From: Jianmin Lv <lvjianmin@loongson.cn>
To: Thomas Gleixner <tglx@linutronix.de>, Marc Zyngier <maz@kernel.org>
Cc: linux-kernel@vger.kernel.org, loongarch@lists.linux.dev,
Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
Jiaxun Yang <jiaxun.yang@flygoat.com>,
Huacai Chen <chenhuacai@loongson.cn>,
loongson-kernel@lists.loongnix.cn, stable@vger.kernel.org
Subject: [PATCH V2 4/5] irqchip/loongson-pch-pic: Fix registration of syscore_ops
Date: Fri, 31 Mar 2023 19:38:59 +0800 [thread overview]
Message-ID: <20230331113900.9105-5-lvjianmin@loongson.cn> (raw)
In-Reply-To: <20230331113900.9105-1-lvjianmin@loongson.cn>
When support suspend/resume for loongson-pch-pic, the syscore_ops
is registered twice in dual-bridges machines where there are two
pch-pic IRQ domains. Repeated registration of an same syscore_ops
broke syscore_ops_list, so the patch will corret it.
Fixes: 1ed008a2c331 ("irqchip/loongson-pch-pic: Add suspend/resume support")
Signed-off-by: Jianmin Lv <lvjianmin@loongson.cn>
---
drivers/irqchip/irq-loongson-pch-pic.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/irqchip/irq-loongson-pch-pic.c b/drivers/irqchip/irq-loongson-pch-pic.c
index 437f1af693d0..64fa67d4ee7a 100644
--- a/drivers/irqchip/irq-loongson-pch-pic.c
+++ b/drivers/irqchip/irq-loongson-pch-pic.c
@@ -311,7 +311,8 @@ static int pch_pic_init(phys_addr_t addr, unsigned long size, int vec_base,
pch_pic_handle[nr_pics] = domain_handle;
pch_pic_priv[nr_pics++] = priv;
- register_syscore_ops(&pch_pic_syscore_ops);
+ if (nr_pics == 1)
+ register_syscore_ops(&pch_pic_syscore_ops);
return 0;
--
2.31.1
next prev parent reply other threads:[~2023-03-31 11:39 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-03-31 11:38 [PATCH V2 0/5] Fix some issues of irq controllers for dual-bridges scenario Jianmin Lv
2023-03-31 11:38 ` [PATCH V2 1/5] irqchip/loongson-eiointc: Fix returned value on parsing MADT Jianmin Lv
2023-03-31 13:17 ` Greg KH
2023-04-01 1:36 ` Jianmin Lv
2023-03-31 11:38 ` [PATCH V2 2/5] irqchip/loongson-eiointc: Fix incorrect use of acpi_get_vec_parent Jianmin Lv
2023-03-31 11:38 ` [PATCH V2 3/5] irqchip/loongson-eiointc: Fix registration of syscore_ops Jianmin Lv
2023-03-31 11:39 ` kernel test robot
2023-03-31 11:38 ` Jianmin Lv [this message]
2023-03-31 11:39 ` [PATCH V2 5/5] irqchip/loongson-pch-pic: Fix pch_pic_acpi_init calling Jianmin Lv
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