[SCSI] scsi_dh: Change the scsidh_activate interface to be asynchronous

Make scsi_dh_activate() function asynchronous, by taking in two additional
parameters, one is the callback function and the other is the data to call
the callback function with.

Signed-off-by: Chandra Seetharaman <sekharan@us.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>

1 files changed, 2 insertions, 1 deletions

diff --git a/include/scsi/scsi_device.h b/include/scsi/scsi_device.h
index 92c4c3bd916d..68d185c79bae 100644
--- a/include/scsi/scsi_device.h
+++ b/include/scsi/scsi_device.h
@@ -177,6 +177,7 @@ struct scsi_dh_devlist {
         char *model;
 };
 
+typedef void (*activate_complete)(void *, int);
 struct scsi_device_handler {
         /* Used by the infrastructure */
         struct list_head list; /* list of scsi_device_handlers */
@@ -188,7 +189,7 @@ struct scsi_device_handler {
         int (*check_sense)(struct scsi_device *, struct scsi_sense_hdr *);
         int (*attach)(struct scsi_device *);
         void (*detach)(struct scsi_device *);
-        int (*activate)(struct scsi_device *);
+        int (*activate)(struct scsi_device *, activate_complete, void *);
         int (*prep_fn)(struct scsi_device *, struct request *);
         int (*set_params)(struct scsi_device *, const char *);
 };