fix error return value

Change-Id: Ic59614bb26531f6cb1cdd16f83ec59a589c0e79f

diff --git a/src/tbm_bufmgr.c b/src/tbm_bufmgr.c
index 17f45d6..c26bf69 100644 (file)
--- a/src/tbm_bufmgr.c
+++ b/src/tbm_bufmgr.c
@@ -1069,7 +1069,7 @@ tbm_bo_export_fd(tbm_bo bo)
 
        if (!bufmgr->backend->bo_export_fd) {
                _tbm_bufmgr_mutex_unlock();
-               return 0;
+               return -1;
        }
 
        ret = bufmgr->backend->bo_export_fd(bo);