On Mon, Mar 27, 2017 at 09:00:06AM +0200, Krzysztof Opasiak wrote:
> >+static ssize_t ncontrollers_show(struct device *dev, struct device_attribute *attr,
> >+ char *out)
> >+{
> >+ char *s = out;
> >+
> >+ out += sprintf(out, "%d\n", vhci_num_controllers);
> >+ return out - s;
> >+}
> >+static DEVICE_ATTR_RO(ncontrollers);
> >+
>
> Why you need a special RO attribute for this? Can't just cannot
> check content of directory using for example scandir() to learn what
> we have?
We can learn or somebody simply tells, I chose the latter. This makes
it easier as the changelog says?
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