Problem mit media-build-experimental ddbridge Treiber unter Debian Jessie

[   35.124857] WARNING: You are using an experimental version of the media stack.
        As the driver is backported to an older kernel, it doesn't offer
        enough quality for its usage in production.
        Use it with care.
Latest git patches (needed if you report a bug to linux-media@vger.kernel.org):
        1555f3bf5cc172e7d23c2b8db10d656d15bec13e [media] saa7164: fix compiler warning
        ebf984bb151e9952cccd060d3aba0b4d30a87e81 [media] v4l2: replace s_mbus_fmt by set_fmt in bridge drivers
        5eab4983777ba913efb42dd0f177b0dcdbd4f3d9 [media] v4l2: replace try_mbus_fmt by set_fmt in bridge drivers
        experimental: 82186b8b60da1c55e956c89d78a8de4e670d5a29 experimental/ddbridge: Include LNBH25 driver in build process.
        v4l-dvb-saa716x: 3b9fce66666a32ddf2b94ac7e72e540773f3e353 saa716x_ff: Avoid sleeping in fifo_worker
[   35.864453] Digital Devices PCIE bridge driver 0.9.18, Copyright (C) 2010-15 Digital Devices GmbH
[   35.864963] DDBridge driver detected: Digital Devices Cine S2 V6 DVB adapter
[   35.864992] DDBridge: HW 00010007 REGMAP 00010003
[   35.866728] Port 0: Link 0, Link Port 0 (TAB 1): DUAL DVB-S2
[   35.867635] Port 1: Link 0, Link Port 1 (TAB 2): DUAL DVB-S2
[   35.869064] Port 2: Link 0, Link Port 2 (TAB 3): NO MODULE
[   35.870866] 0 netstream channels
[   35.870873] DVB: registering new adapter (DDBridge)
[   35.870876] DVB: registering new adapter (DDBridge)
[   35.870878] DVB: registering new adapter (DDBridge)
[   35.870880] DVB: registering new adapter (DDBridge)
[   36.188018] Attaching STV0900 demodulator(1) Cut=0x20
[   36.287182] LNBx2x attached on addr=a
[   36.419041] stv6110x_attach: Attaching STV6110x
[   36.419048] attach tuner input 0 adr 60
[   36.419177] ddbridge 0000:03:00.0: DVB: registering adapter 0 frontend 0 (STV090x Multistandard)...
[   36.456026] Attaching STV0900 demodulator(2) Cut=0x20
[   36.456262] LNBx2x attached on addr=8
[   36.456272] stv6110x_attach: Attaching STV6110x
[   36.456275] attach tuner input 1 adr 63
[   36.456394] ddbridge 0000:03:00.0: DVB: registering adapter 1 frontend 0 (STV090x Multistandard)...
[   36.628025] Attaching STV0900 demodulator(1) Cut=0x20
[   36.628261] LNBx2x attached on addr=b
[   36.628272] stv6110x_attach: Attaching STV6110x
[   36.628275] attach tuner input 2 adr 60
[   36.628414] ddbridge 0000:03:00.0: DVB: registering adapter 2 frontend 0 (STV090x Multistandard)...
[   36.664025] Attaching STV0900 demodulator(2) Cut=0x20
[   36.664260] LNBx2x attached on addr=9
[   36.664269] stv6110x_attach: Attaching STV6110x
[   36.664272] attach tuner input 3 adr 63
[   36.664398] ddbridge 0000:03:00.0: DVB: registering adapter 3 frontend 0 (STV090x Multistandard)...
