diff --git a/drivers/soc/qcom/smcinvoke.c b/drivers/soc/qcom/smcinvoke.c
index da8a33932180..6397e5a963a1 100644
--- a/drivers/soc/qcom/smcinvoke.c
+++ b/drivers/soc/qcom/smcinvoke.c
@@ -1322,7 +1322,9 @@ static int prepare_send_scm_msg(const uint8_t *in_buf, phys_addr_t in_paddr,
 
 			if (ret == -EBUSY) {
 				pr_err("Secure side is busy,will retry after 30 ms\n");
+				mutex_unlock(&g_smcinvoke_lock);
 				msleep(SMCINVOKE_SCM_EBUSY_WAIT_MS);
+				mutex_lock(&g_smcinvoke_lock);
 			}
 
 		} while ((ret == -EBUSY) &&