Comment 32 for bug 654791

It seems that i have same problem. It hasn't work after I upgraded to ubuntu 10.10

device: ID 2040:7050 Hauppauge Nova-T Stick

dmesg:

[2035927.342478] usb 2-4.7: USB disconnect, address 5
[2035927.390367] dvb-usb: Afatech AF9015 DVB-T USB2.0 stick successfully deinitialized and disconnected.
[2035933.210123] usb 2-4.7: new high speed USB device using ehci_hcd and address 9
[2035933.570763] dib0700: loaded with support for 14 different device-types
[2035933.571052] dvb-usb: found a 'Hauppauge Nova-T Stick' in cold state, will try to load a firmware
[2035933.590217] dvb-usb: downloading firmware from file 'dvb-usb-dib0700-1.20.fw'
[2035933.791964] dib0700: firmware started successfully.
[2035934.300495] dvb-usb: found a 'Hauppauge Nova-T Stick' in warm state.
[2035934.300561] dvb-usb: will pass the complete MPEG2 transport stream to the software demuxer.
[2035934.300722] DVB: registering new adapter (Hauppauge Nova-T Stick)
[2035934.672969] DVB: registering adapter 0 frontend 0 (DiBcom 7000MA/MB/PA/PB/MC)...
[2035934.676968] MT2060: successfully identified (IF1 = 1257)
[2035935.266686] input: IR-receiver inside an USB DVB receiver as /devices/pci0000:00/0000:00:1d.7/usb2/2-4/2-4.7/input/input8
[2035935.266766] dvb-usb: schedule remote query interval to 50 msecs.
[2035935.266770] dvb-usb: Hauppauge Nova-T Stick successfully initialized and connected.
[2035935.266994] usbcore: registered new interface driver dvb_usb_dib0700
[2035960.245886] BUG: unable to handle kernel NULL pointer dereference at 0000000000000012
[2035960.245892] IP: [<ffffffff8143da8e>] i2c_transfer+0x1e/0xf0
[2035960.245899] PGD 12935b067 PUD 1270a3067 PMD 0
[2035960.245902] Oops: 0000 [#1] SMP
[2035960.245905] last sysfs file: /sys/devices/pci0000:00/0000:00:1d.7/usb2/2-4/2-4.7/input/input8/name
[2035960.245907] CPU 0
[2035960.245908] Modules linked in: dvb_usb_dib0700 dib7000p dib0090 dib7000m dib0070 dib8000 dib3000mc dibx000_common isofs udf ip6table_filter ip6_tables binfmt_misc vboxnetadp vboxnetflt vboxdrv ipt_MASQUERADE iptable_nat nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_state nf_conntrack ipt_REJECT xt_tcpudp iptable_filter ip_tables x_tables bridge stp kvm_intel kvm parport_pc ppdev mt2060 snd_hda_codec_intelhdmi snd_hda_codec_realtek nfsd snd_hda_intel snd_hda_codec exportfs af9013 snd_hwdep nfs snd_pcm snd_seq_midi snd_rawmidi snd_seq_midi_event lockd snd_seq fscache dvb_usb_af9015 snd_timer dvb_usb snd_seq_device nfs_acl dvb_core snd soundcore auth_rpcgss snd_page_alloc sunrpc psmouse serio_raw asus_atk0110 lp parport joydev sha256_generic cryptd aes_x86_64 aes_generic dm_crypt hid_logitech ff_memless i915 drm_kms_helper drm usbhid hid firewire_ohci pata_marvell firewire_core crc_itu_t i2c_algo_bit video r8169 mii intel_agp output
[2035960.245956]
[2035960.245959] Pid: 9535, comm: gxine.real Not tainted 2.6.35-24-generic #42-Ubuntu P5Q-EM/System Product Name