[   83.976118] nfsd: last server has exited, flushing export cache
[   84.007478] NFSD: Using /var/lib/nfs/v4recovery as the NFSv4 state recovery directory
[   84.007506] NFSD: starting 90-second grace period (net ffffffff81ae7440)
[   99.653887] BUG: unable to handle kernel NULL pointer dereference at           (null)
[   99.654008] IP: [<ffffffff814713b0>] i2c_transfer+0x10/0xc0
[   99.654088] PGD 0
[   99.654124] Oops: 0000 [#1] SMP
[   99.654178] Modules linked in: stv6110x(OE) lnbp21(OE) stv090x(OE) ddbridge(OE-) cxd2099(OE) dvb_core(OE) media(OE) nfsd(E) auth_rpcgss(E) nfs_acl(E) nfs(E) lockd(E) grace(E) fscache(E) sunrpc(E) i915(E) video(E) drm_kms_helper(E) drm(E) ppdev(E) evdev(E) iTCO_wdt(E) iTCO_vendor_support(E) lpc_ich(E) i2c_algo_bit(E) mfd_core(E) dcdbas(E) rng_core(E) serio_raw(E) shpchp(E) pcspkr(E) i2c_i801(E) 8250_fintek(E) parport_pc(E) parport(E) button(E) acpi_cpufreq(E) tpm_tis(E) tpm(E) processor(E) fuse(E) autofs4(E) ext4(E) crc16(E) mbcache(E) jbd2(E) sg(E) sd_mod(E) ata_generic(E) ata_piix(E) libata(E) psmouse(E) scsi_mod(E) ehci_pci(E) uhci_hcd(E) ehci_hcd(E) fjes(E) tg3(E) ptp(E) pps_core(E) libphy(E) usbcore(E) usb_common(E)
[   99.655253] CPU: 0 PID: 1728 Comm: rmmod Tainted: G           OE   4.5.0-0.bpo.2-amd64 #1 Debian 4.5.4-1~bpo8+1
[   99.655365] Hardware name: Dell Inc.                 OptiPlex GX620               /0F8098, BIOS A01 05/24/2005
[   99.655474] task: ffff8800c9955100 ti: ffff8800c9a3c000 task.ti: ffff8800c9a3c000
[   99.655560] RIP: 0010:[<ffffffff814713b0>]  [<ffffffff814713b0>] i2c_transfer+0x10/0xc0
[   99.655656] RSP: 0018:ffff8800c9a3fd68  EFLAGS: 00010282
[   99.655715] RAX: 0000000000000000 RBX: ffffffffc061bec4 RCX: 0000000000000090
[   99.655797] RDX: 0000000000000001 RSI: ffff8800c9a3fd88 RDI: ffffffffc061bec4
[   99.655877] RBP: 0000000000000000 R08: ffffea00032a439f R09: ffff8800c84ae478
[   99.655957] R10: 0000000000000bb8 R11: 0000000000000000 R12: ffffc900008ad100
[   99.656008] R13: ffffc9000089d408 R14: 0000000000000000 R15: 000055a25bec21d0
[   99.656008] FS:  00007f55b5da1700(0000) GS:ffff8800cf800000(0000) knlGS:0000000000000000
[   99.656008] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[   99.656008] CR2: 0000000000000000 CR3: 00000000c9a1c000 CR4: 00000000000006f0
[   99.656008] Stack:
[   99.656008]  ffff8800c7a1b828 0000000000000000 ffffc900008ad100 ffffffffc031d1a0
[   99.656008]  ffff000100000007 ffff8800c8441260 0000000081d1f75e ffffffffc031d1f3
[   99.656008]  ffff8800c7a1b828 ffffffffc05e4398 ffffc9000089d378 0000000000000000
[   99.656008] Call Trace:
[   99.656008]  [<ffffffffc031d1a0>] ? lnbp21_set_voltage+0x70/0xb0 [lnbp21]
[   99.656008]  [<ffffffffc031d1f3>] ? lnbp21_release+0x13/0x30 [lnbp21]
[   99.656008]  [<ffffffffc05e4398>] ? dvb_frontend_detach+0x18/0x80 [dvb_core]
[   99.656008]  [<ffffffffc0610085>] ? dvb_input_detach.isra.21+0xf5/0x170 [ddbridge]
[   99.656008]  [<ffffffffc0611e96>] ? ddb_remove+0xa6/0x3a0 [ddbridge]
[   99.656008]  [<ffffffff81356fc6>] ? pci_device_remove+0x36/0xb0
[   99.656008]  [<ffffffff814375a5>] ? __device_release_driver+0x95/0x140
[   99.662741]  [<ffffffff8143773e>] ? driver_detach+0xae/0xb0
[   99.662741]  [<ffffffff81436645>] ? bus_remove_driver+0x55/0xd0
[   99.662741]  [<ffffffff81355756>] ? pci_unregister_driver+0x26/0x70
[   99.662741]  [<ffffffffc0617e91>] ? module_exit_ddbridge+0xc/0x17b [ddbridge]
[   99.662741]  [<ffffffff810f84cd>] ? SyS_delete_module+0x1ad/0x260
[   99.662741]  [<ffffffff815ba236>] ? system_call_fast_compare_end+0xc/0x6b
[   99.662741] Code: ff 89 c2 e9 ee fc ff ff 45 31 ff e9 3f fd ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 41 54 55 53 48 8b 47 10 48 89 fb <48> 83 38 00 74 74 65 8b 05 5b aa b9 7e a9 ff ff ff 7f 48 89 f5
[   99.662741] RIP  [<ffffffff814713b0>] i2c_transfer+0x10/0xc0
[   99.662741]  RSP <ffff8800c9a3fd68>
[   99.662741] CR2: 0000000000000000
[   99.663858] ---[ end trace 5693f318eb184745 ]---