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/Linux-v5.15/drivers/tty/
Dmxser.c380 u8 oldmcr, hwid; in mxser_must_get_hwid() local
385 oldmcr = inb(io + UART_MCR); in mxser_must_get_hwid()
389 outb(oldmcr, io + UART_MCR); in mxser_must_get_hwid()