tag	line	file	source code
perc_mode	871	drivers/sound/opl3.c	devc->fm_info.perc_mode = 0;
perc_mode	1202	drivers/sound/opl3.c	devc->fm_info.perc_mode = 0;
perc_mode	504	include/linux/soundcard.h	int  perc_mode;  /* No longer supported */