tag	line	file	source code
LP_BUSY	100	kernel/chr_drv/lp.c	if (LP_F(minor) & LP_BUSY)
LP_BUSY	102	kernel/chr_drv/lp.c	LP_F(minor) |= LP_BUSY;
LP_BUSY	110	kernel/chr_drv/lp.c	LP_F(minor) &= ~LP_BUSY;