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net: phy: sfp: make the i2c-bus dt property mandatory 

This patch makes the i2c-bus property mandatory when using a device
tree. If the sfp i2c bus isn't described it's impossible to guess the
protocol to use for a given module, and the sfp module would then not
work in most cases.

Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Antoine Tenart 2018-05-22 12:18:00 +02:00 committed by David S. Miller
parent a1f5d1f0df
commit 66ede1f9c9
1 changed files with 13 additions and 11 deletions
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24
drivers/net/phy/sfp.c
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@ -976,6 +976,7 @@ static int sfp_probe(struct platform_device *pdev)
if (pdev->dev.of_node) {
struct device_node *node = pdev->dev.of_node;
const struct of_device_id *id;
struct i2c_adapter *i2c;
struct device_node *np;
id = of_match_node(sfp_of_match, node);
@ -985,19 +986,20 @@ static int sfp_probe(struct platform_device *pdev)
sff = sfp->type = id->data;
np = of_parse_phandle(node, "i2c-bus", 0);
if (np) {
struct i2c_adapter *i2c;
if (!np) {
dev_err(sfp->dev, "missing 'i2c-bus' property\n");
return -ENODEV;
}
i2c = of_find_i2c_adapter_by_node(np);
of_node_put(np);
if (!i2c)
return -EPROBE_DEFER;
i2c = of_find_i2c_adapter_by_node(np);
of_node_put(np);
if (!i2c)
return -EPROBE_DEFER;
err = sfp_i2c_configure(sfp, i2c);
if (err < 0) {
i2c_put_adapter(i2c);
return err;
}
err = sfp_i2c_configure(sfp, i2c);
if (err < 0) {
i2c_put_adapter(i2c);
return err;
}
}