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LoongArch: Define ARCH_IRQ_INIT_FLAGS as IRQ_NOPROBE

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[ Upstream commit 274ea3563e5ab9f468c15bfb9d2492803a66d9be ]

Currently we call irq_set_noprobe() in a loop for all IRQs, but indeed
it only works for IRQs below NR_IRQS_LEGACY because at init_IRQ() only
legacy interrupts have been allocated.

Instead, we can define ARCH_IRQ_INIT_FLAGS as IRQ_NOPROBE in asm/hwirq.h
and the core will automatically set the flag for all interrupts.

Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Signed-off-by: Tianyang Zhang <zhangtianyang@loongson.cn>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Huacai Chen
2024-08-26 23:11:32 +08:00
committed by Greg Kroah-Hartman
parent bb06a6e78e
commit f0eb100965
2 changed files with 2 additions and 3 deletions
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2
arch/loongarch/include/asm/hw_irq.h
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@@ -9,6 +9,8 @@
extern atomic_t irq_err_count; extern atomic_t irq_err_count;
#define ARCH_IRQ_INIT_FLAGS IRQ_NOPROBE
/* /*
* interrupt-retrigger: NOP for now. This may not be appropriate for all * interrupt-retrigger: NOP for now. This may not be appropriate for all
* machines, we'll see ... * machines, we'll see ...

3
arch/loongarch/kernel/irq.c
View File

@@ -122,9 +122,6 @@ void __init init_IRQ(void)
panic("IPI IRQ request failed\n"); panic("IPI IRQ request failed\n");
#endif #endif
for (i = 0; i < NR_IRQS; i++)
irq_set_noprobe(i);
for_each_possible_cpu(i) { for_each_possible_cpu(i) {
page = alloc_pages_node(cpu_to_node(i), GFP_KERNEL, order); page = alloc_pages_node(cpu_to_node(i), GFP_KERNEL, order);