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Code Issues Releases Wiki Activity

genirq/irqdomain: Remove unused irq_domain_check_msi_remap() code

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After converting the users of irq_domain_check_msi_remap() it and the
helpers are no longer needed.

The new version does not require all the #ifdef helpers and inlines
because CONFIG_GENERIC_MSI_IRQ always requires CONFIG_IRQ_DOMAIN and
IRQ_DOMAIN_HIERARCHY.

Link: https://lore.kernel.org/r/5-v3-3313bb5dd3a3+10f11-secure_msi_jgg@nvidia.com
Tested-by: Matthew Rosato <mjrosato@linux.ibm.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
This commit is contained in:
Jason Gunthorpe 2022-12-08 10:51:02 -04:00
parent 25fc417f79
commit a5e72a6bac
2 changed files with 0 additions and 62 deletions
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23
include/linux/irqdomain.h
View file

@ -276,7 +276,6 @@ struct irq_domain *irq_domain_create_legacy(struct fwnode_handle *fwnode,
void *host_data);
extern struct irq_domain *irq_find_matching_fwspec(struct irq_fwspec *fwspec,
enum irq_domain_bus_token bus_token);
extern bool irq_domain_check_msi_remap(void);
extern void irq_set_default_host(struct irq_domain *host);
extern struct irq_domain *irq_get_default_host(void);
extern int irq_domain_alloc_descs(int virq, unsigned int nr_irqs,
@ -559,13 +558,6 @@ static inline bool irq_domain_is_msi(struct irq_domain *domain)
return domain->flags & IRQ_DOMAIN_FLAG_MSI;
}
static inline bool irq_domain_is_msi_remap(struct irq_domain *domain)
{
return domain->flags & IRQ_DOMAIN_FLAG_MSI_REMAP;
}
extern bool irq_domain_hierarchical_is_msi_remap(struct irq_domain *domain);
static inline bool irq_domain_is_msi_parent(struct irq_domain *domain)
{
return domain->flags & IRQ_DOMAIN_FLAG_MSI_PARENT;
@ -611,17 +603,6 @@ static inline bool irq_domain_is_msi(struct irq_domain *domain)
return false;
}
static inline bool irq_domain_is_msi_remap(struct irq_domain *domain)
{
return false;
}
static inline bool
irq_domain_hierarchical_is_msi_remap(struct irq_domain *domain)
{
return false;
}
static inline bool irq_domain_is_msi_parent(struct irq_domain *domain)
{
return false;
@ -641,10 +622,6 @@ static inline struct irq_domain *irq_find_matching_fwnode(
{
return NULL;
}
static inline bool irq_domain_check_msi_remap(void)
{
return false;
}
#endif /* !CONFIG_IRQ_DOMAIN */
#endif /* _LINUX_IRQDOMAIN_H */

39
kernel/irq/irqdomain.c
View file

@ -436,31 +436,6 @@ struct irq_domain *irq_find_matching_fwspec(struct irq_fwspec *fwspec,
}
EXPORT_SYMBOL_GPL(irq_find_matching_fwspec);
/**
* irq_domain_check_msi_remap - Check whether all MSI irq domains implement
* IRQ remapping
*
* Return: false if any MSI irq domain does not support IRQ remapping,
* true otherwise (including if there is no MSI irq domain)
*/
bool irq_domain_check_msi_remap(void)
{
struct irq_domain *h;
bool ret = true;
mutex_lock(&irq_domain_mutex);
list_for_each_entry(h, &irq_domain_list, link) {
if (irq_domain_is_msi(h) &&
!irq_domain_hierarchical_is_msi_remap(h)) {
ret = false;
break;
}
}
mutex_unlock(&irq_domain_mutex);
return ret;
}
EXPORT_SYMBOL_GPL(irq_domain_check_msi_remap);
/**
* irq_set_default_host() - Set a "default" irq domain
* @domain: default domain pointer
@ -1815,20 +1790,6 @@ static void irq_domain_check_hierarchy(struct irq_domain *domain)
if (domain->ops->alloc)
domain->flags |= IRQ_DOMAIN_FLAG_HIERARCHY;
}
/**
* irq_domain_hierarchical_is_msi_remap - Check if the domain or any
* parent has MSI remapping support
* @domain: domain pointer
*/
bool irq_domain_hierarchical_is_msi_remap(struct irq_domain *domain)
{
for (; domain; domain = domain->parent) {
if (irq_domain_is_msi_remap(domain))
return true;
}
return false;
}
#else /* CONFIG_IRQ_DOMAIN_HIERARCHY */
/**
* irq_domain_get_irq_data - Get irq_data associated with @virq and @domain