Hi<br>  I want to write a sound driver for arm. So I read the code in sound/arm/. There is  only a file -- sa11xx-uda1341.c. When I read the code , I find it using the struct l3_client, but I can't find its definition, and not find file l3.h(include/linux/l3/) in kernel. Why ???<br><br>Sudong<br>2004-12-3<br>