MCR_LOOPBACK       76 arch/mips/include/asm/netlogic/xlp-hal/uart.h #define MCR_LOOPBACK		0x10
MCR_LOOPBACK      126 drivers/usb/serial/io_16654.h #define MCR_LOOPBACK		0x10	// Set internal (digital) loopback mode
MCR_LOOPBACK       55 drivers/usb/serial/mos7840.c #define MCR_LOOPBACK           0x10	/* Set internal (digital) loopback mode */