[linux-dvb] Re: TDA8290/TDA8275 with LNA

Nico Sabbi nicola_sabbi at fastwebnet.it
Tue Feb 27 01:35:28 CET 2007

Hartmut Hackmann wrote:

> I still haven't found a cause for the problem.
> A vague idea: what happens if you start an analogue application first?
> Hartmut

the analog tuning works without problem (and this reminds me that 
adding .tuner_config=2 to the trio entry in saa7134-cards.c triggered
the agc gain), but the dvb part still crashes:

tda1004x: tda1004x_write_byteI: success reg=0x7, data=0x82, ret=1
tda1004x: tda1004x_disable_tuner_i2c
tda1004x: tda1004x_write_mask: reg=0x7, mask=0x2, data=0x0
tda1004x: tda1004x_read_byte: reg=0x7
tda1004x: tda1004x_read_byte: success reg=0x7, data=0x82, ret=2
tda1004x: tda1004x_write_byteI: reg=0x7, data=0x80
tda1004x: tda1004x_write_byteI: success reg=0x7, data=0x80, ret=1
tda1004x: tda1004x_write_mask: reg=0x1, mask=0x1, data=0x1
tda1004x: tda1004x_read_byte: reg=0x1
BUG: unable to handle kernel paging request at virtual address a55a5a5a
  printing eip:
*pde = 00000000
Oops: 0000 [#1]
Modules linked in: saa7134_alsa tda827x saa7134_dvb video_buf_dvb 
tda1004x tuner saa7134 video_buf ir_kbd_i2c ir_common af_packet 
eepro100 mii binfmt_misc cpufreq_ondemand cpufreq_conservative 
cpufreq_powersave p4_clockmod speedstep_lib snd_seq_dummy snd_seq_oss 
snd_seq_midi_event snd_seq snd_seq_device snd_pcm_oss snd_mixer_oss 
snd_intel8x0 snd_ac97_codec ac97_bus snd_pcm snd_timer snd_page_alloc 
snd soundcore ipv6 eth1394 sbs i2c_ec ide_cd cdrom ohci1394 ieee1394 
loop nls_iso8859_15 ntfs intel_agp agpgart mt352 stv0299 
b2c2_flexcop_pci b2c2_flexcop dvb_core firmware_class dvb_pll i2c_core 
fuse sn9c102 compat_ioctl32 videodev v4l1_compat tsdev v4l2_common 
usbmouse video thermal processor fan dock usbhid ff_memless container 
button battery ac ehci_hcd uhci_hcd usbcore sd_mod ahci ata_piix 
libata scsi_mod
CPU:    0
EIP:    0060:[<e0f5713b>]    Not tainted VLI
EFLAGS: 00010286   (2.6.20 #1)
EIP is at tda1004x_read_byte+0x62/0xee [tda1004x]
eax: 00000029   ebx: 00000001   ecx: c011abe4   edx: a55a5a5a
esi: d2c61500   edi: cfb73ee4   ebp: cfb73ef4   esp: cfb73eb8
ds: 007b   es: 007b   ss: 0068
Process kdvb-fe-1 (pid: 4497, ti=cfb72000 task=dfcbcaa0 task.ti=cfb72000)
Stack: e0f58d20 e0f58a85 00000001 00000009 00000002 00000000 00000001 
        00010000 00000001 cfb73ee6 0100b223 00000001 00000001 d2c61500 
        e0f5720b e0f58d64 e0f58a98 00000001 00000001 00000001 d2c61500 
Call Trace:
  [<c0103c49>] show_trace_log_lvl+0x19/0x2e
  [<c0103cfb>] show_stack_log_lvl+0x9d/0xa5
  [<c0103f99>] show_registers+0x1a0/0x277
  [<c01042b1>] die+0x116/0x1f0
  [<c02c030a>] do_page_fault+0x44a/0x51b
  [<c02beb3c>] error_code+0x7c/0x84
  [<e0f5720b>] tda1004x_write_mask+0x44/0x63 [tda1004x]
  [<e0f586e4>] tda1004x_set_fe+0x106/0x492 [tda1004x]
  [<e0bd0727>] dvb_frontend_swzigzag_autotune+0x1ad/0x1d6 [dvb_core]
  [<e0bd0e5a>] dvb_frontend_swzigzag+0x1ab/0x208 [dvb_core]
  [<e0bd1a08>] dvb_frontend_thread+0x209/0x2a6 [dvb_core]
  [<c012b4f7>] kthread+0xb4/0xd9
  [<c01039e7>] kernel_thread_helper+0x7/0x10
Code: 00 8d 45 f2 89 45 ec 83 3d 80 a7 f5 e0 00 74 18 89 54 24 08 c7 
44 24 04 85 8a f5 e0 c7 04 24 20 8d f5 e0 e8 d0 40 1c df 8b 56 04 <66> 
0f b6 02 66 89 45 d8 66 0f b6 02 66 89 45 e4 8d 55 d8 b9 02
EIP: [<e0f5713b>] tda1004x_read_byte+0x62/0xee [tda1004x] SS:ESP 

"Without a frontend, mplayer is useless" - someone in mplayer-users

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