[alsa-devel] 'unresolved symbol lock_kernel' on 2.4 kernel

[Takashi Iwai]

At Mon, 21 Nov 2011 15:54:50 +0000,
Alan Horstmann wrote:
> 
> Hi,
> 
> As part of recent testing I attempted to build current 1.0.24 alsa-driver on 
> an older machine with 2.4.21-99 kernel .
> 
> 'configure' and 'make' proceeded uneventfully, but 'rcalsasound start' gave 
> following error:-
> 
> "Starting sound driver: snd-ice1712 /lib/modules/2.4.21-99-athlon/kernel/
> sound/acore/snd.o: unresolved symbol lock_kernel
> /lib/modules/2.4.21-99-athlon/kernel/sound/acore/snd.o: unresolved symbol 
> unlock_kernel
> /lib/modules/2.4.21-99-athlon/kernel/sound/acore/snd.o: insmod /lib/
> modules/2.4.21-99-athlon/kernel/sound/acore/snd.o failed
> /lib/modules/2.4.21-99-athlon/kernel/sound/acore/snd.o: insmod snd-ice1712 
> failed"
> 
> This does not occur on 1.0.23 (or previous builds that I have tested).
> 
> I am aware that there was discussion about ditching 2.2/2.4 support, but my 
> understanding was that 1.0.24 should build and work, but may be the last to 
> do so - is that correct?

Well, I don't think any developers actually tested 2.2/2.4 with the
real machine.  We usually test the builds, but no more than that.
So it's not unsurprising if 1.0.24 doesn't work with 2.4 kernel.

> Is there a simple fix for this problem?

Stick with 1.0.23 :)  There are no big changes regarding ice1712
driver since 1.0.23.  The only change is the support of delta66e.

Or, just adding #include <linux/smp_lock.h> in include/adriver.h
might fix the problem.


Takashi