Merge tag 'gpio-v4.11-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio

Pull late GPIO fixes from Linus Walleij:
 "Some late coming ACPI fixes for GPIO.

  We're dealing with ACPI issues here. The first is related to wake IRQs
  on Bay Trail/Cherry Trail CPUs which are common in laptops. The second
  is about proper probe deferral when reading _CRS properties.

  For my untrained eye it seems there was some quarrel between the BIOS
  and the kernel about who is supposed to deal with wakeups from GPIO
  lines"

* tag 'gpio-v4.11-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio:
  ACPI / gpio: do not fall back to parsing _CRS when we get a deferral
  gpio: acpi: Call enable_irq_wake for _IAE GpioInts with Wake set

1 files changed, 9 insertions, 1 deletions

diff --git a/drivers/gpio/gpiolib-acpi.c b/drivers/gpio/gpiolib-acpi.c
index 9b37a3692b3f..2bd683e2be02 100644
--- a/drivers/gpio/gpiolib-acpi.c
+++ b/drivers/gpio/gpiolib-acpi.c
@@ -266,6 +266,9 @@ static acpi_status acpi_gpiochip_request_interrupt(struct acpi_resource *ares,
                 goto fail_free_event;
         }
 
+        if (agpio->wake_capable == ACPI_WAKE_CAPABLE)
+                enable_irq_wake(irq);
+
         list_add_tail(&event->node, &acpi_gpio->events);
         return AE_OK;
 
@@ -339,6 +342,9 @@ void acpi_gpiochip_free_interrupts(struct gpio_chip *chip)
         list_for_each_entry_safe_reverse(event, ep, &acpi_gpio->events, node) {
                 struct gpio_desc *desc;
 
+                if (irqd_is_wakeup_set(irq_get_irq_data(event->irq)))
+                        disable_irq_wake(event->irq);
+
                 free_irq(event->irq, event);
                 desc = event->desc;
                 if (WARN_ON(IS_ERR(desc)))
@@ -571,8 +577,10 @@ struct gpio_desc *acpi_find_gpio(struct device *dev,
                 }
 
                 desc = acpi_get_gpiod_by_index(adev, propname, idx, &info);
-                if (!IS_ERR(desc) || (PTR_ERR(desc) == -EPROBE_DEFER))
+                if (!IS_ERR(desc))
                         break;
+                if (PTR_ERR(desc) == -EPROBE_DEFER)
+                        return ERR_CAST(desc);
         }
 
         /* Then from plain _CRS GPIOs */