[RESEND,v17,3/5] iommu/arm-smmu: Add the device_link between masters and smmu

Submitted by Vivek Gautam on Nov. 16, 2018, 11:24 a.m.


Message ID 20181116112430.31248-4-vivek.gautam@codeaurora.org
State New
Headers show
Series "iommu/arm-smmu: Add runtime pm/sleep support" ( rev: 1 ) in Freedreno

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Commit Message

Vivek Gautam Nov. 16, 2018, 11:24 a.m.
From: Sricharan R <sricharan@codeaurora.org>

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 <sricharan@codeaurora.org>
Signed-off-by: Vivek Gautam <vivek.gautam@codeaurora.org>
Reviewed-by: Tomasz Figa <tfiga@chromium.org>
Tested-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
 drivers/iommu/arm-smmu.c | 3 +++
 1 file changed, 3 insertions(+)

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diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c
index cae88c9f83ca..2098c3141f5f 100644
--- a/drivers/iommu/arm-smmu.c
+++ b/drivers/iommu/arm-smmu.c
@@ -1493,6 +1493,9 @@  static int arm_smmu_add_device(struct device *dev)
 	iommu_device_link(&smmu->iommu, dev);
+	device_link_add(dev, smmu->dev,
 	return 0;