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How to get alsa 0.9.3 working with 2.4 kernels on Alpha

I got Alsa 0.9.3a finally working with kernel 2.2.24 with only " #include 
<asm/pgtable.h> " in highmem.h 

What other hacks are needed with kernel 2.4.20 to get it working on a ALPHA.
My guesses are
1. The hack above
2. Something with this lines in adriver.h :
      #define need_resched() (current->need_resched)
   Because of this error : /lib/modules/2.4.20/build/include/linux/sched.h:946: 
arguments given to macro `need_resched'
   Commenting out or changing the KERNEL_VERSION to (2, 4, 3) works
3. Something to solve this error:
     memory_wrapper.c: In function `snd_compat_vmalloc_to_page':
     memory_wrapper.c:41: `mem_map' undeclared (first use in this function)
     memory_wrapper.c:41: (Each undeclared identifier is reported only once
     memory_wrapper.c:41: for each function it appears in.)
     memory_wrapper.c:28: warning: `page' might be used uninitialized in this 
     make[1]: *** [memory_wrapper.o] Error 1
     make: *** [compile] Error 1
   Probably can't he find the declaration of mem_map, but I can't find it 

Are the fist two hacks right or is there a better way and how to solve the 

I'm using a 164SX ALPHA with Debian Woody

Wouter Rademaker 

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