linux-kernel - [PATCH 4.1 64/78] irqchip/crossbar: Restore the irq_set

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Message-Id: <20150911224615.634002851@linuxfoundation.org>
Date:	Fri, 11 Sep 2015 15:50:05 -0700
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org,
	Grygorii Strashko <grygorii.strashko@...com>,
	Sudeep Holla <sudeep.holla@....com>, linux@....linux.org.uk,
	nsekhar@...com, jason@...edaemon.net, balbi@...com,
	linux-arm-kernel@...ts.infradead.org, tony@...mide.com,
	marc.zyngier@....com, Thomas Gleixner <tglx@...utronix.de>
Subject: [PATCH 4.1 64/78] irqchip/crossbar: Restore the irq_set_type() mechanism

4.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Grygorii Strashko <grygorii.strashko@...com>

commit e269ec42328783e51be08c191aa935dba56141fc upstream.

The conversion of the crossbar irqchip to hierarchical irq domains
failed to provide a mechanism to properly set the trigger type of an
interrupt.

The crossbar irq chip itself has no mechanism and therefor no
irq_set_type() callback. The code before the conversion relayed the
trigger configuration directly to the underlying GIC.

Restore the correct behaviour by setting the crossbar irq_set_type
callback to irq_chip_set_type_parent(). This propagates the
set_trigger() call to the underlying GIC irqchip.

[ tglx: Massaged changelog ]

Fixes: 783d31863fb8 ('irqchip: crossbar: Convert dra7 crossbar...')
Signed-off-by: Grygorii Strashko <grygorii.strashko@...com>
Cc: Sudeep Holla <sudeep.holla@....com>
Cc: <linux@....linux.org.uk>
Cc: <nsekhar@...com>
Cc: <jason@...edaemon.net>
Cc: <balbi@...com>
Cc: <linux-arm-kernel@...ts.infradead.org>
Cc: <tony@...mide.com>
Cc: <marc.zyngier@....com>
Link: http://lkml.kernel.org/r/1439554830-19502-4-git-send-email-grygorii.strashko@ti.com
Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/irqchip/irq-crossbar.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/irqchip/irq-crossbar.c
+++ b/drivers/irqchip/irq-crossbar.c
@@ -69,6 +69,7 @@ static struct irq_chip crossbar_chip = {
 	.irq_unmask		= irq_chip_unmask_parent,
 	.irq_retrigger		= irq_chip_retrigger_hierarchy,
 	.irq_set_wake		= irq_chip_set_wake_parent,
+	.irq_set_type		= irq_chip_set_type_parent,
 #ifdef CONFIG_SMP
 	.irq_set_affinity	= irq_chip_set_affinity_parent,
 #endif


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