From ae14a7954f5124208e6e93cafb3099f83acd43f5 Mon Sep 17 00:00:00 2001 From: Sebastian Andrzej Siewior Date: Fri, 5 Sep 2014 21:02:36 +0200 Subject: tty: serial: 8250_core: provide a function to export uart_8250_port There is no way to access a struct uart_8250_port for a specific line. This is only required outside of the 8250/uart callbacks like for devices' suspend & remove callbacks. For those the 8250-core provides a wrapper like serial8250_unregister_port() which passes the struct to the proper function based on the line argument. For run time suspend I need access to this struct not only to make serial_out() work but also to properly restore up->ier and up->mcr. Acked-by: Alan Cox Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Greg Kroah-Hartman --- drivers/tty/serial/8250/8250.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'drivers/tty/serial/8250/8250.h') diff --git a/drivers/tty/serial/8250/8250.h b/drivers/tty/serial/8250/8250.h index 1b08c918cd51..85bfec58d77c 100644 --- a/drivers/tty/serial/8250/8250.h +++ b/drivers/tty/serial/8250/8250.h @@ -112,6 +112,8 @@ static inline void serial_dl_write(struct uart_8250_port *up, int value) up->dl_write(up, value); } +struct uart_8250_port *serial8250_get_port(int line); + #if defined(__alpha__) && !defined(CONFIG_PCI) /* * Digital did something really horribly wrong with the OUT1 and OUT2 -- cgit v1.2.3