gpio: Move lock_key into struct gpio_irq_chip

In order to consolidate the multiple ways to associate an IRQ chip with
a GPIO chip, move more fields into the new struct gpio_irq_chip.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Acked-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

2 files changed, 9 insertions, 4 deletions

diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index 0bf844470693..685a05caf1ba 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -1646,7 +1646,7 @@ static int gpiochip_irq_map(struct irq_domain *d, unsigned int irq,
          * This lock class tells lockdep that GPIO irqs are in a different
          * category than their parents, so it won't report false recursion.
          */
-        irq_set_lockdep_class(irq, chip->lock_key);
+        irq_set_lockdep_class(irq, chip->irq.lock_key);
         irq_set_chip_and_handler(irq, chip->irq.chip, chip->irq.handler);
         /* Chips that use nested thread handlers have them marked */
         if (chip->irq.nested)
@@ -1830,7 +1830,7 @@ int gpiochip_irqchip_add_key(struct gpio_chip *gpiochip,
         gpiochip->irq.handler = handler;
         gpiochip->irq.default_type = type;
         gpiochip->to_irq = gpiochip_to_irq;
-        gpiochip->lock_key = lock_key;
+        gpiochip->irq.lock_key = lock_key;
         gpiochip->irq.domain = irq_domain_add_simple(of_node,
                                         gpiochip->ngpio, first_irq,
                                         &gpiochip_domain_ops, gpiochip);
diff --git a/include/linux/gpio/driver.h b/include/linux/gpio/driver.h
index 067efcd4f46d..c363ee198ff9 100644
--- a/include/linux/gpio/driver.h
+++ b/include/linux/gpio/driver.h
@@ -63,6 +63,13 @@ struct gpio_irq_chip {
         unsigned int default_type;
 
         /**
+         * @lock_key:
+         *
+         * Per GPIO IRQ chip lockdep class.
+         */
+        struct lock_class_key *lock_key;
+
+        /**
          * @parent_handler:
          *
          * The interrupt handler for the GPIO chip's parent interrupts, may be
@@ -185,7 +192,6 @@ static inline struct gpio_irq_chip *to_gpio_irq_chip(struct irq_chip *chip)
  *      safely.
  * @bgpio_dir: shadowed direction register for generic GPIO to clear/set
  *      direction safely.
- * @lock_key: per GPIO IRQ chip lockdep class
  *
  * A gpio_chip can help platforms abstract various sources of GPIOs so
  * they can all be accessed through a common programing interface.
@@ -255,7 +261,6 @@ struct gpio_chip {
          * With CONFIG_GPIOLIB_IRQCHIP we get an irqchip inside the gpiolib
          * to handle IRQs for most practical cases.
          */
-        struct lock_class_key   *lock_key;
 
         /**
          * @irq: