[irqchip: irq/irqchip-next] irq: mips: simplify do_domain_IRQ()

[irqchip-bot for Mark Rutland]

The following commit has been merged into the irq/irqchip-next branch of irqchip:

Commit-ID:     4cb6f4df976b288aa02bbb658d38e73d34d8231f
Gitweb:        https://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms/4cb6f4df976b288aa02bbb658d38e73d34d8231f
Author:        Mark Rutland <mark.rutland@xxxxxxx>
AuthorDate:    Wed, 20 Oct 2021 18:20:32 +01:00
Committer:     Mark Rutland <mark.rutland@xxxxxxx>
CommitterDate: Mon, 25 Oct 2021 10:05:08 +01:00

irq: mips: simplify do_domain_IRQ()

There's no need fpr arch/mips's do_domain_IRQ() to open-code the NULL
check performed by handle_irq_desc(), nor the resolution of the desc
performed by generic_handle_domain_irq().

Use generic_handle_domain_irq() directly, as this is functioanlly
equivalent and clearer.

There should be no functional change as a result of this patch.

Signed-off-by: Mark Rutland <mark.rutland@xxxxxxx>
Reviewed-by: Marc Zyngier <maz@xxxxxxxxxx>
Acked-by: Thomas Bogendoerfer <tsbogend@xxxxxxxxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
---
 arch/mips/kernel/irq.c | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/arch/mips/kernel/irq.c b/arch/mips/kernel/irq.c
index d20e002..1fee96e 100644
--- a/arch/mips/kernel/irq.c
+++ b/arch/mips/kernel/irq.c
@@ -115,11 +115,7 @@ void __irq_entry do_domain_IRQ(struct irq_domain *domain, unsigned int hwirq)
 
 	irq_enter();
 	check_stack_overflow();
-
-	desc = irq_resolve_mapping(domain, hwirq);
-	if (likely(desc))
-		handle_irq_desc(desc);
-
+	generic_handle_domain_irq(domain, hwirq);
 	irq_exit();
 }
 #endif