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Subject[Patch v15 3/5] iommu/arm-smmu: Add the device_link between masters and smmu
From: Sricharan R <>

Finally add the device link between the master device and
smmu, so that the smmu gets runtime enabled/disabled only when the
master needs it. This is done from add_device callback which gets
called once when the master is added to the smmu.

Signed-off-by: Sricharan R <>
Signed-off-by: Vivek Gautam <>
Reviewed-by: Tomasz Figa <>
Tested-by: Srinivas Kandagatla <>

Changes since v14:
- none.

drivers/iommu/arm-smmu.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c
index 23b4a60149b6..b5e7f72d418c 100644
--- a/drivers/iommu/arm-smmu.c
+++ b/drivers/iommu/arm-smmu.c
@@ -1461,6 +1461,9 @@ static int arm_smmu_add_device(struct device *dev)

iommu_device_link(&smmu->iommu, dev);

+ device_link_add(dev, smmu->dev,
return 0;

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