1 files changed, 8 insertions, 1 deletions

diff --git a/drivers/usb/storage/usb.h b/drivers/usb/storage/usb.h
index 0cd1eebc4497..7259fd1f6b0d 100644
--- a/drivers/usb/storage/usb.h
+++ b/drivers/usb/storage/usb.h
@@ -93,7 +93,11 @@ struct us_unusual_dev {
 typedef int (*trans_cmnd)(struct scsi_cmnd *, struct us_data*);
 typedef int (*trans_reset)(struct us_data*);
 typedef void (*proto_cmnd)(struct scsi_cmnd*, struct us_data*);
-typedef void (*extra_data_destructor)(void *);   /* extra data destructor   */
+typedef void (*extra_data_destructor)(void *);  /* extra data destructor */
+typedef void (*pm_hook)(struct us_data *, int); /* power management hook */
+
+#define US_SUSPEND      0
+#define US_RESUME       1
 
 /* we allocate one of these for every device that we remember */
 struct us_data {
@@ -149,6 +153,9 @@ struct us_data {
         /* subdriver information */
         void                    *extra;          /* Any extra data          */
         extra_data_destructor   extra_destructor;/* extra data destructor   */
+#ifdef CONFIG_PM
+        pm_hook                 suspend_resume_hook;
+#endif
 };
 
 /* Convert between us_data and the corresponding Scsi_Host */