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authorAndy Shevchenko <andriy.shevchenko@linux.intel.com>2014-07-14 14:26:14 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2014-07-17 18:16:23 -0700
commitb1261c86fe238cc0da3f5dc837a38a0c39f3e7c4 (patch)
tree4a62c30754e5aca7cf5c665efeabf545b69d52da /include/linux/serial_8250.h
parent380c966c093e7239e42a81f165b20b2bad2658bc (diff)
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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 <andriy.shevchenko@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux/serial_8250.h')
-rw-r--r--include/linux/serial_8250.h5
1 files changed, 5 insertions, 0 deletions
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);