[PATCH] serial/uartlite: Only enable port if request_port succeeded

The uartlite driver used to always enable the port even if request_port
failed causing havoc. This patch fixes it.

Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/serial/uartlite.c b/drivers/serial/uartlite.c
index 92eba893559d..db8607e3d531 100644
--- a/drivers/serial/uartlite.c
+++ b/drivers/serial/uartlite.c
@@ -278,8 +278,8 @@ static int ulite_request_port(struct uart_port *port)
 
 static void ulite_config_port(struct uart_port *port, int flags)
 {
-        ulite_request_port(port);
-        port->type = PORT_UARTLITE;
+        if (!ulite_request_port(port))
+                port->type = PORT_UARTLITE;
 }
 
 static int ulite_verify_port(struct uart_port *port, struct serial_struct *ser)