[PATCH] of: platform: propagate of_devices_ensure_probed_by(name|property) errors

[Ahmad Fatoum]

The of_devices_ensure_probed_by functions are expected to return an
error code after iterating over all matching devices should any device
have failed its of_device_ensure_probed. Doing this unearths one common
failure: a matching node has status = "disabled". These will have
of_device_ensure_probed return -ENODEV, which makes sense for users
wanting to ensure a specific device is probed, but doesn't when
iterating over multiple nodes.

We already have of_devices_ensure_probed_by_dev_id, which does an early
of_device_is_available check, so do likewise for the other to
ensure_probed_by_* functions.

Signed-off-by: Ahmad Fatoum <a.fatoum at pengutronix.de>
---
 drivers/of/platform.c | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)

diff --git a/drivers/of/platform.c b/drivers/of/platform.c
index dc784ea8e550..a9a5d4c2daf2 100644
--- a/drivers/of/platform.c
+++ b/drivers/of/platform.c
@@ -525,12 +525,15 @@ int of_devices_ensure_probed_by_property(const char *property_name)
 		return 0;
 
 	for_each_node_with_property(node, property_name) {
-		ret = of_device_ensure_probed(node);
+		if (!of_device_is_available(node))
+			continue;
+
+		err = of_device_ensure_probed(node);
 		if (err)
 			ret = err;
 	}
 
-	return 0;
+	return ret;
 }
 EXPORT_SYMBOL_GPL(of_devices_ensure_probed_by_property);
 
@@ -543,12 +546,15 @@ int of_devices_ensure_probed_by_name(const char *name)
 		return 0;
 
 	for_each_node_by_name(node, name) {
-		ret = of_device_ensure_probed(node);
+		if (!of_device_is_available(node))
+			continue;
+
+		err = of_device_ensure_probed(node);
 		if (err)
 			ret = err;
 	}
 
-	return 0;
+	return ret;
 }
 EXPORT_SYMBOL_GPL(of_devices_ensure_probed_by_name);
 
-- 
2.30.2