From b324c07ac4771a6ac8f57a3e1897e1b36b0a9ff0 Mon Sep 17 00:00:00 2001
From: Florian Fainelli <f.fainelli@gmail.com>
Date: Thu, 5 Mar 2015 12:35:05 -0800
Subject: [PATCH] net: dsa: allow deferred probing
In preparation for allowing a different model to register DSA switches,
update dsa_of_probe() and dsa_probe() to return -EPROBE_DEFER where
appropriate.
Failure to find a phandle or Device Tree property is still fatal, but
looking up the internal device structure associated with a Device Tree
node is something that might need to be delayed based on driver probe
ordering.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
net/dsa/dsa.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/net/dsa/dsa.c b/net/dsa/dsa.c
index d804364150bd9..79879d01488af 100644
--- a/net/dsa/dsa.c
+++ b/net/dsa/dsa.c
@@ -583,7 +583,7 @@ static int dsa_of_probe(struct device *dev)
mdio_bus = of_mdio_find_bus(mdio);
if (!mdio_bus)
- return -EINVAL;
+ return -EPROBE_DEFER;
ethernet = of_parse_phandle(np, "dsa,ethernet", 0);
if (!ethernet)
@@ -591,7 +591,7 @@ static int dsa_of_probe(struct device *dev)
ethernet_dev = of_find_device_by_node(ethernet);
if (!ethernet_dev)
- return -ENODEV;
+ return -EPROBE_DEFER;
pd = kzalloc(sizeof(*pd), GFP_KERNEL);
if (!pd)
@@ -718,7 +718,7 @@ static int dsa_probe(struct platform_device *pdev)
dev = dev_to_net_device(pd->netdev);
if (dev == NULL) {
- ret = -EINVAL;
+ ret = -EPROBE_DEFER;
goto out;
}
--
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