serial: max310x: Add missing mutex_destroy() on driver exit

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 5 insertions, 2 deletions

diff --git a/drivers/tty/serial/max310x.c b/drivers/tty/serial/max310x.c
index 2a12cbcbf388..c180576546ed 100644
--- a/drivers/tty/serial/max310x.c
+++ b/drivers/tty/serial/max310x.c
@@ -1134,8 +1134,6 @@ static int max310x_probe(struct device *dev, struct max310x_devtype *devtype,
         s->devtype = devtype;
         dev_set_drvdata(dev, s);
 
-        mutex_init(&s->mutex);
-
         /* Check device to ensure we are talking to what we expect */
         ret = devtype->detect(dev);
         if (ret)
@@ -1193,6 +1191,8 @@ static int max310x_probe(struct device *dev, struct max310x_devtype *devtype,
                 goto out_uart;
 #endif
 
+        mutex_init(&s->mutex);
+
         for (i = 0; i < devtype->nr; i++) {
                 /* Initialize port data */
                 s->p[i].port.line       = i;
@@ -1233,6 +1233,8 @@ static int max310x_probe(struct device *dev, struct max310x_devtype *devtype,
 
         dev_err(dev, "Unable to reguest IRQ %i\n", irq);
 
+        mutex_destroy(&s->mutex);
+
 #ifdef CONFIG_GPIOLIB
         WARN_ON(gpiochip_remove(&s->gpio));
 #endif
@@ -1264,6 +1266,7 @@ static int max310x_remove(struct device *dev)
                 s->devtype->power(&s->p[i].port, 0);
         }
 
+        mutex_destroy(&s->mutex);
         uart_unregister_driver(&s->uart);
         clk_disable_unprepare(s->clk);