[PATCH 05/14] drm: Suppress intentional warning backtraces in scaling unit tests

Guenter Roeck
2024-03-12T17:03:26Z

The drm_test_rect_calc_hscale and drm_test_rect_calc_vscale unit tests
intentionally trigger warning backtraces by providing bad parameters to
the tested functions. What is tested is the return value, not the existence
of a warning backtrace. Suppress the backtraces to avoid clogging the
kernel log.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
---
drivers/gpu/drm/tests/drm_rect_test.c | 6 ++++++
1 file changed, 6 insertions(+)

diff --git a/drivers/gpu/drm/tests/drm_rect_test.c b/drivers/gpu/drm/tests/drm_rect_test.c
index 76332cd2ead8..75614cb4deb5 100644
--- a/drivers/gpu/drm/tests/drm_rect_test.c
+++ b/drivers/gpu/drm/tests/drm_rect_test.c
@@ -406,22 +406,28 @@ KUNIT_ARRAY_PARAM(drm_rect_scale, drm_rect_scale_cases, drm_rect_scale_case_desc

static void drm_test_rect_calc_hscale(struct kunit *test)
{
+ DEFINE_SUPPRESSED_WARNING(drm_calc_scale);
const struct drm_rect_scale_case *params = test->param_value;
int scaling_factor;

+ START_SUPPRESSED_WARNING(drm_calc_scale);
scaling_factor = drm_rect_calc_hscale(&params->src, &params->dst,
params->min_range, params->max_range);
+ END_SUPPRESSED_WARNING(drm_calc_scale);

KUNIT_EXPECT_EQ(test, scaling_factor, params->expected_scaling_factor);
}

static void drm_test_rect_calc_vscale(struct kunit *test)
{
+ DEFINE_SUPPRESSED_WARNING(drm_calc_scale);
const struct drm_rect_scale_case *params = test->param_value;
int scaling_factor;

+ START_SUPPRESSED_WARNING(drm_calc_scale);
scaling_factor = drm_rect_calc_vscale(&params->src, &params->dst,
params->min_range, params->max_range);
+ END_SUPPRESSED_WARNING(drm_calc_scale);

KUNIT_EXPECT_EQ(test, scaling_factor, params->expected_scaling_factor);
}
--
2.39.2