[alsa-devel] NULL pointer dereference in ALSA triggered through saa7134-alsa

Ozan Çağlayan ozan at pardus.org.tr
Mon Aug 10 17:42:20 CEST 2009

Takashi Iwai wrote:
> At Mon, 10 Aug 2009 16:50:55 +0300,
> Ozan Çağlayan wrote:
>> Hi,
>> I've finally succesfully compiled and linked saa7134-alsa driver using
>> an external alsa-driver and its Module.symvers file. Everything seems
>> okay, no undefined symbol or something else:
>> - An installed kernel which only builds and brings soundcore
>> and sound_firmware,
>> - Latest alsa-driver built externally and installed,
>> - Latest saa7134-alsa, cx88-alsa, etc. code from linus-2.6 (seen that
>> they don't affected by some API/ABI changes) patched on top of the
>> alsa-driver tarball,
> The external drivers using ALSA API have to be built with the
> newer ALSA header files from alsa-driver tree.  It's not enough to
> change snd_card_new() with snd_card_create().  The core structure
> was changed, so the whole build has to be adjusted, too.
Actually that was the 0th step that I forgot to mention. I'm installing
the headers from the alsa-driver snapshot into /usr/include/sound and
then I build alsa-driver. Then I use the symvers from the alsa-driver
build alltogether with the headers that I've already installed into
/usr/include/sound to build the V4L ones.

Sorry If I understand what you said wrongly.


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