gpio: gpio-mxc: gpio_set_wake_irq() use proper return values

Errors from enable_irq_wake() in gpio_set_wake_irq() were silently ignored.
Thus led to the problem that gpio_set_wake_irq() always returned
successfully, even if enable_irq_wake() returned an error.

Signed-off-by: Philipp Rosenberger <p.rosenberger@linutronix.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

1 files changed, 6 insertions, 5 deletions

diff --git a/drivers/gpio/gpio-mxc.c b/drivers/gpio/gpio-mxc.c
index 92692251ade1..3dcd990f416e 100644
--- a/drivers/gpio/gpio-mxc.c
+++ b/drivers/gpio/gpio-mxc.c
@@ -324,20 +324,21 @@ static int gpio_set_wake_irq(struct irq_data *d, u32 enable)
         struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
         struct mxc_gpio_port *port = gc->private;
         u32 gpio_idx = d->hwirq;
+        int ret;
 
         if (enable) {
                 if (port->irq_high && (gpio_idx >= 16))
-                        enable_irq_wake(port->irq_high);
+                        ret = enable_irq_wake(port->irq_high);
                 else
-                        enable_irq_wake(port->irq);
+                        ret = enable_irq_wake(port->irq);
         } else {
                 if (port->irq_high && (gpio_idx >= 16))
-                        disable_irq_wake(port->irq_high);
+                        ret = disable_irq_wake(port->irq_high);
                 else
-                        disable_irq_wake(port->irq);
+                        ret = disable_irq_wake(port->irq);
         }
 
-        return 0;
+        return ret;
 }
 
 static int mxc_gpio_init_gc(struct mxc_gpio_port *port, int irq_base)