From b1261c86fe238cc0da3f5dc837a38a0c39f3e7c4 Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Mon, 14 Jul 2014 14:26:14 +0300 Subject: serial: 8250: introduce up_to_u8250p() helper It helps to cast struct uart_port to struct uart_8250_port at runtime. Signed-off-by: Andy Shevchenko Signed-off-by: Greg Kroah-Hartman --- include/linux/serial_8250.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include/linux/serial_8250.h') diff --git a/include/linux/serial_8250.h b/include/linux/serial_8250.h index af47a8af6024..730ab4b3d686 100644 --- a/include/linux/serial_8250.h +++ b/include/linux/serial_8250.h @@ -100,6 +100,11 @@ struct uart_8250_port { void (*dl_write)(struct uart_8250_port *, int); }; +static inline struct uart_8250_port *up_to_u8250p(struct uart_port *up) +{ + return container_of(up, struct uart_8250_port, port); +} + int serial8250_register_8250_port(struct uart_8250_port *); void serial8250_unregister_port(int line); void serial8250_suspend_port(int line); -- cgit v1.2.1