[SCSI] hpsa: Add an shost_to_hba helper function.

Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>

1 files changed, 7 insertions, 2 deletions

diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c
index 320d6863c44e..e81df76df821 100644
--- a/drivers/scsi/hpsa.c
+++ b/drivers/scsi/hpsa.c
@@ -197,6 +197,12 @@ static inline struct ctlr_info *sdev_to_hba(struct scsi_device *sdev)
         return (struct ctlr_info *) *priv;
 }
 
+static inline struct ctlr_info *shost_to_hba(struct Scsi_Host *sh)
+{
+        unsigned long *priv = shost_priv(sh);
+        return (struct ctlr_info *) *priv;
+}
+
 static struct task_struct *hpsa_scan_thread;
 static DEFINE_MUTEX(hpsa_scan_mutex);
 static LIST_HEAD(hpsa_scan_q);
@@ -381,8 +387,7 @@ static ssize_t host_store_rescan(struct device *dev,
 {
         struct ctlr_info *h;
         struct Scsi_Host *shost = class_to_shost(dev);
-        unsigned long *priv = shost_priv(shost);
-        h = (struct ctlr_info *) *priv;
+        h = shost_to_hba(shost);
         if (add_to_scan_list(h)) {
                 wake_up_process(hpsa_scan_thread);
                 wait_for_completion_interruptible(&h->scan_wait);