Commit 0c5b29a6 authored by Herve Codina's avatar Herve Codina Committed by Thomas Gleixner
Browse files

irqdomain: Add a resource managed version of irq_domain_instantiate() 



Add a devres version of irq_domain_instantiate().

Signed-off-by: default avatarHerve Codina <herve.codina@bootlin.com>
Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20240614173232.1184015-17-herve.codina@bootlin.com
parent e6f67ce3

include/linux/irqdomain.h

+2 −0
Original line number Diff line number Diff line
@@ -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,

kernel/irq/devres.c

+41 −0
Original line number Diff line number Diff line 
// 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 */