[PATCH] ioremap balanced with iounmap for drivers/serial/mux.c

ioremap must be balanced by an iounmap and failing to do so can result
in a memory leak.

Signed-off-by: Amol Lad <amol@verismonetworks.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/drivers/serial/mux.c b/drivers/serial/mux.c
index 4a1c998..aa819d3 100644 (file)
--- a/drivers/serial/mux.c
+++ b/drivers/serial/mux.c
@@ -521,6 +521,8 @@ static void __exit mux_exit(void)
 
        for (i = 0; i < port_cnt; i++) {
                uart_remove_one_port(&mux_driver, &mux_ports[i]);
+               if (mux_ports[i].membase)
+                       iounmap(mux_ports[i].membase);
        }
 
        uart_unregister_driver(&mux_driver);