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From: Sameer Pujar <spujar@nvidia.com>
To: <tglx@linutronix.de>, <jason@lakedaemon.net>,
	<marc.zyngier@arm.com>, <will.deacon@arm.com>,
	<catalin.marinas@arm.com>, <heiko@sntech.de>,
	<horms+renesas@verge.net.au>, <maxime.ripard@bootlin.com>,
	<andy.gross@linaro.org>, <olof@lixom.net>,
	<bjorn.andersson@linaro.org>, <jagan@amarulasolutions.com>,
	<enric.balletbo@collabora.com>, <stefan.wahren@i2se.com>,
	<ezequiel@collabora.com>, <marc.w.gonzalez@free.fr>,
	<christoffer.dall@arm.com>, <drjones@redhat.com>,
	<julien.thierry@arm.com>
Cc: Sameer Pujar <spujar@nvidia.com>,
	treding@nvidia.com, linux-kernel@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org, jonathanh@nvidia.com
Subject: [PATCH 5/5] irqchip/gic-pm: fix suspend handling
Date: Wed, 13 Mar 2019 16:32:36 +0530	[thread overview]
Message-ID: <1552474956-25513-5-git-send-email-spujar@nvidia.com> (raw)
In-Reply-To: <1552474956-25513-1-git-send-email-spujar@nvidia.com>

If interrupts are enabled for a non-root GIC device that uses the
gic-pm driver, when system suspend occurs, the current interrupt
state is not saved and restored correctly and so interrupts do not
work again on resuming the system. Add a late suspend handler to
save and restore the state for these devices.

Suggested-by: Jonathan Hunter <jonathanh@nvidia.com>
Signed-off-by: Sameer Pujar <spujar@nvidia.com>
---
 drivers/irqchip/irq-gic-pm.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/irqchip/irq-gic-pm.c b/drivers/irqchip/irq-gic-pm.c
index b5405df..583858d 100644
--- a/drivers/irqchip/irq-gic-pm.c
+++ b/drivers/irqchip/irq-gic-pm.c
@@ -180,6 +180,8 @@ static int gic_remove(struct platform_device *pdev)
 static const struct dev_pm_ops gic_pm_ops = {
 	SET_RUNTIME_PM_OPS(gic_runtime_suspend,
 			   gic_runtime_resume, NULL)
+	SET_LATE_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
+				     pm_runtime_force_resume)
 };
 
 static const char * const gic400_clocks[] = {
-- 
2.7.4


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  parent reply	other threads:[~2019-03-13 11:20 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-03-13 11:02 [PATCH 1/5] irqchip/gic-pm: add driver remove support Sameer Pujar
2019-03-13 11:02 ` [PATCH 2/5] irqchip/gic: allow gic-pm driver to be used as module Sameer Pujar
2019-03-13 11:02 ` [PATCH 3/5] arm64: defconfig: build gic-pm driver " Sameer Pujar
2019-03-13 11:02 ` [PATCH 4/5] irqchip/gic-pm: use devm_clk_*() helpers Sameer Pujar
2019-03-13 11:02 ` Sameer Pujar [this message]
2019-03-13 11:22 ` [PATCH 1/5] irqchip/gic-pm: add driver remove support Marc Zyngier
2019-03-13 13:50   ` Sameer Pujar
2019-03-13 14:20     ` Marc Zyngier
2019-03-13 16:34       ` Thierry Reding
2019-03-13 17:57         ` Marc Zyngier

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