UART_IER           18 arch/powerpc/kernel/udbg_16550.c #define UART_IER	1
UART_IER           59 arch/sh/include/asm/smc37c93x.h #define UART_IER	0x2	/* Interrupt Enable Register */
UART_IER           24 include/uapi/linux/serial_reg.h #define UART_IER	1	/* Out: Interrupt Enable Register */