From 9975ec9dbeb1775d29faaae50b31e2c19f740bf8 Mon Sep 17 00:00:00 2001
From: Don Brace <don.brace@pmcs.com>
Date: Wed, 4 Nov 2015 15:50:25 -0600
Subject: [PATCH] hpsa: check for null arguments to dev_printk

Check for NULLs.

Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Reviewed-by: Manoj Kumar <manoj@linux.vnet.ibm.com>
Signed-off-by: Don Brace <don.brace@pmcs.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
---
 drivers/scsi/hpsa.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c
index 5a99627368a3..b64913f9d880 100644
--- a/drivers/scsi/hpsa.c
+++ b/drivers/scsi/hpsa.c
@@ -1138,6 +1138,9 @@ static int hpsa_find_target_lun(struct ctlr_info *h,
 static inline void hpsa_show_dev_msg(const char *level, struct ctlr_info *h,
 	struct hpsa_scsi_dev_t *dev, char *description)
 {
+	if (h == NULL || h->pdev == NULL || h->scsi_host == NULL)
+		return;
+
 	dev_printk(level, &h->pdev->dev,
 			"scsi %d:%d:%d:%d: %s %s %.8s %.16s RAID-%s SSDSmartPathCap%c En%c Exp=%d\n",
 			h->scsi_host->host_no, dev->bus, dev->target, dev->lun,