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iommu/rockchip: Free irqs in shutdown handler

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[ Upstream commit 74bc2abca7 ]

In the iommu's shutdown handler we disable runtime-pm which could
result in the irq-handler running unclocked and since commit
    3fc7c5c0cf ("iommu/rockchip: Handle errors returned from PM framework")
we warn about that fact.

This can cause warnings on shutdown on some Rockchip machines, so
free the irqs in the shutdown handler before we disable runtime-pm.

Reported-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Fixes: 3fc7c5c0cf ("iommu/rockchip: Handle errors returned from PM framework")
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Tested-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Heiko Stuebner
2018-10-20 09:47:09 +02:00
committed by Greg Kroah-Hartman
parent 1e23af485f
commit 0fe04d27b5
1 changed files with 6 additions and 0 deletions
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drivers/iommu/rockchip-iommu.c
+6
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@@ -1242,6 +1242,12 @@ err_unprepare_clocks:
static void rk_iommu_shutdown(struct platform_device *pdev)
{
struct rk_iommu *iommu = platform_get_drvdata(pdev);
int i = 0, irq;
while ((irq = platform_get_irq(pdev, i++)) != -ENXIO)
devm_free_irq(iommu->dev, irq, iommu);
pm_runtime_force_suspend(&pdev->dev);
}