diff --git a/hal/audio_hw.c b/hal/audio_hw.c
index fa83205..ef74440 100644
--- a/hal/audio_hw.c
+++ b/hal/audio_hw.c
@@ -2015,6 +2015,10 @@
     struct stream_out stream_out;
     audio_usecase_t hfp_ucid;
     int status = 0;
+    audio_devices_t audio_device;
+    audio_channel_mask_t channel_mask;
+    int sample_rate;
+    int acdb_id;
 
     ALOGD("%s for use case (%s)", __func__, use_case_table[uc_id]);
 
@@ -2255,14 +2259,11 @@
             usecase->stream.out->app_type_cfg.sample_rate = DEFAULT_OUTPUT_SAMPLING_RATE;
         }
 
-        /* Notify device change info to effect clients registered */
-        pthread_mutex_unlock(&adev->lock);
-        audio_extn_gef_notify_device_config(
-                usecase->stream.out->devices,
-                usecase->stream.out->channel_mask,
-                usecase->stream.out->app_type_cfg.sample_rate,
-                platform_get_snd_device_acdb_id(usecase->out_snd_device));
-        pthread_mutex_lock(&adev->lock);
+        /* Cache stream information to be notified to gef clients */
+        audio_device = usecase->stream.out->devices;
+        channel_mask = usecase->stream.out->channel_mask;
+        sample_rate = usecase->stream.out->app_type_cfg.sample_rate;
+        acdb_id = platform_get_snd_device_acdb_id(usecase->out_snd_device);
     }
     enable_audio_route(adev, usecase);
 
@@ -2319,6 +2320,16 @@
          }
     }
 
+    /* Notify device change info to effect clients registered
+     * NOTE: device lock has to be unlock temporarily here.
+     * To the worst case, we notify stale info to clients.
+     */
+    if (usecase->type == PCM_PLAYBACK) {
+        pthread_mutex_unlock(&adev->lock);
+        audio_extn_gef_notify_device_config(audio_device, channel_mask, sample_rate, acdb_id);
+        pthread_mutex_lock(&adev->lock);
+    }
+
     ALOGD("%s: done",__func__);
 
     return status;