[SCSI] mptsas : Sanity check for phyinfo is added

Check for phyinfo->phy before calling sas_port_delete_phy.

Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>

1 files changed, 7 insertions, 1 deletions

diff --git a/drivers/message/fusion/mptsas.c b/drivers/message/fusion/mptsas.c
index 21bd78e4f306..f744f0fc9491 100644
--- a/drivers/message/fusion/mptsas.c
+++ b/drivers/message/fusion/mptsas.c
@@ -852,7 +852,13 @@ mptsas_setup_wide_ports(MPT_ADAPTER *ioc, struct mptsas_portinfo *port_info)
                 port_details->num_phys--;
                 port_details->phy_bitmask &= ~ (1 << phy_info->phy_id);
                 memset(&phy_info->attached, 0, sizeof(struct mptsas_devinfo));
-                sas_port_delete_phy(port_details->port, phy_info->phy);
+                if (phy_info->phy) {
+                        devtprintk(ioc, dev_printk(KERN_DEBUG,
+                                &phy_info->phy->dev, MYIOC_s_FMT
+                                "delete phy %d, phy-obj (0x%p)\n", ioc->name,
+                                phy_info->phy_id, phy_info->phy));
+                        sas_port_delete_phy(port_details->port, phy_info->phy);
+                }
                 phy_info->port_details = NULL;
         }