diff --git a/libbt-vendor/src/bt_vendor_qcom.c b/libbt-vendor/src/bt_vendor_qcom.c
index c388d8a..15901bb 100644
--- a/libbt-vendor/src/bt_vendor_qcom.c
+++ b/libbt-vendor/src/bt_vendor_qcom.c
@@ -331,7 +331,7 @@
 {
     char rfkill_type[64], *enable_ldo_path = NULL;
     char type[16], enable_ldo[6];
-    int fd, size, i, ret, fd_ldo;
+    int fd = 0, size, i, ret, fd_ldo;
 
     char disable[PROPERTY_VALUE_MAX];
     char state;
@@ -435,14 +435,17 @@
     ALOGE("Write %c to rfkill\n", on);
 
     /* Write value to control rfkill */
-    if ((size = write(fd, &on, 1)) < 0) {
-        ALOGE("write(%s) failed: %s (%d)",rfkill_state, strerror(errno),errno);
+    if(fd >= 0) {
+        if ((size = write(fd, &on, 1)) < 0) {
+            ALOGE("write(%s) failed: %s (%d)",rfkill_state, strerror(errno),errno);
 #ifdef WIFI_BT_STATUS_SYNC
-        bt_semaphore_release(lock_fd);
-        bt_semaphore_destroy(lock_fd);
+            bt_semaphore_release(lock_fd);
+            bt_semaphore_destroy(lock_fd);
 #endif
-        return -1;
+            return -1;
+        }
     }
+
 #ifdef BT_SOC_TYPE_ROME
     if(on == '0'){
         ALOGE("Stopping HCI filter as part of CTRL:OFF");
@@ -645,9 +648,10 @@
     char* tok;
 #endif
     bool skip_init = true;
+    int  opcode_init = opcode;
     ALOGV("bt-vendor : op for %d", opcode);
 
-    switch(opcode)
+    switch(opcode_init)
     {
         case BT_VND_OP_POWER_CTRL:
             {
@@ -722,7 +726,6 @@
                 is_ant_req = true;
                 //fall through
 #endif
-
 #endif
         case BT_VND_OP_USERIAL_OPEN:
             {
@@ -838,7 +841,7 @@
                                        /* Since the BD address is configured in boot time We should not be here */
                                        ALOGI("Failed to read BD address. Use the one from bluedroid stack/ftm");
                                     }
-                                    if(rome_soc_init(fd,vnd_local_bd_addr)<0) {
+                                    if(rome_soc_init(fd, (char*)vnd_local_bd_addr)<0) {
                                         retval = -1;
                                         userial_clock_operation(fd, USERIAL_OP_CLK_OFF);
                                     } else {
@@ -1076,7 +1079,7 @@
 
     if ((btSocType = get_bt_soc_type()) < 0) {
         ALOGE("%s: Failed to detect BT SOC Type", __FUNCTION__);
-        return -1;
+        return;
     }
 
     if (btSocType == BT_SOC_ROME) {
diff --git a/libbt-vendor/src/hci_uart.c b/libbt-vendor/src/hci_uart.c
index 8c636cf..92afdf0 100644
--- a/libbt-vendor/src/hci_uart.c
+++ b/libbt-vendor/src/hci_uart.c
@@ -49,6 +49,8 @@
 #define VNDUSERIALDBG(param, ...) {}
 #endif
 
+#define RESERVED(p)  if(p) ALOGI( "%s: reserved param", __FUNCTION__);
+
 /******************************************************************************
 **  Global variables
 ******************************************************************************/
@@ -391,7 +393,7 @@
 *******************************************************************************/
 int userial_vendor_ioctl(userial_vendor_ioctl_op_t op, int *p_data)
 {
-    int err;
+    int err = -1;
 
     switch(op)
     {
@@ -442,6 +444,8 @@
 *******************************************************************************/
 int userial_set_port(char *p_conf_name, char *p_conf_value, int param)
 {
+    RESERVED(p_conf_name);
+    RESERVED(param);
     strlcpy(vnd_userial.port_name, p_conf_value, VND_PORT_NAME_MAXLEN);
 
     return 0;
diff --git a/libbt-vendor/src/hw_ar3k.c b/libbt-vendor/src/hw_ar3k.c
index 2f6da66..b1d50ab 100644
--- a/libbt-vendor/src/hw_ar3k.c
+++ b/libbt-vendor/src/hw_ar3k.c
@@ -96,6 +96,8 @@
 }
 #endif
 
+#define RESERVED(p)  if(p) ALOGI( "%s: reserved param", __FUNCTION__);
+
 /*****************************************************************************
 **   Functions
 *****************************************************************************/
@@ -874,6 +876,8 @@
     uint8_t *event;
     uint8_t *loc_ptr = &cmd[7];
 
+    RESERVED(len);
+
     if (!patch_loc)
         return -1;
 
@@ -1387,6 +1391,8 @@
 
     ALOGI("lpm mode: %d  action: %d", pio, action);
 
+    RESERVED(polarity);
+
     switch (pio)
     {
         case UPIO_LPM_MODE:
diff --git a/libbt-vendor/src/hw_rome.c b/libbt-vendor/src/hw_rome.c
index 3df11ba..08291ad 100644
--- a/libbt-vendor/src/hw_rome.c
+++ b/libbt-vendor/src/hw_rome.c
@@ -60,6 +60,8 @@
 }
 #endif
 
+#define RESERVED(p)  if(p) ALOGI( "%s: reserved param", __FUNCTION__);
+
 int read_vs_hci_event(int fd, unsigned char* buf, int size);
 
 /******************************************************************************
@@ -971,7 +973,7 @@
 int rome_tlv_dnld_req(int fd, int tlv_size)
 {
     int  total_segment, remain_size, i, err = -1;
-    unsigned char wait_cc_evt;
+    unsigned char wait_cc_evt = TRUE;
 
     total_segment = tlv_size/MAX_SIZE_PER_TLV_SEGMENT;
     remain_size = (tlv_size < MAX_SIZE_PER_TLV_SEGMENT)?\
@@ -1687,7 +1689,7 @@
     return wipower_flag;
 }
 
-int rome_get_addon_feature_list(fd) {
+int rome_get_addon_feature_list(int fd) {
     int err = 0;
 
     /* Get addon features that are supported by FW */
@@ -1798,6 +1800,7 @@
     int err = -1, size = 0;
     dnld_fd = fd;
     ALOGI(" %s ", __FUNCTION__);
+    RESERVED(bdaddr);
 
     /* If wipower charging is going on in embedded mode then start hand off req */
     if (wipower_flag == WIPOWER_IN_EMBEDDED_MODE && wipower_handoff_ready != NON_WIPOWER_MODE)