[PATCH v4 01/22] driver core: Add pre_probe callback to bus_type

[Mark Brown]

On Mon, Sep 07, 2015 at 02:23:26PM +0200, Tomeu Vizoso wrote:

> +	if (dev->bus && dev->bus->pre_probe) {
> +		ret = dev->bus->pre_probe(dev);
> +		if (ret) {
> +			if (ret == -EPROBE_DEFER)
> +				driver_deferred_probe_add(dev);
> +			ret = 0;
> +			goto out_unlock;
> +		}
> +	}

So if we get an error other than -EPROBE_DEFER we silently ignore it?
That seems surprising and at least worth a comment.

> +	if (dev->bus && dev->bus->pre_probe) {
> +		ret = dev->bus->pre_probe(dev);
> +		if (ret) {
> +			if (ret == -EPROBE_DEFER)
> +				driver_deferred_probe_add(dev);
> +			goto out;
> +		}
> +	}

That's more what I'd expect.
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