diff --git a/CORE/SERVICES/HIF/PCIe/if_pci.c b/CORE/SERVICES/HIF/PCIe/if_pci.c
index 53fb1c2..374a9b0 100644
--- a/CORE/SERVICES/HIF/PCIe/if_pci.c
+++ b/CORE/SERVICES/HIF/PCIe/if_pci.c
@@ -1601,12 +1601,17 @@
     u_int16_t device_id;
     u_int16_t revision_id;
     u_int32_t lcr_val;
+    static int devid = 0;
 
     printk(KERN_INFO "%s:, con_mode= 0x%x\n", __func__, vos_get_conparam());
 
 again:
     ret = 0;
 
+    /* CLD driver only support one instance */
+    if (devid)
+	return -EIO;
+
 #define BAR_NUM 0
     /*
      * Without any knowledge of the Host, the Target
@@ -1886,6 +1891,7 @@
     pci_write_config_dword(pdev, 0x80, lcr_val);
 
     hif_pci_pm_runtime_init(sc);
+    devid++;
 
     return 0;