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path: root/drivers/gpio/gpio-omap.c
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Diffstat (limited to 'drivers/gpio/gpio-omap.c')
-rw-r--r--drivers/gpio/gpio-omap.c20
1 files changed, 10 insertions, 10 deletions
diff --git a/drivers/gpio/gpio-omap.c b/drivers/gpio/gpio-omap.c
index 89675f86230..f319c9ffd4a 100644
--- a/drivers/gpio/gpio-omap.c
+++ b/drivers/gpio/gpio-omap.c
@@ -514,6 +514,14 @@ static int gpio_irq_type(struct irq_data *d, unsigned type)
return -EINVAL;
}
+ retval = gpio_lock_as_irq(&bank->chip, offset);
+ if (retval) {
+ dev_err(bank->dev, "unable to lock offset %d for IRQ\n",
+ offset);
+ spin_unlock_irqrestore(&bank->lock, flags);
+ return retval;
+ }
+
bank->irq_usage |= 1 << GPIO_INDEX(bank, gpio);
spin_unlock_irqrestore(&bank->lock, flags);
@@ -797,6 +805,7 @@ static void gpio_irq_shutdown(struct irq_data *d)
unsigned offset = GPIO_INDEX(bank, gpio);
spin_lock_irqsave(&bank->lock, flags);
+ gpio_unlock_as_irq(&bank->chip, offset);
bank->irq_usage &= ~(1 << offset);
_disable_gpio_module(bank, offset);
_reset_gpio(bank, gpio);
@@ -957,22 +966,13 @@ static int gpio_output(struct gpio_chip *chip, unsigned offset, int value)
{
struct gpio_bank *bank;
unsigned long flags;
- int retval = 0;
bank = container_of(chip, struct gpio_bank, chip);
spin_lock_irqsave(&bank->lock, flags);
-
- if (LINE_USED(bank->irq_usage, offset)) {
- retval = -EINVAL;
- goto exit;
- }
-
bank->set_dataout(bank, offset, value);
_set_gpio_direction(bank, offset, 0);
-
-exit:
spin_unlock_irqrestore(&bank->lock, flags);
- return retval;
+ return 0;
}
static int gpio_debounce(struct gpio_chip *chip, unsigned offset,