[linux-dvb] saa7134: fixed pointer in tuner callback

Hartmut Hackmann hartmut.hackmann at t-online.de
Wed Apr 9 22:30:00 CEST 2008


Hi,

sioux schrieb:
> 
> 
> Hartmut Hackmann ha scritto:
>> Hi,
>>
>> sioux schrieb:
>>> Hi all!
>>>
>>> here similar problem with 7134_alsa module:
>>>
>>> saa7134_alsa: disagrees about version of symbol snd_ctl_add
>>> saa7134_alsa: Unknown symbol snd_ctl_add
>>> saa7134_alsa: disagrees about version of symbol snd_pcm_new
>>> saa7134_alsa: Unknown symbol snd_pcm_new
>>> saa7134_alsa: disagrees about version of symbol snd_card_register
>>> saa7134_alsa: Unknown symbol snd_card_register
>>> saa7134_alsa: disagrees about version of symbol snd_card_free
>>> saa7134_alsa: Unknown symbol snd_card_free
>>> saa7134_alsa: disagrees about version of symbol snd_pcm_stop
>>> saa7134_alsa: Unknown symbol snd_pcm_stop
>>> saa7134_alsa: disagrees about version of symbol snd_ctl_new1
>>> saa7134_alsa: Unknown symbol snd_ctl_new1
>>> saa7134_alsa: disagrees about version of symbol snd_card_new
>>> saa7134_alsa: Unknown symbol snd_card_new
>>> saa7134_alsa: disagrees about version of symbol snd_pcm_lib_ioctl
>>> saa7134_alsa: Unknown symbol snd_pcm_lib_ioctl
>>> saa7134_alsa: disagrees about version of symbol snd_pcm_set_ops
>>> saa7134_alsa: Unknown symbol snd_pcm_set_ops
>>> saa7134_alsa: disagrees about version of symbol 
>>> snd_pcm_hw_constraint_integer
>>> saa7134_alsa: Unknown symbol snd_pcm_hw_constraint_integer
>>> saa7134_alsa: disagrees about version of symbol snd_pcm_period_elapsed
>>> saa7134_alsa: Unknown symbol snd_pcm_period_elapsed
>>> saa7134_alsa: disagrees about version of symbol 
>>> snd_pcm_hw_constraint_step
>>> saa7134_alsa: Unknown symbol snd_pcm_hw_constraint_step
>>>
>>> This is my alsa version:
>>> cat /proc/asound/version
>>> advanced Linux Sound Architecture Driver Version 1.0.15 (Tue Oct 16 
>>> 14:57:44 2007 UTC)
>>>
>>> This is my kernel version:
>>> uname -a
>>> Linux sioux-desktop 2.6.22-14-rt #1 SMP PREEMPT RT Tue Feb 12 
>>> 09:57:10 UTC 2008 i686 GNU/Linux
>>>
>>> This is my saa7134 version and card:
>>>
>>> saa7130/34: v4l2 driver version 0.2.14 loaded
>>> saa7133[0]: found at 0000:02:09.0, rev: 209, irq: 19, latency: 32, 
>>> mmio: 0xed000000
>>> saa7133[0]: subsystem: 1822:0022, board: Twinhan Hybrid DTV-DVB 3056 
>>> PCI [card=131,autodetected]
>>> saa7133[0]: board init: gpio is 40000
>>> tuner' 0-0042: chip found @ 0x84 (saa7133[0])
>>>
>>>
>>> Make rmmod do not solve the problem!
>>>
>> <snip> _______________________________________________________________
>>
>> A "make rmmod" does *not* always work: If a device is in use, the 
>> kernel will
>> refuse to remove the module. You should find an appropriate error 
>> message.
>> You can have i.e. this situation:
>> If you load the modules a boot time and you run kde, the mixer desktop 
>> applet
>> will open the mixer of the saa7134-alsa device.
>> So you will not be able to unload and thus update the driver before 
>> you closed
>> the kmix applet.
>> There are many other possibilities.
>>
>> Hartmut
>>
> sudo killall mixer_applet2
> sudo rmmod saa7134 saa7134_alsa saa7134_dvb
> 
> and than sudo make rmmod
> 
> does not solve the problem!
> 
> sioux
> 
> 
> 
Does anybody else have an idea what the reason might be?
The handling of kernel symbol versions is tricky, i have no idea
what sioux might have done wrong.
But the patch in question does not even touch the sound code...

Hartmut



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