[PATCH 07/11] hpsa: do not reset unknown boards on reset_devices

["Stephen M. Cameron" <scameron@beardog.cce.hp.com>]

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

This is to prevent hpsa from resetting older boards
which the cciss driver may be controlling.

Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
---
 drivers/scsi/hpsa.c |    6 +++++-
 1 files changed, 5 insertions(+), 1 deletions(-)

diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c
index 688b243..5b9cd41 100644
--- a/drivers/scsi/hpsa.c
+++ b/drivers/scsi/hpsa.c
@@ -3140,7 +3140,11 @@ static __devinit int hpsa_kdump_hard_reset_controller(struct pci_dev *pdev)
 	 * likely not be happy.  Just forbid resetting this conjoined mess.
 	 * The 640x isn't really supported by hpsa anyway.
 	 */
-	hpsa_lookup_board_id(pdev, &board_id);
+	rc = hpsa_lookup_board_id(pdev, &board_id);
+	if (rc < 0) {
+		dev_warn(&pdev->dev, "Not resetting device.\n");
+		return -ENODEV;
+	}
 	if (board_id == 0x409C0E11 || board_id == 0x409D0E11)
 		return -ENOTSUPP;