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| author | Sebastian Andrzej Siewior <bigeasy@linutronix.de> | 2014-09-05 23:02:36 +0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-09-09 03:32:36 +0400 |
| commit | ae14a7954f5124208e6e93cafb3099f83acd43f5 (patch) | |
| tree | 6dcba5a0186a067bf650d10f2dd9f7d96e3e828c /drivers/tty/serial/8250/8250.h | |
| parent | 9d329c1c68d2cc625bb4b8191f37297db6061448 (diff) | |
| download | linux-ae14a7954f5124208e6e93cafb3099f83acd43f5.tar.xz | |
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 <alan@linux.intel.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/serial/8250/8250.h')
| -rw-r--r-- | drivers/tty/serial/8250/8250.h | 2 |
1 files changed, 2 insertions, 0 deletions
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 |