diff mbox series

[V2,03/21] genirq/irqdomain: Rename irq_domain::dev to irq_domain::pm_dev

Message ID 20221121083325.684903415@linutronix.de
State New
Headers
Series genirq, PCI/MSI: Support for per device MSI and PCI/IMS - Part 2 API rework |

Commit Message

Thomas Gleixner Nov. 21, 2022, 2:36 p.m. UTC 
  irq_domain::dev is a misnomer as it's usually the rule that a device
pointer points to something which is directly related to the instance.

irq_domain::dev can point to some other device for power management to
ensure that this underlying device is not powered down when an interrupt is
allocated.

The upcoming per device MSI domains really require a pointer to the device
which instantiated the irq domain and not to some random other device which
is required for power management down the chain.

Rename irq_domain::dev to irq_domain::pm_dev and fixup the few sites which
use that pointer.

Conversion was done with the help of coccinelle.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
---
 drivers/irqchip/irq-gic.c |    4 ++--
 include/linux/irqdomain.h |    6 +++---
 kernel/irq/chip.c         |    8 ++++----
 3 files changed, 9 insertions(+), 9 deletions(-)

Comments

Marc Zyngier Nov. 24, 2022, 1:46 p.m. UTC | #1 
On Mon, 21 Nov 2022 14:36:22 +0000,
Thomas Gleixner <tglx@linutronix.de> wrote:
> 
> irq_domain::dev is a misnomer as it's usually the rule that a device
> pointer points to something which is directly related to the instance.
> 
> irq_domain::dev can point to some other device for power management to
> ensure that this underlying device is not powered down when an interrupt is
> allocated.
> 
> The upcoming per device MSI domains really require a pointer to the device
> which instantiated the irq domain and not to some random other device which
> is required for power management down the chain.
> 
> Rename irq_domain::dev to irq_domain::pm_dev and fixup the few sites which
> use that pointer.
> 
> Conversion was done with the help of coccinelle.
> 
> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
> ---
>  drivers/irqchip/irq-gic.c |    4 ++--
>  include/linux/irqdomain.h |    6 +++---
>  kernel/irq/chip.c         |    8 ++++----
>  3 files changed, 9 insertions(+), 9 deletions(-)

Reviewed-by: Marc Zyngier <maz@kernel.org>

	M.
diff mbox series

Patch

--- a/drivers/irqchip/irq-gic.c
+++ b/drivers/irqchip/irq-gic.c
@@ -401,8 +401,8 @@  static void gic_irq_print_chip(struct ir
 {
 	struct gic_chip_data *gic = irq_data_get_irq_chip_data(d);
 
-	if (gic->domain->dev)
-		seq_printf(p, gic->domain->dev->of_node->name);
+	if (gic->domain->pm_dev)
+		seq_printf(p, gic->domain->pm_dev->of_node->name);
 	else
 		seq_printf(p, "GIC-%d", (int)(gic - &gic_data[0]));
 }
--- a/include/linux/irqdomain.h
+++ b/include/linux/irqdomain.h
@@ -131,7 +131,7 @@  struct irq_domain_chip_generic;
  * @gc:		Pointer to a list of generic chips. There is a helper function for
  *		setting up one or more generic chips for interrupt controllers
  *		drivers using the generic chip library which uses this pointer.
- * @dev:	Pointer to a device that can be utilized for power management
+ * @pm_dev:	Pointer to a device that can be utilized for power management
  *		purposes related to the irq domain.
  * @parent:	Pointer to parent irq_domain to support hierarchy irq_domains
  *
@@ -153,7 +153,7 @@  struct irq_domain {
 	struct fwnode_handle		*fwnode;
 	enum irq_domain_bus_token	bus_token;
 	struct irq_domain_chip_generic	*gc;
-	struct device			*dev;
+	struct device			*pm_dev;
 #ifdef	CONFIG_IRQ_DOMAIN_HIERARCHY
 	struct irq_domain		*parent;
 #endif
@@ -206,7 +206,7 @@  static inline void irq_domain_set_pm_dev
 					    struct device *dev)
 {
 	if (d)
-		d->dev = dev;
+		d->pm_dev = dev;
 }
 
 #ifdef CONFIG_IRQ_DOMAIN
--- a/kernel/irq/chip.c
+++ b/kernel/irq/chip.c
@@ -1561,10 +1561,10 @@  int irq_chip_compose_msi_msg(struct irq_
 	return 0;
 }
 
-static struct device *irq_get_parent_device(struct irq_data *data)
+static struct device *irq_get_pm_device(struct irq_data *data)
 {
 	if (data->domain)
-		return data->domain->dev;
+		return data->domain->pm_dev;
 
 	return NULL;
 }
@@ -1578,7 +1578,7 @@  static struct device *irq_get_parent_dev
  */
 int irq_chip_pm_get(struct irq_data *data)
 {
-	struct device *dev = irq_get_parent_device(data);
+	struct device *dev = irq_get_pm_device(data);
 	int retval = 0;
 
 	if (IS_ENABLED(CONFIG_PM) && dev)
@@ -1597,7 +1597,7 @@  int irq_chip_pm_get(struct irq_data *dat
  */
 int irq_chip_pm_put(struct irq_data *data)
 {
-	struct device *dev = irq_get_parent_device(data);
+	struct device *dev = irq_get_pm_device(data);
 	int retval = 0;
 
 	if (IS_ENABLED(CONFIG_PM) && dev)