[SCSI] lpfc 8.1.2: Fixed system panic in lpfc_sli_brdreset during dynamic add of LP11K

Fixed system panic in lpfc_sli_brdreset during dynamic add of LP11K

Signed-off-by: Jamie Wellnitz <Jamie.Wellnitz@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

1 files changed, 16 insertions, 1 deletions

diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c
index b7a603a45328..369487e8f450 100644
--- a/drivers/scsi/lpfc/lpfc_init.c
+++ b/drivers/scsi/lpfc/lpfc_init.c
@@ -1462,9 +1462,23 @@ lpfc_pci_probe_one(struct pci_dev *pdev, const struct pci_device_id *pid)
         phba->pci_bar2_map = pci_resource_start(phba->pcidev, 2);
         bar2map_len        = pci_resource_len(phba->pcidev, 2);
 
-        /* Map HBA SLIM and Control Registers to a kernel virtual address. */
+        /* Map HBA SLIM to a kernel virtual address. */
         phba->slim_memmap_p      = ioremap(phba->pci_bar0_map, bar0map_len);
+        if (!phba->slim_memmap_p) {
+                error = -ENODEV;
+                dev_printk(KERN_ERR, &pdev->dev,
+                           "ioremap failed for SLIM memory.\n");
+                goto out_idr_remove;
+        }
+
+        /* Map HBA Control Registers to a kernel virtual address. */
         phba->ctrl_regs_memmap_p = ioremap(phba->pci_bar2_map, bar2map_len);
+        if (!phba->ctrl_regs_memmap_p) {
+                error = -ENODEV;
+                dev_printk(KERN_ERR, &pdev->dev,
+                           "ioremap failed for HBA control registers.\n");
+                goto out_iounmap_slim;
+        }
 
         /* Allocate memory for SLI-2 structures */
         phba->slim2p = dma_alloc_coherent(&phba->pcidev->dev, SLI2_SLIM_SIZE,
@@ -1643,6 +1657,7 @@ out_free_slim:
                                                         phba->slim2p_mapping);
 out_iounmap:
         iounmap(phba->ctrl_regs_memmap_p);
+out_iounmap_slim:
         iounmap(phba->slim_memmap_p);
 out_idr_remove:
         idr_remove(&lpfc_hba_index, phba->brd_no);