diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c
index 8379e3fa01625d14ae69f63053d0da26d53b3276..a373eff44ae8aece13552e20a5f16092ef4ec71b 100644
--- a/drivers/tty/serial/serial_core.c
+++ b/drivers/tty/serial/serial_core.c
@@ -2682,6 +2682,7 @@ int uart_add_one_port(struct uart_driver *drv, struct uart_port *uport)
 
 	state->pm_state = UART_PM_STATE_UNDEFINED;
 	uport->cons = drv->cons;
+	uport->minor = drv->tty_driver->minor_start + uport->line;
 
 	/*
 	 * If this port is a console, then the spinlock is already
diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h
index b0148e7bcbfa0ad8bc5686f2ea8d60b5c663f99a..980170e5a982adc7ffd9929d69c82049f87827c0 100644
--- a/include/linux/serial_core.h
+++ b/include/linux/serial_core.h
@@ -235,6 +235,7 @@ struct uart_port {
 	const struct uart_ops	*ops;
 	unsigned int		custom_divisor;
 	unsigned int		line;			/* port index */
+	unsigned int		minor;
 	resource_size_t		mapbase;		/* for ioremap */
 	struct device		*dev;			/* parent device */
 	unsigned char		hub6;			/* this should be in the 8250 driver */