diff options
| author | Alex Williamson <alex.williamson@redhat.com> | 2013-08-08 14:09:31 -0600 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2013-08-14 14:55:04 -0600 |
| commit | 5c32b35b004f5ef70dcf62bbc42b8bed1e50b471 (patch) | |
| tree | b9d3e4959d856b639072364025b9a856de593fc1 | |
| parent | 64e8674fbe6bc848333a9b7e19f8cc019dde9eab (diff) | |
PCI: Add hotplug_slot_ops.reset_slot()
This optional callback allows hotplug controllers to perform slot
specific resets. These may be necessary in cases where a normal
secondary bus reset can interact with controller logic and expose
spurious hotplugs.
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
| -rw-r--r-- | include/linux/pci_hotplug.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/pci_hotplug.h b/include/linux/pci_hotplug.h index 8db71dcd633..bd32109e607 100644 --- a/include/linux/pci_hotplug.h +++ b/include/linux/pci_hotplug.h @@ -63,6 +63,9 @@ enum pcie_link_width { * @get_adapter_status: Called to get see if an adapter is present in the slot or not. * If this field is NULL, the value passed in the struct hotplug_slot_info * will be used when this value is requested by a user. + * @reset_slot: Optional interface to allow override of a bus reset for the + * slot for cases where a secondary bus reset can result in spurious + * hotplug events or where a slot can be reset independent of the bus. * * The table of function pointers that is passed to the hotplug pci core by a * hotplug pci driver. These functions are called by the hotplug pci core when @@ -80,6 +83,7 @@ struct hotplug_slot_ops { int (*get_attention_status) (struct hotplug_slot *slot, u8 *value); int (*get_latch_status) (struct hotplug_slot *slot, u8 *value); int (*get_adapter_status) (struct hotplug_slot *slot, u8 *value); + int (*reset_slot) (struct hotplug_slot *slot, int probe); }; /** |