[SCSI] libsas: perform sas-transport resets in shost->workq context

Extend the sas transport class to allow transport users to attach extra
data to a sas_phy (->hostdata).  Use this area in libsas to move resets
to workq context in preparation for scheduling ata device resets through
libata-eh.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

1 files changed, 4 insertions, 1 deletions

diff --git a/include/scsi/scsi_transport_sas.h b/include/scsi/scsi_transport_sas.h
index 6d14daac7589..42817facaeda 100644
--- a/include/scsi/scsi_transport_sas.h
+++ b/include/scsi/scsi_transport_sas.h
@@ -75,7 +75,8 @@ struct sas_phy {
         /* for the list of phys belonging to a port */
         struct list_head        port_siblings;
 
-        struct work_struct      reset_work;
+        /* available to the lldd */
+        void                    *hostdata;
 };
 
 #define dev_to_phy(d) \
@@ -169,6 +170,8 @@ struct sas_function_template {
         int (*get_bay_identifier)(struct sas_rphy *);
         int (*phy_reset)(struct sas_phy *, int);
         int (*phy_enable)(struct sas_phy *, int);
+        int (*phy_setup)(struct sas_phy *);
+        void (*phy_release)(struct sas_phy *);
         int (*set_phy_speed)(struct sas_phy *, struct sas_phy_linkrates *);
         int (*smp_handler)(struct Scsi_Host *, struct sas_rphy *, struct request *);
 };