linux-kernel - [tip:irq/core] irqchip/bcm-7038-l1: Report that effective affinity is a single target

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Date:   Fri, 18 Aug 2017 02:00:24 -0700
From:   tip-bot for Marc Zyngier <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     xuwei5@...ilicon.com, james.hogan@...tec.com, hpa@...or.com,
        gregory.clement@...e-electrons.com, andrew@...n.ch,
        linux-kernel@...r.kernel.org, f.fainelli@...il.com,
        tglx@...utronix.de, jason@...edaemon.net, chris@...kel.net,
        paul.burton@...tec.com, sebastian.hesselbarth@...il.com,
        matt.redfearn@...tec.com, cernekee@...il.com, marc.zyngier@....com,
        mingo@...nel.org, jcmvbkbc@...il.com
Subject: [tip:irq/core] irqchip/bcm-7038-l1: Report that effective affinity
 is a single target

Commit-ID:  b8d9884ac6c2c5222ea4a2d23bf9bec613e8eacc
Gitweb:     http://git.kernel.org/tip/b8d9884ac6c2c5222ea4a2d23bf9bec613e8eacc
Author:     Marc Zyngier <marc.zyngier@....com>
AuthorDate: Fri, 18 Aug 2017 09:39:21 +0100
Committer:  Thomas Gleixner <tglx@...utronix.de>
CommitDate: Fri, 18 Aug 2017 10:54:42 +0200

irqchip/bcm-7038-l1: Report that effective affinity is a single target

The BCM 7038-L1 driver only targets a single CPU at a time, even if
the notional affinity is wider. Let's inform the core code
about this.

Signed-off-by: Marc Zyngier <marc.zyngier@....com>
Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Cc: Andrew Lunn <andrew@...n.ch>
Cc: James Hogan <james.hogan@...tec.com>
Cc: Jason Cooper <jason@...edaemon.net>
Cc: Paul Burton <paul.burton@...tec.com>
Cc: Chris Zankel <chris@...kel.net>
Cc: Kevin Cernekee <cernekee@...il.com>
Cc: Wei Xu <xuwei5@...ilicon.com>
Cc: Max Filippov <jcmvbkbc@...il.com>
Cc: Florian Fainelli <f.fainelli@...il.com>
Cc: Gregory Clement <gregory.clement@...e-electrons.com>
Cc: Matt Redfearn <matt.redfearn@...tec.com>
Cc: Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>
Link: http://lkml.kernel.org/r/20170818083925.10108-9-marc.zyngier@arm.com

---
 drivers/irqchip/Kconfig          | 1 +
 drivers/irqchip/irq-bcm7038-l1.c | 3 +++
 2 files changed, 4 insertions(+)

diff --git a/drivers/irqchip/Kconfig b/drivers/irqchip/Kconfig
index b36a55d..39bfa5b 100644
--- a/drivers/irqchip/Kconfig
+++ b/drivers/irqchip/Kconfig
@@ -102,6 +102,7 @@ config BCM7038_L1_IRQ
 	bool
 	select GENERIC_IRQ_CHIP
 	select IRQ_DOMAIN
+	select GENERIC_IRQ_EFFECTIVE_AFF_MASK
 
 config BCM7120_L2_IRQ
 	bool
diff --git a/drivers/irqchip/irq-bcm7038-l1.c b/drivers/irqchip/irq-bcm7038-l1.c
index c2662a1..55cfb98 100644
--- a/drivers/irqchip/irq-bcm7038-l1.c
+++ b/drivers/irqchip/irq-bcm7038-l1.c
@@ -212,6 +212,8 @@ static int bcm7038_l1_set_affinity(struct irq_data *d,
 		__bcm7038_l1_unmask(d, first_cpu);
 
 	raw_spin_unlock_irqrestore(&intc->lock, flags);
+	irq_data_update_effective_affinity(d, cpumask_of(first_cpu));
+
 	return 0;
 }
 
@@ -299,6 +301,7 @@ static int bcm7038_l1_map(struct irq_domain *d, unsigned int virq,
 {
 	irq_set_chip_and_handler(virq, &bcm7038_l1_irq_chip, handle_level_irq);
 	irq_set_chip_data(virq, d->host_data);
+	irqd_set_single_target(irq_desc_get_irq_data(irq_to_desc(virq)));
 	return 0;
 }