DO NOT MERGE Remove Porsche car-kit pairing workaround

Bug: 26551752
Change-Id: I14c5e3fcda0849874c8a94e48aeb7d09585617e1

include/bt_target.h

@@ -251,10 +251,6 @@
 #define BTA_AV_RET_TOUT 15
 #endif
 
-#ifndef PORCHE_PAIRING_CONFLICT
-#define PORCHE_PAIRING_CONFLICT  TRUE
-#endif
-
 #ifndef BTA_AV_CO_CP_SCMS_T
 #define BTA_AV_CO_CP_SCMS_T  FALSE
 #endif

stack/btm/btm_int.h

@@ -888,11 +888,6 @@ typedef struct
     BOOLEAN                  security_mode_changed;  /* mode changed during bonding */
     BOOLEAN                  pin_type_changed;       /* pin type changed during bonding */
     BOOLEAN                  sec_req_pending;       /*   TRUE if a request is pending */
-// btla-specific ++
-#ifdef PORCHE_PAIRING_CONFLICT
-    UINT8                    pin_code_len_saved;     /* for legacy devices */
-#endif
-// btla-specific --
 
     UINT8                    pin_code_len;  /* for legacy devices */
     PIN_CODE                 pin_code;      /* for legacy devices */

stack/btm/btm_sec.c

@@ -1074,13 +1074,6 @@ void BTM_PINCodeReply (BD_ADDR bd_addr, UINT8 res, UINT8 pin_len, UINT8 *p_pin,
     btm_sec_change_pairing_state (BTM_PAIR_STATE_WAIT_AUTH_COMPLETE);
     btm_cb.acl_disc_reason = HCI_SUCCESS;
 
-#ifdef PORCHE_PAIRING_CONFLICT
-    BTM_TRACE_EVENT("BTM_PINCodeReply(): Saving pin_len: %d btm_cb.pin_code_len: %d", pin_len, btm_cb.pin_code_len);
-    /* if this was not pre-fetched, save the PIN */
-    if (btm_cb.pin_code_len == 0)
-        memcpy (btm_cb.pin_code, p_pin, pin_len);
-    btm_cb.pin_code_len_saved = pin_len;
-#endif
     btsnd_hcic_pin_code_req_reply (bd_addr, pin_len, p_pin);
 }
 
@@ -5057,10 +5050,6 @@ void btm_sec_pin_code_request (UINT8 *p_bda)
     tBTM_SEC_DEV_REC *p_dev_rec;
     tBTM_CB          *p_cb = &btm_cb;
 
-#ifdef PORCHE_PAIRING_CONFLICT
-    UINT8 default_pin_code_len = 4;
-    PIN_CODE default_pin_code = {0x30, 0x30, 0x30, 0x30};
-#endif
     BTM_TRACE_EVENT ("btm_sec_pin_code_request()  State: %s, BDA:%04x%08x",
                       btm_pair_state_descr(btm_cb.pairing_state),
                       (p_bda[0]<<8)+p_bda[1], (p_bda[2]<<24)+(p_bda[3]<<16)+(p_bda[4]<<8)+p_bda[5] );
@@ -5070,18 +5059,8 @@ void btm_sec_pin_code_request (UINT8 *p_bda)
         if ( (memcmp (p_bda, btm_cb.pairing_bda, BD_ADDR_LEN) == 0)  &&
              (btm_cb.pairing_state == BTM_PAIR_STATE_WAIT_AUTH_COMPLETE) )
         {
-             /* fake this out - porshe carkit issue - */
-//            btm_cb.pairing_state = BTM_PAIR_STATE_IDLE;
-             if(! btm_cb.pin_code_len_saved)
-             {
-                 btsnd_hcic_pin_code_neg_reply (p_bda);
-                 return;
-             }
-             else
-             {
-                 btsnd_hcic_pin_code_req_reply (p_bda, btm_cb.pin_code_len_saved, p_cb->pin_code);
-      	         return;
-             }
+             btsnd_hcic_pin_code_neg_reply (p_bda);
+             return;
         }
         else if ((btm_cb.pairing_state != BTM_PAIR_STATE_WAIT_PIN_REQ)
                  || memcmp (p_bda, btm_cb.pairing_bda, BD_ADDR_LEN) != 0)
@@ -5089,22 +5068,7 @@ void btm_sec_pin_code_request (UINT8 *p_bda)
             BTM_TRACE_WARNING ("btm_sec_pin_code_request() rejected - state: %s",
                                 btm_pair_state_descr(btm_cb.pairing_state));
 
-#ifdef PORCHE_PAIRING_CONFLICT
-            /* reply pin code again due to counter in_rand when local initiates pairing */
-            BTM_TRACE_EVENT ("btm_sec_pin_code_request from remote dev. for local initiated pairing");
-            if(! btm_cb.pin_code_len_saved)
-            {
-                btm_sec_change_pairing_state (BTM_PAIR_STATE_WAIT_AUTH_COMPLETE);
-                btsnd_hcic_pin_code_req_reply (p_bda, default_pin_code_len, default_pin_code);
-            }
-            else
-            {
-                btm_sec_change_pairing_state (BTM_PAIR_STATE_WAIT_AUTH_COMPLETE);
-                btsnd_hcic_pin_code_req_reply (p_bda, btm_cb.pin_code_len_saved, p_cb->pin_code);
-            }
-#else
             btsnd_hcic_pin_code_neg_reply (p_bda);
-#endif
             return;
         }
     }
@@ -5141,10 +5105,6 @@ void btm_sec_pin_code_request (UINT8 *p_bda)
         BTM_TRACE_EVENT ("btm_sec_pin_code_request bonding sending reply");
         btsnd_hcic_pin_code_req_reply (p_bda, btm_cb.pin_code_len, p_cb->pin_code);
 
-#ifdef PORCHE_PAIRING_CONFLICT
-        btm_cb.pin_code_len_saved = btm_cb.pin_code_len;
-#endif
-
         /* Mark that we forwarded received from the user PIN code */
         btm_cb.pin_code_len = 0;
 
@@ -5175,7 +5135,6 @@ void btm_sec_pin_code_request (UINT8 *p_bda)
     /* Notify upper layer of PIN request and start expiration timer */
     else
     {
-        btm_cb.pin_code_len_saved = 0;
         btm_sec_change_pairing_state (BTM_PAIR_STATE_WAIT_LOCAL_PIN);
         /* Pin code request can not come at the same time as connection request */
         memcpy (p_cb->connecting_bda, p_bda, BD_ADDR_LEN);