[Intel-gfx] [PATCH] drm/i915/selftests: Skip mixed page exhaustion if only small pages available

[Chris Wilson]

If we only have 4k pages, we can't mix together different combinations
of hugepages to see if the world burns. However, as the loops did
nothing, we never set err to 0 and reported ENODEV aborting the test.
Teach the test to skip instead.

Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
Cc: Matthew Auld <matthew.william.auld at gmail.com>
Cc: Joonas Lahtinen <joonas.lahtinen at linux.intel.com>
---
 drivers/gpu/drm/i915/selftests/huge_pages.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/selftests/huge_pages.c b/drivers/gpu/drm/i915/selftests/huge_pages.c
index 5cc8101bb2b1..a8d3328b8b64 100644
--- a/drivers/gpu/drm/i915/selftests/huge_pages.c
+++ b/drivers/gpu/drm/i915/selftests/huge_pages.c
@@ -1156,8 +1156,11 @@ static int igt_ppgtt_exhaust_huge(void *arg)
 	struct drm_i915_gem_object *obj;
 	unsigned int size_mask;
 	unsigned int page_mask;
-	int n, i;
 	int err = -ENODEV;
+	int n, i;
+
+	if (supported == I915_GTT_PAGE_SIZE_4K)
+		return 0;
 
 	/*
 	 * Sanity check creating objects with a varying mix of page sizes --
-- 
2.15.0