gpio: dwapb: Don't shadow error code of gpiochip_lock_as_irq()

gpiochip_lock_as_irq() may return a few error codes,
do not shadow them by -EINVAL and let caller to decide.

No functional change intended.

Cc: Hoan Tran <hotran@apm.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

1 files changed, 4 insertions, 2 deletions

diff --git a/drivers/gpio/gpio-dwapb.c b/drivers/gpio/gpio-dwapb.c
index 7a2de3de6571..28da700f5f52 100644
--- a/drivers/gpio/gpio-dwapb.c
+++ b/drivers/gpio/gpio-dwapb.c
@@ -255,11 +255,13 @@ static int dwapb_irq_reqres(struct irq_data *d)
         struct irq_chip_generic *igc = irq_data_get_irq_chip_data(d);
         struct dwapb_gpio *gpio = igc->private;
         struct gpio_chip *gc = &gpio->ports[0].gc;
+        int ret;
 
-        if (gpiochip_lock_as_irq(gc, irqd_to_hwirq(d))) {
+        ret = gpiochip_lock_as_irq(gc, irqd_to_hwirq(d));
+        if (ret) {
                 dev_err(gpio->dev, "unable to lock HW IRQ %lu for IRQ\n",
                         irqd_to_hwirq(d));
-                return -EINVAL;
+                return ret;
         }
         return 0;
 }