int read_background(int start, int reading) 
static int read_background(int start, int reading) 
int read_background(int start, int reading){	if (cd->background)		return -1;	/* can't do twice */	outw(dc_normal | BACK_AHEAD, r_data_control);	if (!reading && start_read(start))		return -2;	cd->adapter_first = cd->adapter_last = start;	cd->background = 1;	/* flag a read is going on */	return 0;}
10457	/local/tlutelli/issta_data/temp/c/2005_temp/2005/10457/8b3d4a2a3ef9488d4477e8823106abfd6039eb66/cm206.c/clean/drivers/cdrom/cm206.c