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>

diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c
index 5a99627368a392a0c36d028bf0150cff343ed36f..b64913f9d88062efd3b1799f0fd13dcbd95e47b6 100644 (file)
--- 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,