* Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>:
> On Wed, 18 Mar 2009 16:40:01 -0600 Alex Chiang <achiang@xxxxxx> wrote:
>
> > +#ifdef CONFIG_HOTPLUG
> > +static DEFINE_MUTEX(pci_remove_rescan_mutex);
> > +static ssize_t bus_rescan_store(struct bus_type *bus, const char *buf,
> > + size_t count)
> > +{
> > + unsigned long val;
> > + struct pci_bus *b = NULL;
> > +
> > + if (strict_strtoul(buf, 0, &val) < 0)
> > + return -EINVAL;
> > +
> > + if (!capable(CAP_SYS_ADMIN))
> > + return -EPERM;
> > +
> > + if (val) {
> > + mutex_lock(&pci_remove_rescan_mutex);
> > + while ((b = pci_find_next_bus(b)) != NULL)
> > + pci_rescan_bus(b);
> > + mutex_unlock(&pci_remove_rescan_mutex);
> > + }
> > + return count;
> > +}
> > +
> > +struct bus_attribute pci_bus_attrs[] = {
> > + __ATTR(rescan, S_IWUSR, NULL, bus_rescan_store),
> > + __ATTR_NULL
> > +};
> > +#endif
>
> Why CONFIG_HOTPLUG rather than CONFIG_HOTPLUG_PCI (or similar)?
I first started out with CONFIG_HOTPLUG_PCI but then all that
stuff got compiled out, and I couldn't figure out why at the
time.
I'll go back and try and figure out what's really going on. :-/
Thanks.
/ac
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