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genirq/irqdomain: Rename irq_domain::dev to irq_domain:: Pm_dev

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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>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Acked-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20221124230313.574541683@linutronix.de
This commit is contained in:
Thomas Gleixner 2022-11-25 00:24:12 +01:00
parent f876ea3b79
commit 6a9fc4190c
3 changed files with 9 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/irqchip/irq-gic.c
View File

@ -401,8 +401,8 @@ static void gic_irq_print_chip(struct irq_data *d, struct seq_file *p)
{
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]));
}

6
include/linux/irqdomain.h
View File

@ -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_device(struct irq_domain *d,
struct device *dev)
{
if (d)
d->dev = dev;
d->pm_dev = dev;
}
#ifdef CONFIG_IRQ_DOMAIN

8
kernel/irq/chip.c
View File

@ -1561,10 +1561,10 @@ int irq_chip_compose_msi_msg(struct irq_data *data, struct msi_msg *msg)
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_device(struct irq_data *data)
*/
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 *data)
*/
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)