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genirq: Change hwirq parameter to irq_hw_number_t 

The irqdomain implementation internally represents hardware IRQs as
irq_hw_number_t, which is defined as unsigned long int. When providing
an irq_hw_number_t to the generic_handle_domain() functions that expect
and unsigned int hwirq, this can lead to a loss of information. Change
the hwirq parameter to irq_hw_number_t to support the full range of
hwirqs.

Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Niklas Schnelle <schnelle@linux.ibm.com>
Reviewed-by: Farhan Ali <alifm@linux.ibm.com>
Signed-off-by: Tobias Schumacher <ts@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
master
Tobias Schumacher 2025-12-04 06:05:01 +01:00 committed by Heiko Carstens
parent eb9780a1a3
commit 455a65260f
2 changed files with 6 additions and 6 deletions
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6
include/linux/irqdesc.h
View File

@ -182,9 +182,9 @@ int generic_handle_irq_safe(unsigned int irq);
* and handle the result interrupt number. Return -EINVAL if
* conversion failed.
*/
int generic_handle_domain_irq(struct irq_domain *domain, unsigned int hwirq);
int generic_handle_domain_irq_safe(struct irq_domain *domain, unsigned int hwirq);
int generic_handle_domain_nmi(struct irq_domain *domain, unsigned int hwirq);
int generic_handle_domain_irq(struct irq_domain *domain, irq_hw_number_t hwirq);
int generic_handle_domain_irq_safe(struct irq_domain *domain, irq_hw_number_t hwirq);
int generic_handle_domain_nmi(struct irq_domain *domain, irq_hw_number_t hwirq);
#endif
/* Test to see if a driver has successfully requested an irq */

6
kernel/irq/irqdesc.c
View File

@ -720,7 +720,7 @@ EXPORT_SYMBOL_GPL(generic_handle_irq_safe);
* This function must be called from an IRQ context with irq regs
* initialized.
*/
int generic_handle_domain_irq(struct irq_domain *domain, unsigned int hwirq)
int generic_handle_domain_irq(struct irq_domain *domain, irq_hw_number_t hwirq)
{
return handle_irq_desc(irq_resolve_mapping(domain, hwirq));
}
@ -738,7 +738,7 @@ EXPORT_SYMBOL_GPL(generic_handle_domain_irq);
* context). If the interrupt is marked as 'enforce IRQ-context only' then
* the function must be invoked from hard interrupt context.
*/
int generic_handle_domain_irq_safe(struct irq_domain *domain, unsigned int hwirq)
int generic_handle_domain_irq_safe(struct irq_domain *domain, irq_hw_number_t hwirq)
{
unsigned long flags;
int ret;
@ -761,7 +761,7 @@ EXPORT_SYMBOL_GPL(generic_handle_domain_irq_safe);
* This function must be called from an NMI context with irq regs
* initialized.
**/
int generic_handle_domain_nmi(struct irq_domain *domain, unsigned int hwirq)
int generic_handle_domain_nmi(struct irq_domain *domain, irq_hw_number_t hwirq)
{
WARN_ON_ONCE(!in_nmi());
return handle_irq_desc(irq_resolve_mapping(domain, hwirq));