gpio: 104-idi-48: Fix missing spin_lock_init for ack_lock

AxelLin · richardweinberger · commit 0b305ccc1b54 · 2016-06-23T00:29:29.000+02:00
Fixes: 9ae4821 ("gpio: 104-idi-48: Clear pending interrupt once in IRQ handler") Signed-off-by: Axel Lin <axel.lin@ingics.com> Acked-by: William Breathitt Gray <vilhelm.gray@gmail.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
diff --git a/drivers/gpio/gpio-104-idi-48.c b/drivers/gpio/gpio-104-idi-48.c
@@ -247,6 +247,7 @@ static int idi_48_probe(struct device *dev, unsigned int id)
 	idi48gpio->irq = irq[id];
 
 	spin_lock_init(&idi48gpio->lock);
+	spin_lock_init(&idi48gpio->ack_lock);
 
 	dev_set_drvdata(dev, idi48gpio);
 
