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Late GPIO fix:

Browse source 
- Fix a runtime PM suspend/resume bug in the RCAR driver
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Merge tag 'gpio-v4.5-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio

Pull late GPIO fix from Linus Walleij:
 "Regressions never arrive when you want them to, so here is a late fix
  for the Renesas RCAR GPIO driver.  It only affects that driver on the
  very specific Renesas platforms:

   - Fix a runtime PM suspend/resume bug in the RCAR driver"

* tag 'gpio-v4.5-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio:
  gpio: rcar: Add Runtime PM handling for interrupts
This commit is contained in:
Linus Torvalds 2016-03-03 11:39:11 -08:00
commit 4237b2e6c6
1 changed files with 42 additions and 0 deletions
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42
drivers/gpio/gpio-rcar.c
View file

@ -196,6 +196,44 @@ static int gpio_rcar_irq_set_wake(struct irq_data *d, unsigned int on)
return 0;
}
static void gpio_rcar_irq_bus_lock(struct irq_data *d)
{
struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
struct gpio_rcar_priv *p = gpiochip_get_data(gc);
pm_runtime_get_sync(&p->pdev->dev);
}
static void gpio_rcar_irq_bus_sync_unlock(struct irq_data *d)
{
struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
struct gpio_rcar_priv *p = gpiochip_get_data(gc);
pm_runtime_put(&p->pdev->dev);
}
static int gpio_rcar_irq_request_resources(struct irq_data *d)
{
struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
struct gpio_rcar_priv *p = gpiochip_get_data(gc);
int error;
error = pm_runtime_get_sync(&p->pdev->dev);
if (error < 0)
return error;
return 0;
}
static void gpio_rcar_irq_release_resources(struct irq_data *d)
{
struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
struct gpio_rcar_priv *p = gpiochip_get_data(gc);
pm_runtime_put(&p->pdev->dev);
}
static irqreturn_t gpio_rcar_irq_handler(int irq, void *dev_id)
{
struct gpio_rcar_priv *p = dev_id;
@ -450,6 +488,10 @@ static int gpio_rcar_probe(struct platform_device *pdev)
irq_chip->irq_unmask = gpio_rcar_irq_enable;
irq_chip->irq_set_type = gpio_rcar_irq_set_type;
irq_chip->irq_set_wake = gpio_rcar_irq_set_wake;
irq_chip->irq_bus_lock = gpio_rcar_irq_bus_lock;
irq_chip->irq_bus_sync_unlock = gpio_rcar_irq_bus_sync_unlock;
irq_chip->irq_request_resources = gpio_rcar_irq_request_resources;
irq_chip->irq_release_resources = gpio_rcar_irq_release_resources;
irq_chip->flags = IRQCHIP_SET_TYPE_MASKED | IRQCHIP_MASK_ON_SUSPEND;
ret = gpiochip_add_data(gpio_chip, p);