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i2c: i2c-mux-gpio: use deferred probing 

If the i2c-parent bus driver is not loaded, returning
-ENODEV will force people to unload and then reload the
module again to get it working.

Signed-off-by: Ionut Nicu <ioan.nicu.ext@nsn.com>
Acked-by: Peter Korsgaard <peter.korsgaard@barco.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
This commit is contained in:
Ionut Nicu 2013-10-09 11:50:45 +02:00 committed by Wolfram Sang
parent 492ed77bfa
commit 9937b8d89e
1 changed files with 2 additions and 2 deletions
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4
drivers/i2c/muxes/i2c-mux-gpio.c
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@ -79,7 +79,7 @@ static int i2c_mux_gpio_probe_dt(struct gpiomux *mux,
adapter = of_find_i2c_adapter_by_node(adapter_np);
if (!adapter) {
dev_err(&pdev->dev, "Cannot find parent bus\n");
return -ENODEV;
return -EPROBE_DEFER;
}
mux->data.parent = i2c_adapter_id(adapter);
put_device(&adapter->dev);
@ -181,7 +181,7 @@ static int i2c_mux_gpio_probe(struct platform_device *pdev)
if (!parent) {
dev_err(&pdev->dev, "Parent adapter (%d) not found\n",
mux->data.parent);
return -ENODEV;
return -EPROBE_DEFER;
}
mux->parent = parent;