MSR_DSR           128 arch/arm/mach-pxa/include/mach/regs-uart.h #define MSR_DSR		(1 << 5)	/* Data Set Ready */
MSR_DSR           155 arch/sh/include/asm/smc37c93x.h #define MSR_DSR		0x2000	/* Data Set Ready */
MSR_DSR           193 drivers/net/hamradio/yam.c #define MSR_DSR		0x20			/* DSR input */