Commit b68c67f5 authored by Huacai Chen's avatar Huacai Chen Committed by Wen Zhiwei
Browse files

LoongArch: Define ARCH_IRQ_INIT_FLAGS as IRQ_NOPROBE 

stable inclusion
from stable-v6.6.53
commit 8a834f251f6cc414cda4656fc556bfc813652eaa
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/IAZ0GM

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=8a834f251f6cc414cda4656fc556bfc813652eaa



--------------------------------

[ 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: default avatarThomas Gleixner <tglx@linutronix.de>
Signed-off-by: default avatarHuacai Chen <chenhuacai@loongson.cn>
Signed-off-by: default avatarTianyang Zhang <zhangtianyang@loongson.cn>
Signed-off-by: default avatarSasha Levin <sashal@kernel.org>
Signed-off-by: default avatarWen Zhiwei <wenzhiwei@kylinos.cn>
parent 819b6e3d

arch/loongarch/include/asm/hw_irq.h

+2 −0
Original line number Diff line number Diff line
@@ -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 ...

arch/loongarch/kernel/irq.c

+0 −3
Original line number Diff line number Diff line
@@ -150,9 +150,6 @@ void __init init_IRQ(void) 
	smp_ops.init_ipi();

#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);