genirq: Kill irq_chip::parent_device

Now that noone is using irq_chip::parent_device in the tree, get
rid of it.

Signed-off-by: Marc Zyngier <maz@kernel.org>
Acked-by: Bartosz Golaszewski <brgl@bgdev.pl>
Link: https://lore.kernel.org/r/20220201120310.878267-13-maz@kernel.org

diff --git a/include/linux/irq.h b/include/linux/irq.h
index 848e1e1..2cb2e2a 100644 (file)
--- a/include/linux/irq.h
+++ b/include/linux/irq.h
@@ -456,7 +456,6 @@ static inline irq_hw_number_t irqd_to_hwirq(struct irq_data *d)
 /**
  * struct irq_chip - hardware interrupt chip descriptor
  *
- * @parent_device:     pointer to parent device for irqchip
  * @name:              name for /proc/interrupts
  * @irq_startup:       start up the interrupt (defaults to ->enable if NULL)
  * @irq_shutdown:      shut down the interrupt (defaults to ->disable if NULL)
@@ -503,7 +502,6 @@ static inline irq_hw_number_t irqd_to_hwirq(struct irq_data *d)
  * @flags:             chip specific flags
  */
 struct irq_chip {
-       struct device   *parent_device;
        const char      *name;
        unsigned int    (*irq_startup)(struct irq_data *data);
        void            (*irq_shutdown)(struct irq_data *data);

diff --git a/kernel/irq/chip.c b/kernel/irq/chip.c
index a2a12cd..24b6f2b 100644 (file)
--- a/kernel/irq/chip.c
+++ b/kernel/irq/chip.c
@@ -1560,9 +1560,6 @@ int irq_chip_compose_msi_msg(struct irq_data *data, struct msi_msg *msg)
 
 static struct device *irq_get_parent_device(struct irq_data *data)
 {
-       if (data->chip->parent_device)
-               return data->chip->parent_device;
-
        if (data->domain)
                return data->domain->dev;