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authorRafael J. Wysocki <rafael.j.wysocki@intel.com>2019-02-01 01:54:21 +0100
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2019-02-01 10:04:08 +0100
commitea4f640025183860792063ba5852aec60704ad8e (patch)
treea535928cb8aa9494bf5a097fffae1c1ad6ba244d /drivers/iommu/rockchip-iommu.c
parentdriver core: Do not call rpm_put_suppliers() in pm_runtime_drop_link() (diff)
downloadlinux-ea4f640025183860792063ba5852aec60704ad8e.tar.xz
linux-ea4f640025183860792063ba5852aec60704ad8e.zip
IOMMU: Make dwo drivers use stateless device links
The device links used by rockchip-iommu and exynos-iommu are completely managed by these drivers within the IOMMU framework, so there is no reason to involve the driver core in the management of these links. For this reason, make rockchip-iommu and exynos-iommu pass DL_FLAG_STATELESS in flags to device_link_add(), so that the device links used by them are stateless. [Note that this change is requisite for a subsequent one that will rework the management of stateful device links in the driver core and it will not be compatible with the two drivers in question any more.] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Acked-by: Marek Szyprowski <m.szyprowski@samsung.com> Acked-by: Joerg Roedel <jroedel@suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/iommu/rockchip-iommu.c')
-rw-r--r--drivers/iommu/rockchip-iommu.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/iommu/rockchip-iommu.c b/drivers/iommu/rockchip-iommu.c
index c9ba9f377f63..77d4bd93fe4b 100644
--- a/drivers/iommu/rockchip-iommu.c
+++ b/drivers/iommu/rockchip-iommu.c
@@ -1071,7 +1071,8 @@ static int rk_iommu_add_device(struct device *dev)
iommu_group_put(group);
iommu_device_link(&iommu->iommu, dev);
- data->link = device_link_add(dev, iommu->dev, DL_FLAG_PM_RUNTIME);
+ data->link = device_link_add(dev, iommu->dev,
+ DL_FLAG_STATELESS | DL_FLAG_PM_RUNTIME);
return 0;
}