We were returning with "chip->lock" held by mistake. It's safe to
move the return to before we take the spinlock.
Fixes: 1dbf7f299f90 ('gpio: pl061: detail IRQ trigger handling')
Signed-off-by: Dan Carpenter <[email protected]>
diff --git a/drivers/gpio/gpio-pl061.c b/drivers/gpio/gpio-pl061.c
index 5b1461f..1793397 100644
--- a/drivers/gpio/gpio-pl061.c
+++ b/drivers/gpio/gpio-pl061.c
@@ -152,12 +152,6 @@ static int pl061_irq_type(struct irq_data *d, unsigned
trigger)
if (offset < 0 || offset >= PL061_GPIO_NR)
return -EINVAL;
- spin_lock_irqsave(&chip->lock, flags);
-
- gpioiev = readb(chip->base + GPIOIEV);
- gpiois = readb(chip->base + GPIOIS);
- gpioibe = readb(chip->base + GPIOIBE);
-
if ((trigger & (IRQ_TYPE_LEVEL_HIGH | IRQ_TYPE_LEVEL_LOW)) &&
(trigger & (IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING)))
{
@@ -168,6 +162,13 @@ static int pl061_irq_type(struct irq_data *d, unsigned
trigger)
return -EINVAL;
}
+
+ spin_lock_irqsave(&chip->lock, flags);
+
+ gpioiev = readb(chip->base + GPIOIEV);
+ gpiois = readb(chip->base + GPIOIS);
+ gpioibe = readb(chip->base + GPIOIBE);
+
if (trigger & (IRQ_TYPE_LEVEL_HIGH | IRQ_TYPE_LEVEL_LOW)) {
bool polarity = trigger & IRQ_TYPE_LEVEL_HIGH;
--
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