diff mbox series

[PATCHv4,5/7] crypto: sa2ul: add device links to child devices

Message ID 20200615071452.25141-6-t-kristo@ti.com (mailing list archive)
State Changes Requested
Delegated to: Herbert Xu
Headers show
Series crypto: sa2ul support for TI K3 SoCs | expand

Commit Message

Tero Kristo June 15, 2020, 7:14 a.m. UTC 
The child devices for sa2ul (like the RNG) have hard dependency towards
the parent, they can't function without the parent enabled. Add device
link for this purpose so that the dependencies are taken care of properly.

Signed-off-by: Tero Kristo <t-kristo@ti.com>
---
 drivers/crypto/sa2ul.c | 11 +++++++++++
 1 file changed, 11 insertions(+)
diff mbox series

Patch

diff --git a/drivers/crypto/sa2ul.c b/drivers/crypto/sa2ul.c
index 52c204d91a44..7aca07931f04 100644
--- a/drivers/crypto/sa2ul.c
+++ b/drivers/crypto/sa2ul.c
@@ -2338,6 +2338,15 @@  static int sa_dma_init(struct sa_crypto_data *dd)
 	return ret;
 }
 
+static int sa_link_child(struct device *dev, void *data)
+{
+	struct device *parent = data;
+
+	device_link_add(dev, parent, DL_FLAG_AUTOPROBE_CONSUMER);
+
+	return 0;
+}
+
 static int sa_ul_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
@@ -2388,6 +2397,8 @@  static int sa_ul_probe(struct platform_device *pdev)
 	if (ret)
 		goto release_dma;
 
+	device_for_each_child(&pdev->dev, &pdev->dev, sa_link_child);
+
 	return 0;
 
 release_dma: