TXSTATUS_UNDERRUN  363 drivers/net/ethernet/nxp/lpc_eth.c #define TXSTATUS_UNDERRUN		(1 << 29)
TXSTATUS_UNDERRUN  551 drivers/tty/synclink.c #define TXSTATUS_UNDERRUN		BIT1
TXSTATUS_UNDERRUN  631 drivers/tty/synclink.c #define TXSTATUS_UNDERRUN	BIT1