I tried to patch the 2.4.20 kernel with the 2.4.21 pre7..it wouldnt compile...then I came across the fix
right here What I did was copy the info from the web page into a text file. Called it ac97fix. Then I went into the 2.4.21-pre7 directory (is patched and broken), ran
patch -p1 --dry-run < ac97fix
I got this error
patching file include/linux/ac97_codec.h
patch: **** malformed patch at line 8: int dev_mixer;
hope someone can help, thanks