Messages in this thread Patch in this message | | | Subject | [PATCH v5 2/9] pci: Add hotplug_slot_ops.reset_slot() | From | Alex Williamson <> | Date | Thu, 08 Aug 2013 14:09:31 -0600 |
| |
This optional callback allows htoplug 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> --- include/linux/pci_hotplug.h | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/include/linux/pci_hotplug.h b/include/linux/pci_hotplug.h index 8db71dc..bd32109 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); }; /**
| |