[irqchip: irq/irqchip-next] genirq: Kill irq_chip::parent_device

[irqchip-bot for Marc Zyngier]

The following commit has been merged into the irq/irqchip-next branch of irqchip:

Commit-ID:     beb0622138cd2848dec06b0651a988c39d099574
Gitweb:        https://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms/beb0622138cd2848dec06b0651a988c39d099574
Author:        Marc Zyngier <maz@xxxxxxxxxx>
AuthorDate:    Tue, 01 Feb 2022 12:03:10 
Committer:     Marc Zyngier <maz@xxxxxxxxxx>
CommitterDate: Thu, 10 Feb 2022 11:07:04 

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@xxxxxxxxxx>
Acked-by: Bartosz Golaszewski <brgl@xxxxxxxx>
Link: https://lore.kernel.org/r/20220201120310.878267-13-maz@xxxxxxxxxx
---
 include/linux/irq.h | 2 --
 kernel/irq/chip.c   | 3 ---
 2 files changed, 5 deletions(-)

diff --git a/include/linux/irq.h b/include/linux/irq.h
index 848e1e1..2cb2e2a 100644
--- 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
--- 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;