae3f2c c5ae3f18 bf000e40 bf0000dc bf0018d0 00000000
3f20: c5ae3f4c c5ae3f30 c009e6f0 bf000e34 40000013 c648ee70 c77d1240 bedf6b9c
3f40: c5ae3f7c c5ae3f50 c009e9d4 c009e684 c77d1240 00000004 c5ae3f94 00000004
3f60: bedf6b9c 403c6f2b c0028c28 c5ae2000 c5ae3fa4 c5ae3f80 c009ea34 c009e71c
3f80: 00000005 00000000 bedf74fc 0001a2f4 00000000 00000036 00000000 c5ae3fa8
3fa0: c0028a80 c009ea04 bedf74fc 0001a2f4 00000004 403c6f2b bedf6b9c 00000005
3fc0: bedf74fc 0001a2f4 00000000 00000036 00000001 00000000 bedf7bd4 0001a250
3fe0: 0001a180 bedf6b90 0000a7e4 400e210c a0000010 00000004 00000000 00000000

Backtrace:
[<c002f04c>] (dma_cache_maint+0x0/0x88) from [<c02909c8>] 
(usb_hcd_submit_urb+0x14c/0x894)
[<c029087c>] (usb_hcd_submit_urb+0x0/0x894) from [<c0291494>] 
(usb_submit_urb+0x240/0x25c)
[<c0291254>] (usb_submit_urb+0x0/0x25c) from [<bf014280>] 
(cinergyt2_submit_stream_urb+0x4c/0xa4 [cinergyT2])
r7:c067e1d8 r6:00000000 r5:c067e000 r4:c067e000
[<bf014234>] (cinergyt2_submit_stream_urb+0x0/0xa4 [cinergyT2]) from 
[<bf0143f4>] (cinergyt2_start_stream_xfer+0x24/0xa0 [cinergyT2])

r4:c067e000
[<bf0143d0>] (cinergyt2_start_stream_xfer+0x0/0xa0 [cinergyT2]) from [<bf014590>] (cinergyt2_start_feed+0x58/0x7c [cinergyT2]) r7:c067e1d8 r6:00000000 r5:c067e1e8 r4:c067e000
[<bf014538>] (cinergyt2_start_feed+0x0/0x7c [cinergyT2]) from [<bf003f94>] (dmx_section_feed_start_filtering+0x114/0x19c [dvb_core]) r6:00000000 r5:c067e000 r4:c8900000
[<bf003e80>] (dmx_section_feed_start_filtering+0x0/0x19c [dvb_core]) from [<bf0016e8>] (dvb_dmxdev_filter_start+0x294/0x47c [dvb_core]) r8:c067e230 r7:c8a15004 r6:00000000 r5:c8a15000 r4:00000000 [<bf001454>] (dvb_dmxdev_filter_start+0x0/0x47c [dvb_core]) from [<bf001adc>] (dvb_demux_do_ioctl+0x20c/0x478 [dvb_core]) [<bf0018d0>] (dvb_demux_do_ioctl+0x0/0x478 [dvb_core]) from [<bf0001b0>] (dvb_usercopy+0xe4/0x170 [dvb_core])
[<bf0000cc>] (dvb_usercopy+0x0/0x170 [dvb_core]) from [<bf000e40>] (dvb_demux_ioctl+0x1c/0x28 [dvb_core])
[<bf000e24>] (dvb_demux_ioctl+0x0/0x28 [dvb_core]) from [<c009e6f0>] (vfs_ioctl+0x7c/0x98)
[<c009e674>] (vfs_ioctl+0x0/0x98) from [<c009e9d4>] (do_vfs_ioctl+0x2c8/0x2e8)
r6:bedf6b9c r5:c77d1240 r4:c648ee70
[<c009e70c>] (do_vfs_ioctl+0x0/0x2e8) from [<c009ea34>] (sys_ioctl+0x40/0x64)
r9:c5ae2000 r8:c0028c28 r6:403c6f2b r5:bedf6b9c r4:00000004 [<c009e9f4>] (sys_ioctl+0x0/0x64) from [<c0028a80>] (ret_fast_syscall+0x0/0x2c)
r7:00000036 r6:00000000 r5:0001a2f4 r4:bedf74fc

