i2c: i2c-arb-gpio-challenge: use deferred probe when adapter not found

Wolfram Sang · Wolfram Sang · commit 0cd98069ad7a · 2013-10-10T10:22:34.000+02:00
If it is not there yet, it might appear later.

Signed-off-by: Wolfram Sang &lt;wsa@the-dreams.de&gt;
diff --git a/drivers/i2c/muxes/i2c-arb-gpio-challenge.c b/drivers/i2c/muxes/i2c-arb-gpio-challenge.c
@@ -200,7 +200,7 @@ static int i2c_arbitrator_probe(struct platform_device *pdev)
 	arb->parent = of_find_i2c_adapter_by_node(parent_np);
 	if (!arb->parent) {
 		dev_err(dev, "Cannot find parent bus\n");
-		return -EINVAL;
+		return -EPROBE_DEFER;
 	}
 
 	/* Actually add the mux adapter */

Original file line number	Diff line number	Diff line change
`@@ -200,7 +200,7 @@ static int i2c_arbitrator_probe(struct platform_device *pdev)`
`200`	`200`	`arb->parent = of_find_i2c_adapter_by_node(parent_np);`
`201`	`201`	`if (!arb->parent) {`
`202`	`202`	`dev_err(dev, "Cannot find parent bus\n");`
`203`		`- return -EINVAL;`
	`203`	`+ return -EPROBE_DEFER;`
`204`	`204`	`}`
`205`	`205`
`206`	`206`	`/* Actually add the mux adapter */`