You patch work good with DVB-S2 tt3200 card but when i install those to modules 2 dvb-t usb cards stop working.
kernel 2.6.21-1-686
DVB-T usb card: AVerTV Volar DVB-T USB
module what its use: dvb-usb-dib0700
after that patch(diff what you posted earlier this start happening)
dvb-usb: found a 'AVerMedia AVerTV DVB-T Volar' in warm state.
i2c_adapter i2c-1: SMBus Quick command not supported, can't probe for chips
dvb-usb: will pass the complete MPEG2 transport stream to the software demuxer.
DVB: registering new adapter (AVerMedia AVerTV DVB-T Volar).
i2c_adapter i2c-2: SMBus Quick command not supported, can't probe for chips
DVB: registering frontend 0 (DiBcom 7000MA/MB/PA/PB/MC)...
MT2060: successfully identified (IF1 = 1220)
dvb-usb: AVerMedia AVerTV DVB-T Volar successfully initialized and connected.
dvb-usb: found a 'AVerMedia AVerTV DVB-T Volar' in warm state.
i2c_adapter i2c-3: SMBus Quick command not supported, can't probe for chips
dvb-usb: will pass the complete MPEG2 transport stream to the software demuxer.
DVB: registering new adapter (AVerMedia AVerTV DVB-T Volar).
i2c_adapter i2c-4: SMBus Quick command not supported, can't probe for chips
DVB: registering frontend 1 (DiBcom 7000MA/MB/PA/PB/MC)...
MT2060: successfully identified (IF1 = 1220)
dvb-usb: AVerMedia AVerTV DVB-T Volar successfully initialized and connected.
usbcore: registered new interface driver dvb_usb_dib0700
BUG: unable to handle kernel NULL pointer dereference at virtual address 00000000
printing eip:
00000000
*pde = 00000000
Oops: 0000 [#1]
SMP
Modules linked in: mt2060 dvb_usb_dib0700 dib7000m dib7000p dvb_usb dvb_core dvb_pll dib3000mc dibx000_common sit tunnel4 xt_tcpudp iptable_filter ip_tables x_tables binfmt_misc nfs tcp_diag inet_diag nfsd exportfs lockd nfs_acl sunrpc ppdev lp button ac battery ipv6 dm_snapshot tun eeprom i2c_i801 via686a w83781d hwmon_vid i2c_isa 8021q aes loop sd_mod snd_via82xx gameport snd_ac97_codec tsdev ac97_bus snd_pcm_oss snd_mixer_oss snd_pcm snd_page_alloc snd_mpu401_uart snd_seq_dummy snd_seq_oss snd_seq_midi snd_seq_midi_event snd_seq floppy parport_pc parport rtc snd_timer snd_rawmidi snd_seq_device firmware_class snd i2c_viapro psmouse serio_raw pcspkr soundcore i2c_core shpchp pci_hotplug evdev via_agp agpgart reiserfs dm_mirror dm_mod usb_storage ide_disk generic via82cxxx ide_core via_rhine mii ehci_hcd uhci_hcd usbcore ata_generic sata_via libata scsi_mod r8169 thermal processor fan
CPU: 0
EIP: 0060:[<00000000>] Not tainted VLI
EFLAGS: 00210286 (2.6.21-1-686 #1)
EIP is at _stext+0x3fefecdc/0x14
eax: c1a83000 ebx: 40246f4c ecx: 00000000 edx: eb8390d4
esi: e2098a80 edi: eb839278 ebp: 00000000 esp: e2933c3c
ds: 007b es: 007b fs: 00d8 gs: 0033 ss: 0068
Process vdr (pid: 8639, ti=e2932000 task=e2784a90 task.ti=e2932000)
Stack: f8a9da87 e2933e94 e2933e94 e2933e94 e2933ea4 00000000 c017225a 00000000
00000000 c1a83000 eb839000 fffffe00 e2784a90 c011d236 00100100 00200200
eb839a44 e2933ef4 00001000 00008017 00000000 c0181fe8 00001000 e2933cbc
Call Trace:
[<f8a9da87>] dvb_frontend_ioctl+0x5f0/0xd5a [dvb_core]
[<c017225a>] __pollwait+0x0/0xac
[<c011d236>] default_wake_function+0x0/0xc
[<c0181fe8>] __getblk+0x23/0x26f
[<c011b428>] __wake_up+0x32/0x43
[<c011b0fe>] __activate_task+0x1c/0x29
[<c011d22c>] try_to_wake_up+0x39b/0x3a5
[<c0181fbb>] __find_get_block+0x17c/0x186
[<f897bf7f>] search_by_key+0x169/0xd21 [reiserfs]
[<c011af06>] __wake_up_common+0x32/0x55
[<c011b428>] __wake_up+0x32/0x43
[<c023c69c>] sock_def_readable+0x39/0x63
[<c01c80ec>] __next_cpu+0x12/0x21
[<c011bad8>] find_busiest_group+0x1b4/0x4c5
[<c0102ff1>] __switch_to+0xfe/0x131
[<c029cebd>] __sched_text_start+0x675/0x73b
[<c0139c1f>] futex_wake+0xa3/0xad
[<c015a050>] find_extend_vma+0x12/0x49
[<c01397dc>] get_futex_key+0x3a/0xe3
[<c029d611>] schedule_timeout+0x13/0x8d
[<c015a050>] find_extend_vma+0x12/0x49
[<f8a97105>] dvb_usercopy+0xa9/0x100 [dvb_core]
[<f8a9718e>] dvb_generic_ioctl+0x32/0x3b [dvb_core]
[<f8a9d497>] dvb_frontend_ioctl+0x0/0xd5a [dvb_core]
[<c0170e6c>] do_ioctl+0x4c/0x62
[<c01710c6>] vfs_ioctl+0x244/0x256
[<c013b258>] sys_futex+0x98/0xab
[<c0171124>] sys_ioctl+0x4c/0x64
[<c0103d8c>] syscall_call+0x7/0xb
=======================
Code: Bad EIP value.
EIP: [<00000000>] _stext+0x3fefecdc/0x14 SS:ESP 0068:e2933c3c
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