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irqdomain: Add a resource managed version of irq_domain_instantiate()

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Add a devres version of irq_domain_instantiate().

Signed-off-by: Herve Codina <herve.codina@bootlin.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20240614173232.1184015-17-herve.codina@bootlin.com
This commit is contained in:
Herve Codina 2024-06-14 19:32:17 +02:00 committed by Thomas Gleixner
parent e6f67ce32e
commit 0c5b29a6dc
2 changed files with 43 additions and 0 deletions
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2
include/linux/irqdomain.h
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@ -304,6 +304,8 @@ struct irq_domain_info {
};
struct irq_domain *irq_domain_instantiate(const struct irq_domain_info *info);
struct irq_domain *devm_irq_domain_instantiate(struct device *dev,
const struct irq_domain_info *info);
struct irq_domain *__irq_domain_add(struct fwnode_handle *fwnode, unsigned int size,
irq_hw_number_t hwirq_max, int direct_max,

41
kernel/irq/devres.c
View File

@ -1,6 +1,7 @@
// SPDX-License-Identifier: GPL-2.0
#include <linux/module.h>
#include <linux/interrupt.h>
#include <linux/irqdomain.h>
#include <linux/device.h>
#include <linux/gfp.h>
#include <linux/irq.h>
@ -282,3 +283,43 @@ int devm_irq_setup_generic_chip(struct device *dev, struct irq_chip_generic *gc,
}
EXPORT_SYMBOL_GPL(devm_irq_setup_generic_chip);
#endif /* CONFIG_GENERIC_IRQ_CHIP */
#ifdef CONFIG_IRQ_DOMAIN
static void devm_irq_domain_remove(struct device *dev, void *res)
{
struct irq_domain **domain = res;
irq_domain_remove(*domain);
}
/**
* devm_irq_domain_instantiate() - Instantiate a new irq domain data for a
* managed device.
* @dev: Device to instantiate the domain for
* @info: Domain information pointer pointing to the information for this
* domain
*
* Return: A pointer to the instantiated irq domain or an ERR_PTR value.
*/
struct irq_domain *devm_irq_domain_instantiate(struct device *dev,
const struct irq_domain_info *info)
{
struct irq_domain *domain;
struct irq_domain **dr;
dr = devres_alloc(devm_irq_domain_remove, sizeof(*dr), GFP_KERNEL);
if (!dr)
return ERR_PTR(-ENOMEM);
domain = irq_domain_instantiate(info);
if (!IS_ERR(domain)) {
*dr = domain;
devres_add(dev, dr);
} else {
devres_free(dr);
}
return domain;
}
EXPORT_SYMBOL_GPL(devm_irq_domain_instantiate);
#endif /* CONFIG_IRQ_DOMAIN */