Commit a80c0ace authored by Thomas Gleixner's avatar Thomas Gleixner
Browse files

genirq/msi: Split msi_create_irq_domain() 



Split the functionality of msi_create_irq_domain() so it can
be reused for creating per device irq domains.

No functional change.

Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
Reviewed-by: default avatarKevin Tian <kevin.tian@intel.com>
Acked-by: default avatarMarc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20221124232325.559086358@linutronix.de
parent 61bf992f

kernel/irq/msi.c

+20 −12
Original line number Diff line number Diff line
@@ -758,16 +758,9 @@ static void msi_domain_update_chip_ops(struct msi_domain_info *info) 
		chip->irq_set_affinity = msi_domain_set_affinity;

}



/**

 * msi_create_irq_domain - Create an MSI interrupt domain

 * @fwnode:	Optional fwnode of the interrupt controller

 * @info:	MSI domain info

 * @parent:	Parent irq domain

 *

 * Return: pointer to the created &struct irq_domain or %NULL on failure

 */

struct irq_domain *msi_create_irq_domain(struct fwnode_handle *fwnode,

static struct irq_domain *__msi_create_irq_domain(struct fwnode_handle *fwnode,

						  struct msi_domain_info *info,

						  unsigned int flags,

						  struct irq_domain *parent)

{

	struct irq_domain *domain;
@@ -787,7 +780,7 @@ struct irq_domain *msi_create_irq_domain(struct fwnode_handle *fwnode, 
	if (info->flags & MSI_FLAG_USE_DEF_CHIP_OPS)

		msi_domain_update_chip_ops(info);



	domain = irq_domain_create_hierarchy(parent, IRQ_DOMAIN_FLAG_MSI, 0,

	domain = irq_domain_create_hierarchy(parent, flags | IRQ_DOMAIN_FLAG_MSI, 0,

					     fwnode, &msi_domain_ops, info);



	if (domain) {
@@ -799,6 +792,21 @@ struct irq_domain *msi_create_irq_domain(struct fwnode_handle *fwnode, 
	return domain;

}



/**

 * msi_create_irq_domain - Create an MSI interrupt domain

 * @fwnode:	Optional fwnode of the interrupt controller

 * @info:	MSI domain info

 * @parent:	Parent irq domain

 *

 * Return: pointer to the created &struct irq_domain or %NULL on failure

 */

struct irq_domain *msi_create_irq_domain(struct fwnode_handle *fwnode,

					 struct msi_domain_info *info,

					 struct irq_domain *parent)

{

	return __msi_create_irq_domain(fwnode, info, 0, parent);

}



/**

 * msi_parent_init_dev_msi_info - Delegate initialization of device MSI info down

 *				  in the domain hierarchy