b1_rd_reg 347 drivers/staging/isdn/avm/avmcard.h return (b1_rd_reg(base, B1_STAT0(cardtype)) & 0x01) != 0; b1_rd_reg 139 drivers/staging/isdn/avm/b1.c if ((b1_rd_reg(base, B1_STAT1(cardtype)) & 0x0f) != 0x01)