diff --git a/drivers/char/adsprpc.c b/drivers/char/adsprpc.c
index 8e7b4eff7325..9268f39cb328 100644
--- a/drivers/char/adsprpc.c
+++ b/drivers/char/adsprpc.c
@@ -4959,6 +4959,7 @@ static int fastrpc_internal_mem_map(struct fastrpc_file *fl,
 	int err = 0;
 	struct fastrpc_mmap *map = NULL;
 
+	mutex_lock(&fl->internal_map_mutex);
 	VERIFY(err, fl->dsp_proc_init == 1);
 	if (err) {
 		pr_err("adsprpc: ERROR: %s: user application %s trying to map without initialization\n",
@@ -4997,6 +4998,7 @@ bail:
 			mutex_unlock(&fl->map_mutex);
 		}
 	}
+	mutex_unlock(&fl->internal_map_mutex);
 	return err;
 }
 
@@ -5006,6 +5008,7 @@ static int fastrpc_internal_mem_unmap(struct fastrpc_file *fl,
 	int err = 0;
 	struct fastrpc_mmap *map = NULL;
 
+	mutex_lock(&fl->internal_map_mutex);
 	VERIFY(err, fl->dsp_proc_init == 1);
 	if (err) {
 		pr_err("adsprpc: ERROR: %s: user application %s trying to map without initialization\n",
@@ -5051,6 +5054,7 @@ bail:
 			mutex_unlock(&fl->map_mutex);
 		}
 	}
+	mutex_unlock(&fl->internal_map_mutex);
 	return err;
 }