linux-kernel - [PATCH v4 14/23] drm/tests: hdmi: Add macro to support EDEADLK handling

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20250425-hdmi-conn-yuv-v4-14-5e55e2aaa3fa@collabora.com>
Date: Fri, 25 Apr 2025 13:27:05 +0300
From: Cristian Ciocaltea <cristian.ciocaltea@...labora.com>
To: Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>, 
 Maxime Ripard <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>, 
 David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>, 
 Dave Stevenson <dave.stevenson@...pberrypi.com>, 
 Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>, 
 Dmitry Baryshkov <lumag@...nel.org>, Dmitry Baryshkov <lumag@...nel.org>
Cc: kernel@...labora.com, dri-devel@...ts.freedesktop.org, 
 linux-kernel@...r.kernel.org
Subject: [PATCH v4 14/23] drm/tests: hdmi: Add macro to support EDEADLK
 handling

In preparation to improve error handling throughout all test cases,
introduce a macro to check for EDEADLK and automate the restart of the
atomic sequence.

Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@...labora.com>
---
 drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c b/drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c
index c8969ee6518954ab4496d3a4398f428bf4104a36..c8bb131d63ea6d0c9e166c8d9ba5e403118cd9f1 100644
--- a/drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c
+++ b/drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c
@@ -224,6 +224,16 @@ drm_kunit_helper_connector_hdmi_init(struct kunit *test,
 				test_edid_hdmi_1080p_rgb_max_200mhz);
 }
 
+#define drm_kunit_atomic_restart_on_deadlock(ret, state, ctx, start) do {	\
+	if (ret == -EDEADLK) {							\
+		if (state)							\
+			drm_atomic_state_clear(state);				\
+		ret = drm_modeset_backoff(ctx);					\
+		if (!ret)							\
+			goto start;						\
+	}									\
+} while (0)
+
 /*
  * Test that if we change the RGB quantization property to a different
  * value, we trigger a mode change on the connector's CRTC, which will

-- 
2.49.0