netdev - [PATCH v2 3/7] irqchip: armada-370-xp: Rework per-cpu interrupts handling

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Message-Id: <1443197378-30717-4-git-send-email-gregory.clement@free-electrons.com>
Date:	Fri, 25 Sep 2015 18:09:34 +0200
From:	Gregory CLEMENT <gregory.clement@...e-electrons.com>
To:	Thomas Gleixner <tglx@...utronix.de>,
	Jason Cooper <jason@...edaemon.net>,
	linux-kernel@...r.kernel.org,
	"David S. Miller" <davem@...emloft.net>, netdev@...r.kernel.org,
	Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>
Cc:	Andrew Lunn <andrew@...n.ch>,
	Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>,
	Gregory CLEMENT <gregory.clement@...e-electrons.com>,
	Lior Amsalem <alior@...vell.com>,
	Tawfik Bayouk <tawfik@...vell.com>,
	Nadav Haklai <nadavh@...vell.com>,
	Ezequiel Garcia <ezequiel.garcia@...e-electrons.com>,
	Maxime Ripard <maxime.ripard@...e-electrons.com>,
	Boris BREZILLON <boris.brezillon@...e-electrons.com>,
	Willy Tarreau <w@....eu>, linux-arm-kernel@...ts.infradead.org
Subject: [PATCH v2 3/7] irqchip: armada-370-xp: Rework per-cpu interrupts handling

From: Maxime Ripard <maxime.ripard@...e-electrons.com>

The MPIC driver currently has a list of interrupts to handle as per-cpu.

Since the timer, fabric and neta interrupts were the only per-cpu
interrupts in the system, we can now remove the switch and just check for
the hardware irq number to determine whether a given interrupt is per-cpu
or not.

Signed-off-by: Maxime Ripard <maxime.ripard@...e-electrons.com>
Acked-by: Gregory CLEMENT <gregory.clement@...e-electrons.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@...e-electrons.com>
---
 drivers/irqchip/irq-armada-370-xp.c | 14 ++++----------
 1 file changed, 4 insertions(+), 10 deletions(-)

diff --git a/drivers/irqchip/irq-armada-370-xp.c b/drivers/irqchip/irq-armada-370-xp.c
index 39b72da0c143..117848b46eaa 100644
--- a/drivers/irqchip/irq-armada-370-xp.c
+++ b/drivers/irqchip/irq-armada-370-xp.c
@@ -56,9 +56,6 @@
 
 #define ARMADA_370_XP_MAX_PER_CPU_IRQS		(28)
 
-#define ARMADA_370_XP_TIMER0_PER_CPU_IRQ	(5)
-#define ARMADA_370_XP_FABRIC_IRQ		(3)
-
 #define IPI_DOORBELL_START                      (0)
 #define IPI_DOORBELL_END                        (8)
 #define IPI_DOORBELL_MASK                       0xFF
@@ -81,13 +78,10 @@ static phys_addr_t msi_doorbell_addr;
 
 static inline bool is_percpu_irq(irq_hw_number_t irq)
 {
-	switch (irq) {
-	case ARMADA_370_XP_TIMER0_PER_CPU_IRQ:
-	case ARMADA_370_XP_FABRIC_IRQ:
+	if (irq <= ARMADA_370_XP_MAX_PER_CPU_IRQS)
 		return true;
-	default:
-		return false;
-	}
+
+	return false;
 }
 
 /*
@@ -551,7 +545,7 @@ static void armada_370_xp_mpic_resume(void)
 		if (virq == 0)
 			continue;
 
-		if (irq != ARMADA_370_XP_TIMER0_PER_CPU_IRQ)
+		if (!is_percpu_irq(irq))
 			writel(irq, per_cpu_int_base +
 			       ARMADA_370_XP_INT_CLEAR_MASK_OFFS);
 		else
-- 
2.1.0

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