Messages in this thread | | | Date | Thu, 19 Mar 2009 02:34:53 -0700 | From | Andrew Morton <> | Subject | Re: [PATCH v4 07/12] PCI: Introduce /sys/bus/pci/rescan |
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On Wed, 18 Mar 2009 16:40:01 -0600 Alex Chiang <achiang@hp.com> 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)?
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