linux-kernel - [PATCH v4 5/5] ARC: [intc-*] switch to linear domain

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Date:	Wed, 13 Apr 2016 17:10:05 +0530
From:	Vineet Gupta <Vineet.Gupta1@...opsys.com>
To:	Marc Zyngier <marc.zyngier@....com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Jason Cooper <jason@...edaemon.net>,
	Daniel Lezcano <daniel.lezcano@...aro.org>
CC:	<linux-snps-arc@...ts.infradead.org>,
	<linux-kernel@...r.kernel.org>, Noam Camus <noamc@...hip.com>,
	Vineet Gupta <Vineet.Gupta1@...opsys.com>
Subject: [PATCH v4 5/5] ARC: [intc-*] switch to linear domain

Now that we have Timers probed from DT, don't need legacy domain

This however requires mapping to be called explicitly for the IRQ which
still can't (and probably never) be probed from DT such as IPI and
SOFTIRQ

Signed-off-by: Vineet Gupta <vgupta@...opsys.com>
---
 arch/arc/kernel/intc-arcv2.c   | 8 ++++++--
 arch/arc/kernel/intc-compact.c | 2 +-
 2 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/arch/arc/kernel/intc-arcv2.c b/arch/arc/kernel/intc-arcv2.c
index 592cc977151e..6c24faf48b16 100644
--- a/arch/arc/kernel/intc-arcv2.c
+++ b/arch/arc/kernel/intc-arcv2.c
@@ -146,8 +146,7 @@ init_onchip_IRQ(struct device_node *intc, struct device_node *parent)
 	if (parent)
 		panic("DeviceTree incore intc not a root irq controller\n");
 
-	root_domain = irq_domain_add_legacy(intc, NR_CPU_IRQS, 0, 0,
-					    &arcv2_irq_ops, NULL);
+	root_domain = irq_domain_add_linear(intc, NR_CPU_IRQS, &arcv2_irq_ops, NULL);
 	if (!root_domain)
 		panic("root irq domain not avail\n");
 
@@ -157,6 +156,11 @@ init_onchip_IRQ(struct device_node *intc, struct device_node *parent)
 	 */
 	irq_set_default_host(root_domain);
 
+#ifdef CONFIG_SMP
+	irq_create_mapping(root_domain, IPI_IRQ);
+#endif
+	irq_create_mapping(root_domain, SOFTIRQ_IRQ);
+
 	return 0;
 }
 
diff --git a/arch/arc/kernel/intc-compact.c b/arch/arc/kernel/intc-compact.c
index 48a8b24de23e..c5cceca36118 100644
--- a/arch/arc/kernel/intc-compact.c
+++ b/arch/arc/kernel/intc-compact.c
@@ -105,7 +105,7 @@ init_onchip_IRQ(struct device_node *intc, struct device_node *parent)
 	if (parent)
 		panic("DeviceTree incore intc not a root irq controller\n");
 
-	root_domain = irq_domain_add_legacy(intc, NR_CPU_IRQS, 0, 0,
+	root_domain = irq_domain_add_linear(intc, NR_CPU_IRQS,
 					    &arc_intc_domain_ops, NULL);
 	if (!root_domain)
 		panic("root irq domain not avail\n");
-- 
2.5.0