linux-kernel - [PATCH 21/30] hpsa: Add an shost_to

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Date:	Thu, 04 Feb 2010 08:43:11 -0600
From:	"Stephen M. Cameron" <scameron@...rdog.cce.hp.com>
To:	James.Bottomley@...senPartnership.com, akpm@...ux-foundation.org
Cc:	mikem@...rdog.cce.hp.com, brace@...rdog.cce.hp.com,
	matthew.gates@...com, linux-scsi@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH 21/30] hpsa: Add an shost_to_hba helper function.

From: Stephen M. Cameron <scameron@...rdog.cce.hp.com>

hpsa: Add an shost_to_hba helper function.

Signed-off-by: Stephen M. Cameron <scameron@...rdog.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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