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Commit 5c32b35b authored by Alex Williamson's avatar Alex Williamson Committed by Bjorn Helgaas
Browse files

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: default avatarAlex Williamson <alex.williamson@redhat.com>
Signed-off-by: default avatarBjorn Helgaas <bhelgaas@google.com>
parent 64e8674f

include/linux/pci_hotplug.h

+4 −0
Original line number Diff line number Diff line
@@ -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);

};



/**