Code: 9a000001 e15c0003 3a000001 e3a03000 (e5833000)
---[ end trace ed5fadb8ba4b59e4 ]---

At this point the serial console becomes a one way connection, I get output but it doesn't take input anymore.
ssh logins to the box are still possible and also init 6 works and the box does a clean reboot.
Additional information: the Cinergy works fine when attached to my AMD64 Desktop running debian etch and the debian
kernel 2.6.18-6-amd64
it also works on my NSLU2 NAS running debian etch for ARM and kernel 2.6.18-6-ixp4xx
I tried to compile this debian kernel for the Linkstation but it did not boot... will try to find out what's wrong
but would rather use the vanilla kernel.

I hope I gathered all needed informations to help me fix this problem.

Greetings
Ingo

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Hello everyone...

a few days ago I bought e Pinnacle PCTV200e to try if it works with my Linkstation. After getting some drivers for it from here:
http://ubuntuforums.org/showthread.php?t=511676&page=8
As result I just got the same kernel oops, only triggered by the dvb_usb module instead of the cinergyT2 one.

Today I found a patch sent to this list on 01/20/2008 by Michele Scorcia. Although it is for kernel 2.6.20.4 and written to fix a problem on a mips platform the description of the problem came close to mine. So I applied it to the usb-urb.c from the above archive and built the modules. After that the oops was gone and the PCTV runs without problems. The cinergy driver still triggers the oops but i think that's normal cause it does not use the dvb-usb module and would need a separate patch.

The new cinergyT2 driver from Tomi Orava works just fine so I give it a chance instead of fixing the old one.
Another reason for this is that I tried both receivers on my desktop with the same kernel and v4l-dvb sources as I use on the Linkstation and couldn't make them run both at the same time. dmesg shows no errors but w_scan hangs when both drivers are loaded. Either receiver alone works great but together none does.
This problem does not exist with the new driver.

Here's the patch I use, only difference to the one from Michele Scorcia are the line numbers:

Hi Ingo,

Quoted 2 lines · Ingo Peukes

Hello everyone...

Quoted 6 lines

a few days ago I bought e Pinnacle PCTV200e to try if it works with my Linkstation. After getting some drivers for it from here:
http://ubuntuforums.org/showthread.php?t=511676&page=8
As result I just got the same kernel oops, only triggered by the dvb_usb module instead of the cinergyT2 one.

Is it the same ManufacturerID/VendorID as the cinergyT2 device or did you make some adaptations to make your Pinnacle device to work with the cinergyT2 driver?

Quoted 7 lines

Today I found a patch sent to this list on 01/20/2008 by Michele Scorcia. Although it is for kernel 2.6.20.4 and written to fix a problem on a mips platform the description of the problem came close to mine. So I applied it to the usb-urb.c from the above archive and built the modules. After that the oops was gone and the PCTV runs without problems. The cinergy driver still triggers the oops but i think that's normal cause it does not use the dvb-usb module and would need a separate patch.

Quoted 9 lines

The new cinergyT2 driver from Tomi Orava works just fine so I give it a chance instead of fixing the old one.
Another reason for this is that I tried both receivers on my desktop with the same kernel and v4l-dvb sources as I use on the Linkstation and couldn't make them run both at the same time. dmesg shows no errors but w_scan hangs when both drivers are loaded. Either receiver alone works great but together none does.
This problem does not exist with the new driver.

I hope Tomi will be able to finalize his patch so we will be able to replace the old one. The old driver is monolithic and does not follow the dvb framework evolutions/bug corrections.

Quoted 5 lines

Here's the patch I use, only difference to the one from Michele Scorcia are the line numbers:

Please post this patch in an email with [PATCH] in subject and with the Signed-off-by: name <email> line so that maintainers get aware of the patch, and don't miss it.
See: http://www.linuxtv.org/v4lwiki/index.php/How_to_submit_patches

Thanks
Thierry

Hello Thierry,

Thierry Merle wrote:

Quoted 2 lines

I hope Tomi will be able to finalize his patch so we will be able to replace the old one. The old driver is monolithic and does not follow the dvb framework evolutions/bug corrections.

Hope so too, as I stated in my reply to the 'Tester wanted ...' thread it works good except the signal recognition is very poor compared to the old driver.