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From:   Jiaxun Yang <jiaxun.yang@flygoat.com>
To:     linux-mips@vger.kernel.org
Cc:     Jiaxun Yang <jiaxun.yang@flygoat.com>,
        Huacai Chen <chenhc@lemote.com>,
        Thomas Gleixner <tglx@linutronix.de>,
        Jason Cooper <jason@lakedaemon.net>,
        Marc Zyngier <maz@kernel.org>,
        Rob Herring <robh+dt@kernel.org>,
        Mark Rutland <mark.rutland@arm.com>,
        Thomas Bogendoerfer <tsbogend@alpha.franken.de>,
        Allison Randal <allison@lohutok.net>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        linux-kernel@vger.kernel.org, devicetree@vger.kernel.org
Message-ID: <20200324153624.23109-7-jiaxun.yang@flygoat.com>
Subject: [PATCH v6 06/11] irqchip: mips-cpu: Convert to simple domain
Date:   Tue, 24 Mar 2020 23:36:03 +0800
In-Reply-To: <20200324153624.23109-1-jiaxun.yang@flygoat.com>
References: <20200324153624.23109-1-jiaxun.yang@flygoat.com>
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The old code is using legacy domain to setup irq_domain for CPU interrupts
which requires irq_desc to be preallocated.

However, when MIPS_CPU_IRQ_BASE >=3D 16, irq_desc for CPU IRQs may end up
unallocated and lead to incorrect behavior.

Thus we convert the legacy domain to simple domain which can allocate irq_d=
esc
during initialization.

Co-developed-by: Huacai Chen <chenhc@lemote.com>
Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
---
 drivers/irqchip/irq-mips-cpu.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/irqchip/irq-mips-cpu.c b/drivers/irqchip/irq-mips-cpu.=
c
index 95d4fd8f7a96..c3cf7fa76424 100644
--- a/drivers/irqchip/irq-mips-cpu.c
+++ b/drivers/irqchip/irq-mips-cpu.c
@@ -251,7 +251,7 @@ static void __init __mips_cpu_irq_init(struct device_no=
de *of_node)
 =09clear_c0_status(ST0_IM);
 =09clear_c0_cause(CAUSEF_IP);
=20
-=09irq_domain =3D irq_domain_add_legacy(of_node, 8, MIPS_CPU_IRQ_BASE, 0,
+=09irq_domain =3D irq_domain_add_simple(of_node, 8, MIPS_CPU_IRQ_BASE,
 =09=09=09=09=09   &mips_cpu_intc_irq_domain_ops,
 =09=09=09=09=09   NULL);
 =09if (!irq_domain)
--=20
2.26.0.rc2