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genirq/msi: Split msi_create_irq_domain()

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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: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Acked-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20221124232325.559086358@linutronix.de
This commit is contained in:
Thomas Gleixner 2022-11-25 00:25:52 +01:00
parent 61bf992fc6
commit a80c0aceea
1 changed files with 20 additions and 12 deletions
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32
kernel/irq/msi.c
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@ -758,17 +758,10 @@ 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,
struct msi_domain_info *info,
struct irq_domain *parent)
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