* [PATCH AUTOSEL 6.6 13/20] LoongArch: Define ARCH_IRQ_INIT_FLAGS as IRQ_NOPROBE
[not found] <20240903192425.1107562-1-sashal@kernel.org>
@ 2024-09-03 19:23 ` Sasha Levin
0 siblings, 0 replies; only message in thread
From: Sasha Levin @ 2024-09-03 19:23 UTC (permalink / raw)
To: linux-kernel, stable
Cc: Huacai Chen, Thomas Gleixner, Tianyang Zhang, Sasha Levin,
chenhuacai, wangliupu, lvjianmin, maobibo, yangtiezhu, loongarch
From: Huacai Chen <chenhuacai@loongson.cn>
[ 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>
---
arch/loongarch/include/asm/hw_irq.h | 2 ++
arch/loongarch/kernel/irq.c | 3 ---
2 files changed, 2 insertions(+), 3 deletions(-)
diff --git a/arch/loongarch/include/asm/hw_irq.h b/arch/loongarch/include/asm/hw_irq.h
index af4f4e8fbd858..8156ffb674159 100644
--- a/arch/loongarch/include/asm/hw_irq.h
+++ b/arch/loongarch/include/asm/hw_irq.h
@@ -9,6 +9,8 @@
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
* machines, we'll see ...
diff --git a/arch/loongarch/kernel/irq.c b/arch/loongarch/kernel/irq.c
index 883e5066ae445..df42c063f6c43 100644
--- a/arch/loongarch/kernel/irq.c
+++ b/arch/loongarch/kernel/irq.c
@@ -122,9 +122,6 @@ void __init init_IRQ(void)
panic("IPI IRQ request failed\n");
#endif
- for (i = 0; i < NR_IRQS; i++)
- irq_set_noprobe(i);
-
for_each_possible_cpu(i) {
page = alloc_pages_node(cpu_to_node(i), GFP_KERNEL, order);
--
2.43.0
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