[SCSI] mvsas: performance improvement using domain_device->lldd_dev

Using sticky field to improve retrieve performance by eliminating some
lookups in . Remove some spurious casts.

Signed-off-by: Ying Chu <jasonchu@marvell.com>
Signed-off-by: Andy Yan <ayan@marvell.com>
Signed-off-by: Ke Wei <kewei@marvell.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/scsi/mvsas/mv_sas.h b/drivers/scsi/mvsas/mv_sas.h
index 93735edff507..aa2270af1bac 100644
--- a/drivers/scsi/mvsas/mv_sas.h
+++ b/drivers/scsi/mvsas/mv_sas.h
@@ -231,7 +231,9 @@ struct mvs_phy {
 };
 
 struct mvs_device {
+        struct list_head                dev_entry;
         enum sas_dev_type dev_type;
+        struct mvs_info *mvi_info;
         struct domain_device *sas_device;
         u32 attached_phy;
         u32 device_id;
@@ -239,7 +241,6 @@ struct mvs_device {
         u8 taskfileset;
         u8 dev_status;
         u16 reserved;
-        struct list_head                dev_entry;
 };
 
 struct mvs_slot_info {