correctly propogate bad return code from p9_adu_coherent_status_check

p9_adu_access.C
p9_adu_setup.C
  save current_err to local return code object at start of exit path,
  and return the saved value at exit (prior code was clobbering
  current_err by call to cleanup routines)

Change-Id: I2f247ba2e93c673b3581e3ebe1504d4f05cb3a24
CQ: SW434090
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/60607
Tested-by: HWSV CI <hwsv-ci+hostboot@us.ibm.com>
Tested-by: PPE CI <ppe-ci+hostboot@us.ibm.com>
Tested-by: Hostboot CI <hostboot-ci+hostboot@us.ibm.com>
Reviewed-by: Jennifer A. Stofer <stofer@us.ibm.com>
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/60618
Tested-by: Jenkins Server <pfd-jenkins+hostboot@us.ibm.com>
Reviewed-by: Sachin Gupta <sgupta2m@in.ibm.com>

src/import/chips/p9/procedures/hwp/nest/p9_adu_access.C

@@ -65,6 +65,7 @@ extern "C" {
 
         bool l_busyBitStatus = false;
         adu_status_busy_handler l_busyHandling;
+        fapi2::ReturnCode l_rc = fapi2::FAPI2_RC_SUCCESS;
 
         // mark HWP entry
         FAPI_DBG("Entering ...\n");
@@ -147,8 +148,11 @@ extern "C" {
 
     fapi_try_exit:
 
+        l_rc = fapi2::current_err;
+        FAPI_DBG("Error to return : %08X", (uint64_t) l_rc);
+
         //If there is an error and we want to cleanup the ADU
-        if ( fapi2::current_err && l_myAduFlag.getOperFailCleanup() )
+        if ( l_rc && l_myAduFlag.getOperFailCleanup() )
         {
             //reset the ADU
             (void) p9_adu_coherent_utils_reset_adu(i_target);
@@ -160,16 +164,16 @@ extern "C" {
         //Append the input data to an error if we got an error back
 #ifndef __PPE__
 
-        if (fapi2::current_err)
+        if (l_rc)
         {
-            p9_adu_coherent_append_input_data(i_address, i_rnw, i_flags, fapi2::current_err);
+            p9_adu_coherent_append_input_data(i_address, i_rnw, i_flags, l_rc);
         }
 
 #endif
 
-        FAPI_DBG("Exiting...");
+        FAPI_DBG("Exiting with return code : %08X...", (uint64_t) l_rc);
         //Return the error that we got from up above
-        return fapi2::current_err;
+        return l_rc;
     }
 
 } // extern "C"

src/import/chips/p9/procedures/hwp/nest/p9_adu_setup.C

@@ -55,6 +55,7 @@ extern "C"
                                    uint32_t& o_numGranules)
     {
         //return code
+        fapi2::ReturnCode l_rc = fapi2::FAPI2_RC_SUCCESS;
         uint32_t num_attempts = 1;
         bool lock_pick = false;
 
@@ -129,9 +130,12 @@ extern "C"
 
     fapi_try_exit:
 
+        l_rc = fapi2::current_err;
+        FAPI_DBG("Error to return : %08X", (uint64_t) l_rc);
+
         //if an error has occurred, ADU is dirty, and instructed to clean up,
         //attempt to reset ADU and free lock (propogate rc of original fail)
-        if (fapi2::current_err && adu_is_dirty && !adu_leave_dirty)
+        if (l_rc && adu_is_dirty && !adu_leave_dirty)
         {
             (void) p9_adu_coherent_utils_reset_adu(i_target);
             (void) p9_adu_coherent_manage_lock(i_target, false, false, num_attempts);
@@ -140,15 +144,15 @@ extern "C"
         //Append the input data to an error if we got an error back
 #ifndef __PPE__
 
-        if (fapi2::current_err)
+        if (l_rc)
         {
             p9_adu_coherent_append_input_data(i_address, i_rnw, i_flags, fapi2::current_err);
         }
 
 #endif
 
-        FAPI_DBG("Exiting...");
-        return fapi2::current_err;
+        FAPI_DBG("Exiting with return code : %08X...", (uint64_t) l_rc);
+        return l_rc;
     }
 
 } // extern "C"