drm/tests: Fix incorrect argument in drm_test_mm_insert_range

commit 2ba157983974ae1b6aaef7d4953812020d6f1eb5 upstream.

While drm_mm test was converted form igt selftest to kunit, unexpected
value of "end" argument equal "start" was introduced to one of calls to a
function that executes the drm_test_mm_insert_range for specific start/end
pair of arguments.  As a consequence, DRM_MM_BUG_ON(end <= start) is
triggered.  Fix it by restoring the original value.

Fixes: fc8d29e298cf ("drm: selftest: convert drm_mm selftest to KUnit")
Signed-off-by: Janusz Krzysztofik <janusz.krzysztofik@linux.intel.com>
Cc: "Maíra Canal" <mairacanal@riseup.net>
Cc: Arthur Grillo <arthurgrillo@riseup.net>
Cc: Javier Martinez Canillas <javierm@redhat.com>
Cc: Daniel Latypov <dlatypov@google.com>
Cc: stable@vger.kernel.org # v6.1+
Reviewed-by: Maíra Canal <mairacanal@riseup.net>
Signed-off-by: Maíra Canal <mairacanal@riseup.net>
Link: https://patchwork.freedesktop.org/patch/msgid/20230911130323.7037-2-janusz.krzysztofik@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/gpu/drm/tests/drm_mm_test.c b/drivers/gpu/drm/tests/drm_mm_test.c
index c4b66eeae2039f6ce5f754f0006737bf028385bf..13fa4a18a11b2fa06fa7b49df6b1b4bf1b68ba7c 100644 (file)
--- a/drivers/gpu/drm/tests/drm_mm_test.c
+++ b/drivers/gpu/drm/tests/drm_mm_test.c
@@ -939,7 +939,7 @@ static void drm_test_mm_insert_range(struct kunit *test)
                KUNIT_ASSERT_FALSE(test, __drm_test_mm_insert_range(test, count, size, 0, max - 1));
                KUNIT_ASSERT_FALSE(test, __drm_test_mm_insert_range(test, count, size, 0, max / 2));
                KUNIT_ASSERT_FALSE(test, __drm_test_mm_insert_range(test, count, size,
-                                                                   max / 2, max / 2));
+                                                                   max / 2, max));
                KUNIT_ASSERT_FALSE(test, __drm_test_mm_insert_range(test, count, size,
                                                                    max / 4 + 1, 3 * max / 4 - 1));