[2035960.245961] RIP: 0010:[<ffffffff8143da8e>] [<ffffffff8143da8e>] i2c_transfer+0x1e/0xf0
[2035960.245964] RSP: 0018:ffff88009ff27b88 EFLAGS: 00010296
[2035960.245966] RAX: 00000000ffffffa1 RBX: 00000000000000eb RCX: 0000000000000000
[2035960.245968] RDX: 0000000000000002 RSI: ffff88009ff27bd8 RDI: 0000000000000002
[2035960.245970] RBP: ffff88009ff27bc8 R08: ffff8800cd808ba0 R09: 000000000e008d80
[2035960.245971] R10: dead000000200200 R11: dead000000100100 R12: 0000000000000000
[2035960.245973] R13: 0000000000000001 R14: 0000000000000002 R15: 0000000000000000
[2035960.245975] FS: 00007f924c059700(0000) GS:ffff880001e00000(0000) knlGS:0000000000000000
[2035960.245977] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[2035960.245979] CR2: 0000000000000012 CR3: 000000012862a000 CR4: 00000000000406f0
[2035960.245981] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[2035960.245982] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
[2035960.245984] Process gxine.real (pid: 9535, threadinfo ffff88009ff26000, task ffff880127250000)
[2035960.245986] Stack:
[2035960.245987] ffff8800794eba80 ffff880128ed1da0 0000000000000020 00000000000000eb
[2035960.245990] <0> 0000000000000000 0000000000000001 ffffc90024abe000 0000000000000000
[2035960.245993] <0> ffff88009ff27c28 ffffffffa065827e 0000000200000010 ffff88009ff27c08
[2035960.245996] Call Trace:
[2035960.246001] [<ffffffffa065827e>] dib7000p_read_word+0x6e/0xc0 [dib7000p]
[2035960.246005] [<ffffffffa0659ffb>] dib7000p_pid_filter_ctrl+0x2b/0xa0 [dib7000p]
[2035960.246009] [<ffffffffa02762ee>] ? usb_urb_submit+0x3e/0x84 [dvb_usb]
[2035960.246014] [<ffffffffa0698db9>] stk70x0p_pid_filter_ctrl+0x19/0x1c [dvb_usb_dib0700]
[2035960.246017] [<ffffffffa0275632>] dvb_usb_ctrl_feed+0x152/0x170 [dvb_usb]
[2035960.246021] [<ffffffffa0275683>] dvb_usb_start_feed+0x13/0x20 [dvb_usb]
[2035960.246027] [<ffffffffa02453b3>] dmx_section_feed_start_filtering+0xf3/0x190 [dvb_core]
[2035960.246032] [<ffffffffa0243547>] dvb_dmxdev_filter_start+0x1b7/0x3e0 [dvb_core]
[2035960.246036] [<ffffffffa0243da8>] dvb_demux_do_ioctl+0x488/0x580 [dvb_core]
[2035960.246041] [<ffffffffa0241aff>] dvb_usercopy+0xbf/0x1a0 [dvb_core]
[2035960.246045] [<ffffffffa0243920>] ? dvb_demux_do_ioctl+0x0/0x580 [dvb_core]
[2035960.246050] [<ffffffffa02423ef>] dvb_demux_ioctl+0x4f/0x80 [dvb_core]
[2035960.246053] [<ffffffff81162f0d>] vfs_ioctl+0x3d/0xd0
[2035960.246056] [<ffffffff811637e1>] do_vfs_ioctl+0x81/0x340
[2035960.246058] [<ffffffff81163b21>] sys_ioctl+0x81/0xa0
[2035960.246062] [<ffffffff8100a0f2>] system_call_fastpath+0x16/0x1b
[2035960.246063] Code: e8 98 6d f4 ff c9 c3 eb 04 90 90 90 90 55 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 ec 18 0f 1f 44 00 00 b8 a1 ff ff ff 41 89 d6 <48> 8b 57 10 48 89 fb 49 89 f5 48 83 3a 00 0f 84 8e 00 00 00 65
[2035960.246087] RIP [<ffffffff8143da8e>] i2c_transfer+0x1e/0xf0
[2035960.246090] RSP <ffff88009ff27b88>
[2035960.246091] CR2: 0000000000000012
[2035960.246097] ---[ end trace a178436cd18c4fd3 ]---