[Intel-gfx] [PATCH igt v2] igt/vgem_basic: Load and unload the module first

[Chris Wilson]

To ensure the module exists, first load it. Then when we try to unload
the module (to check that our modprobe interface works), we will not get
spurious failures due to -ENOENT (in this case meaning the module did
not exist):

(vgem_basic:18361) igt-core-DEBUG: Starting subtest: unload
(vgem_basic:18361) igt-kmod-DEBUG: Could not remove module vgem (No such file or directory)
Test requirement not met in function test_unload, file vgem_basic.c:331:
Test requirement: module_unload() == 0
Last errno: 2, No such file or directory

Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
---
 tests/vgem_basic.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tests/vgem_basic.c b/tests/vgem_basic.c
index 982da73a..1a952c54 100644
--- a/tests/vgem_basic.c
+++ b/tests/vgem_basic.c
@@ -328,6 +328,10 @@ static void test_unload(void)
 	int vgem, dmabuf;
 	uint32_t *ptr;
 
+	/* Load and unload vgem just to make sure it exists */
+	vgem = __drm_open_driver(DRIVER_VGEM);
+	igt_require(vgem != -1);
+	close(vgem);
 	igt_require(module_unload() == 0);
 
 	vgem = __drm_open_driver(DRIVER_VGEM);
-- 
2.14.1