irqchip/crossbar: Restore the mask on suspend behaviour
authorGrygorii Strashko <grygorii.strashko@ti.com>
Fri, 14 Aug 2015 12:20:29 +0000 (15:20 +0300)
committerThomas Gleixner <tglx@linutronix.de>
Wed, 19 Aug 2015 22:25:25 +0000 (00:25 +0200)
commit4fd8f47e7e5b64a74b60f23c2e08ba8234d659d1
tree7d468c7f7fae93c2eacb85b49b8c483ff909e756
parent63059a272398ef5dc1bd7065a036e8b6e82d1af7
irqchip/crossbar: Restore the mask on suspend behaviour

The ARM GIC requires that all interrupts which are not used as a
wakeup source have to be masked during suspend.

The conversion of the crossbar irqchip to hierarchical irq domains
failed to mark the crossbar irqchip with the IRQCHIP_MASK_ON_SUSPEND
flag and therefor broke the suspend requirement of the GIC.

Before the conversion the flags were visible because the GIC was the
top level irqchip. After the conversion the crossbar irqchip is the
top level irq chip whose flags are evaluated in suspend_device_irq().
As the flag is not set the masking of the non-wakeup irqs is not
invoked which breaks suspend.

Add the IRQCHIP_MASK_ON_SUSPEND flag to the crossbar irqchip, so the
GIC interrupts get masked properly.

[ tglx: Massaged changelog ]

Fixes: 783d31863fb8 ('irqchip: crossbar: Convert dra7 crossbar...')
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Cc: Sudeep Holla <sudeep.holla@arm.com>
Cc: <linux@arm.linux.org.uk>
Cc: <nsekhar@ti.com>
Cc: <jason@lakedaemon.net>
Cc: <balbi@ti.com>
Cc: <linux-arm-kernel@lists.infradead.org>
Cc: <tony@atomide.com>
Cc: <marc.zyngier@arm.com>
Cc: stable@vger.kernel.org # 4.1
Link: http://lkml.kernel.org/r/1439554830-19502-6-git-send-email-grygorii.strashko@ti.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
drivers/irqchip/irq-crossbar.c