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Subject[PATCH 21/30] hpsa: Add an shost_to_hba helper function.
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From: Stephen M. Cameron <scameron@beardog.cce.hp.com>

hpsa: Add an shost_to_hba helper function.

Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
---
drivers/scsi/hpsa.c | 9 +++++++--
1 files changed, 7 insertions(+), 2 deletions(-)
diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c
index 320d686..e81df76 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);


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