set_bit(reg, ac97->reg_accessed); 
int snd_ac97_update_bits_nolock(ac97_t *ac97, unsigned short reg,				unsigned short mask, unsigned short value){	int change;	unsigned short old, new;	old = snd_ac97_read_cache(ac97, reg);	new = (old & ~mask) | value;	change = old != new;	if (change) {		ac97->regs[reg] = new;		ac97->bus->ops->write(ac97, reg, new);	}	return change;}
10457	/local/tlutelli/issta_data/temp/c/2005_temp/2005/10457/52b723888c1a55d34551f9b0b9d9296e0e3e8d3c/ac97_codec.c/buggy/sound/pci/ac97/ac97_codec.c